CN103862183B - A kind of stainless steel clad plate high-efficiency welding method - Google Patents
A kind of stainless steel clad plate high-efficiency welding method Download PDFInfo
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- CN103862183B CN103862183B CN201410079516.XA CN201410079516A CN103862183B CN 103862183 B CN103862183 B CN 103862183B CN 201410079516 A CN201410079516 A CN 201410079516A CN 103862183 B CN103862183 B CN 103862183B
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- welding
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- clad plate
- steel clad
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Classifications
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous seams
-
- 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
-
- 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
- B23K9/18—Submerged-arc welding
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention relates to composite board welding method field, more specifically stainless steel clad plate high-efficiency welding method, it comprises the steps: finished edge; It is right that groove is cleared up and organized; The basic unit of welding cladding side; Welding cladding; Welding back side basic unit, the invention has the beneficial effects as follows: adopt electroslag welding with wire to carry out the welding of cladding, select the welding wire that Cr, Ni content is close with multiple material, ensure the weld metal obtaining the excellent corrosion resistance of low-carbon (LC), the weld penetration of electroslag welding with wire is little in addition, the feature that weld width is large, can effectively reduce welding passage, the minimizing of welding passage means welding procedure program simplification, and welding efficiency improves, and the probability producing the defect such as incomplete fusion, slag inclusion also reduces greatly.The big current submerged-arc welding of 450A to 500A of back side basic unit is welded, and can effectively ensure substrate metal weld penetration, stop the generation of not merging defect, also can greatly improve welding procedure efficiency.
Description
Technical field
The present invention relates to composite board welding method field, more specifically a kind of stainless steel clad plate high-efficiency welding method.
Background technology
Stainless steel clad plate is usually used in the device fabrication of Korrosionsmedium industry, can meet corrosion proof requirement, can reduce device fabrication cost again.When the above stainless steel clad plate of thickness 4.5mm welds, when welding basic unit and cladding intersection, the wlding that Cr, Ni content need be adopted higher compared with cladding carries out the welding of transition zone, and during welding transition layer, must adopt the welding method of small area analysis, low_input_power, object reduces the dilution of Cr and Ni in transition zone weld metal and the C diffusion to transition zone weld seam.When welding cladding, in order to avoid producing the defects such as fire check, also need to adopt small area analysis, low_input_power welding procedure.The welding transition layer of tradition stainless steel clad plate and cladding are separately welding, cannot continuous welding, reduce operating efficiency, cladding side is when welding in addition, and the welding requirements of small area analysis, low_input_power reduce further the welding procedure efficiency of stainless steel clad plate undoubtedly.
Summary of the invention
In order to solve in above-mentioned traditional stainless steel clad plate welding procedure, transition zone separates with cladding and welds, and the too low problem of welding efficiency that must adopt small area analysis, low_input_power welding transition layer and cladding and cause, the invention provides and a kind ofly not only can ensure that welding quality is simultaneously but also improve the welding method of stainless steel clad plate welding efficiency.
The present invention is achieved by the following technical solutions:
Stainless steel clad plate high-efficiency welding method involved in the present invention, comprises the steps:
(a) finished edge, at the cladding side finished edge of stainless steel clad plate to be welded, slope type is Y-shaped, and bevel angle is 60 ± 2 °, root face size 3 ~ 5mm;
This bevel design, when adopting gas guarantor weldering to weld backing run, can not produce weldering and leaking phenomenon, is beneficial to employing walking dolly clamping gas guarantor welding gun and realizes full-automatic welding.
B the cleaning of () groove and organize right, uses the greasy dirt near the surface of electric angle grinder cleaning groove and groove within the scope of 15 ~ 20mm and iron scale, is then grouping spot welding;
The basic unit of (c) welding cladding side, backing run adopts gas to protect weldering welding, and filler pass adopts gas to protect weldering or submerged arc welding, and the top of this layer of welding bead should lower than compound interface 1 ~ 2mm;
D () welding cladding, adopts electroslag welding with wire to weld;
E () welding back side basic unit, adopts big current submerged-arc welding to weld.
Cladding thickness 0.5 ~ 3.0mm, groundwork thickness 4.0 ~ 16.0mm in above-mentioned stainless steel clad plate.
In above-mentioned steps (b), during groove group pair, groove root gap is 0.
In above-mentioned steps (c), backing run adopts gas to protect weldering and welds, and protective gas is 80%Ar and 20%CO
2gaseous mixture, shield gas flow rate 15 ~ 18L/Min, welding current is 180 ~ 240A, and weldingvoltage is 22 ~ 26V, and speed of welding is 300 ~ 400mm/Min, stem elongation degree 10 ~ 15mm.
Protective gas should not select 100%CO
2, because 100%CO
2during as protection gas, splash in welding process excessive, the corrosion resistance of cladding is harmful to.
Select as one of the present invention, in above-mentioned steps (c), the welding of filler pass adopts gas to protect weldering, and protective gas is 80%Ar and 20%CO
2gaseous mixture, shield gas flow rate 15 ~ 18L/Min, welding current is 180 ~ 240A, and weldingvoltage is 22 ~ 26V, and speed of welding is 300 ~ 400mm/Min, stem elongation degree 10 ~ 15mm.
Select as another kind of the present invention, in above-mentioned steps (c), the welding of filler pass adopts submerged-arc welding to weld, welding current 350A ~ 400A, weldingvoltage 28 ~ 32V, speed of welding 500 ~ 650mm/Min, stem elongation degree 25 ~ 30mm, solder flux scatters height 20 ~ 30mm.
In above-mentioned steps (d), the gage of wire of electroslag welding with wire is 3.2mm ~ 5.8mm, solder flux is the special sintered flux of PF-B7FK electroslag welding, welding current 350A ~ 400A, weldingvoltage 25 ~ 28V, speed of welding 140 ~ 190mm/Min, stem elongation degree 25 ~ 30mm, solder flux scatters height 20 ~ 30mm.
In above-mentioned steps (e), big current submerged arc welding electric current 450A ~ 500A, weldingvoltage 30 ~ 34V, speed of welding 500 ~ 650mm/Min, stem elongation degree 25 ~ 30mm, solder flux scatters height 20 ~ 30mm.
The invention has the beneficial effects as follows: cladding welding of the present invention adopts electroslag welding with wire to carry out the design of welding, in above-mentioned steps (d), transition zone and cladding need not be distinguished and weld respectively, but adopting gage of wire to be the electroslag welding with wire of 3.2mm ~ 5.8mm, directly carrying out the welding of cladding.Because the dilution rate of electroslag welding with wire is low, when soldering stainless steel cladding, without the need to welding transition layer, just can ensure that Cr, Ni content of cladding side weld meets the requirement of corrosion resistance, and C in substrate metal is very low to the diffusion in deposited metal, effectively reduce the ratio of the friable tissues such as martensite in weld metal.Adopt electroslag welding with wire to carry out the welding of cladding, select the welding wire that Cr, Ni content is close with multiple material, also can ensure the weld metal of the excellent corrosion resistance obtaining low-carbon (LC).The weld penetration of electroslag welding with wire is little in addition, the feature that weld width is large, can effectively reduce welding passage, and the minimizing of welding passage means welding procedure program simplification, and welding efficiency improves, and the probability producing the defect such as incomplete fusion, slag inclusion also reduces greatly.
Stainless steel clad plate high-efficiency welding method of the present invention, in above-mentioned steps (e), without carbon arc air gouging back chipping, the big current submerged-arc welding of 450A to 500A is selected to weld, can effectively ensure substrate metal weld penetration, stop the generation of not merging defect, also can greatly improve welding procedure efficiency.
Simultaneously by the design of composite plate groove, the restriction in groove root gap and to after the height of each welding bead, pass weld way choice, the welding quality of composite plate can not reduce.
Accompanying drawing explanation
Fig. 1 is slope type and welding passage schematic diagram.
In figure: 1-cladding, 2-basic unit, 3-backing run, 4-filler pass, 5-cladding welding bead, 6-back side basic unit welding bead.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described, so that those skilled in the art better can understand the present invention, but therefore do not limit the present invention.
Embodiment one
Be multiple material with 022Cr17Ni12Mo2 stainless steel in this example, the stainless compound steel plate that is base material for low-alloy structural steel Q345B, carry out embodiment of the present invention explanation, the thickness of stainless steel cladding is 2.5mm, and the thickness of basic unit is 8.0mm.Following steps are adopted to the efficient welding of this stainless steel clad plate.
A the welding ends of stainless steel clad plate, by processing methods such as mechanical milling or plasma cut, is processed into Y-shaped groove as shown in Figure 1 by ().Bevel angle is 60 °, root face size 3mm.
B () utilizes electric angle grinder to polish to the groove processed, remove the greasy dirt within the scope of groove face and neighbouring 20mm thereof and iron scale, in order to avoid weld seam produces the defects such as pore during welding.After polishing is clean, carry out groove group pair according to shown in Fig. 1.
C () adopts gas to protect weldering welding backing run and filler pass, select the ER50-6 solid core welding wire of diameter 1.2mm, protective gas is 80%Ar+20%CO
2gaseous mixture, shield gas flow rate 17L/Min, welding current is 220A, and weldingvoltage is 25V, and speed of welding is 300mm/Min, stem elongation degree 15mm, and the top of this layer of welding bead is lower than compound interface 1.5mm.
D () adopts electroslag welding with wire method welding cladding, select the real core stainless steel welding stick of the US-316L of diameter 4.0mm, solder flux is PF-B7FK sintered flux, welding current 380A, weldingvoltage 26V, speed of welding 190mm/Min, stem elongation degree 26mm, solder flux scatters height 25mm.When selecting this welding parameter, a welding fabrication of cladding can be realized, enormously simplify the welding procedure of stainless steel cladding, improve welding efficiency.
E (), by submerged arc welding basic unit, selects the H10Mn2 solid core welding wire of diameter 4.0mm, solder flux is SJ101 sintered flux, welding current 500A, weldingvoltage 33V, speed of welding 550mm/Min, stem elongation degree 25mm, and solder flux scatters height 30mm.
Embodiment two
Be multiple material with 022Cr17Ni12Mo2 stainless steel in this example, the stainless compound steel plate that is base material for low-alloy structural steel Q345B, carry out embodiment of the present invention explanation, the thickness of stainless steel cladding is 2.5mm, and the thickness of basic unit is 8.0mm.Following steps are adopted to the efficient welding of this stainless steel clad plate.
A (), by processing methods such as mechanical milling or plasma cut, the welding ends of stainless steel clad plate is processed into Y-shaped groove as shown in Figure 1, bevel angle is 60 °, root face size 3mm;
B () utilizes electric angle grinder to polish to the groove processed, remove the greasy dirt within the scope of groove face and neighbouring 20mm thereof and iron scale.After polishing is clean, carry out groove group pair according to shown in Fig. 1.
C () adopts gas to protect weldering welding backing run, select the ER50-6 solid core welding wire of diameter 1.2mm, protective gas is 80%Ar+20%CO
2gaseous mixture, shield gas flow rate 17L/Min, welding current is 220A, and weldingvoltage is 25V, and speed of welding is 300mm/Min, stem elongation degree 15mm;
Adopt the filler pass of submerged arc welding layer.Solder flux is SJ101 sintered flux, and welding wire is the H10Mn2 solid core welding wire of diameter 3.2mm, welding current 350A, weldingvoltage 30V, speed of welding 600mm/Min, stem elongation degree 25mm, and solder flux scatters height 25mm, and the top of this layer of welding bead is lower than compound interface 1.5mm.
D () adopts electroslag welding with wire method welding cladding, select the real core stainless steel welding stick of the US-316L of diameter 4.0mm, solder flux is PF-B7FK sintered flux, welding current 380A, weldingvoltage 26V, speed of welding 190mm/Min, stem elongation degree 26mm, solder flux scatters height 25mm.
E (), by submerged arc welding basic unit, selects the H10Mn2 solid core welding wire of diameter 4.0mm, solder flux is SJ101 sintered flux, welding current 500A, weldingvoltage 33V, speed of welding 550mm/Min, stem elongation degree 25mm, and solder flux scatters height 30mm.
The inventive method and conventional method is adopted to weld the stainless steel clad plate of same size and material respectively, stainless steel cladding material 022Cr17Ni12Mo2, thickness 2.5mm, basic unit material Q345B, thickness 8.0mm, testing length 500mm.When result shows the Welder of the inventive method, comparatively conventional method shortens dramatically, and the intensity of welding point, toughness, the mechanical property such as bending and decay resistance all meet instructions for use.This shows the inventive method a kind of stainless steel clad plate high-efficiency welding method really, and concrete comparing result is in table 1, table 2.
As can be seen from Table 1, welding method groove root gap of the present invention is 0, can not occur to weld the problem of leaking, and the present invention does not distinguish transition zone and cladding, the simultaneously back side not back chipping, can directly, continuous welding, slowly weld without the need to adopting small area analysis, operation is simple, saves time, increases work efficiency; And as can be seen from Table 2, the mechanical property of the stainless steel clad plate that welding method of the present invention is welded and decay resistance all do not decline.
Claims (7)
1. a stainless steel clad plate high-efficiency welding method, comprises the steps: (a) finished edge, and at the cladding side finished edge of stainless steel clad plate to be welded, slope type is Y-shaped, and bevel angle is 60 ± 2 °, root face size 3 ~ 5mm; The cleaning of (b) groove and organize right, the greasy dirt near the surface of cleaning groove and groove within the scope of 15 ~ 20mm and iron scale, be then grouping spot welding; The basic unit of (c) welding cladding side, backing run adopts gas to protect weldering welding, and filler pass adopts gas to protect weldering or submerged arc welding, the top of this layer of welding bead and compound interface distance 1 ~ 2mm; D () welding cladding, adopts electroslag welding with wire to weld; E () welding back side basic unit, adopts big current submerged-arc welding to weld;
Cladding thickness 0.5 ~ 3.0mm, groundwork thickness 4.0 ~ 16.0mm in described stainless steel clad plate.
2. stainless steel clad plate high-efficiency welding method according to claim 1, is characterized in that: in described step (b), and during groove group pair, groove root gap is 0.
3. stainless steel clad plate high-efficiency welding method according to claim 1; it is characterized in that: in described step (c); backing run adopts gas to protect weldering and welds; protective gas is 80%Ar and 20%CO2 gaseous mixture; shield gas flow rate 15 ~ 18L/Min, welding current is 180 ~ 240A, and weldingvoltage is 22 ~ 26V; speed of welding is 300 ~ 400mm/Min, stem elongation degree 10 ~ 15mm.
4. stainless steel clad plate high-efficiency welding method according to claim 1; it is characterized in that: in described step (c); the welding of filler pass adopts gas to protect weldering; protective gas is 80%Ar and 20%CO2 gaseous mixture; shield gas flow rate 15 ~ 18L/Min, welding current is 180 ~ 240A, and weldingvoltage is 22 ~ 26V; speed of welding is 300 ~ 400mm/Min, stem elongation degree 10 ~ 15mm.
5. stainless steel clad plate high-efficiency welding method according to claim 1, it is characterized in that: in described step (c), the welding of filler pass adopts submerged-arc welding to weld, welding current 350A ~ 400A, weldingvoltage 28 ~ 32V, speed of welding 500 ~ 650mm/Min, stem elongation degree 25 ~ 30mm, solder flux scatters height 20 ~ 30mm.
6. stainless steel clad plate high-efficiency welding method according to claim 1, it is characterized in that: in described step (d), the gage of wire of electroslag welding with wire is 3.2mm ~ 5.8mm, solder flux is the special sintered flux of PF-B7FK electroslag welding, welding current 350A ~ 400A, weldingvoltage 25 ~ 28V, speed of welding 140 ~ 190mm/Min, stem elongation degree 25 ~ 30mm, solder flux scatters height 20 ~ 30mm.
7. stainless steel clad plate high-efficiency welding method according to claim 1, it is characterized in that: in described step (e), big current submerged arc welding electric current 450A ~ 500A, weldingvoltage 30 ~ 34V, speed of welding 500 ~ 650mm/Min, stem elongation degree 25 ~ 30mm, solder flux scatters height 20 ~ 30mm.
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| CN103862183B true CN103862183B (en) | 2016-02-03 |
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| CN104588848A (en) * | 2014-11-27 | 2015-05-06 | 芜湖中集瑞江汽车有限公司 | Consumable electrode mixed gas shielded arc welding process for steel plate with thickness being 5 mm |
| CN105127566B (en) * | 2015-09-29 | 2017-03-08 | 青岛兰石重型机械设备有限公司 | The complete penetraction and fusion in welding welding method of big thickness carbon steel stainless steel clad plate |
| CN106270958A (en) * | 2016-09-19 | 2017-01-04 | 浙江海洋大学 | Stainless steel clad plate manufactures the welding procedure of vertical storage tank |
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| CN110961763B (en) * | 2018-09-28 | 2022-06-10 | 河北汇中管道装备有限公司 | Method for welding bimetal composite pipe fitting and pipeline |
| CN110695489A (en) * | 2019-10-22 | 2020-01-17 | 湖北理工学院 | Composite steel plate welding method |
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| CN113579432A (en) * | 2021-08-30 | 2021-11-02 | 广船国际有限公司 | Medium plate double-sided single-pass non-back-gouging submerged arc welding method |
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