WO2021063364A1 - High-efficiency double-frame double-cutting line feed-through intermediate thickness slab production line and production method - Google Patents

High-efficiency double-frame double-cutting line feed-through intermediate thickness slab production line and production method Download PDF

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Publication number
WO2021063364A1
WO2021063364A1 PCT/CN2020/118929 CN2020118929W WO2021063364A1 WO 2021063364 A1 WO2021063364 A1 WO 2021063364A1 CN 2020118929 W CN2020118929 W CN 2020118929W WO 2021063364 A1 WO2021063364 A1 WO 2021063364A1
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Prior art keywords
steel plate
line
double
plate
rolling
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PCT/CN2020/118929
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French (fr)
Chinese (zh)
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李伟
刘斌
陈国锋
姚征男
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宝钢湛江钢铁有限公司
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Priority to JP2022518824A priority Critical patent/JP7308358B2/en
Priority to KR1020227014540A priority patent/KR20220102135A/en
Priority to US17/763,945 priority patent/US20220339684A1/en
Publication of WO2021063364A1 publication Critical patent/WO2021063364A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/222—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a rolling-drawing process; in a multi-pass mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B2001/225—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by hot-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B21B2015/0021—Cutting or shearing the product in the rolling direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0071—Levelling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically

Definitions

  • the invention relates to thick plate rolling technology, in particular to a high-efficiency double-stand double-cutting line through a medium-thick plate production line and a production method.
  • Plate is an important steel material on which the development of the national economy depends. It is used in shipbuilding, building structures, bridge construction, military industry, and large-diameter welded pipes. At present, my country has a total of 76 medium and heavy plate production lines (of which, 68 production lines can be effectively produced), with a designed production capacity of 93.74 million tons/year. my country's plate production capacity segment is extremely unbalanced. East China, North China, and Central South have large plate production capacity, and some of the plate products produced need to be exported to other regions. The production capacity of plate in the Northeast can basically meet the needs of the mid-to-high-end market in the region, and the demand in the low-end market needs to be filled by production capacity outside the region.
  • the production capacity of the rolling line and the finishing line are not matched. Generally, the production capacity of the rolling mill is greater than the production capacity of the finishing line in the rear area, which causes the rolling mill production capacity to not be fully utilized;
  • the rolling length is limited. Generally, the maximum rolling length does not exceed 52m, which results in low rolling unit weight and low rolling mill output;
  • Chinese patent CN201410302065 discloses a method for controlling the rolling and conveying speed of steel plates in a medium and heavy plate rolling production line.
  • the sequence of the medium and heavy plate rolling production line includes: the last pass of the finishing mill, and 1 ⁇ N after the rolling mill.
  • Conveying roller table, pre-straightening machine, control cooling device and hot straightening machine, the control method of the steel plate rolling and conveying speed is an overall coordinated speed automatic control method, including the final rolling process of the finishing mill, The overall coordinated speed control of the roller conveying process and the pre-straightening process.
  • Chinese patent CN201410302063 discloses a method for controlling the temperature drop of a steel plate during a medium and heavy plate rolling production line, and relates to a rolling process including the last pass of the rolling mill, and the steel plate is transported from the finishing mill to the roller table of the control cooling device Automated speed control method of transportation process.
  • the purpose of the present invention is to provide a high-efficiency double-stand double-shearing line through medium and heavy plate production line and production method, which can greatly improve the efficiency of rolling, finishing and warehousing of the medium and heavy plate production line.
  • a high-efficiency double-stand double-cutting line straight through medium and heavy plate production line which is characterized in that it includes: a main rolling line, at least two parallel cutting lines, which are respectively arranged in parallel outside each of the cutting lines The straightening and stacking line; one of the shearing lines is directly arranged with the main rolling line; wherein,
  • the main rolling line includes: heating furnace, high pressure water descaling, fixed width press, vertical roll, four-high roughing mill, intermediate cooling device, four-high finishing mill, ACC accelerated cooling device, heat Straightening machine, 1# marking device, hot segmented shears, 1# cooling bed, 1# inspection bench and 2# cooling bed, 2# inspection bench respectively arranged on both sides of the steel rolling conveyor roller table;
  • each of the shearing lines includes a shearing conveying roller table, and ultrasonic flaw detection is sequentially arranged along the shearing conveying roller table , Head-cutting shears, bilateral shears, 2# marking device, fixed-length shears, 3# marking device, pre-stacker; a plate turning machine is set between the cutting lines;
  • the straightening and stacking line includes a straightening and conveying roller table.
  • a cold straightening machine, 4# marking device and a finished product collection platform arranged on both sides of the straightening and conveying roller table are arranged in sequence along the straightening and conveying roller table. ;
  • a traverse platform is arranged between the shearing line and the straightening and stacking line.
  • the #1 cooling bed is arranged on one side of the steel rolling conveying roller table before the hot section shearing.
  • the heating furnace is provided with at least three, and a deburring machine and a weighing machine are sequentially arranged along the roller table of the heating furnace.
  • the heating furnace roller table is directly connected to the continuous casting roller table.
  • a slab library is provided on one side of the heating furnace, and an operating room is provided for the slab library and the heating furnace; and an operating room is provided for the four-high roughing mill to the ACC accelerated cooling device in the main rolling line .
  • the two cutting lines are respectively arranged in two workshop spans.
  • the inspection platform, the ultrasonic flaw detection, the cutting head shears are provided with an operating room; corresponding to the double-sided shears is provided with an operating room; corresponding to the fixed-length shears, the inspection point, and the pre-stacker Set up an operating room.
  • the #1 cooling bed and the #1 inspection bench extend to the third plant span.
  • the present invention also provides an efficient double-frame double-cutting line through the medium-thick plate production line to produce a medium-thick plate method, which is characterized in that the method adopts the above-mentioned efficient double-frame double-cutting line through In a plate production line, the method includes the following steps:
  • the tapping After the continuous casting slab is heated to the target temperature, the tapping enters the main rolling line's steel conveying roller table, and first passes through the high-pressure water dephosphorization equipment for surface treatment to remove the oxide scale on the surface of the continuous casting slab;
  • the continuous casting slab after dephosphorization by high-pressure water reaches the fixed width press for online width adjustment to reach the required width before the vertical roll mill; then the continuous casting slab reaches the vertical roller, and the continuous casting slab is transferred by the vertical roller to the continuous casting slab.
  • the plane shape, head shape, tail shape, and edge shape are adjusted to facilitate the subsequent acquisition of good steel plate width dimensional accuracy;
  • the slab is rolled to the required steel plate width and thickness according to the set number of passes, steel biting speed, and reduction parameters, and a good plate shape is obtained Different from the same plate, and realize the final rolling temperature of the steel plate with different temperature control requirements at the same time;
  • the steel plate After the steel plate is finished rolling, it will pass the ACC accelerated cooling device according to whether there is a controlled cooling requirement. If there is a cooling requirement, it will be cooled online according to the cooling speed, flow rate, passing speed and other parameters set by the model to achieve the target final cooling Temperature, so as to improve the mechanical properties of the steel plate; for steel plates without controlled cooling requirements, directly pass the ACC accelerated cooling device;
  • the steel plate After the steel plate passes through the cooling device, it passes through a hot straightening machine with one pass of straightening process to improve the shape of the steel plate; if the rolled plate shape is poor, the straightening pass can also be increased;
  • the steel plate is marked in the middle process at the 1# marking device to facilitate the traceability of the middle process of the steel plate;
  • the marked steel plate is rolled into sections at the hot section shear to meet the maximum length requirements of the upper cooling bed; after sectioning, the steel plate can be cooled by different cooling beds according to the logistics situation; for the steel plate that needs to pass through It is also possible to directly enter the shearing roller table of the shearing line from the conveying roller table without using the cooling bed;
  • the bilateral shears After cutting the head and tail of the steel plate, it enters the bilateral shears, which is used to cut the burrs on both sides of the steel plate.
  • the mobile shear of the bilateral shears presets the position according to the width of the finished product to be cut;
  • the steel plate is sprayed with the sample in the marking device. If the steel plate has no sample, the marking device will be blanked;
  • the steel plate After the steel plate passes through the marking device, it enters the cut-to-length shear, and the cut-to-length shear cuts the steel plate to the length required by the final contract; at the same time, sample the steel plate that needs to be sampled, and send the large sample to the sample shear for the next step Processing and performance testing;
  • the steel plate printing After the steel plate printing is finished, enter the final inspection point of the product for inspection. If the steel plate has no problem after the inspection, the steel plate will pass through the pre-stacker and be stacked in the warehouse through the roller conveyor; if the plate shape of the steel plate is defective, enter the product through the traverse platform.
  • the cold straightening machine performs plate shape correction, and after the correction is completed, the marking device is marked; after the marking is completed, it enters the finished product warehouse through the conveyor roller, and enters the finished product warehouse stacking position through the finished product collection platform according to the stacking requirements, and waits for delivery.
  • the water spray cooling is performed through the intermediate cooling device after the rough rolling, which can be different according to the flow rate and speed parameters calculated by the cooling model.
  • the required slab temperature control function; some slabs without temperature control requirements are directly passed through the intermediate cooling device.
  • the production scale can reach 3 million tons/year, high-efficiency production, and lower production costs;
  • the invention adopts ultra-long rolling, and the yield rate can reach ⁇ 94%;
  • the slab is directly connected to the heating furnace area, and the hot charging rate can reach more than 60%;
  • the process layout of the present invention is convenient for maintenance, and the spare parts of each unit can easily enter and exit the workshop;
  • the production line of the present invention only occupies 3 workshop spans, has a small floor area and high production efficiency.
  • FIG. 1 is a schematic diagram 1 of the process layout of Embodiment 1 of the present invention.
  • FIG. 2 is a schematic diagram 2 of the process layout of Embodiment 1 of the present invention.
  • FIG. 3 is a schematic diagram 1 of the process layout of Embodiment 2 of the present invention.
  • FIG. 4 is a schematic diagram 2 of the process layout of Embodiment 2 of the present invention.
  • the high-efficiency double-stand double-cutting line of the present invention passes through the plate production line, which includes: a main rolling line L, two parallel cutting lines C1, C2, respectively Straightening stacking lines S1, S2 arranged in parallel on the outside of each of the shearing lines C1 and C2; one of the shearing lines C1 and the main rolling line L are directly arranged; wherein,
  • the main rolling line L includes: a heating furnace 1, high-pressure water descaling 2, a fixed width press 3, a vertical roll 4, a four-high roughing mill 5, an intermediate cooling device 6, and a four-high finishing mill are arranged in sequence along the steel conveying roller table. 7. ACC accelerated cooling device 8, hot straightening machine 9, 1# marking device 10, hot segment shear 11, 1# cooling bed 12, 1# inspection bench 13 and 2 respectively arranged on both sides of the steel rolling conveyor roller table # ⁇ 14 ⁇ 2# Inspection bench 15;
  • Each cutting line C1 (take the cutting line C1 as an example, the same below) includes the cutting conveyor roller, and the ultrasonic flaw detection 16, the cutting shear 17, the bilateral shear 18, and the 2# marking device are arranged in sequence along the shearing conveyor roller. 19. Cut-to-length shear 20, 3# marking device 21, pre-stacker 22; a plate turning machine 23 is set between the cutting lines C1 and C2;
  • the straightening stacking line S1 (the straightening stacking line S1 is an example, the same below) includes a straightening conveying roller table, a cold straightening machine 24, 4# marking device 25 and a set at The finished product collection stands 26 and 26' on both sides of the straightening conveyor roller;
  • a traverse platform 27 is provided between the cutting line C1 and the straightening and stacking line S1.
  • the heating furnace 1 is provided with at least three, and a deburring machine 28 and a weighing machine 29 are sequentially arranged along the heating furnace roller table; preferably, the heating furnace roller table is directly connected to the continuous casting roller table.
  • the 1# cooling bed 12 of the present invention is set on one side of the rolling conveying roller table before the hot segment shear 11, that is, 1# cooling bed 12 and 1# inspection bench 13 are separated by a distance Layout, part of the steel plates that need stack cooling can be directly placed in the space between 1# inspection bench and 1# cooling bed, and you can use 1# cooling bed and 1# inspection bench equipment to form a natural insulation stack cooling zone, which is more effective It is beneficial to improve the stack cooling effect of the steel plate; in addition, this arrangement also helps to ease the logistics at the junction of the cold bed rolling steel and the finishing line, and has a larger steel plate buffer area, which is conducive to the development of production capacity.
  • a slab storage is provided on one side of the heating furnace, and an operating room is provided for the slab storage and the heating furnace; and an operating chamber is provided for the four-high roughing mill to the ACC accelerated cooling device in the main rolling line.
  • the method for producing medium-thick plates with high-efficiency double-frame double-cutting lines directly connected to a medium-thick plate production line of the present invention includes the following steps:
  • the tapping After the continuous casting slab is heated to the target temperature, the tapping enters the main rolling line's steel conveying roller table, and first passes through the high-pressure water dephosphorization equipment 2 for surface treatment to remove the oxide scale on the surface of the continuous casting slab;
  • the continuous casting slab from the vertical rolling mill is transferred to the four-high roughing mill 5 to roll the intermediate slab, and the continuous casting slab is rolled to the set thickness and width, and the finished product can be rolled in a single stand in case of emergency;
  • the steel plate is not subject to widening rolling;
  • the slab After the rough-rolled slab reaches the four-high finishing mill 7, according to the set number of passes, biting speed, and reduction parameters, the slab is rolled to the required width and thickness of the steel plate, and a good plate is obtained
  • the shape and difference of the same plate can realize the final rolling temperature of the steel plate with different temperature control requirements at the same time;
  • the steel plate After the steel plate is finished rolling, it will pass through the ACC accelerated cooling device 8 according to whether there is a controlled cooling requirement. If there is a cooling requirement, it will be cooled on-line according to the cooling speed, flow rate, passing speed and other parameters set by the model to achieve the target end Cooling temperature, thereby improving the mechanical properties of the steel plate; for steel plates without controlled cooling requirements, directly pass the ACC accelerated cooling device 8;
  • the steel plate is marked in the middle process at 1# marking device 10 to facilitate the traceability of the middle process of the steel plate;
  • the marked steel plate is rolled at the hot segment shear 11 to be segmented to meet the maximum length of the upper cooling bed; after segmentation, the steel plate can be cooled by different cooling beds 12 and 14 according to the logistics situation;
  • the straight steel plate can also enter the shearing roller table of the shearing line directly from the conveying roller table without going to the cooling bed;
  • the mobile shear of the bilateral shear 18 is preset according to the width of the finished product to be cut;
  • the steel plate is set in the marking device 19 for sample printing. If the steel plate has no sample, the marking device is blanked;
  • the cut-to-length shear 20 cuts the steel plate to the length required by the final contract; at the same time, sample the steel plate that needs to be sampled, and send the large sample to the sample cutter. Next processing and performance test;
  • the steel plate printing After the steel plate printing is finished, enter the final inspection point of the product for inspection. If the steel plate has no problems after inspection, the steel plate will pass through the pre-stacker 22 and be stacked in the warehouse through the roller conveyor; if the plate shape of the steel plate is defective, go through the traverse table 27 Enter the cold straightening machine 24 for plate shape correction, and mark at the marking device 25 after the correction; after the marking is completed, it enters the finished product warehouse through the conveyor roller, and enters the finished product warehouse stacking position through the finished product collection platform 26 according to the stacking requirements. Stacked, waiting to leave the factory.
  • the intercooling device 6 is used for water spray cooling, and the slabs with different requirements can be realized according to the flow rate and speed parameters calculated by the cooling model. Temperature control function; some slabs without temperature control requirements are directly passed through the intermediate cooling device 6.
  • a Q345qD slab with a thickness of 250mm, a width of 2200mm, and a length of 8000mm, weighing 34.54t, is sent from the continuous casting roller table to the thick plate heating furnace roller table, and is put into 1# heating furnace 1 for heating after being processed by the deburring machine ,
  • the steel plate loading temperature is 600°C
  • the target heating temperature is 1080°C
  • the actual steel plate temperature is 1085°C;
  • Rough rolling mill rolling the temperature of the steel plate is measured at 1030 degrees at the entrance of the rough rolling, the steel plate is rolled from 250mm to 76mm in thickness after 9 passes, the rolling speed is 2m/s, the maximum rolling force is 6,300 tons, and the maximum torque is 3,000 kN. Meter;
  • Intermediate cooling reduces the temperature of the steel plate to 880 degrees and transfers it to finishing mill 7 for rolling;
  • Finishing rolling mill rolling The steel plate is rolled at the entrance of the finishing mill 7 at a temperature of 880 degrees, and rolled 9 passes, of which 8 passes are loaded, the last pass is empty, and the rolling speed of the first 6 passes is 7m/s.
  • the rolling speed of the final pass is 4m/s, the maximum reduction is 20mm, the reduction rate of the final load pass is 10%, and the final rolling temperature of the steel plate is 780 degrees; the rolling size of the steel plate: 20*2150*102300mm, handed over after the completion of rolling ACC cooling;
  • Hot straightening process one straightening pass, straightening force 300 tons, roll gap 19.5mm, straightening speed 2.5m/s;
  • the steel plate is segmented in the hot segment shear 11, and after segmentation, two steel plates are formed with a length of 48m and 47.6m respectively.
  • the two steel plates enter 1# cooling bed 12 and 2# cooling bed 14 respectively;
  • the steel plate After the flaw detection, the steel plate reaches the position of 1# and 2# cutting shears, cut off the head and tail fillet of the steel plate, and perform rough cutting. After rough cutting, 4 steel plates are produced, each with a length of 23500mm (steel plate 1). Length 23500mm (steel plate 2), length 23000mm (steel plate 3), length 29000mm (steel plate 4);
  • the steel plate After sectioning, the steel plate enters 1# double-side shear and 2# double-side shear for edge cutting.
  • the cutting blade gap is set to 2.0mm, with a maximum cutting frequency of 30 times per minute and a cutting step length of 1,300mm/1050mm
  • the trimming amount of the two sides of the sheared steel plate is slightly different according to the bending of the steel plate.
  • the width of the 4 steel plates after shearing is 2051mm, 2049mm, 2050mm, 2050mm, and the subsequent steel plates are passed through the sample printing machine;
  • the steel plate is marked with the sample number on the 3# marking device 21, and the remaining steel plates pass through the sample printing machine;
  • the steel plates are cut into finished lengths of 14500mm, 9000mm, 12500mm, 11000mm, 12000mm, 11000mm, 12000mm, 16880mm respectively. Take 1 large sample with a length of 120mm. Send the sample to the processing operation room for small sample processing and perform performance testing;
  • the final product is sprayed and printed on the 6# and 7# marking devices, and then the 4# and 6# finished product collection racks enter the finished product warehouse for stacking.

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  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

A high-efficiency double-stand double-cutting line feed-through intermediate thickness slab production line and production method. The intermediate thickness slab production line comprises: a main rolling line, at least two parallel cutting lines, and levelling and stacking lines parallel to the outer sides of the cutting lines. One of the cutting lines is inline to the main rolling line; the main rolling line comprises: a heating furnace, a high pressure water descaler, a slab sizing press, a vertical roll, a four-high roughing mill, an intermediate cooling device, a four-high finishing mill, an accelerated cooling device, a hot leveller, a first marking device, and a hot segment shearer that are disposed in sequence along a steel rolling conveyor roller table, and a first cooling bed and a first inspection bench as well as a second cooling bed and a second inspection bench that are respectively located on both sides of the steel rolling conveyor roller table; a slab turning machine is provided between the cutting lines; and a horizontal moving bench is provided between each cutting line and the levelling and stacking line. The present invention can greatly improve the efficiency of rolling, finishing, and warehousing of the intermediate thickness slab production line.

Description

一种高效的双机架双剪切线直通中厚板生产线及生产方法High-efficiency double-frame double-cutting line straight through medium-thick plate production line and production method 技术领域Technical field
本发明涉及厚板轧制技术，特别涉及一种高效的双机架双剪切线直通中厚板生产线及生产方法。The invention relates to thick plate rolling technology, in particular to a high-efficiency double-stand double-cutting line through a medium-thick plate production line and a production method.
背景技术Background technique
中厚板是国民经济发展所依赖的重要钢铁材料，用于造船、建筑结构、桥梁建设、军事工业以及大口径焊管等。目前我国拥有中厚板产线共计76条(其中，能够有效生产的产线68条)，设计产能为9374万吨/年。我国中厚板生产能力分部极其不平衡。华东、华北和中南地区，中厚板生产能力较大，生产出来的中厚板产品需要部分外销其它区域。东北地区的中厚板生产能力基本可以满足本地区的中高端市场的需求，低端市场需求需要由区域外的生产能力来填补。西北地区中厚板市场需求较小，其生产能力也较小。华南、西南地区中厚板生产能力较小，市场需求主要依靠外来钢板来满足。华南、西南区域中厚板生产能力明显不足。Plate is an important steel material on which the development of the national economy depends. It is used in shipbuilding, building structures, bridge construction, military industry, and large-diameter welded pipes. At present, my country has a total of 76 medium and heavy plate production lines (of which, 68 production lines can be effectively produced), with a designed production capacity of 93.74 million tons/year. my country's plate production capacity segment is extremely unbalanced. East China, North China, and Central South have large plate production capacity, and some of the plate products produced need to be exported to other regions. The production capacity of plate in the Northeast can basically meet the needs of the mid-to-high-end market in the region, and the demand in the low-end market needs to be filled by production capacity outside the region. The market demand for plate in Northwestern China is relatively small, and its production capacity is also relatively small. The production capacity of medium and heavy plates in South China and Southwest China is relatively small, and the market demand is mainly met by imported steel plates. The production capacity of plate in South China and Southwest is obviously insufficient.
因此在部分区域对于扩大厚板产能的需求仍然非常强烈，由于国内厚板产线众多，如果新建产线还采用以前的工艺布局设计，在生产规模、成本、能耗指标面很难有所突破，形成不了市场竞争力，必将无法很好的生存下去。Therefore, the demand for expanding the production capacity of thick plate is still very strong in some areas. Due to the large number of domestic thick plate production lines, if the new production line still adopts the previous process layout design, it is difficult to make breakthroughs in production scale, cost, and energy consumption indicators. , Can not form the market competitiveness, will certainly not be able to survive well.
目前尚无产能超过240万吨/年的厚板产线。目前现有的厚板产线一般工艺布置主要有以下不足：Currently, there is no heavy plate production line with a production capacity of more than 2.4 million tons per year. The current general process layout of the existing thick plate production line mainly has the following shortcomings:
1)单条产线轧线和精整线产能规模不足，一般不超过200万吨；1) The production capacity of the rolling line and finishing line of a single production line is insufficient, generally not exceeding 2 million tons;
2)国内厚板产线布工艺置基本为相似，无太多的创新与变化；2) The layout technology of domestic thick plate production line is basically similar, without too many innovations and changes;
3)由于设计原因板坯库路径太长，热装率不高，基本在50％以下；3) Due to design reasons, the path of the slab warehouse is too long, and the hot charging rate is not high, which is basically below 50%;
4)轧线与精整线产能不匹配，一般是轧机产能大于后区精整线产能，导致轧机产能不能充分发挥；4) The production capacity of the rolling line and the finishing line are not matched. Generally, the production capacity of the rolling mill is greater than the production capacity of the finishing line in the rear area, which causes the rolling mill production capacity to not be fully utilized;
5)轧制长度有限制，一般最大轧制长度不超过52m，导致轧制单重低，轧机产量不高；5) The rolling length is limited. Generally, the maximum rolling length does not exceed 52m, which results in low rolling unit weight and low rolling mill output;
6)轧厚板钢板必须经过冷床绕一圈才能进入剪切线，无法做到轧后钢板直通。6) The rolled thick steel plate must pass through a cooling bed before entering the shear line, and the steel plate cannot be directly connected after rolling.
中国专利CN201410302065公开了一种用于中厚板轧制生产线的钢板轧制及 输送速度的控制方法，所述中厚板轧制生产线顺序包括：精轧机的最后道次轧机，轧机后1～N组输送辊道，预矫直机，控制冷却装置及热矫直机，所述钢板轧制及输送速度的控制方法为一整体协调的速度自动控制方法，包括精轧机最后道次轧制过程、辊道输运过程及预矫直过程的整体协调的速度控制。Chinese patent CN201410302065 discloses a method for controlling the rolling and conveying speed of steel plates in a medium and heavy plate rolling production line. The sequence of the medium and heavy plate rolling production line includes: the last pass of the finishing mill, and 1～N after the rolling mill. Conveying roller table, pre-straightening machine, control cooling device and hot straightening machine, the control method of the steel plate rolling and conveying speed is an overall coordinated speed automatic control method, including the final rolling process of the finishing mill, The overall coordinated speed control of the roller conveying process and the pre-straightening process.
中国专利CN201410302063公开了一种钢板在中厚板轧制生产线过程中的温度下降的控制方法，涉及一种包括轧机最后道次的轧制过程、钢板从精轧机输运到控制冷却装置的辊道输运过程的自动化的速度控制方法。Chinese patent CN201410302063 discloses a method for controlling the temperature drop of a steel plate during a medium and heavy plate rolling production line, and relates to a rolling process including the last pass of the rolling mill, and the steel plate is transported from the finishing mill to the roller table of the control cooling device Automated speed control method of transportation process.
发明内容Summary of the invention
本发明的目的在于提供一种高效的双机架双剪切线直通中厚板生产线及生产方法，可以大幅度提高中厚板产线轧制、精整、入库的效率。The purpose of the present invention is to provide a high-efficiency double-stand double-shearing line through medium and heavy plate production line and production method, which can greatly improve the efficiency of rolling, finishing and warehousing of the medium and heavy plate production line.
为实现上述目的，本发明的技术方案为：In order to achieve the above objective, the technical solution of the present invention is:
一种高效的双机架双剪切线直通中厚板生产线，其特点在于，包括：一主轧线，至少两条平行设置的剪切线，分别平行设置于所述每条剪切线外侧的矫直堆垛线；所述剪切线中的一条剪切线与所述主轧线直通布置；其中，A high-efficiency double-stand double-cutting line straight through medium and heavy plate production line, which is characterized in that it includes: a main rolling line, at least two parallel cutting lines, which are respectively arranged in parallel outside each of the cutting lines The straightening and stacking line; one of the shearing lines is directly arranged with the main rolling line; wherein,
所述主轧线包括：沿轧钢输送辊道依次设置加热炉、高压水除鳞、定宽压力机、立辊、四辊粗轧机、中间冷却装置、四辊精轧机、ACC加速冷却装置、热矫直机、1#标记装置、热分段剪、分别设置于轧钢输送辊道两侧的1#冷床、1#检查台架及2#冷床、2#检查台架；The main rolling line includes: heating furnace, high pressure water descaling, fixed width press, vertical roll, four-high roughing mill, intermediate cooling device, four-high finishing mill, ACC accelerated cooling device, heat Straightening machine, 1# marking device, hot segmented shears, 1# cooling bed, 1# inspection bench and 2# cooling bed, 2# inspection bench respectively arranged on both sides of the steel rolling conveyor roller table;
所述剪切线中的一条剪切线与所述主轧线轧钢输送辊道直通布置；每条所述剪切线包括剪切输送辊道，沿所述剪切输送辊道依次设置超声波探伤、切头剪、双边剪、2#标记装置、定尺剪、3#标记装置、预堆垛机；所述剪切线之间设置一翻板机；One of the shearing lines is directly arranged with the main rolling line's steel rolling conveying roller table; each of the shearing lines includes a shearing conveying roller table, and ultrasonic flaw detection is sequentially arranged along the shearing conveying roller table , Head-cutting shears, bilateral shears, 2# marking device, fixed-length shears, 3# marking device, pre-stacker; a plate turning machine is set between the cutting lines;
所述矫直堆垛线包括矫直输送辊道，沿所述矫直输送辊道依次设置冷矫直机、4#标记装置及设置于所述矫直输送辊道两侧的成品收集台架；The straightening and stacking line includes a straightening and conveying roller table. A cold straightening machine, 4# marking device and a finished product collection platform arranged on both sides of the straightening and conveying roller table are arranged in sequence along the straightening and conveying roller table. ；
所述剪切线与所述矫直堆垛线之间设置横移台架。A traverse platform is arranged between the shearing line and the straightening and stacking line.
根据本发明的一个实施例，所述1#冷床设置于所述热分段剪前的轧钢输送辊道的一侧。According to an embodiment of the present invention, the #1 cooling bed is arranged on one side of the steel rolling conveying roller table before the hot section shearing.
根据本发明的一个实施例，所述加热炉设有至少三座，沿加热炉辊道依次设 有去毛刺机、称重机。According to an embodiment of the present invention, the heating furnace is provided with at least three, and a deburring machine and a weighing machine are sequentially arranged along the roller table of the heating furnace.
根据本发明的一个实施例，所述加热炉辊道与连铸辊道直通。According to an embodiment of the present invention, the heating furnace roller table is directly connected to the continuous casting roller table.
根据本发明的一个实施例，所述加热炉一侧设板坯库，该板坯库和加热炉设一个操作室；所述主轧线中四辊粗轧机至ACC加速冷却装置设一个操作室。According to an embodiment of the present invention, a slab library is provided on one side of the heating furnace, and an operating room is provided for the slab library and the heating furnace; and an operating room is provided for the four-high roughing mill to the ACC accelerated cooling device in the main rolling line .
根据本发明的一个实施例，两条所述剪切线分别布置于两个厂房跨内。According to an embodiment of the present invention, the two cutting lines are respectively arranged in two workshop spans.
根据本发明的一个实施例，平行布置的两条剪切线之间设若干可同时控制两条所述剪切线相应设备的操作室；其中，对应所述热矫直机、所述冷床、所述检查台架、所述超声波探伤、所述切头剪设一个操作室；对应所述双边剪设一个操作室；对应所述定尺剪、所述检查点、所述预堆垛机设一个操作室。According to an embodiment of the present invention, there are several operation rooms between the two cutting lines arranged in parallel, which can simultaneously control the corresponding equipment of the two cutting lines; wherein, corresponding to the hot straightening machine and the cooling bed , The inspection platform, the ultrasonic flaw detection, the cutting head shears are provided with an operating room; corresponding to the double-sided shears is provided with an operating room; corresponding to the fixed-length shears, the inspection point, and the pre-stacker Set up an operating room.
根据本发明的一个实施例，所述1#冷床、所述1#检查台架延伸至第三厂房跨。According to an embodiment of the present invention, the #1 cooling bed and the #1 inspection bench extend to the third plant span.
本发明还提供了一种高效的双机架双剪切线直通中厚板生产线生产中厚板的方法，其特点在于，所述方法采用如上所述的高效的双机架双剪切线直通中厚板生产线，所述方法包括如下步骤：The present invention also provides an efficient double-frame double-cutting line through the medium-thick plate production line to produce a medium-thick plate method, which is characterized in that the method adopts the above-mentioned efficient double-frame double-cutting line through In a plate production line, the method includes the following steps:
1)连铸板坯通过连铸辊道直接在线以最高的温度送至加热炉前加热炉辊道，进行去毛刺、称重；1) The continuous casting slab is directly sent online through the continuous casting roller table to the heating furnace roller table in front of the heating furnace at the highest temperature for deburring and weighing;
2)连铸板坯称重后根据装炉计划装入一个加热炉进行加热；2) After the continuous casting slab is weighed, it is loaded into a heating furnace for heating according to the furnace loading plan;
3)连铸板坯加热至目标温度后，出钢进入主轧线轧钢输送辊道，首先经过高压水除磷设备进行表面处理，将连铸板坯表面的氧化铁皮除去；3) After the continuous casting slab is heated to the target temperature, the tapping enters the main rolling line's steel conveying roller table, and first passes through the high-pressure water dephosphorization equipment for surface treatment to remove the oxide scale on the surface of the continuous casting slab;
4)高压水除磷后的连铸板坯到达定宽压力机进行在线宽度调整，达到立辊轧机前所需要的宽度；随后连铸板坯到达立辊，通过立辊对连铸板坯的平面形状、头部形状、尾部形状、边部形状进行调整，以便于后续得到良好的钢板宽度尺寸精度；4) The continuous casting slab after dephosphorization by high-pressure water reaches the fixed width press for online width adjustment to reach the required width before the vertical roll mill; then the continuous casting slab reaches the vertical roller, and the continuous casting slab is transferred by the vertical roller to the continuous casting slab. The plane shape, head shape, tail shape, and edge shape are adjusted to facilitate the subsequent acquisition of good steel plate width dimensional accuracy;
5)出立辊轧机的连铸板坯至四辊粗轧机进行中间坯的轧制，将连铸板坯轧到设定的厚度和宽度，在应急情况下还可以单机架轧制成品；钢板不进行展宽轧制；5) The continuous casting slab from the vertical rolling mill is transferred to the four-high roughing mill for the rolling of the intermediate slab, and the continuous casting slab is rolled to the set thickness and width. In an emergency, the finished product can also be rolled in a single stand; No widening rolling is carried out;
6)粗轧后的板坯到达四辊精轧机后，根据设定的道次数、咬钢速度、压下量参数，将板坯轧成要求的的钢板宽度和厚度，并得到良好的板形和同板差，同时实现不同控温要求钢板的终轧温度；6) After the rough-rolled slab reaches the four-high finishing mill, the slab is rolled to the required steel plate width and thickness according to the set number of passes, steel biting speed, and reduction parameters, and a good plate shape is obtained Different from the same plate, and realize the final rolling temperature of the steel plate with different temperature control requirements at the same time;
7)钢板完成成品轧制以后将根据是否有控冷要求通过ACC加速冷却装置，若有冷却要求，则按照模型设定的冷却速度、流量、通过速度等参数进行在线冷却，以达到目标终冷温度，从而提升钢板的力学性能；对于无控冷要求的钢板则直接空 过ACC加速冷却装置；7) After the steel plate is finished rolling, it will pass the ACC accelerated cooling device according to whether there is a controlled cooling requirement. If there is a cooling requirement, it will be cooled online according to the cooling speed, flow rate, passing speed and other parameters set by the model to achieve the target final cooling Temperature, so as to improve the mechanical properties of the steel plate; for steel plates without controlled cooling requirements, directly pass the ACC accelerated cooling device;
8)钢板经过冷却装置之后以一个道次的矫直工艺经过热矫直机，以改善钢板板形；若轧制板形较差，也可增加矫直道次；8) After the steel plate passes through the cooling device, it passes through a hot straightening machine with one pass of straightening process to improve the shape of the steel plate; if the rolled plate shape is poor, the straightening pass can also be increased;
9)热矫直出来之后钢板在1#标记装置处进行中间过程标记，以便于钢板中间过程追溯；9) After hot straightening, the steel plate is marked in the middle process at the 1# marking device to facilitate the traceability of the middle process of the steel plate;
10)标记好的钢板钢板轧在热分段剪处进行分段，以便满足上冷床的最大长度要求；分段后，钢板可根据物流情况选择不同的冷床进行冷却；对于需要直通的钢板也可不上冷床，直接从输送辊道进入剪切线的剪切辊道；10) The marked steel plate is rolled into sections at the hot section shear to meet the maximum length requirements of the upper cooling bed; after sectioning, the steel plate can be cooled by different cooling beds according to the logistics situation; for the steel plate that needs to pass through It is also possible to directly enter the shearing roller table of the shearing line from the conveying roller table without using the cooling bed;
11)钢板冷却结束后进入两个检查台架中的一个进行检查以及运输至剪切线的剪切辊道；11) After the steel plate is cooled, enter one of the two inspection stands for inspection and transport to the shearing roller table of the shearing line;
12)钢板经过检查台架后，温度降至80℃以下，进入探伤装置根据不同的探伤要求进行探伤操作，不需要探伤的钢板直接空过该探伤装置；12) After the steel plate passes through the inspection platform, the temperature drops below 80℃, and enters the flaw detection device to perform flaw detection operations according to different flaw detection requirements. The steel plate that does not need flaw detection directly passes through the flaw detection device;
13)钢板探伤完成后进入切头剪进行切头尾，切除头部的“舌形”部分，并对长度大于30m进行分段，分段长度根据辊道长度进行调整；以上的钢板进行分段，为后面的边部剪切做好准备；若钢板的尾部形状不良，则必须进行切尾处理；13) After the steel plate flaw detection is completed, enter the cutting shears to cut the head and tail, cut off the "tongue-shaped" part of the head, and segment the length greater than 30m. The segment length is adjusted according to the length of the roller table; the above steel plates are segmented , To prepare for the rear edge cutting; if the shape of the tail of the steel plate is not good, it must be trimmed;
14)钢板切完头尾后进入双边剪，用于切除钢板两侧的毛边，双边剪的移动剪根据所剪的成品宽度预先调定位置；14) After cutting the head and tail of the steel plate, it enters the bilateral shears, which is used to cut the burrs on both sides of the steel plate. The mobile shear of the bilateral shears presets the position according to the width of the finished product to be cut;
15)双边剪切完成后，钢板在标记装置进行试样喷印，若钢板没有试样，则空过标记装置；15) After the bilateral shearing is completed, the steel plate is sprayed with the sample in the marking device. If the steel plate has no sample, the marking device will be blanked;
16)钢板经过标记装置后，进入定尺剪，定尺剪将钢板剪切成最终合同所要求的长度；同时对有取样钢板要的进行取样，取完的大样送试样剪进行下一步加工和性能测试；16) After the steel plate passes through the marking device, it enters the cut-to-length shear, and the cut-to-length shear cuts the steel plate to the length required by the final contract; at the same time, sample the steel plate that needs to be sampled, and send the large sample to the sample shear for the next step Processing and performance testing;
17)钢板成品切割完毕后进入喷印机进行成品喷印，将合同信息、钢种、船级社标志、探伤要求信息喷印在钢板上；如果钢板板形不好则只喷印板号，后续同过横移台架转冷矫喷印；若需要翻板则横移至翻板机进行翻板检查；17) After the finished steel plate is cut, enter the printer to print the finished product, and print the contract information, steel grade, classification society logo, and flaw detection requirement information on the steel plate; if the steel plate is not well shaped, only the plate number will be printed. Follow up with the traverse platform to cold-straightening printing; if it needs to turn the plate, move it horizontally to the plate turning machine for turning plate inspection;
18)钢板喷印结束后进入产品最终检查点进行检查，若经过检查钢板没有问题直接经过预堆垛机后通过辊道入库堆放；若钢板板形有问题，则经过横移台架分别进入冷矫直机进行板形矫正，矫完之后在标记装置进行标记；标记完成之后通过输送辊道进入成品库，并根据堆垛要求分别经成品收集台架进入成品库垛位堆放，等 待出厂。18) After the steel plate printing is finished, enter the final inspection point of the product for inspection. If the steel plate has no problem after the inspection, the steel plate will pass through the pre-stacker and be stacked in the warehouse through the roller conveyor; if the plate shape of the steel plate is defective, enter the product through the traverse platform. The cold straightening machine performs plate shape correction, and after the correction is completed, the marking device is marked; after the marking is completed, it enters the finished product warehouse through the conveyor roller, and enters the finished product warehouse stacking position through the finished product collection platform according to the stacking requirements, and waits for delivery.
根据本发明的一个实施例，步骤5)后，如对板坯有控温精轧要求的，在粗轧后通过中间冷却装置进行喷水冷却，可根据冷却模型计算的流量、速度参数实现不同要求的板坯控温功能；部分无控温要求的板坯则直接空过中间冷却装置。According to an embodiment of the present invention, after step 5), if the slab has a temperature control finish rolling requirement, the water spray cooling is performed through the intermediate cooling device after the rough rolling, which can be different according to the flow rate and speed parameters calculated by the cooling model. The required slab temperature control function; some slabs without temperature control requirements are directly passed through the intermediate cooling device.
本发明的有益效果：The beneficial effects of the present invention:
1.采用本发明生产线布置和生产方法，生产规模可达到300万吨/年，高效率生产，降低生产成本；1. Using the production line layout and production method of the present invention, the production scale can reach 3 million tons/year, high-efficiency production, and lower production costs;
2.本发明采用超长轧制，成材率可达到≥94％；2. The invention adopts ultra-long rolling, and the yield rate can reach ≥94%;
3.本发明生产线布置合理利于操作室合并，主线可最少设置8个操作室，减少操作人员数量，提高劳动生产效率50％以上；3. Reasonable layout of the production line of the present invention is conducive to the merger of operation rooms, and the main line can be equipped with at least 8 operation rooms, which reduces the number of operators and improves labor and production efficiency by more than 50%;
4.板坯直通至加热炉区域，热装率可达60％以上；4. The slab is directly connected to the heating furnace area, and the hot charging rate can reach more than 60%;
5.本发明工艺布置检修方便，各机组设备备件可以方便的进出厂房；5. The process layout of the present invention is convenient for maintenance, and the spare parts of each unit can easily enter and exit the workshop;
本发明生产线仅占用3个厂房跨，占地面积小，生产效率高。The production line of the present invention only occupies 3 workshop spans, has a small floor area and high production efficiency.
附图概述Brief description of the drawings
本发明上述的以及其他的特征、性质和优势将通过下面结合附图和实施例的描述而变的更加明显，在附图中相同的附图标记始终表示相同的特征，其中：The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the drawings and embodiments. In the drawings, the same reference numerals always indicate the same features, among which:
图1为本发明实施例1的工艺布置示意图1。FIG. 1 is a schematic diagram 1 of the process layout of Embodiment 1 of the present invention.
图2为本发明实施例1的工艺布置示意图2。FIG. 2 is a schematic diagram 2 of the process layout of Embodiment 1 of the present invention.
图3为本发明实施例2的工艺布置示意图1。FIG. 3 is a schematic diagram 1 of the process layout of Embodiment 2 of the present invention.
图4为本发明实施例2的工艺布置示意图2。FIG. 4 is a schematic diagram 2 of the process layout of Embodiment 2 of the present invention.
本发明的较佳实施方式Preferred embodiment of the present invention
为了更清楚的说明本发明的技术方案和优点，结合附图说明具体实施方式。此处仅仅用以解释本发明，不对本发明有任何限定作用。In order to more clearly illustrate the technical solutions and advantages of the present invention, specific implementations are described with reference to the accompanying drawings. Here is only used to explain the present invention, and does not have any limiting effect on the present invention.
参见图1、图2，本发明所述一种高效的双机架双剪切线直通中厚板生产线，其包括：一主轧线L，两条平行设置的剪切线C1、C2，分别平行设置于所述每条剪切线C1、C2外侧的矫直堆垛线S1、S2；所述剪切线中的一条剪切线C1与所述主轧线L直通布置；其中，Referring to Figures 1 and 2, the high-efficiency double-stand double-cutting line of the present invention passes through the plate production line, which includes: a main rolling line L, two parallel cutting lines C1, C2, respectively Straightening stacking lines S1, S2 arranged in parallel on the outside of each of the shearing lines C1 and C2; one of the shearing lines C1 and the main rolling line L are directly arranged; wherein,
所述主轧线L包括：沿轧钢输送辊道依次设置加热炉1、高压水除鳞2、定宽 压力机3、立辊4、四辊粗轧机5、中间冷却装置6、四辊精轧机7、ACC加速冷却装置8、热矫直机9、1#标记装置10、热分段剪11、分别设置于轧钢输送辊道两侧的1#冷床12、1#检查台架13及2#冷床14、2#检查台架15；The main rolling line L includes: a heating furnace 1, high-pressure water descaling 2, a fixed width press 3, a vertical roll 4, a four-high roughing mill 5, an intermediate cooling device 6, and a four-high finishing mill are arranged in sequence along the steel conveying roller table. 7. ACC accelerated cooling device 8, hot straightening machine 9, 1# marking device 10, hot segment shear 11, 1 # cooling bed 12, 1 # inspection bench 13 and 2 respectively arranged on both sides of the steel rolling conveyor roller table #冷床14、2# Inspection bench 15;
每条剪切线C1(以剪切线C1为例，下同)包括剪切输送辊道、沿剪切输送辊道依次设置超声波探伤16、切头剪17、双边剪18、2#标记装置19、定尺剪20、3#标记装置21、预堆垛机22；所述剪切线C1、C2之间设置一翻板机23；Each cutting line C1 (take the cutting line C1 as an example, the same below) includes the cutting conveyor roller, and the ultrasonic flaw detection 16, the cutting shear 17, the bilateral shear 18, and the 2# marking device are arranged in sequence along the shearing conveyor roller. 19. Cut-to- length shear 20, 3# marking device 21, pre-stacker 22; a plate turning machine 23 is set between the cutting lines C1 and C2;
所述矫直堆垛线S1(矫直堆垛线S1为例，下同)包括矫直输送辊道、沿矫直输送辊道依次设置冷矫直机24、4#标记装置25及设置于矫直输送辊道两侧的成品收集台架26、26’；The straightening stacking line S1 (the straightening stacking line S1 is an example, the same below) includes a straightening conveying roller table, a cold straightening machine 24, 4# marking device 25 and a set at The finished product collection stands 26 and 26' on both sides of the straightening conveyor roller;
所述剪切线C1与所述矫直堆垛线S1之间设置横移台架27。A traverse platform 27 is provided between the cutting line C1 and the straightening and stacking line S1.
优选的，所述加热炉1设有至少三座，沿加热炉辊道依次设去毛刺机28、称重机29；优选的，所述加热炉辊道与连铸辊道直通。Preferably, the heating furnace 1 is provided with at least three, and a deburring machine 28 and a weighing machine 29 are sequentially arranged along the heating furnace roller table; preferably, the heating furnace roller table is directly connected to the continuous casting roller table.
参见图3、图4，本发明所述1#冷床12设置于所述热分段剪11前的轧钢输送辊道的一侧，即1#冷床12和1#检查台架13距离分开布置，部分需要堆冷的钢板可以直接在1#检查台架和1#冷床之间的空地处，可以借助1#冷床和1#检查台架设备形成天然的保温堆冷区间，更加有利于提升钢板的堆冷效果；另外，这种布置也有利于缓解冷床轧钢和精整线交接处的物流，有更大的钢板缓冲区域，利于产能的发挥。Referring to Figures 3 and 4, the 1# cooling bed 12 of the present invention is set on one side of the rolling conveying roller table before the hot segment shear 11, that is, 1 # cooling bed 12 and 1# inspection bench 13 are separated by a distance Layout, part of the steel plates that need stack cooling can be directly placed in the space between 1# inspection bench and 1# cooling bed, and you can use 1# cooling bed and 1# inspection bench equipment to form a natural insulation stack cooling zone, which is more effective It is beneficial to improve the stack cooling effect of the steel plate; in addition, this arrangement also helps to ease the logistics at the junction of the cold bed rolling steel and the finishing line, and has a larger steel plate buffer area, which is conducive to the development of production capacity.
优选的，所述加热炉一侧设板坯库，该板坯库和加热炉设一个操作室；所述主轧线中四辊粗轧机至ACC加速冷却装置设一个操作室。Preferably, a slab storage is provided on one side of the heating furnace, and an operating room is provided for the slab storage and the heating furnace; and an operating chamber is provided for the four-high roughing mill to the ACC accelerated cooling device in the main rolling line.
优选的，平行布置的两条剪切线之间设若干可同时控制两条剪切线相应设备的操作室；其中，对应热矫直机、冷床、检查台架、超声波探伤、切头剪设一个操作室；对应双边剪设一个操作室；对应定尺剪、检查点、预堆垛机设一个操作室。Preferably, there are several operating rooms between the two cutting lines arranged in parallel, which can control the corresponding equipment of the two cutting lines at the same time; among them, corresponding to the hot straightening machine, cooling bed, inspection bench, ultrasonic flaw detection, and cutting shears. Set up an operating room; set up an operating room corresponding to bilateral shears; set up an operating room corresponding to cut-to-length shears, check points, and pre-stackers.
本发明所述高效的双机架双剪切线直通中厚板生产线生产中厚板的方法，其包括如下步骤：The method for producing medium-thick plates with high-efficiency double-frame double-cutting lines directly connected to a medium-thick plate production line of the present invention includes the following steps:
1)连铸板坯通过连铸辊道直接在线以最高的温度送至加热炉1前加热炉辊道，进行去毛刺、称重；1) The continuous casting slab is directly sent online to the heating furnace roller table in front of the heating furnace 1 through the continuous casting roller table at the highest temperature for deburring and weighing;
2)连铸板坯称重后根据装炉计划装入一个加热炉1进行加热；2) After the continuous casting slab is weighed, it is loaded into a heating furnace 1 for heating according to the furnace loading plan;
3)连铸板坯加热至目标温度后，出钢进入主轧线轧钢输送辊道，首先经过高 压水除磷设备2进行表面处理，将连铸板坯表面的氧化铁皮除去；3) After the continuous casting slab is heated to the target temperature, the tapping enters the main rolling line's steel conveying roller table, and first passes through the high-pressure water dephosphorization equipment 2 for surface treatment to remove the oxide scale on the surface of the continuous casting slab;
4)高压水除磷后的连铸板坯到达定宽压力3机进行在线宽度调整，达到立辊轧机前所需要的宽度；随后连铸板坯到达立辊4，通过立辊4对连铸板坯的平面形状、头部形状、尾部形状、边部形状进行调整，以便于后续得到良好的钢板宽度尺寸精度；4) The continuous casting slab after high-pressure water dephosphorization reaches the fixed width press 3 machine for online width adjustment to reach the required width before the vertical roll mill; then the continuous casting slab reaches the vertical roll 4, and the vertical roll 4 pairs the continuous casting The plane shape, head shape, tail shape, and edge shape of the slab are adjusted to facilitate the subsequent acquisition of good steel plate width dimensional accuracy;
5)出立辊轧机的连铸板坯至四辊粗轧机5进行中间坯的轧制，将连铸板坯轧到设定的厚度和宽度，在应急情况下还可以单机架轧制成品；钢板不进行展宽轧制；5) The continuous casting slab from the vertical rolling mill is transferred to the four-high roughing mill 5 to roll the intermediate slab, and the continuous casting slab is rolled to the set thickness and width, and the finished product can be rolled in a single stand in case of emergency; The steel plate is not subject to widening rolling;
6)粗轧后的板坯到达四辊精轧机7后，根据设定的道次数、咬钢速度、压下量参数，将板坯轧成要求的的钢板宽度和厚度，并得到良好的板形和同板差，同时实现不同控温要求钢板的终轧温度；6) After the rough-rolled slab reaches the four-high finishing mill 7, according to the set number of passes, biting speed, and reduction parameters, the slab is rolled to the required width and thickness of the steel plate, and a good plate is obtained The shape and difference of the same plate can realize the final rolling temperature of the steel plate with different temperature control requirements at the same time;
7)钢板完成成品轧制以后将根据是否有控冷要求通过ACC加速冷却装置8，若有冷却要求，则按照模型设定的冷却速度、流量、通过速度等参数进行在线冷却，以达到目标终冷温度，从而提升钢板的力学性能；对于无控冷要求的钢板则直接空过ACC加速冷却装置8；7) After the steel plate is finished rolling, it will pass through the ACC accelerated cooling device 8 according to whether there is a controlled cooling requirement. If there is a cooling requirement, it will be cooled on-line according to the cooling speed, flow rate, passing speed and other parameters set by the model to achieve the target end Cooling temperature, thereby improving the mechanical properties of the steel plate; for steel plates without controlled cooling requirements, directly pass the ACC accelerated cooling device 8;
8)钢板经过冷却装置之后以一个道次的矫直工艺经过热矫直机9，以改善钢板板形；若轧制板形较差，也可增加矫直道次；8) After the steel plate passes through the cooling device, it passes through the hot straightening machine 9 with one pass of straightening process to improve the shape of the steel plate; if the rolled plate shape is poor, the straightening pass can also be increased;
9)热矫直出来之后钢板在1#标记装置10处进行中间过程标记，以便于钢板中间过程追溯；9) After hot straightening, the steel plate is marked in the middle process at 1# marking device 10 to facilitate the traceability of the middle process of the steel plate;
10)标记好的钢板轧在热分段剪11处进行分段，以便满足上冷床的最大长度要求；分段后，钢板可根据物流情况选择不同的冷床12、14进行冷却；对于需要直通的钢板也可不上冷床，直接从输送辊道进入剪切线的剪切辊道；10) The marked steel plate is rolled at the hot segment shear 11 to be segmented to meet the maximum length of the upper cooling bed; after segmentation, the steel plate can be cooled by different cooling beds 12 and 14 according to the logistics situation; The straight steel plate can also enter the shearing roller table of the shearing line directly from the conveying roller table without going to the cooling bed;
11)钢板冷却结束后进入两个检查台架13、15中的一个进行检查以及运输至剪切线的剪切辊道；11) After the steel plate is cooled, enter one of the two inspection stands 13, 15 for inspection and transport to the shearing roller table of the shearing line;
12)钢板经过检查台架13、15后，温度降至80℃以下，进入探伤装置16根据不同的探伤要求进行探伤操作，不需要探伤的钢板直接空过该探伤装置16；12) After the steel plate passes through the inspection benches 13, 15, the temperature drops below 80℃, and enters the flaw detection device 16 to perform flaw detection operations according to different flaw detection requirements. The steel plate that does not need flaw detection directly passes through the flaw detection device 16;
13)钢板探伤完成后进入切头剪17进行切头尾，切除头部的“舌形”部分，并对长度大于30m进行分段，分段长度根据辊道长度进行调整；以上的钢板进行分段，为后面的边部剪切做好准备；若钢板的尾部形状不良，则必须进行切尾处理；13) After the steel plate flaw detection is completed, enter the cutting shear 17 to cut the head and tail, cut off the "tongue-shaped" part of the head, and segment the length greater than 30m. The segment length is adjusted according to the length of the roller table; the above steel plates are divided Section, prepare for the rear edge cutting; if the shape of the tail of the steel plate is not good, it must be trimmed;
14)钢板切完头尾后进入双边剪18，用于切除钢板两侧的毛边，双边剪18 的移动剪根据所剪的成品宽度预先调定位置；14) After cutting the head and tail of the steel plate, enter the bilateral shear 18 to cut the burrs on both sides of the steel plate. The mobile shear of the bilateral shear 18 is preset according to the width of the finished product to be cut;
15)双边剪18切完成后，钢板在标记装19置进行试样喷印，若钢板没有试样，则空过标记装置；15) After the double-side shear 18 is cut, the steel plate is set in the marking device 19 for sample printing. If the steel plate has no sample, the marking device is blanked;
16)钢板经过标记装置后，进入定尺剪20，定尺剪20将钢板剪切成最终合同所要求的长度；同时对有取样钢板要的进行取样，取完的大样送试样剪进行下一步加工和性能测试；16) After the steel plate passes through the marking device, it enters the cut-to-length shear 20. The cut-to-length shear 20 cuts the steel plate to the length required by the final contract; at the same time, sample the steel plate that needs to be sampled, and send the large sample to the sample cutter. Next processing and performance test;
17)钢板成品切割完毕后进入喷印机进行成品喷印，将合同信息、钢种、船级社标志、探伤要求信息喷印在钢板上；如果钢板板形不好则只喷印板号，后续通过横移台架27转冷矫喷印；若需要翻板则横移至翻板机23进行翻板检查；17) After the finished steel plate is cut, enter the printer to print the finished product, and print the contract information, steel grade, classification society logo, and flaw detection requirement information on the steel plate; if the steel plate is not well shaped, only the plate number will be printed. Afterwards, it is transferred to cold-straightening and printing by the horizontal moving platform 27; if it is necessary to turn the plate, it is moved horizontally to the plate turning machine 23 for plate turning inspection;
18)钢板喷印结束后进入产品最终检查点进行检查，若经过检查钢板没有问题直接经过预堆垛机22后通过辊道入库堆放；若钢板板形有问题，则经过横移台架27分别进入冷矫直机24进行板形矫正，矫完之后在标记装置25进行标记；标记完成之后通过输送辊道进入成品库，并根据堆垛要求分别经成品收集台架26进入成品库垛位堆放，等待出厂。18) After the steel plate printing is finished, enter the final inspection point of the product for inspection. If the steel plate has no problems after inspection, the steel plate will pass through the pre-stacker 22 and be stacked in the warehouse through the roller conveyor; if the plate shape of the steel plate is defective, go through the traverse table 27 Enter the cold straightening machine 24 for plate shape correction, and mark at the marking device 25 after the correction; after the marking is completed, it enters the finished product warehouse through the conveyor roller, and enters the finished product warehouse stacking position through the finished product collection platform 26 according to the stacking requirements. Stacked, waiting to leave the factory.
优选的，步骤5)后，如对板坯有控温精轧要求的，在粗轧后通过中间冷却装置6进行喷水冷却，可根据冷却模型计算的流量、速度参数实现不同要求的板坯控温功能；部分无控温要求的板坯则直接空过中间冷却装置6。Preferably, after step 5), if the slab has a temperature control finish rolling requirement, after the rough rolling, the intercooling device 6 is used for water spray cooling, and the slabs with different requirements can be realized according to the flow rate and speed parameters calculated by the cooling model. Temperature control function; some slabs without temperature control requirements are directly passed through the intermediate cooling device 6.
实施例Example
1)一块厚度250mm，宽度2200mm，长度8000mm的Q345qD板坯，重量34.54t，从连铸辊道送至厚板加热炉辊道，在经过去毛刺机处理后装入1#加热炉1进行加热，钢板装入温度600℃，目标加热温度1080℃，钢板实绩出钢温度1085℃；1) A Q345qD slab with a thickness of 250mm, a width of 2200mm, and a length of 8000mm, weighing 34.54t, is sent from the continuous casting roller table to the thick plate heating furnace roller table, and is put into 1# heating furnace 1 for heating after being processed by the deburring machine , The steel plate loading temperature is 600℃, the target heating temperature is 1080℃, and the actual steel plate temperature is 1085℃;
2)出炉后达到高压除磷设备2，除磷压力210bar，除磷速度1.2m/s，每组喷嘴用水量290m3/h；2) After the furnace is discharged, it reaches the high-pressure dephosphorization equipment 2, dephosphorization pressure 210bar, dephosphorization speed 1.2m/s, and water consumption of each group of nozzles is 290m3/h;
3)钢板经过定宽压力机3，侧压调宽50mm；3) The steel plate passes through the fixed width press 3, and the lateral pressure is adjusted to 50mm in width;
4)立辊轧制：立辊4轧制1道次，轧制力100吨，轧制速度2m/s；4) Vertical roll rolling: 4 vertical rolls rolled 1 pass, rolling force 100 tons, rolling speed 2m/s;
5)粗轧机轧制：钢板在粗轧入口测温温度1030度，钢板经过9道次由250mm轧制移交厚度76mm，轧制速度2m/s，最大轧制力6300吨，最大扭矩3000千牛米；5) Rough rolling mill rolling: the temperature of the steel plate is measured at 1030 degrees at the entrance of the rough rolling, the steel plate is rolled from 250mm to 76mm in thickness after 9 passes, the rolling speed is 2m/s, the maximum rolling force is 6,300 tons, and the maximum torque is 3,000 kN. Meter;
6)中间冷却：中间冷却将钢板降温至880度，移交精轧机7轧制；6) Intermediate cooling: Intermediate cooling reduces the temperature of the steel plate to 880 degrees and transfers it to finishing mill 7 for rolling;
7)精轧机轧制：钢板在精轧机7入口测温880度开轧，轧制9道次，其中带负荷8道次，末道次空过，前6道次轧制速度7m/s，最后道次轧制速度4m/s，最大压下量20mm，最后带载道次压下率10％，钢板终轧温度780度；钢板轧制尺寸：20*2150*102300mm，完成轧制后移交ACC冷却；7) Finishing rolling mill rolling: The steel plate is rolled at the entrance of the finishing mill 7 at a temperature of 880 degrees, and rolled 9 passes, of which 8 passes are loaded, the last pass is empty, and the rolling speed of the first 6 passes is 7m/s. The rolling speed of the final pass is 4m/s, the maximum reduction is 20mm, the reduction rate of the final load pass is 10%, and the final rolling temperature of the steel plate is 780 degrees; the rolling size of the steel plate: 20*2150*102300mm, handed over after the completion of rolling ACC cooling;
8)ACC冷却工艺，冷速15℃/s，开冷温度780℃，终冷温度540℃，钢板冷却后进入热矫直机9矫直；8) ACC cooling process, the cooling speed is 15℃/s, the cooling temperature is 780℃, and the final cooling temperature is 540℃. After the steel plate is cooled, it enters the hot straightening machine 9 for straightening;
9)热矫工艺，一个矫直道次，矫直力300吨，辊缝19.5mm，矫直速度2.5m/s；9) Hot straightening process, one straightening pass, straightening force 300 tons, roll gap 19.5mm, straightening speed 2.5m/s;
10)喷印，钢板在热矫直机9喷印当日板号位29A01130000，表示2019年10月1日第130块大板；10) Spray printing, the steel plate is printed on the hot straightening machine 9 at the plate number 29A01130000 of the day, which means the 130th large plate on October 1, 2019;
11)钢板在热分段剪11进行分段，分段后成两块钢板长度分别为48m和47.6m长度，两块钢板分别进入1#冷床12和2#冷床14；11) The steel plate is segmented in the hot segment shear 11, and after segmentation, two steel plates are formed with a length of 48m and 47.6m respectively. The two steel plates enter 1 # cooling bed 12 and 2# cooling bed 14 respectively;
12)通过冷床横移，两块子板分别经过检查1#台架13和2#检查台架15，温度降至80℃以下，然后经过1#探伤装置和2#探伤装置进行探伤，探伤速度0.3m/s-1m/s；12) Through the horizontal movement of the cooling bed, the two sub-boards are inspected respectively by 1 # trestle 13 and 2# inspection trestle 15, and the temperature drops below 80℃, and then pass the 1# flaw detection device and 2# flaw detection device for flaw detection. Speed 0.3m/s-1m/s;
13)探伤结束后钢板到1#切头剪和2#切头剪位置后，切除钢板头尾圆角，以及进行粗切，粗切后产生4块钢板，长度分别为23500mm(钢板1)，长度23500mm(钢板2)，长度23000mm(钢板3)，长度29000mm(钢板4)；13) After the flaw detection, the steel plate reaches the position of 1# and 2# cutting shears, cut off the head and tail fillet of the steel plate, and perform rough cutting. After rough cutting, 4 steel plates are produced, each with a length of 23500mm (steel plate 1). Length 23500mm (steel plate 2), length 23000mm (steel plate 3), length 29000mm (steel plate 4);
14)分段后钢板进入1#双边剪和2#双边剪进行边部剪切，剪刃间隙设定2.0mm，以每分钟最大30次的剪切频率及1,300mm/1050mm的剪切步长进行剪切，剪切钢板的两边根据钢板镰刀弯情况切边量略有差别，剪切后4块钢板宽度为2051mm、2049mm、2050mm、2050mm，后续钢板经过试样喷印机；14) After sectioning, the steel plate enters 1# double-side shear and 2# double-side shear for edge cutting. The cutting blade gap is set to 2.0mm, with a maximum cutting frequency of 30 times per minute and a cutting step length of 1,300mm/1050mm For shearing, the trimming amount of the two sides of the sheared steel plate is slightly different according to the bending of the steel plate. The width of the 4 steel plates after shearing is 2051mm, 2049mm, 2050mm, 2050mm, and the subsequent steel plates are passed through the sample printing machine;
15)钢板在3#标记装置21进行试样号标记，其余钢板空过试样喷印机；15) The steel plate is marked with the sample number on the 3# marking device 21, and the remaining steel plates pass through the sample printing machine;
16)1#定尺剪和2#定尺剪根据合同长度，钢板切成成品长度分别为14500mm、9000mm、12500mm、11000mm、12000mm、11000mm、12000mm、16880mm，取大样1块，长度120mm，试样送加工操作室进行小样加工，并做性能测试；16) According to the contract length of 1# fixed-length shears and 2# fixed-length shears, the steel plates are cut into finished lengths of 14500mm, 9000mm, 12500mm, 11000mm, 12000mm, 11000mm, 12000mm, 16880mm respectively. Take 1 large sample with a length of 120mm. Send the sample to the processing operation room for small sample processing and perform performance testing;
17)钢板定尺完成后进入4#标记装置25或者5#标记装置进行成品喷印，将合同尺寸、钢板牌号、重量、探伤要求、船级社标志等信息喷印在钢板上，其中钢板1和2因为板形问题空过标记装置；17) After the steel plate is set to length, enter the 4 # marking device 25 or 5# marking device to print the finished product, and print the contract size, steel plate number, weight, flaw detection requirements, classification society logo and other information on the steel plate, of which steel plate 1 And 2 The marking device is empty due to the shape of the board;
18)6块小板经检查，表面、外观、喷印均无问题，在1#预堆垛机和2#预堆垛机22堆垛后分别经过3#和5#成品收集台架26入库堆放；其中2块板形不良的经过1#和3#横移台架27送往1#矫直机和2#矫直机进行板形校正；18) 6 small boards have been inspected, and there are no problems with the surface, appearance and printing. After stacking by the 1# pre-stacker and the 2# pre-stacker 22, they pass through the 3# and 5# finished product collection platform 26 respectively. Stacked in the warehouse; 2 of them with bad plate shape are sent to the 1# straightening machine and 2# straightening machine through the 1# and 3# traversing platform 27 for plate shape correction;
2块板形不良钢板完成矫直后在6#和7#标记装置完成最终成品喷印，然后通过4#和6#成品收集台架进入成品库堆放。After the straightening of the 2 poor-shaped steel plates, the final product is sprayed and printed on the 6# and 7# marking devices, and then the 4# and 6# finished product collection racks enter the finished product warehouse for stacking.
虽然以上描述了本发明的具体实施方式，但是本领域的技术人员应当理解，这些仅是举例说明，本发明的保护范围是由所附权利要求书限定的。本领域的技术人员在不背离本发明的原理和实质的前提下，可以对这些实施方式作出多种变更或修改，但这些变更和修改均落入本发明的保护范围。Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims (10)

  1. 一种高效的双机架双剪切线直通中厚板生产线，其特征在于，包括：一主轧线，至少两条平行设置的剪切线，分别平行设置于所述每条剪切线外侧的矫直堆垛线；所述剪切线中的一条剪切线与所述主轧线直通布置；其中，A high-efficiency double-stand double-cutting line straight through medium and heavy plate production line, which is characterized in that it comprises: a main rolling line, at least two parallel cutting lines, which are respectively arranged in parallel outside each of the cutting lines The straightening and stacking line; one of the shearing lines is directly arranged with the main rolling line; wherein,
    所述主轧线包括：沿轧钢输送辊道依次设置加热炉、高压水除鳞、定宽压力机、立辊、四辊粗轧机、中间冷却装置、四辊精轧机、ACC加速冷却装置、热矫直机、1#标记装置、热分段剪、分别设置于轧钢输送辊道两侧的1#冷床、1#检查台架及2#冷床、2#检查台架；The main rolling line includes: heating furnace, high pressure water descaling, fixed width press, vertical roll, four-high roughing mill, intermediate cooling device, four-high finishing mill, ACC accelerated cooling device, heat Straightening machine, 1# marking device, hot segmented shears, 1# cooling bed, 1# inspection bench and 2# cooling bed, 2# inspection bench respectively arranged on both sides of the steel rolling conveyor roller table;
    所述剪切线中的一条剪切线与所述主轧线轧钢输送辊道直通布置；每条所述剪切线包括剪切输送辊道，沿所述剪切输送辊道依次设置超声波探伤、切头剪、双边剪、2#标记装置、定尺剪、3#标记装置、预堆垛机；所述剪切线之间设置一翻板机；One of the shearing lines is directly arranged with the main rolling line's steel rolling conveying roller table; each of the shearing lines includes a shearing conveying roller table, and ultrasonic flaw detection is sequentially arranged along the shearing conveying roller table , Head-cutting shears, bilateral shears, 2# marking device, fixed-length shears, 3# marking device, pre-stacker; a plate turning machine is set between the cutting lines;
    所述矫直堆垛线包括矫直输送辊道，沿所述矫直输送辊道依次设置冷矫直机、4#标记装置及设置于所述矫直输送辊道两侧的成品收集台架；The straightening and stacking line includes a straightening and conveying roller table. A cold straightening machine, 4# marking device and a finished product collection platform arranged on both sides of the straightening and conveying roller table are arranged in sequence along the straightening and conveying roller table. ；
    所述剪切线与所述矫直堆垛线之间设置横移台架。A traverse platform is arranged between the shearing line and the straightening and stacking line.
  2. 如权利要求1所述的高效的双机架双剪切线直通中厚板生产线，其特征在于，所述1#冷床设置于所述热分段剪前的轧钢输送辊道的一侧。The high-efficiency double-stand double-shearing line direct-through medium and heavy plate production line according to claim 1, wherein the 1# cooling bed is arranged on one side of the steel rolling conveying roller table before the hot section shearing.
  3. 如权利要求1所述的高效的双机架双剪切线直通中厚板生产线，其特征在于，所述加热炉设有至少三座，沿加热炉辊道依次设有去毛刺机、称重机。The high-efficiency double-frame double-shearing line through the medium and heavy plate production line according to claim 1, wherein the heating furnace is provided with at least three, and the deburring machine and the weighing machine are sequentially arranged along the roller table of the heating furnace. machine.
  4. 如权利要求3所述的高效的双机架双剪切线直通中厚板生产线，其特征在于，所述加热炉辊道与连铸辊道直通。The high-efficiency double-frame double-shearing line is directly connected to the medium and heavy plate production line according to claim 3, wherein the heating furnace roller table is directly connected to the continuous casting roller table.
  5. 如权利要求1所述的高效的双机架双剪切线直通中厚板生产线，其特征在于，所述加热炉一侧设板坯库，该板坯库和加热炉设一个操作室；所述主轧线中四辊粗轧机至ACC加速冷却装置设一个操作室。The high-efficiency double-frame double-cutting line direct-through medium and thick plate production line according to claim 1, wherein a slab warehouse is provided on one side of the heating furnace, and an operating room is provided for the slab warehouse and the heating furnace; In the main rolling line, there is an operating room from the four-high roughing mill to the ACC accelerated cooling device.
  6. 如权利要求1所述的高效的双机架双剪切线直通中厚板生产线，其特征在于，两条所述剪切线分别布置于两个厂房跨内。The high-efficiency double-frame double-cutting line through the medium and heavy plate production line according to claim 1, wherein the two cutting lines are respectively arranged in two workshop spans.
  7. 如权利要求1或6所述的高效的双机架双剪切线直通中厚板生产线，其特征在于，平行布置的两条剪切线之间设若干可同时控制两条所述剪切线相应设备的操作室；其中，对应所述热矫直机、所述冷床、所述检查台架、所述超声波探伤、所述切头剪设一个操作室；对应所述双边剪设一个操作室；对应所述定尺剪、所述检查点、所述预堆垛机设一个操作室。The high-efficiency double-frame double-cutting line direct-through medium and heavy plate production line according to claim 1 or 6, characterized in that there are several parallelly arranged cutting lines between two cutting lines that can simultaneously control the two cutting lines The operating room of the corresponding equipment; wherein, one operating room is provided corresponding to the hot straightening machine, the cooling bed, the inspection platform, the ultrasonic flaw detection, and the cutting head shear; and one operating room is provided corresponding to the double-side shearing Room; Corresponding to the cut-to-length shears, the check point, the pre-stacker is provided with an operating room.
  8. 如权利要求1或2或6所述的高效的双机架双剪切线直通中厚板生产线，其特征在于，所述1#冷床、所述1#检查台架延伸至第三厂房跨。The high-efficiency double-frame double-cutting line as claimed in claim 1 or 2 or 6 is a straight-through medium and heavy plate production line, wherein the 1# cooling bed and the 1# inspection bench extend to the third plant span .
  9. 一种高效的双机架双剪切线直通中厚板生产线生产中厚板的方法，其特征在于，所述方法采用如权利要求1～8中任何一项所述的高效的双机架双剪切线直通中厚板生产线，所述方法包括如下步骤：An efficient method for producing medium and heavy plates through a double-frame double shear line through a medium-thick plate production line, which is characterized in that the method adopts the efficient double-frame and double-frame plates according to any one of claims 1-8. The cutting line is directly connected to the plate production line, and the method includes the following steps:
    1)连铸板坯通过连铸辊道直接在线以最高的温度送至加热炉前加热炉辊道，进行去毛刺、称重；1) The continuous casting slab is directly sent online through the continuous casting roller table to the heating furnace roller table in front of the heating furnace at the highest temperature for deburring and weighing;
    2)连铸板坯称重后根据装炉计划装入一个加热炉进行加热；2) After the continuous casting slab is weighed, it is loaded into a heating furnace for heating according to the furnace loading plan;
    3)连铸板坯加热至目标温度后，出钢进入主轧线轧钢输送辊道，首先经过高压水除磷设备进行表面处理，将连铸板坯表面的氧化铁皮除去；3) After the continuous casting slab is heated to the target temperature, the tapping enters the main rolling line's steel conveying roller table, and first passes through the high-pressure water dephosphorization equipment for surface treatment to remove the oxide scale on the surface of the continuous casting slab;
    4)高压水除磷后的连铸板坯到达定宽压力机进行在线宽度调整，达到立辊轧机前所需要的宽度；随后连铸板坯到达立辊，通过立辊对连铸板坯的平面形状、头部形状、尾部形状、边部形状进行调整，以便于后续得到良好的钢板宽度尺寸精度；4) The continuous casting slab after dephosphorization by high-pressure water reaches the fixed width press for online width adjustment to reach the required width before the vertical roll mill; then the continuous casting slab reaches the vertical roller, and the continuous casting slab is transferred by the vertical roller to the continuous casting slab. The plane shape, head shape, tail shape, and edge shape are adjusted to facilitate the subsequent acquisition of good steel plate width dimensional accuracy;
    5)出立辊轧机的连铸板坯至四辊粗轧机进行中间坯的轧制，将连铸板坯轧到设定的厚度和宽度，在应急情况下还可以单机架轧制成品；钢板不进行展宽轧制；5) The continuous casting slab from the vertical rolling mill is transferred to the four-high roughing mill for the rolling of the intermediate slab, and the continuous casting slab is rolled to the set thickness and width. In an emergency, the finished product can also be rolled in a single stand; No widening rolling is carried out;
    6)粗轧后的板坯到达四辊精轧机后，根据设定的道次数、咬钢速度、压下量参数，将板坯轧成要求的的钢板宽度和厚度，并得到良好的板形和同板差，同时实现不同控温要求钢板的终轧温度；6) After the rough-rolled slab reaches the four-high finishing mill, the slab is rolled to the required steel plate width and thickness according to the set number of passes, steel biting speed, and reduction parameters, and a good plate shape is obtained Different from the same plate, and realize the final rolling temperature of the steel plate with different temperature control requirements at the same time;
    7)钢板完成成品轧制以后将根据是否有控冷要求通过ACC加速冷却装置，若有冷却要求，则按照模型设定的冷却速度、流量、通过速度等参数进行在线冷却，以达到目标终冷温度，从而提升钢板的力学性能；对于无控冷要求的钢板则直接空过ACC加速冷却装置；7) After the steel plate is finished rolling, it will pass the ACC accelerated cooling device according to whether there is a controlled cooling requirement. If there is a cooling requirement, it will be cooled on-line according to the cooling speed, flow rate, passing speed and other parameters set by the model to achieve the target final cooling Temperature, so as to improve the mechanical properties of the steel plate; for steel plates without controlled cooling requirements, directly pass the ACC accelerated cooling device;
    8)钢板经过冷却装置之后以一个道次的矫直工艺经过热矫直机，以改善钢板板形；若轧制板形较差，也可增加矫直道次；8) After the steel plate passes through the cooling device, it passes through a hot straightening machine with one pass of straightening process to improve the shape of the steel plate; if the rolled plate shape is poor, the straightening pass can also be increased;
    9)热矫直出来之后钢板在1#标记装置处进行中间过程标记，以便于钢板中间过程追溯；9) After hot straightening, the steel plate is marked in the middle process at the 1# marking device to facilitate the traceability of the middle process of the steel plate;
    10)标记好的钢板钢板轧在热分段剪处进行分段，以便满足上冷床的最大长度要求；分段后，钢板可根据物流情况选择不同的冷床进行冷却；对于需要直通的钢板也可不上冷床，直接从输送辊道进入剪切线的剪切辊道；10) The marked steel plate is rolled into sections at the hot section shear to meet the maximum length requirements of the upper cooling bed; after sectioning, the steel plate can be cooled by different cooling beds according to the logistics situation; for the steel plate that needs to pass through It is also possible to directly enter the shearing roller table of the shearing line from the conveying roller table without using the cooling bed;
    11)钢板冷却结束后进入两个检查台架中的一个进行检查以及运输至剪切线的剪切辊道；11) After the steel plate is cooled, enter one of the two inspection stands for inspection and transport to the shearing roller table of the shearing line;
    12)钢板经过检查台架后，温度降至80℃以下，进入探伤装置根据不同的探伤要求进行探伤操作，不需要探伤的钢板直接空过该探伤装置；12) After the steel plate passes through the inspection platform, the temperature drops below 80℃, and enters the flaw detection device to perform flaw detection operations according to different flaw detection requirements. The steel plate that does not need flaw detection directly passes through the flaw detection device;
    13)钢板探伤完成后进入切头剪进行切头尾，切除头部的“舌形”部分，并对长度大于30m进行分段，分段长度根据辊道长度进行调整；以上的钢板进行分段，为后面的边部剪切做好准备；若钢板的尾部形状不良，则必须进行切尾处理；13) After the steel plate flaw detection is completed, enter the cutting shears to cut the head and tail, cut off the "tongue-shaped" part of the head, and segment the length greater than 30m. The segment length is adjusted according to the length of the roller table; the above steel plates are segmented , To prepare for the rear edge cutting; if the shape of the tail of the steel plate is not good, it must be trimmed;
    14)钢板切完头尾后进入双边剪，用于切除钢板两侧的毛边，双边剪的移动剪根据所剪的成品宽度预先调定位置；14) After cutting the head and tail of the steel plate, it enters the bilateral shears, which is used to cut the burrs on both sides of the steel plate. The mobile shear of the bilateral shears presets the position according to the width of the finished product to be cut;
    15)双边剪切完成后，钢板在标记装置进行试样喷印，若钢板没有试样，则空过标记装置；15) After the bilateral shearing is completed, the steel plate is sprayed with the sample in the marking device. If the steel plate has no sample, the marking device will be blanked;
    16)钢板经过标记装置后，进入定尺剪，定尺剪将钢板剪切成最终合同所要求的长度；同时对有取样钢板要的进行取样，取完的大样送试样剪进行下一步加工和性能测试；16) After the steel plate passes through the marking device, it enters the cut-to-length shear, and the cut-to-length shear cuts the steel plate to the length required by the final contract; at the same time, sample the steel plate that needs to be sampled, and send the large sample to the sample shear for the next step Processing and performance testing;
    17)钢板成品切割完毕后进入喷印机进行成品喷印，将合同信息、钢种、船级社标志、探伤要求信息喷印在钢板上；如果钢板板形不好则只喷印板号，后续同过横移台架转冷矫喷印；若需要翻板则横移至翻板机进行翻板检查；17) After the finished steel plate is cut, enter the printer to print the finished product, and print the contract information, steel grade, classification society logo, and flaw detection requirement information on the steel plate; if the steel plate is not well shaped, only the plate number will be printed. Follow up with the traverse platform to cold-straightening printing; if it needs to turn the plate, move it horizontally to the plate turning machine for turning plate inspection;
    18)钢板喷印结束后进入产品最终检查点进行检查，若经过检查钢板没有问题 直接经过预堆垛机后通过辊道入库堆放；若钢板板形有问题，则经过横移台架分别进入冷矫直机进行板形矫正，矫完之后在标记装置进行标记；标记完成之后通过输送辊道进入成品库，并根据堆垛要求分别经成品收集台架进入成品库垛位堆放，等待出厂。18) After the steel plate printing is finished, enter the final inspection point of the product for inspection. If the steel plate has no problem after the inspection, the steel plate is directly stacked through the pre-stacker and then stacked through the roller table; if the plate shape of the steel plate has a problem, it enters through the traverse platform. The cold straightening machine performs plate shape correction, and after the correction is completed, the marking device is marked; after the marking is completed, it enters the finished product warehouse through the conveyor roller, and enters the finished product warehouse stacking position through the finished product collection platform according to the stacking requirements, waiting for delivery.
  10. 如权利要求9所述的高效的双机架双剪切线直通中厚板生产线生产中厚板的方法，其特征在于，步骤5)后，如对板坯有控温精轧要求的，在粗轧后通过中间冷却装置进行喷水冷却，可根据冷却模型计算的流量、速度参数实现不同要求的板坯控温功能；部分无控温要求的板坯则直接空过中间冷却装置。The high-efficiency double-stand double-shearing line for producing medium-thick plates through the medium-thick plate production line according to claim 9, characterized in that, after step 5), if the slab has a temperature-controlled finish rolling requirement, the After rough rolling, the intercooling device is used for water spray cooling, which can realize the slab temperature control function of different requirements according to the flow and speed parameters calculated by the cooling model; some slabs without temperature control requirements are directly passed through the intercooling device.
PCT/CN2020/118929 2019-09-30 2020-09-29 High-efficiency double-frame double-cutting line feed-through intermediate thickness slab production line and production method WO2021063364A1 (en)

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