CN107855364A - A kind of tandem mill stay-warm case system and method - Google Patents
A kind of tandem mill stay-warm case system and method Download PDFInfo
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- CN107855364A CN107855364A CN201711240654.1A CN201711240654A CN107855364A CN 107855364 A CN107855364 A CN 107855364A CN 201711240654 A CN201711240654 A CN 201711240654A CN 107855364 A CN107855364 A CN 107855364A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 82
- 238000009413 insulation Methods 0.000 claims abstract description 28
- 230000002787 reinforcement Effects 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 7
- 239000011819 refractory material Substances 0.000 claims description 4
- 230000009970 fire resistant effect Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 22
- 239000010959 steel Substances 0.000 description 22
- 239000007789 gas Substances 0.000 description 8
- 238000003801 milling Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005098 hot rolling Methods 0.000 description 5
- 239000004484 Briquette Substances 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005088 metallography Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- 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
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
Abstract
The invention provides a kind of tandem mill stay-warm case system and method suitable for the insulation of slab gas flame cuttiug section, significant heat insulation effect can not only be reached by the system, and slab caused oxidization burning loss defect due to temperature damage in transportation can be significantly reduced, improve product quality.Including：Cutting dolly and stay-warm case；The Cutting dolly is located on the track of gas flame cuttiug section slab conveyer belt both sides, and the stay-warm case is fixedly connected with the Cutting dolly by connecting shaft and covered on directly over the slab conveyer belt, with Cutting dolly synchronizing moving in the same direction.
Description
Technical field
The present invention relates to continuous casting continuous rolling equipment field, and in particular to a kind of tandem mill stay-warm case system and method.
Background technology
Tandem mill uses bloom or continuous casting billet as raw material, the advantages of due to continuous casting billet, physical and chemical performance ratio in addition
Bloom is uniform, and is easy to increase base weight, therefore gradually the proportion of increase continuous casting billet, indivedual factories have reached 100% in recent years.Strip connects
Milling train slab thickness is generally 150-300mm, and length is generally 9-12m, and slab weight directly determines unit volume weight, modernized
Milling train on, unit volume weight has reached 20-30 tons/rice.The yield and recovery rate of milling train can be significantly improved by increasing heavy-weight coil, but
Plant equipment must be increased, increases frame quantity and support spacing.The currently used advanced technology bag of China's hot-continuous-rolling strip steel
The direct hot charging (DHCR) and Direct Rolling (HDR) of strand are included, realizes the serialization of two inter processes, there is energy-conservation, save and throw
Money, shorten the series of advantages such as delivery date, significant effect.The technical requirements are made steel and conticaster steady production zero defect slab.
But caused temperature drop can lack in steel slab surface generation compared with multimass during milling train is delivered to due to hot base
Fall into, and the oxide skin generated can also influence slab quality, and also needing to elimination steel slab surface before slab enters milling train heating lacks
Fall into, hot scarfing machine is set up on some slabbing mills general steel grade slab is made an overall screening.It is higher to quality requirement
Slab also need to carry out the local cleaning that repairs a die, with removing it is deeper the defects of.This not only adds strip production time and cost, together
When also influence product quality.
Therefore, in order to avoid slab temperature drop and head and tail temperature difference are excessive, the method for improving mill speed is taken to subtract mostly at present
Few temperature drop, at the same time also increases the power of main motor, and electric power energy consumption is more.Or some takes hot rolling workshop best
It is directly connected to conticaster, to shorten the method for delivery time, the method is feasible, but many of practical layout still be present and ask
Topic.Or the method used mostly at present also adds stay-warm case on rollgang and sets holding pit in slab storehouse, to protect
Board briquette is demonstrate,proved, or long stroke charger is used in rolling mill heating furnace, can be by high temperature when being exchanged in order to cold base with hot base
Base loads depths in stove, shortens the heat time.Two frames use roll axial motion technology after heating furnace uses essence casting machine, to increase
Add same width belt steel rolling amount.
But practice is found, current a variety of Insulations, act on and be not up to pre- for the oxidative phenomena of steel slab surface
Phase, that is to say, that actual measurement finds that the oxidization burning loss of steel slab surface is still serious, moreover, the cooling of strand corner is very fast, causes coiled sheet
Edge it is second-rate.And further solving temperature damage of the slab during transport turns into this area urgent problem to be solved.
Chinese invention patent CN203343179U, disclose a kind of Continuous mill train and cross steel rider road attemperator, concrete scheme
It is that bearing is installed with base, one end connects bearing of oil cylinder, other end connection rocking bar, rocking bar is fixed with stay-warm case to be connected
Connect, stay-warm case is in door frame shaped, and its inframe is equipped with felt insulation, and two frame pin of stay-warm case fell within the roller-way edge of table of steel rider road both sides
On.
Although above-mentioned patent is with certain heat insulation effect, its structure is relative complex, and equipment is actually using
In to device structure require it is higher, easily junction break down.Progress flame is needed to cut particularly with the slab of fresh baked
Cutting section can not be incubated using it.
The content of the invention
It is an object of the present invention to provide a kind of tandem mill stay-warm case suitable for the insulation of slab gas flame cuttiug section
System, significant heat insulation effect can not only be reached by the system, and can significantly reduce slab in transportation by
Damaged and caused oxidization burning loss defect in temperature, improve product quality.
Another object of the present invention is to provide for the method being incubated using the tandem mill with insulation cover system.
In order to achieve the above object, concrete technical scheme of the invention is as follows：
A kind of tandem mill insulation cover system, including：Cutting dolly and stay-warm case；
The Cutting dolly is located on the track of gas flame cuttiug section slab conveyer belt both sides, and the stay-warm case passes through connecting shaft
It is fixedly connected and is covered on directly over the slab conveyer belt with the Cutting dolly, with Cutting dolly synchronizing moving in the same direction.
Further, the cross section of the stay-warm case is door frame shaped structure, and its perisporium is double-decker, including case, resistance to
Fiery heat-insulation layer and positioning bar, the both ends of the case are provided with extension along perpendicular to horizontal plane direction, and the positioning bar is described in
The length direction of case sets and is wrapped in the refractory insulating layer, and its both ends is separately fixed on the extension will be described resistance to
Fiery heat-insulation layer is fixed on the encloser inner wall.
Further, the refractory insulating layer is made up of the refractory material of more than 1800 DEG C of refractory temperature.
Further, in addition to support beam；
The support beam body is fixed on the insulation cover outer wall in door frame shaped, and its both ends is provided with promptly falling for hook-shaped
Hook, the promptly overhead kick is buckled in the bottom of the case two side；
The connecting shaft comprises at least two, and its one end is fixedly connected with the Cutting dolly, and its other end is fixed respectively
In the support beam of the stay-warm case both sides.
Further, the top of the stay-warm case is provided with what is set respectively along the length direction and width of its body
Reinforcement, its bottom are provided with the roller of orbiting, and the wheel of the roller and the Cutting dolly is set with rail.
Further, the width of the stay-warm case is equal with slab conveyor width, and its length is the 1/2- of slab length
3/5。
Further, the Cutting dolly includes support frame and cutting part；
The cutting part is located on support frame as described above, and support frame as described above is connected by the connecting shaft with the stay-warm case；
The cutting part is provided with the cutting knife of the edge of a knife vertically downward, and the cylinder of the driving cutting knife motion, the cylinder
It is connected with external motor.
The method provided by the invention being incubated using above-mentioned tandem mill with insulation cover system to gas flame cuttiug section slab,
Comprise the following steps；
A. the slab come out of the stove of casting reaches conveyer belt, by extending forward below the Cutting dolly and stay-warm case, when
After reaching preset length, start and cutting synchronized to slab positioned at the Cutting dolly of fire door, meanwhile, the stay-warm case with
With synchronizing moving together；
B. cutting finishes, and withdraws cutting knife, the Cutting dolly in tow the stay-warm case inverted running to initial position；
C. during slab is persistently cast, step a and b are repeated.
A kind of tandem mill stay-warm case system and method provided by the invention, by the slab finished of just casting in flame
Cut length is incubated, and is effectively reduced the temperature damage during slab initial launch in tandem mill, is reduced slab in transportation
In caused oxidization burning loss defect, improve product quality.
Brief description of the drawings
Fig. 1 is a kind of tandem mill stay-warm case system structure diagram provided by the invention；
The front view of Fig. 2 bitmaps 1；
1. Cutting dolly, 2. stay-warm cases, 3. connecting shafts, 4. support beams, 5. reinforcements, 6. rollers, 7. tracks.
Embodiment
As depicted in figs. 1 and 2, the tandem mill insulation cover system of an embodiment of the invention, the heat-insulation system are specific
Applied to the gas flame cuttiug section in hot-continuous-rolling strip steel production process.Because the board briquette of fresh baked reaches more than 800 DEG C, it is necessary to
Cut by the Cutting dolly 1 of automatic running, and Cutting dolly 1 can be past back and forth on the conveying track 7 of slab conveyer belt
It is multiple, so wanting to be incubated for this section of slab, the fixation holding mode of other delivery sections can not be taken, so, for a long time with
Effective Insulation can not be carried out to the section.
The system of tandem mill stay-warm case 2 in one embodiment of the present invention, solves the problem well.Gas flame cuttiug is used
Cutting dolly 1 on stay-warm case 2 is set, while stay-warm case 2 is run simultaneously in company with Cutting dolly 1.Passed when the slab come out of the stove enters
After sending band, now the cutting knife of Cutting dolly 1 is retracted state, and the body of stay-warm case 2 is vacantly set, and slab passes through the He of Cutting dolly 1
Stay-warm case 2 enters conveyer belt, after the slab for entering conveyer belt reaches preset length, starts Cutting dolly 1 and carries out slab cutting,
Now, cutting, Cutting dolly 1 are synchronously carried out together with the operation of stay-warm case 2.Because cutting knife can not be cut slab in a flash
Disconnected, it is therefore desirable to which Cutting dolly 1 runs a period of time in company with slab together, thoroughly after cut-out, cutting knife is withdrawn, Cutting dolly 1
Complete cutting.
And in this process, in order to be incubated to the slab of gas flame cuttiug section, set Cutting dolly 1 solid with stay-warm case 2
Fixed connection, stay-warm case 2 are vacantly looked on a moving belt just, and stay-warm case 2 is moved, realized in the same of cutting together in company with Cutting dolly 1
When reach to slab insulation effect.
In one embodiment of the present invention method, it is door frame shaped structure to set the cross section of stay-warm case 2, so can be in slab bag
Include and slab is incubated in the certain space above it, slab is simultaneously covered on it by one cover equivalent to the slab cover
It is interior, when slab is run on a moving belt, the form in tunnel is crossed similar to train.
Because the board briquette of fresh baked reaches more than 800 DEG C, so, the inwall of stay-warm case 2 is necessary while insulation
Using refractory material, the refractory material is according to the limitations of the process conditions, it is necessary to resistance to more than 1800 DEG C using refractory temperature
Fiery material, such as ceramic fiber blanket, or the unsetting fire proofed wood that can be sprayed can also use, and be sprayed on stay-warm case 2
On the inwall of case.Unshape refractory meets refractory temperature can be used in 1800 DEG C of conditions above.Stay-warm case 2
Shell, that is, case can be made of common ferrous materials, such as common carbon steel, naturally it is also possible to
Using other heat-insulating materials or high-temperature steel iron material, when making case using carbon steel, its thickness at least should
Reaching 3.25mm can reach to its intensity requirement.
When wherein using ceramic fiber blanket as refractory insulating layer, its thickness is 200mm, and service life is usually 2 years, will
Full wafer fibrofelt is located on encloser inner wall, and the length direction of fibrofelt interior edge stay-warm case 2 runs through positioning bar again afterwards, in stay-warm case
In the case of 2 normal settings, the both ends of case are vertically provided with extension, and the both ends of positioning bar are close to encloser inner wall and fixed
On extension, ceramic fiber blanket can be thus fastened on encloser inner wall, while reinforcement 5 can also be protected.
Directly welding when the both ends of reinforcement 5 are fixed on extension, naturally it is also possible to take other effective measures to be fixed.
In an embodiment of the invention, when stay-warm case 2 and Cutting dolly 1 connect, directly connecting shaft 3 is fixed on
When in the side wall outside stay-warm case 2, fastening performance is not good enough, so, support beam 4, the support beam can be set outside stay-warm case 2
The setting of 4 bodies is consistent with the shape of cross section of stay-warm case 2, is fixed on the outer wall of stay-warm case 2, and its both ends is provided with grabbing for hook-shaped
Tight overhead kick, should overhead kick be promptly hook-shaped, its end is provided with barb, and the bottom that promptly overhead kick is buckled in case two side passes through
Barb can be fastened setting.The support beam 4 usually requires that to be set using bar reinforcement, is had a diameter larger than or equal to more than 8mm
It is advisable.
Connecting shaft 3 can be now separately fixed in the support beam 4 of the both sides of stay-warm case 2, can be 3 in connecting shaft
Positioning hole is set on support beam 4, and connecting shaft 3 inserts the positioning hole, and is internally welded with it, improves connection tightness.
In an embodiment of the invention, during gas flame cuttiug, the length for cutting slab is arranged to 10m, now, due to also
Include the range ability of Cutting dolly 1, so, stay-warm case 2 can not set equal length, and still, now stay-warm case 2 can be set
To 5-6m length, in long-term hot environment, in order to prevent from stay-warm case 2 from deforming upon or even cave in use, preferably
Reinforcement 5 can be set at the top of stay-warm case 2, the reinforcement 5 can be segmented horizontal setting, can also be along the length of stay-warm case 2
Direction is set, or the two is staggered, and gives one, 2 both ends of stay-warm case upward pulling force, prevents the temperature distortion both ends of stay-warm case 2
Sagging cave in can not use.
In an embodiment of the invention, in order to reduce the stress of connecting shaft 3, the security of stay-warm case 2 is improved, preferably
Roller 6 can be set in the bottom of stay-warm case 2, and the wheel of the roller 6 and Cutting dolly 1 is set with rail, in company with the car of Cutting dolly 1
Take turns synchronous axial system.
In an embodiment of the invention, Cutting dolly 1 is on hot-continuous-rolling strip steel production line, and gas flame cuttiug section is conventional
One equipment, in this programme, including support frame and the cutting part that is located on support frame, cutting knife are located on cutting part, support frame master
It is used to set connecting shaft 3 to fix stay-warm case 2.The cylinder that cutting knife is controlled by external motor controls it to cut downwards or upwards
Reset.
When use is incubated in the system of stay-warm case 2, first the Cutting dolly 1 set and the entirety of stay-warm case 2 are stopped in advance
Only in slab conveyer belt one end, fire door position is particularly located at, the cutting part of Cutting dolly 1 is in fire door, after stay-warm case 2 is located at
Side.After the length that the slab come out of the stove is reached on conveyer belt of casting reaches preset length, electric motor starting, cylinder starts Cutting dolly 1
Start to cut, meanwhile, Cutting dolly 1 is in company with slab synchronizing moving, and now, in motion process, stay-warm case 2 is located at motion front-end,
Cutting dolly 1 is at rear, and after Cutting dolly 1 cuts off slab, cylinder control cutting knife is withdrawn upwards, and Cutting dolly 1 stops
Only cut, stay-warm case 2 moves in company with stopping together.And it is subsequent, starting Cutting dolly 1 moves backward, and stay-warm case 2 one starts shipment in tow
Go to fire door position, after the length for slab arrival conveyer belt of coming out of the stove is preset length, Cutting dolly 1 is cut again,
Stay-warm case 2 is together with slab synchronizing moving in tow.
Measured in actual production experiment, the mean temperature of the slab of casting when coming out of the stove is 850 DEG C, generally operation to heat
When hot rolling is carried out in milling train, its temperature can be reduced to 770 DEG C, and use tandem mill provided by the invention stay-warm case 2 in the section
After system, it reaches the temperature of hot-rolling mill and improves at least 30 DEG C, minimum to reach 800 DEG C, while reduces and heating
The soaking time of stove more than 10 minutes, reducing the use of fuel while also less oxidization burning loss, strand corner temperature is uniform,
Improve slab flanging part quality.For economic benefit angle, heating furnace one hour can less fuel consumption reach 500
Jin.
Because the board briquette just come out of the stove from casting equipment reaches 850 DEG C, easily reacted with the oxygen in air,
Its Surface Creation oxide skin, meanwhile, slab corner location cooling rate faster, causes, after slab reaches milling train, corner temperature
Less than 500 DEG C have been cooled to, now, the temperature difference between slab body is larger, if soaking is ineffective before hot rolling,
Corner rapid cooling defect is easily produced, causes the steel plate corner hardness that is rolled into larger, easily produces crimping warping phenomenon.
And after using the progress Insulation of stay-warm case 2, slab corner temperature and body temperature are basic after arrival milling train
Unanimously, the generation of corner rapid cooling defect is effectively prevent, improves rolled plate quality.Its material of the hot rolled steel plate of production is equal
Even, flanging is not present in steel plate edge, and shape wave and turriform defect significantly reduce.
The nominal thickness of sample steel plate is 2-2.5mm, and its yield strength is 240-250Mpa, tensile strength 310-
320Mpa, elongation A50mm are 42%, 180 degree bend test D=0a.Survey the tensile strength and steel plate sheet of steel plate corner
The tensile strength of body is consistent.
L0=50mm is used in tension test, b=25mm sample, bend test sampling plan is according to the 3 of JIS Z2204
Number sample is carried out, and test method is carried out according to JIS Z 2248, and hardness test performs according to JIS Z 2245 regulation.
By metallography microscope sem observation, the metallic phase image of corner location is consistent with the metallic phase image of steel plate center.
Embodiment 1：
New golden steel mill use 2 120 tons of converters, 2 double-current slab casters, produce high-carbon Q235B, low-carbon Q235B,
The steel billet product and 700mm to 1250mm of more than ten of kind such as Q195, Q195L, Q215B, Q345B, SPHC, 330CL, S245 are near
Individual specification slab more than 30, cast slab is to hot rolling air line distance about 60m, within every slab delivery time 3min, ejection temperature
850 DEG C of degree, after stay-warm case, it is 800 DEG C to reach rolling mill temperature, and the heating furnace heat time is average 150 minutes.
More than, although the description of several embodiments of the invention, but these embodiments are intended only as example proposition
, it is not intended to limit the scope of the present invention.For these new embodiments, can be implemented in a manner of other are various,
In the range of idea of the invention is not departed from, various omissions, displacement and change can be carried out.These embodiments and its change
Shape, the invention being also contained in described in claims while being contained in scope and spirit of the present invention and its impartial model
In enclosing.
Claims (8)
- A kind of 1. tandem mill insulation cover system, it is characterised in that including：Cutting dolly and stay-warm case；The Cutting dolly is located on the track of gas flame cuttiug section slab conveyer belt both sides, and the stay-warm case passes through connecting shaft and institute State Cutting dolly to be fixedly connected and cover on directly over the slab conveyer belt, with Cutting dolly synchronizing moving in the same direction.
- A kind of 2. tandem mill according to claim 1 insulation cover system, it is characterised in that the cross section of the stay-warm case For door frame shaped structure, its perisporium is double-decker, including case, refractory insulating layer and positioning bar, and the both ends of the case are along hanging down Extension directly is provided with horizontal plane direction, length direction of the positioning bar along the case, which is set, is wrapped in the fire resistant heat preserving In layer, its both ends is separately fixed on the extension and the refractory insulating layer is fixed on the encloser inner wall.
- 3. a kind of tandem mill according to claim 2 insulation cover system, it is characterised in that the refractory insulating layer is by resistance to The refractory material that more than 1800 DEG C of fiery temperature is made.
- 4. a kind of tandem mill according to claim 2 insulation cover system, it is characterised in that also including support beam；The support beam body is fixed on the insulation cover outer wall in door frame shaped, and its both ends is provided with the promptly overhead kick of hook-shaped, The promptly overhead kick is buckled in the bottom of the case two side；The connecting shaft comprises at least two, and its one end is fixedly connected with the Cutting dolly, and its other end is separately fixed at institute State in the support beam of stay-warm case both sides.
- 5. a kind of tandem mill according to claim 2 insulation cover system, it is characterised in that set at the top of the stay-warm case There is the reinforcement that length direction and width along its body are set respectively, its bottom is provided with the roller of orbiting, The wheel of the roller and the Cutting dolly is set with rail.
- A kind of 6. tandem mill according to claim 2 insulation cover system, it is characterised in that the width of the stay-warm case with Slab conveyor width is equal, and its length is the 1/2-3/5 of slab length.
- 7. a kind of tandem mill insulation cover system according to claim any one of 1-6, it is characterised in that the cutting is small Car includes support frame and cutting part；The cutting part is located on support frame as described above, and support frame as described above is connected by the connecting shaft with the stay-warm case；The cutting part is provided with the cutting knife of the edge of a knife vertically downward, and the cylinder of the driving cutting knife motion, the cylinder with it is outer Portion's motor connection.
- 8. the method being incubated using a kind of tandem mill according to claim 1 with insulation cover system, it is characterised in that Comprise the following steps；A. the slab come out of the stove of casting reaches conveyer belt by extending forward below the Cutting dolly and stay-warm case, pre- when reaching If after length, the Cutting dolly started positioned at fire door synchronizes cutting to slab, meanwhile, the stay-warm case is in company with together Synchronizing moving；B. cutting finishes, and withdraws cutting knife, the Cutting dolly in tow the stay-warm case inverted running to initial position；C. during slab is persistently cast, step a and b are repeated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711240654.1A CN107855364A (en) | 2017-11-30 | 2017-11-30 | A kind of tandem mill stay-warm case system and method |
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| CN201711240654.1A CN107855364A (en) | 2017-11-30 | 2017-11-30 | A kind of tandem mill stay-warm case system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112207128A (en) * | 2019-07-12 | 2021-01-12 | 常州新武轨道交通新材料有限公司 | Steel rolling processing technology |
| CN113828644A (en) * | 2021-09-18 | 2021-12-24 | 广东韶钢松山股份有限公司 | Dispatching method for hot-conveying steel billets |
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| CN2803549Y (en) * | 2005-04-05 | 2006-08-09 | 鞍山市润辉冶金设备制造有限公司 | Thermal insulation cover on transferring roller way of continuous casting and rolling set for hot rolled strips |
| CN101862877A (en) * | 2010-06-02 | 2010-10-20 | 何学才 | Flame cutting system with insulation device for flame cutting zone of billet |
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