CN106808068B - A kind of method of stainless steel composite pipe or composite plate docking MIG+TIG two-sided welding - Google Patents
A kind of method of stainless steel composite pipe or composite plate docking MIG+TIG two-sided welding Download PDFInfo
- Publication number
- CN106808068B CN106808068B CN201710018889.XA CN201710018889A CN106808068B CN 106808068 B CN106808068 B CN 106808068B CN 201710018889 A CN201710018889 A CN 201710018889A CN 106808068 B CN106808068 B CN 106808068B
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- mig
- tig
- stainless steel
- welding
- welding gun
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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
- 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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
Abstract
The invention discloses a kind of methods of stainless steel composite pipe or composite plate docking MIG+TIG two-sided welding, comprising the following steps: step 1, base are provided with bevel cuts, and stainless steel cladding is set as keeping original thickness；Step 2 welds base using MIG welding gun, is welded using TIG welding gun to stainless steel cladding, and MIG welding gun and TIG welding gun are welded along the same direction, and TIG welding gun starts welding prior to MIG welding gun.The method of a kind of stainless steel composite pipe of the invention or composite plate docking MIG+TIG two-sided welding, so that the weld seam of stainless steel composite pipe had not only had good corrosion resistance, but also has good comprehensive mechanical property.
Description
Technical field
The present invention relates to field of material processing more particularly to a kind of stainless steel composite pipe or composite plate docking MIG+TIG are bis-
The method of face welding.
Background technique
Stainless steel composite pipe or composite plate are mainly used in salinization engineering, petrochemical industry project, environmental protection equipment, anticorrosion equipment, change
Work storage tank and pipeline, lead smelting pot, drying equipment, hydraulic engineering, silo equipment, water correction plant, coal scuttle composite plate supply water
Pipeline clad steel plate, desulfurizing tower are used, heat exchanger, paper making equipment, refining equipment, crucible, and caustic soda equipment is used, and pulp tower etc. is multiple
The application of plywood necessarily be unable to do without the welding of multiple tube or composite plate.It the use of stainless steel composite pipe or composite plate main purpose is benefit
With the intensity and plasticity and toughness and cladding corrosion resistance of base's carbon steel or low alloy steel, the properties such as wearability.
Stainless steel composite pipe or composite plate butt welding generally use the one side welding with back formation MIG of 304L stainless steel welding stick
Weldering, but due to the flowing in molten bath, the low-alloy steel or carbon steel of base side are because molten bath flows into cladding stainless steel side, to occur
, there is martensitic structure in cladding stainless steel side, causes cladding stainless steel side resistance in the weld seam that welding wire, cladding, base material mix
Corrosive nature is deteriorated.
Therefore, those skilled in the art is dedicated to developing a kind of stainless steel composite pipe or composite plate docking MIG+TIG is bis-
The method of face welding, so that the weld seam of stainless steel composite pipe had not only had good corrosion resistance, but also has good comprehensive mechanics
Performance.
Summary of the invention
In view of the above drawbacks of the prior art, compound the technical problem to be solved by the present invention is to develop a kind of stainless steel
The method of pipe or composite plate docking MIG+TIG two-sided welding, so that stainless steel composite pipe or the weld seam of composite plate are not in multiple
The weld seam that layer, base material mix, remains independent base and cladding, so that the welding of stainless steel composite pipe or composite plate connects
Head not only has good corrosion resistance, but also has good comprehensive mechanical property, and at low cost, and assembly is simple, is easy to implement
Automation.
To achieve the above object, the present invention provides a kind of stainless steel composite pipes or composite plate to dock MIG+TIG welding by both sides
The method connect, comprising the following steps:
Step 1, base are provided with bevel cuts, and stainless steel cladding is set as keeping original thickness；
Step 2 welds base using MIG welding gun, is welded using TIG welding gun to stainless steel cladding, MIG weldering
Rifle and TIG welding gun are welded along the same direction.
Further, TIG welding gun starts prior to MIG welding gun and welds.
Further, MIG welding gun uses welding wire identical with base material, and TIG welding gun does not use welding wire.
Further, base is carbon steel base layer.
Further, base is low-alloy steel base.
Further, the diameter of the welding wire of MIG welding gun is 1.0-1.2mm.
Further, the distance between MIG welding gun and TIG welding gun are greater than 10-12 times of diameter of the welding wire of MIG welding gun.
Further, the inclined-plane angle of base to be welded is 80 ° -90 °.
Further, the angle of MIG welding gun is arranged to vertical with welding direction.
Technical effect
1, welding method of the invention is simple and practical, it is easy to accomplish automation；Welding efficiency height, reliable welding quality；
2, use that welding method of the invention makes stainless steel composite pipe or the weld seam of composite plate is not in cladding, base
The weld seam of material mixing, remains independent base and cladding, so that stainless steel composite pipe or the welding point of composite plate both had
There is good corrosion resistance, and has good comprehensive mechanical property.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 be a preferred embodiment of the invention a kind of stainless steel composite pipe or composite plate docking MIG+TIG it is two-sided
The front view of welding method.
Fig. 2 be a preferred embodiment of the invention a kind of stainless steel composite pipe or composite plate docking MIG+TIG it is two-sided
The side view of welding method.
Fig. 3 be a preferred embodiment of the invention a kind of stainless steel composite pipe or composite plate docking MIG+TIG it is two-sided
The top view of welding method.
Fig. 4 is a preferred embodiment of the invention using a kind of stainless steel composite pipe or composite plate docking MIG+TIG
The welding process schematic diagram of two-sided welding.
Fig. 5 is a preferred embodiment of the invention using a kind of stainless steel composite pipe or composite plate docking MIG+TIG
The welding schematic illustration of tissue that two-sided welding method obtains.
Fig. 6 is the welding schematic illustration of tissue that the method that is not used obtains.
Specific embodiment
As shown in Figure 1, a preferred embodiment of the invention provides a kind of stainless steel composite pipe or composite plate docking MIG+
The method of TIG two-sided welding, comprising the following steps:
Step 1, base 1 are provided with bevel cuts, and stainless steel cladding 2 is set as keeping original thickness；
Step 2 welds base 1 using MIG welding gun 3, is welded using TIG welding gun 4 to stainless steel cladding 2,
MIG welding gun 3 and TIG welding gun 4 are welded along the same direction, and TIG welding gun starts welding prior to MIG welding gun.
As shown in Figure 1, needing to process stainless steel clad plate before welding, a bevel cuts are processed into base 1, and
Retain the original thickness of stainless steel cladding 2.Wherein, base is carbon steel or low alloy steel.
Stainless steel clad plate is by for stainless steel cladding 2 (stainless steel 0.5mm---3mm) and base 1 (carbon steel or low-alloy
Steel 2.5mm---5mm) bimetallic plates made of composite rolling, guarantee that corrosion resisting property, intensity are obtained mainly by base by cladding, this
Sample can save a large amount of stainless steels, have good economic value.
Since protecting effect when stainless steel cladding 2 is using TIG weld is good, alloying element is unlikely to be burnt, therefore appearance of weld
It is good, without skull, any surface finish.The welding wire to match with cladding or base can be selected when welding base, guaranteeing that fusion is good
It reduces the amount of fusing into of parent metal under the premise of good to the greatest extent, reduces penetration ratio.Therefore, the welding wire of Ying Caiyong small diameter and compared with
Small weld heat input.Further, MIG welding gun 3 uses welding wire identical with stainless steel double layer material, it is preferable that MIG welding gun
The diameter of 3 welding wire is 1.0-1.2mm.Preferably, the welding wire of MIG welding gun 3 selects stainless steel solid welding wire.
The inclined-plane angle of base 1 to be welded is 80 ° -90 °.Preferably, inclined-plane angle is 90 °.
As shown in Figure 2, Figure 3, Figure 4, base 1 is welded using MIG welding gun 3, using TIG welding gun 4 to stainless steel double
Layer 2 is welded, and MIG welding gun 3 and TIG welding gun 4 are welded along the same direction, and TIG welding gun starts weldering prior to MIG welding gun
It connects.The distance between MIG welding gun 3 and TIG welding gun 4 are greater than 10-12 times of diameter of the welding wire of MIG welding gun 3.The angle of MIG welding gun 3
It is vertical with welding direction.
As shown in fig. 6, there is martensite and retained austenite using the seam organization that common MIG welding method obtains,
This is because base mixes with cladding, and martensite occurs in stainless steel cladding side weld, affects cladding side since molten bath is flowed
Corrosion resistance.
As shown in figure 5, not sent out using a kind of method of stainless steel clad plate docking MIG+TIG two-sided welding of the invention
Existing martensitic structure, illustrates that the chemical element of base is not mixed into the cladding, the weld seam obtained in this way is not in cladding, base
The weld seam of material mixing, remains independent base and cladding, not only has good corrosion resistance, but also have good resultant force
Learn performance.
MIG+TIG two-sided welding method of the invention can also be applied to soldering stainless steel multiple tube.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (6)
1. a kind of method of stainless steel composite pipe or composite plate docking MIG+TIG two-sided welding, which is characterized in that including following step
It is rapid:
Step 1, base are provided with bevel cuts, and stainless steel cladding is set as keeping original thickness；
Step 2 welds the base using MIG welding gun, is welded using TIG welding gun to the stainless steel cladding,
The MIG welding gun and the TIG welding gun are welded along the same direction, and the TIG welding gun starts weldering prior to the MIG welding gun
It connects；The MIG welding gun uses welding wire identical with the base material, and the TIG welding gun does not use welding wire；
The distance between the MIG welding gun and the TIG welding gun are greater than 10-12 times of diameter of the welding wire of the MIG welding gun.
2. the method for a kind of stainless steel composite pipe as described in claim 1 or composite plate docking MIG+TIG two-sided welding, special
Sign is that the base is carbon steel base layer.
3. the method for a kind of stainless steel composite pipe as described in claim 1 or composite plate docking MIG+TIG two-sided welding, special
Sign is that the base is low-alloy steel base.
4. the method for a kind of stainless steel composite pipe as described in claim 1 or composite plate docking MIG+TIG two-sided welding, special
Sign is that the diameter of the welding wire of the MIG welding gun is 1.0-1.2mm.
5. the method for a kind of stainless steel composite pipe as described in claim 1 or composite plate docking MIG+TIG two-sided welding, special
Sign is that the inclined-plane angle of the base to be welded is 80 ° -90 °.
6. the method for a kind of stainless steel composite pipe as described in claim 1 or composite plate docking MIG+TIG two-sided welding, special
Sign is that the angle of the MIG welding gun is arranged to vertical with welding direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018889.XA CN106808068B (en) | 2017-01-11 | 2017-01-11 | A kind of method of stainless steel composite pipe or composite plate docking MIG+TIG two-sided welding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710018889.XA CN106808068B (en) | 2017-01-11 | 2017-01-11 | A kind of method of stainless steel composite pipe or composite plate docking MIG+TIG two-sided welding |
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| CN106808068A CN106808068A (en) | 2017-06-09 |
| CN106808068B true CN106808068B (en) | 2019-06-07 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107252977B (en) * | 2017-07-21 | 2019-03-12 | 上海交通大学 | A kind of single fillet welded method of laser+MIG/MAG |
| CN108296584B (en) * | 2018-02-08 | 2020-08-25 | 北京科技大学 | Titanium-steel plate butt joint double-heat-source low-heat-input brazing method |
| CN112122750B (en) * | 2020-09-15 | 2022-04-29 | 天津大学 | Circular seam butt welding method for seamless steel pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05293661A (en) * | 1992-04-20 | 1993-11-09 | Nippon Steel Corp | Production of clad steel tube excellent in corrosion resistance |
| CN101249583A (en) * | 2008-03-26 | 2008-08-27 | 大连理工大学 | Magnesium alloy gas metal arc welding-non-melt pole shield-arc welding composite weld |
| WO2011067589A1 (en) * | 2009-12-01 | 2011-06-09 | Saipem S.P.A. | A method of and a welding station for laying a pipeline, with pipe section welded together by internal and external welding |
| CN104607773A (en) * | 2014-12-11 | 2015-05-13 | 云南昆钢新型复合材料开发有限公司 | Tubulation welding method of stainless steel outer composite tube |
| CN104874901A (en) * | 2015-04-14 | 2015-09-02 | 招商局重工（江苏）有限公司 | Double-side double-arc synchronous butt welding method of medium-thickness plate of sliding box of self-elevating drilling platform |
| CN105798440A (en) * | 2016-05-27 | 2016-07-27 | 宝鸡石油钢管有限责任公司 | Pure titanium or titanium alloy/carbon steel laminar composite plate welding method |
-
2017
- 2017-01-11 CN CN201710018889.XA patent/CN106808068B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05293661A (en) * | 1992-04-20 | 1993-11-09 | Nippon Steel Corp | Production of clad steel tube excellent in corrosion resistance |
| CN101249583A (en) * | 2008-03-26 | 2008-08-27 | 大连理工大学 | Magnesium alloy gas metal arc welding-non-melt pole shield-arc welding composite weld |
| WO2011067589A1 (en) * | 2009-12-01 | 2011-06-09 | Saipem S.P.A. | A method of and a welding station for laying a pipeline, with pipe section welded together by internal and external welding |
| CN104607773A (en) * | 2014-12-11 | 2015-05-13 | 云南昆钢新型复合材料开发有限公司 | Tubulation welding method of stainless steel outer composite tube |
| CN104874901A (en) * | 2015-04-14 | 2015-09-02 | 招商局重工（江苏）有限公司 | Double-side double-arc synchronous butt welding method of medium-thickness plate of sliding box of self-elevating drilling platform |
| CN105798440A (en) * | 2016-05-27 | 2016-07-27 | 宝鸡石油钢管有限责任公司 | Pure titanium or titanium alloy/carbon steel laminar composite plate welding method |
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