CN103862183A - High-efficiency welding method of stainless steel composite board - Google Patents
High-efficiency welding method of stainless steel composite board Download PDFInfo
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- CN103862183A CN103862183A CN201410079516.XA CN201410079516A CN103862183A CN 103862183 A CN103862183 A CN 103862183A CN 201410079516 A CN201410079516 A CN 201410079516A CN 103862183 A CN103862183 A CN 103862183A
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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
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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
- 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
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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
- B23K9/18—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 invention relates to the field of composite board welding methods, in particular to a high-efficiency welding method of a stainless steel composite board. The high-efficiency welding method of the stainless steel composite board comprises the following steps: processing grooves; cleaning and pairing the grooves; welding a base layer on the side of a composite layer; welding the composite layer; welding a base layer on a back surface. The high-efficiency welding method of the stainless steel composite board has the beneficial effects that since electroslag welding with wire electrodes is adopted for welding the composite layer and electrode wires with content of Cr and Ni which is close to the content of Cr and Ni of composite materials, low-carbon weld metal with excellent corrosion resistance is guaranteed to be obtained; since the electroslag welding with wire electrodes has the characteristics of small weld depth and large weld width, welding passes can be effectively reduced, the reduction of the welding passes means the simplification of the welding process, the welding efficiency is improved and the probability of occurrence of defects such as incomplete fusion and slag inclusion is also greatly reduced; since the base layer of the back surface is welded by adopting 450A-500A large-current submerged-arc welding, the weld penetration of base metal can be effectively guaranteed, the defect of incomplete fusion is precluded from occurring and the welding efficiency can be greatly improved.
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 again device fabrication cost.When the above stainless steel clad plate welding of thickness 4.5mm, in the time of welding basic unit and multiple layer intersection, need to adopt the multiple layer higher wlding of Cr, Ni content to carry out the welding of transition zone, and when welding transition layer, must adopt the welding method of little electric current, low_input_power, object is to reduce the dilution of Cr and Ni in transition zone weld metal and the C diffusion to transition zone weld seam.In the time of the multiple layer of welding, for fear of producing the defects such as fire check, also need to adopt little electric current, low_input_power welding procedure.The welding transition layer of tradition stainless steel clad plate and multiple layer are separately welding, cannot continuous welding, reduced operating efficiency, another outer covering layer side is in the time of welding, and the welding requirements of little electric current, low_input_power has further reduced 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 welding with multiple layer, and the too low problem of welding efficiency that must adopt little electric current, low_input_power welding transition layer and multiple layer and cause, the invention provides a kind of welding method that can not only ensure welding quality simultaneously but also improve 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 multiple layer one side finished edge of stainless steel clad plate to be welded, slope type is Y-shaped, bevel angle is 60 ± 2 °, root face size 3～5mm;
This groove design, in the time adopting gas guarantor weldering to weld backing run, can not produce weldering and leak phenomenon, is beneficial to employing walking dolly clamping gas guarantor welding gun and realizes full-automatic welding.
(b) cleaning of groove and organize rightly, is used greasy dirt and iron scale within the scope of 15～20mm near the surface of electric angle grinder cleaning groove and groove, is then grouping spot welding;
(c) basic unit of the multiple layer of welding 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 be lower than compound interface 1～2mm;
(d) the multiple layer of welding, adopts electroslag welding with wire to weld;
(e) welding back side basic unit, adopts large electric current submerged-arc welding to weld.
Multiple layer thickness 0.5～3.0mm in above-mentioned stainless steel clad plate, groundwork thickness 4.0～16.0mm.
In above-mentioned steps (b), groove group to time, groove root gap is 0.
In above-mentioned steps (c), backing run adopts gas to protect 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 300～400 mm/ Min, stem elongation degree 10～15mm.
Protective gas should not be selected 100% CO
2, because 100% CO
2during as protection gas, in welding process, splash excessive, harmful to the corrosion resistance of multiple layer.
As a kind of selection 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 300～400 mm/ Min, stem elongation degree 10～15mm.
As another kind of selection 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 500～650 mm/ 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 140～190 mm/ Min, stem elongation degree 25～30mm, solder flux scatters height 20～30mm.
In above-mentioned steps (e), large electric current submerged arc welding electric current 450A～500A, weldingvoltage 30～34V, speed of welding 500～650 mm/ Min, stem elongation degree 25～30mm, solder flux scatters height 20～30mm.
The invention has the beneficial effects as follows: the design that multiple layer welding of the present invention adopts electroslag welding with wire to weld, in above-mentioned steps (d), need not distinguish transition zone and multiple layer and welding respectively, but adopt the electroslag welding with wire that gage of wire is 3.2mm～5.8mm, directly carry out the welding of multiple layer.Because the dilution rate of electroslag welding with wire is low, in the time of the multiple layer of soldering stainless steel, without welding transition layer, just can ensure the Cr of multiple layer side weld, the requirement that Ni content meets corrosion resistance, and C in substrate metal is very low to the diffusion in deposited metal, effectively reduce the ratio of the fragility tissue such as martensite in weld metal.Adopt electroslag welding with wire to carry out the welding of multiple layer, select Cr, Ni content and the welding wire that material is close again, also can ensure the weld metal of the excellent corrosion resistance that obtains low-carbon (LC).The weld penetration of electroslag welding with wire is little in addition, and 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 that produces the defects 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, select the large electric current submerged-arc welding of 450A to 500A to weld, can effectively ensure substrate metal weld penetration, the generation of stopping not merge defect, also can improve welding procedure efficiency greatly.
After the selection of the restriction of the design by composite plate groove, groove root gap simultaneously and the height to each welding bead, welding bead welding manner, the welding quality of composite plate can not reduce.
Brief description of the drawings
Fig. 1 is slope type and welding passage schematic diagram.
In figure: the multiple layer of 1-, 2-basic unit, 3-backing run, 4-filler pass, the multiple layer of 5-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 can better understand the present invention, but therefore do not limit the present invention.
Embodiment mono-
Stainless compound steel plate taking 022Cr17Ni12Mo2 stainless steel as multiple material, taking low-alloy structural steel Q345B as base material in this example, as example, carries out embodiment of the present invention explanation, and the thickness of stainless steel double layer is 2.5mm, and the thickness of basic unit is 8.0mm.The efficient welding of this stainless steel clad plate is adopted to following steps.
(a) by processing methods such as mechanical milling or plasma cuttings, 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) utilize electric angle grinder to polish to the groove processing, remove greasy dirt and iron scale within the scope of groove face and near 20mm thereof, in order to avoid weld seam produces the defects such as pore when welding.After polishing is clean, according to carrying out groove group pair shown in Fig. 1.
(c) adopt 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 300 mm/ Min, stem elongation degree 15mm, the top of this layer of welding bead is lower than compound interface 1.5mm.
(d) adopt the multiple layer of electroslag welding with wire method welding, select the real core stainless steel welding stick of US-316L of diameter 4.0mm, solder flux is PF-B7FK sintered flux, welding current 380A, weldingvoltage 26V, speed of welding 190 mm/ Min, stem elongation degree 26mm, solder flux scatters height 25mm.While selecting this welding parameter, can realize a welding fabrication of multiple layer, greatly simplify the welding procedure of stainless steel double layer, improve welding efficiency.
(e) by submerged arc welding basic unit, select the H10Mn2 solid core welding wire of diameter 4.0mm, solder flux is SJ101 sintered flux, welding current 500A, weldingvoltage 33V, speed of welding 550 mm/ Min, stem elongation degree 25mm, solder flux scatters height 30mm.
Embodiment bis-
Stainless compound steel plate taking 022Cr17Ni12Mo2 stainless steel as multiple material, taking low-alloy structural steel Q345B as base material in this example, as example, carries out embodiment of the present invention explanation, and the thickness of stainless steel double layer is 2.5mm, and the thickness of basic unit is 8.0mm.The efficient welding of this stainless steel clad plate is adopted to following steps.
(a) by processing methods such as mechanical milling or plasma cuttings, 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) utilize electric angle grinder to polish to the groove processing, remove greasy dirt and iron scale within the scope of groove face and near 20mm thereof.After polishing is clean, according to carrying out groove group pair shown in Fig. 1.
(c) adopt 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 300 mm/ 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 600 mm/ Min, stem elongation degree 25mm, solder flux scatters height 25mm, and the top of this layer of welding bead is lower than compound interface 1.5mm.
(d) adopt the multiple layer of electroslag welding with wire method welding, select the real core stainless steel welding stick of US-316L of diameter 4.0mm, solder flux is PF-B7FK sintered flux, welding current 380A, weldingvoltage 26V, speed of welding 190 mm/ Min, stem elongation degree 26mm, solder flux scatters height 25mm.
(e) by submerged arc welding basic unit, select the H10Mn2 solid core welding wire of diameter 4.0mm, solder flux is SJ101 sintered flux, welding current 500A, weldingvoltage 33V, speed of welding 550 mm/ Min, stem elongation degree 25mm, solder flux scatters height 30mm.
Adopt the inventive method and conventional method to weld respectively the stainless steel clad plate of same size and material, stainless steel double layer material 022Cr17Ni12Mo2, thickness 2.5mm, the material Q345B of basic unit, thickness 8.0mm, testing length 500mm.Result shortens dramatically compared with conventional method while showing the Welder of the inventive method, and the mechanical property such as the intensity of welding point, toughness, 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 there is not the problem that weldering is leaked, and the present invention do not distinguish transition zone and multiple layer, not back chipping of the back side simultaneously, can be directly, continuous welding, without adopting little electric current slowly to weld, operation is simple, saves time, and 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 (8)
1. a stainless steel clad plate high-efficiency welding method, comprises the steps:
(a) finished edge, at the multiple layer one side finished edge of stainless steel clad plate to be welded, slope type is Y-shaped, bevel angle is 60 ± 2 °, root face size 3～5mm;
(b) cleaning of groove and organize rightly, greasy dirt and iron scale near the cleaning surface of groove and groove within the scope of 15～20mm, be then grouping spot welding;
(c) basic unit of the multiple layer of welding 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) the multiple layer of welding, adopts electroslag welding with wire to weld;
(e) welding back side basic unit, adopts large electric current submerged-arc welding to weld.
2. stainless steel clad plate high-efficiency welding method according to claim 1, is characterized in that: multiple layer thickness 0.5～3.0mm in described stainless steel clad plate, groundwork thickness 4.0～16.0mm.
3. stainless steel clad plate high-efficiency welding method according to claim 1, is characterized in that: in described step (b), groove group to time, groove root gap is 0.
4. stainless steel clad plate high-efficiency welding method according to claim 1, is characterized in that: in described step (c), backing run adopts gas to protect 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 300～400 mm/ Min, stem elongation degree 10～15mm.
5. stainless steel clad plate high-efficiency welding method according to claim 1, is characterized in that: in described step (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 300～400 mm/ Min, stem elongation degree 10～15mm.
6. 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 500～650 mm/ 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 (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 140～190 mm/ Min, stem elongation degree 25～30mm, solder flux scatters height 20～30mm.
8. stainless steel clad plate high-efficiency welding method according to claim 1, it is characterized in that: in described step (e), large electric current submerged arc welding electric current 450A～500A, weldingvoltage 30～34V, speed of welding 500～650 mm/ Min, stem elongation degree 25～30mm, solder flux scatters height 20～30mm.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105127566A (en) * | 2015-09-29 | 2015-12-09 | 青岛兰石重型机械设备有限公司 | Full penetration welding method of large-thickness carbon steel and 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 |
| CN108705200A (en) * | 2018-06-07 | 2018-10-26 | 中国石油天然气集团有限公司 | A kind of welding method of stainless steel inner lining composite plate |
| CN110695489A (en) * | 2019-10-22 | 2020-01-17 | 湖北理工学院 | Composite steel plate welding method |
| CN110961763A (en) * | 2018-09-28 | 2020-04-07 | 河北汇中管道装备有限公司 | Method for welding bimetal composite pipe fitting and pipeline |
| CN112775627A (en) * | 2020-12-29 | 2021-05-11 | 山东鲁能光大钢结构有限公司 | Welding method for plate splicing welding channel steel |
| 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 |
| CN114905123A (en) * | 2022-06-20 | 2022-08-16 | 南京诚一新能源装备有限公司 | A kind of welding method of silver-steel composite plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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| CN110695489A (en) * | 2019-10-22 | 2020-01-17 | 湖北理工学院 | Composite steel plate welding method |
| CN112775627A (en) * | 2020-12-29 | 2021-05-11 | 山东鲁能光大钢结构有限公司 | Welding method for plate splicing welding channel steel |
| 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 |
| CN114905123A (en) * | 2022-06-20 | 2022-08-16 | 南京诚一新能源装备有限公司 | A kind of welding method of silver-steel composite plate |
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