CN105965212A - Manufacturing technological method for manufacturing tee joint through double-metal compound steel plate - Google Patents
Manufacturing technological method for manufacturing tee joint through double-metal compound steel plate Download PDFInfo
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- CN105965212A CN105965212A CN201610471554.9A CN201610471554A CN105965212A CN 105965212 A CN105965212 A CN 105965212A CN 201610471554 A CN201610471554 A CN 201610471554A CN 105965212 A CN105965212 A CN 105965212A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a manufacturing technological method for manufacturing a tee joint through a double-metal compound steel plate. The manufacturing technological method comprises the technological steps of purchase and rechecking of raw materials; welding thermal treatment simulated experiment, and product technology presetting; blanking and steel tube prefabrication; rolled tube welding; compression molding; thermal treatment; treatment of inner and outer surfaces; nondestructive inspection; groove processing; pickling and passivating treatment; and finished product detection.
Description
Technical field
The present invention relates to produce metal tube, the process of metal tube and tubing technical field, particularly a kind of bimetallic clad steel plate threeway method of manufacturing technology by the mode of rolling.
Background technology
Before carrying out dual-metal clad steel pipe part (pipe line steel+N08825) trial-production at home, external pipe fitting manufacturing enterprise has produced composite pipe product, and in Turkmenistan natural gas line conveying engineering one phase project, apply, but the nickel base alloy layer of external product uses bead-welding technology, from technical standpoint, there is difficulty, and expensive, delivery cycle is longer, so in the second stage of the project oil base oneself upon support the domestic trial-production having the Ji Jia supplier of mature experience and good achievement to carry out new product at conventional oil and gas pipes.
Summary of the invention
It is an object of the invention to provide a kind of stable mechanical performance, the bimetallic clad steel plate threeway method of manufacturing technology that efficiency is high.
This technique is by studying three universal steel plate component analyses, performance evaluation after three-way welding technique and threeway heat treatment, determine wlding choose, welding condition and Technology for Heating Processing, after making shaping and heat treatment, mechanical performance and the metallographic structure of threeway meet standard-required.
Choose suitable wlding and reasonable welding procedure；
Take the Technology for Heating Processing of repeated hardening.
Threeway manufacture main technological steps (see Fig. 1):
(1) raw-material buying, reinspection:
Buying belongs to metallurgical compound Explosion composite steel plate (high-strength steel+Nickel-Based Steel), and the material of buying is carried out chemistry one-tenth
Divide, mechanical performance, adhesive strength, corrosion resistance etc. are checked and test, carry out ultrasound examination one by one simultaneously, detect
Whether base material exists internal flaw and whether faying face has peeling.
(2) sweating heat processes simulation experiment, Product Process makes a reservation for
Through rechecking the test plate (panel) extracting three pieces of 300mm*600mm in qualified sheet stock, output the groove of X-type at the centre plasma that plate is wide along long side direction, and groove is polished the heat affected area of metallic luster removal cutting, these three pieces of test plate (panel)s are welded into test piece for welding according to welding manner N06625 welding wire and the CHE607GX welding rod of the welding procedure analog roll sealing of tube of assessment of conformity, test piece for welding is after Non-Destructive Testing is qualified, determine the common heat treatment temperature parameter area being suitable for of bi-material, in this range, preferably go out most suitably used concrete heating and heat treatment parameter；
(3) blanking, steel pipe prefabricated
According to product and technological requirement, by art work sheet setting-out on steel plate, cutting stock, select numerical control cutting machine cutting；Design specialized cutting produces district, it is ensured that material blanking accurate；
(4) pipe crimping welding
According to technological requirement, steel plate is rolled into drum by veneer reeling machine, and pipe longitudinal joint is welded, form, after the circle of school, the blank manufacturing threeway；nullBefore roll bending，Fibre board on clad surface bedding，Avoid that coiling process occurring, coating metal scratches to contact with carbon steel tooling device with coating，Ensure to hold successfully after X-type groove staggered edge free and straight flange phenomenon at boil on the nape opposite the mouth，After the method ground with machinery in groove is removed the heat affected area of thermal cutting，With rustless steel wire wheel by clean for the polishing of each in groove and both sides 50mm inner surface，According to the welding procedure of the assessment of conformity basic unit to pipe、Transition zone、Coating successively welds，Basic unit is monitored at any time during welding、Transition zone、Coating throat thickness，Reach standard-required，The strictest heat input controlling welding and interlayer temperature，And the degree of gas shield and the cleanliness factor of successively back chipping，Ensure that welding bead quality reaches highest standard，Avoid there is pore、Slag inclusion lacks，Source of corrosion is caused to pipe fitting，The most both ensure that deposited metal possessed good mechanical property，Improve again its erosion-resisting ability；
(5) compressing
nullHeat within the three-way pipe billet that Non-Destructive Testing is qualified loads gas heating furnace after welding job is completed，Carry out compression molding on a hydraulic press，Its overall process operation is: flattens three bulge perforate redraing arm supervisor school circles of fourth contact and goes to hold round mouth，In pressing process, the first pipe to be ensured presses predetermined heating schedule heating，Control programming rate≤200 DEG C/h，It is warming up to 950 DEG C ± 10 DEG C and is incubated compacting of coming out of the stove for 30 ± 10min minute，The strict immersion amount controlling base pipe weld seam side body during bulge，Ensure that immersion line flushes with the tyre bead of the placenta going out arm，And strictly monitor whole under press through journey，Control threeway sidewall and do not allow that some indent phenomenons occur，Avoid coating metal that fold occurs，In forming process，High temperature resistant Pulvis Talci is all coated with all moulds of industrial equipment surfaces of coating contacts，Both lubrication can have been played，When can avoid again pipe fitting high temperature, coating contacts with carbon steel moulds of industrial equipment，Pipe must be placed on outside stove after every time compacting or drawing and reenter stove when the temperature until pipe is down to below AC1 and carry out post bake，Thus avoid the variant part bit length phase to be in lower change point temperatures above continuously and cause metal grain degree superheating phenomenon such as thick grade to occur，Due good organization state before product had not only had the round and smooth presentation quality of standard but also had heat treatment is controlled by process above，Three-way forming、Remove end、After the circle of school, its key dimension is measured；
(6) heat treatment
Tempering heat treatment process is added according to quenching, during quenching, charging temperature≤300 DEG C, programming rate controls at≤200 DEG C/h, is warming up to insulation when 940 DEG C～960 DEG C, temperature retention time controls 30～45min, cooling down in pure water, charging temperature≤300 DEG C during tempering, programming rate controls at≤200 DEG C/h, being warming up to insulation when 520 DEG C～560 DEG C, temperature retention time controls to cool down in atmosphere 40～60min；
(7) inner and outer surfaces processes
Threeway surfaces externally and internally is carried out reconditioning process；Process grade and reach Sa3.2 level；
(8) nondestructive inspection
Threeway body is carried out penetrant inspection and ultrasonic inspection；Butt welded seam carries out radiographic inspection and ultrasonic inspection；
(9) groove
Threeway pipe end is machined out groove, it is ensured that coating inner diameter deviation ＜ 0.5mm, coating wall thickness deviation+2mmm/-0.5mm.
(10) acid wash passivation processes
Utilize acid wash passivation liquid that threeway inwall carries out brushing acid wash passivation process, qualified after carry out the cleaning at residual night and be dried.
(11) finished product detection
By standard, finished product threeway is carried out piece by piece physical dimension and shape position error detection on platform, carry out Non-Destructive Testing piece by piece simultaneously.And extract sample part carry out physicochemical property and corrosion resistance detection.
Accompanying drawing explanation
Fig. 1 is bimetallic clad steel plate threeway manufacturing process process chart
Detailed description of the invention
The present invention is described in further detail below.
(1) raw-material buying, reinspection:
The Explosion composite steel plate that buying Sichuan Jinglei Science & Technology Co., Ltd. produces, and the material of buying is carried out the inspections such as chemical composition, mechanical performance, adhesive strength, corrosion resistance and test, carrying out ultrasound examination one by one, detection base material whether there is internal flaw and whether faying face has peeling simultaneously.
(2) sweating heat processes simulation experiment, Product Process makes a reservation for
Through rechecking the test plate (panel) extracting three pieces of 300mm*600mm in qualified sheet stock, output the groove of X-type at the centre plasma that plate is wide along long side direction, and groove is polished the heat affected area of metallic luster removal cutting, these three pieces of test plate (panel)s are welded into test piece for welding according to welding manner N06625 welding wire and the CHE607GX welding rod of the welding procedure analog roll sealing of tube of assessment of conformity, test piece for welding is after Non-Destructive Testing is qualified, determine the common heat treatment temperature parameter area being suitable for of bi-material, in this range, preferably go out most suitably used concrete heating and heat treatment parameter；
The heat treatment process parameter of test piece for welding and results of property such as following table:
(3) blanking, steel pipe prefabricated
According to product and technological requirement, by art work sheet setting-out on steel plate, cutting stock, select numerical control cutting machine cutting；Design specialized cutting produces district, it is ensured that material blanking accurate；
(4) pipe crimping welding
The threeway specification of this trial-production is φ 610 × 610 × 610 × 29mm equal tee, according to design, steel plate is rolled on large-scale rolling machine the tubular pipe of φ 780 × 975mm, before roll bending, fibre board on clad surface bedding, it is to avoid occur in coiling process that coating metal scratches and contact with carbon steel tooling device with coating.Ensure to hold successfully after X-type groove staggered edge free and straight flange phenomenon at boil on the nape opposite the mouth.By remove the heat affected area of thermal cutting in groove by the method for machinery mill after, with rustless steel wire wheel by clean for the polishing of each in groove and both sides 50mm inner surface, according to the welding procedure of assessment of conformity, the basic unit of pipe, transition zone, coating are successively welded.Basic unit, excessive layer, coating throat thickness is monitored at any time during welding; reach standard-required; the strictest heat input controlling welding and interlayer temperature; and the degree of gas shield and the cleanliness factor of successively back chipping; ensure that welding bead quality reaches highest standard, it is to avoid there is the shortcoming such as pore, slag inclusion, cause source of corrosion to pipe fitting; the most both ensure that deposited metal possessed good mechanical property, improve again its erosion-resisting ability.According to the requirement (internal diameter φ 569) of threeway internal diameter alignment, the threeway mold that external diameter is 635mm that my company uses specialized designs to make is suppressed.
(5) compressing
nullHeat within the three-way pipe billet that Non-Destructive Testing is qualified loads gas heating furnace after welding job is completed，Carry out compression molding on a hydraulic press，Its overall process operation is: flattens three bulge perforate redraing arm supervisor school circles of fourth contact and goes to hold round mouth，In pressing process, the first pipe to be ensured presses predetermined heating schedule heating，Control programming rate≤200 DEG C/h，It is warming up to 950 DEG C ± 10 DEG C and is incubated compacting of coming out of the stove for 30 ± 10min minute，The strict immersion amount controlling base pipe weld seam side body during bulge，Ensure that immersion line flushes with the tyre bead of the placenta going out arm，And strictly monitor whole under press through journey，Control threeway sidewall and do not allow that some indent phenomenons occur，Avoid coating metal that fold occurs，In forming process，High temperature resistant Pulvis Talci is all coated with all moulds of industrial equipment surfaces of coating contacts，Both lubrication can have been played，When can avoid again pipe fitting high temperature, coating contacts with carbon steel moulds of industrial equipment，Pipe must be placed on outside stove after every time compacting or drawing and reenter stove when the temperature until pipe is down to below AC1 and carry out post bake，Thus avoid the variant part bit length phase to be in lower change point temperatures above continuously and cause metal grain degree superheating phenomenon such as thick grade to occur，Due good organization state before product had not only had the round and smooth presentation quality of standard but also had heat treatment is controlled by process above，Three-way forming、Remove end、After the circle of school, its key dimension is measured；, result meets the requirement of machining finished product, and measured value see table:
Threeway end key dimension measured value unit: mm after molding
(6) heat treatment
Tempering heat treatment process is added according to quenching, during quenching, charging temperature≤300 DEG C, programming rate controls at≤200 DEG C/h, is warming up to insulation when 940 DEG C～960 DEG C, temperature retention time controls 30～45min, cooling down in pure water, charging temperature≤300 DEG C during tempering, programming rate controls at≤200 DEG C/h, being warming up to insulation when 520 DEG C～560 DEG C, temperature retention time controls to cool down in atmosphere 40～60min；
(7) inner and outer surfaces processes
Threeway surfaces externally and internally is carried out reconditioning process；Process grade and reach Sa3.2 level；
(8) nondestructive inspection
Threeway body is carried out penetrant inspection and ultrasonic inspection；Butt welded seam carries out radiographic inspection and ultrasonic inspection；
(9) groove
Threeway pipe end is machined out groove, it is ensured that coating inner diameter deviation ＜ 0.5mm, coating wall thickness deviation+2mmm/-0.5mm.
(10) acid wash passivation processes
Utilize acid wash passivation liquid that threeway inwall carries out brushing acid wash passivation process, qualified after carry out the cleaning at residual night and be dried.
(11) finished product detection
By standard, finished product threeway is carried out piece by piece physical dimension and shape position error detection on platform, carry out Non-Destructive Testing piece by piece simultaneously.And extract sample part carry out physicochemical property and corrosion resistance detection.
Bimetallic clad steel plate system (L415MS+N08825) threeway has passed through China Research Inst. of Petroleum and Natural-Gas Piping Science's testing of materials center (mechanical property) and the detection evaluation of China University Of Petroleum Beijing's (corrosion resistance test), mechanics properties testing report is shown in " threeway report number: PMC-N1311775-CZHT ", threeway corrosion resistance test report number: 2013 oil glyphomancy [M] No. 306, No. 266, No. 267, No. 268, No. 269, No. 270, No. 272, No. 273, No. 274.Product design reasonable quality is reliable and stable, has reached the object performance index of similar products at home and abroad.
Above-described embodiment is only for technology design and the feature of the explanation present invention; its object is to allow the personage being familiar with this art will appreciate that present disclosure and to be carried out; can not limit the scope of the invention with this; all equivalence changes made according to spirit of the invention or modification; effect is similar, all should contain within the scope of the present invention.
Claims (6)
1. a bimetallic clad steel plate threeway method of manufacturing technology, it is characterised in that its processing step is:
(1) raw-material buying, reinspection:
Buying belongs to metallurgical compound Explosion composite steel plate, and the raw material Explosion composite steel plate of buying is carried out chemical composition, machine
Tool performance, adhesive strength, the inspection of corrosion resistance and test, carry out ultrasound examination simultaneously one by one, and detection base material is
No there is internal flaw and whether faying face has peeling；
(2) sweating heat processes simulation experiment, Product Process makes a reservation for
The sheet stock qualified through reinspection extracts the test plate (panel) of three pieces of 300mm*600mm, wide at plate along long side direction
Centre plasma outputs the groove of X-type, and groove polish the heat affected area that metallic luster removal is cut, these three pieces examinations
Plate welds with N06625 welding wire and CHE607GX welding rod according to the welding manner of the welding procedure analog roll sealing of tube of assessment of conformity
Becoming test piece for welding, test piece for welding, after Non-Destructive Testing is qualified, determines the common heat treatment temperature parameter being suitable for of bi-material
Scope；
(3) blanking, steel pipe prefabricated
According to product and technological requirement, by art work sheet setting-out on steel plate, cutting stock；
(4) pipe crimping welding
According to technological requirement, steel plate is rolled into drum by veneer reeling machine, and pipe longitudinal joint is welded, formed after the circle of school
Manufacture the blank of threeway；Before roll bending, fibre board on clad surface bedding, it is to avoid coiling process occurs coating metal scratch and
Coating contacts with carbon steel tooling device, it is ensured that hold after X-type groove staggered edge free and straight flange phenomenon at boil on the nape opposite the mouth successfully, will be with machinery in groove
After the method for mill removes the heat affected area of thermal cutting, with rustless steel wire wheel, each in groove and both sides 50mm inner surface is polished
Totally, according to the welding procedure of assessment of conformity, the basic unit of pipe, transition zone, coating are successively welded, during welding at any time
Monitoring basic unit, transition zone, coating throat thickness；
(5) compressing
Heat within the three-way pipe billet that Non-Destructive Testing is qualified loads gas heating furnace after welding job is completed, enter on a hydraulic press
Row compression molding；
(6) heat treatment
Adding tempering heat treatment process according to quenching, during quenching, charging temperature≤300 DEG C, programming rate controls at≤200 DEG C/h, rises
Temperature is incubated to when 940 DEG C～960 DEG C, and temperature retention time controls 30～45min, cools down, charging temperature during tempering in pure water
≤ 300 DEG C, programming rate controls at≤200 DEG C/h, is warming up to insulation when 520 DEG C～560 DEG C, and temperature retention time controls 40～60min
Cool down in atmosphere；
(7) inner and outer surfaces processes
Threeway surfaces externally and internally is carried out reconditioning process；Process grade and reach Sa3.2 level；
(8) nondestructive inspection
Threeway body is carried out penetrant inspection and ultrasonic inspection；Butt welded seam carries out radiographic inspection and ultrasonic inspection；
(9) groove
Threeway pipe end is machined out groove, it is ensured that coating inner diameter deviation ＜ 0.5mm, coating wall thickness deviation+2mm/-0.5mm；
(10) acid wash passivation processes
Utilize acid wash passivation liquid that threeway inwall carries out brushing acid wash passivation process, qualified after carry out the cleaning at residual night and be dried；
(11) finished product detection
By standard, finished product threeway is carried out piece by piece physical dimension and shape position error detection on platform, carry out Non-Destructive Testing piece by piece simultaneously；
And extract sample part carry out physicochemical property and corrosion resistance detection.
A kind of bimetallic clad steel plate threeway method of manufacturing technology the most according to claim 1, it is characterised in that step
Suddenly the Explosion composite steel plate in (1) uses high-strength steel to be combined mutually with Nickel-Based Steel.
A kind of bimetallic clad steel plate threeway method of manufacturing technology the most according to claim 1, it is characterised in that step
(2) also include the common heat treatment temperature parameter area being suitable for according to bi-material suddenly, determines most suitably used concrete
Heating and the step of heat treatment parameter.
A kind of bimetallic clad steel plate threeway method of manufacturing technology the most according to claim 1, it is characterised in that step
Suddenly cutting described in (3) selects numerical control cutting machine to cut in cutting production district, it is ensured that the accurate cutting of material blanking.
A kind of bimetallic clad steel plate threeway method of manufacturing technology the most according to claim 1, it is characterised in that step
Suddenly heat input and interlayer temperature to welding in welding process in (4), and the degree of gas shield and successively back chipping
Cleanliness factor detects and controls.
A kind of bimetallic clad steel plate threeway method of manufacturing technology the most according to claim 1, it is characterised in that step
Suddenly in (5), the operation of compression molding includes: flatten three bulge perforate redraing arm supervisor schools of fourth contact
Circle goes to hold round mouth, and in pressing process, the first pipe to be ensured presses the heating of predetermined heating schedule, control programming rate≤
200 DEG C/h, it is warming up to 950 DEG C ± 10 DEG C, is incubated compacting of coming out of the stove for 30 ± 10min minute, strictly controls during bulge
The immersion amount of base pipe weld seam side body, it is ensured that immersion line flushes with the tyre bead of the placenta going out arm, and strictly monitors whole
Press through journey under individual, control threeway sidewall and do not allow that some indent phenomenons occur, it is to avoid fold, molding occurs in coating metal
Cheng Zhong, all coats high temperature resistant Pulvis Talci with all moulds of industrial equipment surfaces of coating contacts, and pipe is in every time compacting or draws
Must be placed on outside stove the temperature until pipe after pulling out to be down to during below AC1 reenter stove and carry out post bake, threeway becomes
Type, go end, school circle after its key dimension is measured.
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| CN107009100A (en) * | 2017-05-11 | 2017-08-04 | 山东电力建设第工程公司 | A kind of new big footpath skew T preparation method |
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Address after: 061300 Zhenggang Industrial Park, Yanshan County, Cangzhou City, Hebei Province Patentee after: Hebei Hengtong Group Yupeng Heavy Engineering Technology Co.,Ltd. Address before: 061300 Zhenggang Industrial Park, Yanshan County, Cangzhou City, Hebei Province Patentee before: HEBEI YUPENG HEAVY INDUSTRY TECHNOLOGY Co.,Ltd. Address after: 061300 Zhenggang Industrial Park, Yanshan County, Cangzhou City, Hebei Province Patentee after: HEBEI YUPENG HEAVY INDUSTRY TECHNOLOGY Co.,Ltd. Address before: 061300 Zhenggang Industrial Park, Yanshan County, Cangzhou City, Hebei Province Patentee before: HEBEI YUPENG HEAVY INDUSTRY PIPELINE EQUIPMENT MANUFACTURING Co.,Ltd. |
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Effective date of registration: 20210611 Address after: 061000 houhan village, Hanji Town, Yanshan County, Cangzhou City, Hebei Province Patentee after: Hebei Hengtong Pipe Fittings Group Co.,Ltd. Address before: 061300 Zhenggang Industrial Park, Yanshan County, Cangzhou City, Hebei Province Patentee before: Hebei Hengtong Group Yupeng Heavy Engineering Technology Co.,Ltd. |