CN108788385A - It is the stainless steel clad plate welding method of cladding by base, 904L stainless steels of Q345R low-alloy steel - Google Patents
It is the stainless steel clad plate welding method of cladding by base, 904L stainless steels of Q345R low-alloy steel Download PDFInfo
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- CN108788385A CN108788385A CN201810690368.3A CN201810690368A CN108788385A CN 108788385 A CN108788385 A CN 108788385A CN 201810690368 A CN201810690368 A CN 201810690368A CN 108788385 A CN108788385 A CN 108788385A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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Abstract
It is the stainless steel clad plate welding method of cladding that the present invention relates to a kind of by base, 904L stainless steels of Q345R low-alloy steel, and step is：Finished edge；Welding is completed in three stages, the welding of base before this, it is specifically divided into the welding of stainless steel side group layer and the welding of carbon steel side group layer, it is welded using the welding method of multi-pass welding, the followed by welding of base and cladding junction transition zone, it is finally the welding of stainless steel cladding, the welding of transition zone and cladding is all made of the welding method welding of multi-pass welding.Corresponding welding material is used according to welding base metal material difference, the welding of stainless steel clad plate is completed by different welding methods and welding condition.The method of the present invention is simple, easy to operate, can not only ensure welding quality, but also can improve welding efficiency.
Description
Technical field
The present invention relates to the welding method of stainless compound steel plate, it is specifically a kind of using Q345R low-alloy steel as base,
904L stainless steels are the stainless steel clad plate welding method of cladding.
Background technology
Stainless steel clad plate is the clad steel plate being combined into carbon steel or low alloy steel base and stainless steel cladding, it is
Carbon steel and stainless steel is made to form firm metallurgical binding by the methods of Explosion composite or method hot rolling.Stainless steel clad plate is not
The only corrosion resistance with stainless steel, and there is the good mechanical strength of carbon steel and processing performance, it is novel industrial products.This
The application of kind product, can save a large amount of stainless steels, have good economic value.
Stainless steel clad plate is welded, it, should be by carbon steel base to ensure that clad steel plate does not lose its original comprehensive performance
Layer and stainless steel cladding are respectively welded.Other than the welding of base and cladding, also transition zone weld the problem of, here it is stainless
The main feature of steel composite board welding.Transition weld seam should be used between cladding weld seam and base's weld seam.When transition zone welds, base
The local melting of structural steel makes stainless steel weld joint alloying component dilute.It is easy to form martensitic structure in weld seam, reduction connects
Plasticity, toughness and the corrosion resistance of head, joint is also easy to produce crackle, keeps weld insecure, influence joint quality.Therefore
Transition zone welding is the key that stainless steel clad plate welding.
Invention content
It is multiple that the technical problem to be solved in the present invention is to provide one kind using Q345R low-alloy steel as base, 904L stainless steels
The stainless steel clad plate welding method of layer, can avoid generating a large amount of martensitic structures and welding cold cracking, ensure the weldering of weld seam
It connects quality and reaches requirement.
The present invention solves its technical problem and adopts the technical scheme that：
A kind of by base, 904L stainless steels of Q345R low-alloy steel is the stainless steel clad plate welding method of cladding, including processing
Groove, groove are K-type groove；It is further comprising the steps of：
（1）Base welds, welding base metal Q345R+Q345R, and wlding is THY-51B flux-cored wires, using CO2 gas shielded arc weldings
Welding, 80~150 DEG C of weld preheating temperature；Base's weld seam of first soldering stainless steel side, after the completion of welding, face of weld is not than
Low 6~the 7mm of steel surface of becoming rusty；Back of weld carbon-point back chipping, polishing is bright, and the channeling face after polishing carries out MT detections；Then it welds
Base's weld seam of carbon steel side, weld reinforcement are 2 ± 1mm；Base's welding is welded using multi-layer multi-pass welding method, temperature control between road
System is at 80~150 DEG C；
（2）Transition zone welds, welding base metal 904L+Q345R, and wlding is E385-16 welding rods, using manual electric arc welding, welding rod
Drying temperature is 350~400 DEG C, and weld seam is soldered under stainless steel cladding surface of steel plate at 3~4mm；Transition zone welding is using single
The welding method welding of layer multi-pass welding, welds temperature between road<100℃；
（3）Cladding is welded, welding base metal 904L+904L, and wlding is E385-16 welding rods, and welding rod drying temperature is 350~400
DEG C, using the welding method of multi-pass welding, the filling and cover welding of stainless steel layer are completed, the weld reinforcement of stainless steel cladding is
0~1.5mm welds temperature between road<100℃.
Using the present invention of above-mentioned technical proposal, compared with prior art, advantageous effect is：
Layering welding uses multilayer to different welding layers using adaptable wlding and welding condition to base's weld seam
The welding method of multi-pass welding, can slow down layer cooling, and Crack prevention generates；Transition zone can be prevented using single layer welding
Weld seam is set to crack because stainless steel cladding overheats.The present invention not only increases composite plate quality of weld joint, also carries significantly
It is high to be welded into power, and then improve welding efficiency.
Further, preferred embodiment of the present invention is：
It is 40 °~45 ° on the upside of K-type bevel angle, downside is 10 °~15 °, and root face is 0~3mm, root gap is 0~
3mm。
Step（1）In, the chemical composition mass percent of the THY-51B flux-cored wires is：C：0.05；Mn：1.11；
Si：0.35；S：0.008；P：0.013；Cr：0.02；Ni：0.01.
Step（1）Welding condition be：180~240A of electric current, 28~35V of voltage, speed of welding are 10~22cm/
Min, 18~22L/min of gas flow.
Step（1）In, after the completion of base's weld seam welding of stainless steel side, back of weld carbon-point back chipping, polishing is bright, polishing
Channeling face afterwards carries out MT detections；After the completion of base's weld seam welding of carbon steel side, face of weld uses grinder buffing fairing, removes
Burr does UT detections after 24 hours.
Step（2）And step（3）Described in the chemical composition mass percents of E385-16 welding rods be：C：0.028；Mn：
1.67；Si：0.58；S：0.007；P：0.015；Cr：20.52；Ni：25.23；Mo：4.98；Cu：1.69.
Step（2）And step（3）Welding condition be：120~170A of electric current, 25~32V of voltage, speed of welding are
8~22cm/min.
Step（2）In, do PT detections within 24 hours after the completion of transition zone welding.
Step（3）In, UT and PT detections are done within 24 hours after the completion of cladding welding.
Description of the drawings
Fig. 1 is welding groove machining sketch chart；
Fig. 2 is base's welding schematic diagram of stainless steel cladding side；
Fig. 3 is base's welding schematic diagram of carbon steel side；
Fig. 4 is transition zone welding schematic diagram；
Fig. 5 is stainless steel cladding welding schematic diagram；
In figure：I, Q345R low-alloy steel base；II, 904L stainless steels cladding；1, stainless steel side group layer weld seam；2, carbon steel side group
Layer weld seam；3, transition zone weld seam；4, stainless steel cladding weld seam.
Specific implementation mode
The present invention is described in detail with reference to the accompanying drawings and embodiments.
It is base, 904L stainless steels for the stainless of cladding that welding method described in the present embodiment, which is using Q345R low-alloy steel,
Steel composite board horizontal position welding（H）Welding method carries out according to the following steps：
（1）Finished edge：Referring to Fig. 1, the welding end surface of stainless steel clad plate is processed into K-type groove, K-type bevel angle upside
It it is 40 °~45 °, downside is 10 °~15 °, and root face is 0~3mm, and root gap is 0~3mm.
（2）Base welds：Referring to Fig. 2,3, base's welding is divided into two parts progress, i.e. stainless steel side group layer weld seam 1 and carbon steel
Side group layer weld seam 2 is welded according to the sequence of weldering carbon steel side group layer weld seam 2 after first weldering stainless steel side group layer weld seam 1.Welding base metal
For：Q345R+Q345R is welded using CO2 gas shielded arc weldings, and welding wire selects THY-51B, a diameter of 1.2mm, source of welding current polarity
For DCEP, current regulation to 180~240A, voltage is adjusted to 28~35V, 10~22cm/min of speed of welding, gas flow 18
~22L/min.Using multi-layer multi-pass welding method, each technological parameter will be welded and adjusted in place, soldering stainless steel side group layer is started
Weld seam 1, temperature control is at 80~150 DEG C between road.In order to ensure that transition zone welding quality, face of weld are lower than stainless steel surface
6~7mm.Back side carbon arc air gouging back chipping, polishing is bright, carries out the welding of carbon steel side group layer weld seam 2 after qualified again using MT detections.
The welding of carbon steel side group layer weld seam 2 equally uses the welding method of stainless steel side group layer weld seam 1, welds each technique ginseng
For number with stainless steel side group layer weld seam 1, weld reinforcement is 2 ± 1mm, and after the completion of welding, face of weld need to use grinder buffing fairing,
Deburring, welding do UT detections after completing 24 hours.
It waits for that base's welding is completed, ultrasonic examination is done after 24 hours, and 1 surface of stainless steel side group layer weld seam carries out PT detections
The welding of transition zone is carried out after qualification again.
（3）Transition zone welds：Referring to Fig. 4, transition zone weld seam 3 is welded as the key position of entire welding process, before welding
The oxide layer on surface is removed, face of weld polishing is bright.Welding base metal is：904L+Q345R, using manual electric arc welding, wlding
For E385-16 welding rods, a diameter of 4mm, welding rod drying temperature is 350~400 DEG C, and source of welding current polarity is DCEP, welding procedure
Parameter is：120~170A of electric current, 25~32V of voltage, speed of welding are 8~22cm/min.Weld seam is soldered to stainless steel composite steel
Under plate surface at 3~4mm.It is welded using the welding method of single layer multi-pass welding, welds temperature between road<100℃.To forbid when welding
Swing, control welding straightness, in groove both sides transition zone weld seam should be connected with base material stainless steel cladding simultaneously rounding off.Postwelding
Do PT detections within 24 hours.
（4）Cladding is welded：Referring to Fig. 5, cladding weld seam 4 welds, and welding base metal is：904L+904L, with transition zone weld seam 3
Equally, using manual electric arc welding, wlding is E385-16 welding rods, and a diameter of 4mm, welding rod drying temperature is 350~400 DEG C, welding
Electric power polarity is DCEP.Welding condition is welded with transition zone weld seam 3, using the welding method of multi-pass welding, completes stainless steel
The weld reinforcement of the filling and cover welding of layer, stainless steel cladding is 0~1.5mm, welds temperature between road<100℃.Postwelding 24
Hour does UT and PT detections, and the stainless steel cladding face of weld of surface examination qualification is not required to polish.
The foregoing is merely the practicable embodiments of the present invention, not thereby limit to the interest field of the present invention,
It is all to use equivalence changes made by present specification, it is both contained within the interest field of the present invention.
Claims (9)
1. by base, 904L stainless steels of Q345R low-alloy steel it is the stainless steel clad plate welding method of cladding a kind of, including adds
Work groove, groove are K-type groove；It is characterized in that, further comprising the steps of：
（1）Base welds, welding base metal Q345R+Q345R, and wlding is THY-51B flux-cored wires, using CO2 gas shielded arc weldings
Welding, 80~150 DEG C of weld preheating temperature；Base's weld seam of first soldering stainless steel side, after the completion of welding, face of weld is not than
Low 6~the 7mm of steel surface of becoming rusty；Back of weld carbon-point back chipping, polishing is bright, and the channeling face after polishing carries out MT detections；Then it welds
Base's weld seam of carbon steel side, weld reinforcement are 2 ± 1mm；Base's welding is welded using multi-layer multi-pass welding method, temperature control between road
System is at 80~150 DEG C；
（2）Transition zone welds, welding base metal 904L+Q345R, and wlding is E385-16 welding rods, using manual electric arc welding, welding rod
Drying temperature is 350~400 DEG C, and weld seam is soldered under stainless steel cladding surface of steel plate at 3~4mm；Transition zone welding is using single
The welding method welding of layer multi-pass welding, welds temperature between road<100℃；
（3）Cladding is welded, welding base metal 904L+904L, and wlding is E385-16 welding rods, and welding rod drying temperature is 350~400
DEG C, using the welding method of multi-pass welding, the filling and cover welding of stainless steel layer are completed, the weld reinforcement of stainless steel cladding is
0~1.5mm welds temperature between road<100℃.
2. by base, 904L stainless steels of Q345R low-alloy steel it is the stainless steel clad plate of cladding according to claim 1
Welding method, it is characterised in that：It is 40 °~45 ° on the upside of K-type bevel angle, downside is 10 °~15 °, root face is 0~
3mm, root gap are 0~3mm.
3. by base, 904L stainless steels of Q345R low-alloy steel it is the stainless steel clad plate of cladding according to claim 1
Welding method, it is characterised in that：Step（1）In, the chemical composition mass percent of the THY-51B flux-cored wires is：C：
0.05；Mn：1.11；Si：0.35；S：0.008；P：0.013；Cr：0.02；Ni：0.01.
4. by base, 904L stainless steels of Q345R low-alloy steel it is the stainless steel clad plate of cladding according to claim 1
Welding method, it is characterised in that：Step（1）Welding condition be：180~240A of electric current, 28~35V of voltage, welding speed
Degree is 10~22cm/min, 18~22L/min of gas flow.
5. by base, 904L stainless steels of Q345R low-alloy steel it is the stainless steel clad plate of cladding according to claim 1
Welding method, it is characterised in that：Step（1）In, after the completion of base's weld seam welding of stainless steel side, back of weld carbon-point back chipping,
Polishing is bright, and the channeling face after polishing carries out MT detections；After the completion of base's weld seam welding of carbon steel side, face of weld uses grinding wheel
UT detections are done in polishing fairing, deburring after 24 hours.
6. by base, 904L stainless steels of Q345R low-alloy steel it is the stainless steel clad plate of cladding according to claim 1
Welding method, it is characterised in that：Step（2）And step（3）Described in E385-16 welding rods chemical composition mass percent
For：C：0.028；Mn：1.67；Si：0.58；S：0.007；P：0.015；Cr：20.52；Ni：25.23；Mo：4.98；Cu：1.69.
7. by base, 904L stainless steels of Q345R low-alloy steel it is the stainless steel clad plate of cladding according to claim 1
Welding method, it is characterised in that：Step（2）And step（3）Welding condition be：120~170A of electric current, voltage 25~
32V, speed of welding are 8~22cm/min.
8. by base, 904L stainless steels of Q345R low-alloy steel it is the stainless steel clad plate of cladding according to claim 1
Welding method, it is characterised in that：Step（2）In, do PT detections within 24 hours after the completion of transition zone welding.
9. by base, 904L stainless steels of Q345R low-alloy steel it is the stainless steel clad plate of cladding according to claim 1
Welding method, it is characterised in that：Step（3）In, UT and PT detections are done within 24 hours after the completion of cladding welding.
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Cited By (6)
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| CN110026644A (en) * | 2019-04-10 | 2019-07-19 | 中广核研究院有限公司 | The corner connection soldering method and corner connector of composite plate and two phase stainless steel |
| CN110026642A (en) * | 2019-04-10 | 2019-07-19 | 中广核研究院有限公司 | The butt welding method and double-sided composite plate interfacing part of double-sided composite plate |
| CN110026647A (en) * | 2019-04-10 | 2019-07-19 | 中广核研究院有限公司 | The butt welding method and interfacing part of single side composite plate |
| CN110026648A (en) * | 2019-04-10 | 2019-07-19 | 中广核研究院有限公司 | The butt welding method and interfacing part of two phase stainless steel and composite plate |
| CN110026661A (en) * | 2019-04-10 | 2019-07-19 | 中广核研究院有限公司 | The butt welding method and interfacing part of double-sided composite plate and two phase stainless steel |
| CN115283800A (en) * | 2022-08-31 | 2022-11-04 | 中国铁建大桥工程局集团有限公司 | Welding method for double-metal high-strength composite bridge steel X-shaped joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110026644A (en) * | 2019-04-10 | 2019-07-19 | 中广核研究院有限公司 | The corner connection soldering method and corner connector of composite plate and two phase stainless steel |
| CN110026642A (en) * | 2019-04-10 | 2019-07-19 | 中广核研究院有限公司 | The butt welding method and double-sided composite plate interfacing part of double-sided composite plate |
| CN110026647A (en) * | 2019-04-10 | 2019-07-19 | 中广核研究院有限公司 | The butt welding method and interfacing part of single side composite plate |
| CN110026648A (en) * | 2019-04-10 | 2019-07-19 | 中广核研究院有限公司 | The butt welding method and interfacing part of two phase stainless steel and composite plate |
| CN110026661A (en) * | 2019-04-10 | 2019-07-19 | 中广核研究院有限公司 | The butt welding method and interfacing part of double-sided composite plate and two phase stainless steel |
| CN110026644B (en) * | 2019-04-10 | 2021-11-09 | 中广核研究院有限公司 | Angle welding method and angle connector for composite board and duplex stainless steel |
| CN115283800A (en) * | 2022-08-31 | 2022-11-04 | 中国铁建大桥工程局集团有限公司 | Welding method for double-metal high-strength composite bridge steel X-shaped joint |
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