CN103537776B - One-step forming straight welding method for stainless steel outer composite tubes - Google Patents
One-step forming straight welding method for stainless steel outer composite tubes Download PDFInfo
- Publication number
- CN103537776B CN103537776B CN201310490212.8A CN201310490212A CN103537776B CN 103537776 B CN103537776 B CN 103537776B CN 201310490212 A CN201310490212 A CN 201310490212A CN 103537776 B CN103537776 B CN 103537776B
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- Prior art keywords
- welding
- stainless steel
- pipe
- chromium content
- nickel
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Classifications
-
- 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
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/025—Seam welding; Backing means; Inserts for rectilinear seams
- B23K9/0253—Seam welding; Backing means; Inserts for rectilinear seams for the longitudinal seam of tubes
-
- 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
- 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
- B23K33/006—Filling of continuous seams for cylindrical workpieces
-
- 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
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Abstract
The invention provides a one-step forming straight welding method for stainless steel outer composite tubes. The method is characterized in that one-step welding is performed on shaped bevels of tube blanks, with welding wires having higher nickel and chromium content than stainless steel composite layers and solder having higher nickel and chromium content than the stainless steel composite layers, under the conditions: 0.5-2.5mm spacing of shaped bevels of the tube blanks, 13-23mm spacing H between a welding torch contact nozzle and a tube, 1.0-2.0mm distance h between the welding wires and the tube, 200-350A welding current, 20-50V welding voltage, 0.5-1.5m/min welding speed, and 10-30m/min feeding speed of welding wires. Finished welds of the stainless steel outer composite tubes are subjected to salt spray test for 125 hours, and the test results show no rust; the method is simpler than the existing methods, available for one-step forming, fewer welding wires and solder are used, and the cost is low.
Description
Technical field
The present invention relates to a kind of welding method, the method for the outer once-forming welding of multiple tube vertical masonry joint of especially a kind of Thin Specs (wall thickness≤7mm) stainless steel, belongs to welding technology field.
Technical background
Stainless steel composite material generally adopts carbon steel base layer material and stainless steel double layer material to be formed by method hot rolling method or Explosion composite method processing and fabricating.It has intensity and the processability of carbon steel base layer material, has again ornamental, the anti-corrosive properties of stainless steel material simultaneously.Stainless steel composite material can replace the high and rare chromium of valency, nickel metal material is applied to all trades and professions, and it is subject to the favor of people day by day as energy-conserving and environment-protective material.The composite structure tube of application stainless steel composite material processing and fabricating has the structural strength of carbon steel structure pipe, has again ornamental, the corrosion resistance of stainless steel structure pipe, progressively will replace pure stainless steel tube and carbon steel structure pipe.But the straight seam welding technical requirement of the outer multiple tube of stainless steel is very high, and weld seam chromium, nickel thinner ratio must be prevented in welding process excessive, and the problem causing weld corrosion resistance to reduce.Existing welding at least needs secondary welding just can complete, not only time-consuming, and increases welding rod, solder flux consumption, and welding cost is higher, and the outer multiple tube cladding thickness of Thin Specs (wall thickness≤7mm) stainless steel is relatively thin, and solder technology difficulty is higher.Though useful high frequency completes and once welds, weldering meets corrosion resisting property poor, easy corrosion, directly to affect the application of stainless steel multiple tube outward.
Summary of the invention
The object of the present invention is to provide the method for the outer once-forming welding of multiple tube vertical masonry joint of a kind of stainless steel, the outer composite plate weld intensity of stainless steel can be ensured by the present invention, the decay resistance of weld seam can be improved again.
The present invention is realized by following technical proposal: the method for the outer once-forming welding of multiple tube vertical masonry joint of a kind of stainless steel, it is characterized in that: with nickel, chromium content is greater than nickel in stainless steel cladding, the welding wire of chromium content, and nickel, chromium content is greater than nickel in stainless steel cladding, the solder flux of chromium content, under the following conditions: the shaping groove gap of pipe is 0.5 ~ 2.5 mm, resistance welding gun electric conducting nozzle is 13 ~ 23mm to the distance H of pipe, welding wire is 1.0 ~ 2.0mm to the distance h of pipe, welding current is 200 ~ 350A, weldingvoltage is 20 ~ 50V, speed of welding is 0.5 ~ 1.5m/min, solder wire convey speed is 10 ~ 30 m/min, the shaping groove of pipe is once welded.
Described gage of wire≤Φ 3.0mm.
Advantage of the present invention and effect: adopt such scheme, the weld seam of the outer multiple tube of the stainless steel obtained, by 125 hours salt spray tests, non-corroding phenomenon, welding method provided by the invention is more simple than existing methods, once just can be shaping, welding wire, solder flux consumption are few, and cost is low.
Accompanying drawing explanation
Fig. 1 is schematic diagram before pipe welding;
Fig. 2 is schematic diagram after pipe welding;
Fig. 3 is schematic diagram before square tubes soldering;
Fig. 4 is schematic diagram after square tubes soldering.
In figure, 1 is the carbon steel base layer of stainless steel composite material, and 2 is the outer stainless steel cladding of stainless steel composite material, and 3 is pipe groove gap, and 4 is the cross section of weld seam.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1
Weld the stainless steel compound circular pipe blank that the trade mark that 3mm is thick is SUS304+Q235, wherein carbon steel base layer thickness is 2.7mm, and outer field stainless steel double layer thickness is 0.3mm, and stainless steel double layer chemical composition is in table 1; Selection diameter is the CHW-308 stainless steel welding stick of Φ 1.0mm, and the chemical composition of this welding wire is in table 2, and solder flux is CHF260, and the chemical composition of this solder flux is in table 3;
And under the following conditions: the shaping groove gap of pipe is 0.8 ~ 1.5 mm, and resistance welding gun electric conducting nozzle is 13 ~ 23mm to the distance of pipe, and welding wire is 1.0 ~ 2.0mm to the distance of pipe, welding current is 300A, weldingvoltage is 35V, and speed of welding is 1.1m/min, and solder wire convey speed is 15 m/min, a welding fabrication is carried out to the shaping groove of pipe, as shown in Figure 1, Figure 2, weld seam through the salt spray test of 125 hours, non-corroding, weld seam through flattening test, flawless.
Embodiment 2
Weld the stainless steel composite square-tube base that the trade mark that 5mm is thick is SUS304+Q235, wherein carbon steel base layer thickness is 4.5mm, and outer field stainless steel double layer thickness is 0.5mm, and stainless steel double layer chemical composition is in table 1; Selection diameter is the CHW-308 stainless steel welding stick of Φ 1.0mm, and the chemical composition of this welding wire is in table 2, and solder flux is CHF260, and the chemical composition of this solder flux is in table 3;
And under the following conditions: the shaping groove gap of pipe is 0.8 ~ 1.5 mm, and resistance welding gun electric conducting nozzle is 13 ~ 23mm to the distance of pipe, and welding wire is 1.0 ~ 2.0mm to the distance of pipe, welding current is 330A, weldingvoltage is 45V, and speed of welding is 1m/min, and solder wire convey speed is 25 m/min, a welding fabrication is carried out to the shaping groove of pipe, as Fig. 3, Fig. 4, weld seam through the salt spray test of 170 hours, non-corroding, weld seam through flattening test, flawless.
Embodiment 3
Weld the stainless steel compound circular pipe blank that the trade mark that 7mm is thick is SUS304+Q235, wherein carbon steel base layer thickness is 6.3mm, and outer field stainless steel double layer thickness is 0.7mm, and stainless steel double layer chemical composition is in table 1; Selection diameter is the CHW-308L stainless steel welding stick of Φ 1.6mm, and the chemical composition of this welding wire is in table 4; Solder flux is CHF260, and the chemical composition of this solder flux is in table 3;
And under the following conditions: the shaping groove gap of pipe is 0.8 ~ 1.5 mm, and resistance welding gun electric conducting nozzle is 13 ~ 23mm to the distance of pipe, and welding wire is 1.5 ~ 2.5mm to the distance of pipe, welding current is 330A, weldingvoltage is 47V, and speed of welding is 0.9 m/min, and solder wire convey speed is 30 m/min, a welding fabrication is carried out to the shaping groove of pipe, as shown in Figure 1, Figure 2, weld seam through the salt spray test of 130 hours, non-corroding, weld seam through flattening test, flawless.
Claims (2)
1. the method for the outer once-forming welding of multiple tube vertical masonry joint of stainless steel, it is characterized in that: with nickel, chromium content is greater than nickel in stainless steel cladding, the welding wire of chromium content, and nickel, chromium content is greater than nickel in stainless steel cladding, the solder flux of chromium content, under the following conditions: the shaping groove gap of pipe is 0.5 ~ 2.5 mm, resistance welding gun electric conducting nozzle is 13 ~ 23mm to the distance H of pipe, welding wire is 1.0 ~ 2.0mm to the distance h of pipe, welding current is 200 ~ 350A, weldingvoltage is 20 ~ 50V, speed of welding is 0.5 ~ 1.5m/min, solder wire convey speed is 10 ~ 30 m/min, the shaping groove of pipe is once welded.
2. the method for the outer once-forming welding of multiple tube vertical masonry joint of stainless steel as claimed in claim 1, is characterized in that described gage of wire≤Φ 3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310490212.8A CN103537776B (en) | 2013-10-18 | 2013-10-18 | One-step forming straight welding method for stainless steel outer composite tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310490212.8A CN103537776B (en) | 2013-10-18 | 2013-10-18 | One-step forming straight welding method for stainless steel outer composite tubes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103537776A CN103537776A (en) | 2014-01-29 |
| CN103537776B true CN103537776B (en) | 2015-06-03 |
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| CN201310490212.8A Active CN103537776B (en) | 2013-10-18 | 2013-10-18 | One-step forming straight welding method for stainless steel outer composite tubes |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174976A (en) * | 2014-07-29 | 2014-12-03 | 云南昆钢新型复合材料开发有限公司 | One-time welding forming method for thin stainless steel composite materials |
| CN104607773B (en) * | 2014-12-11 | 2017-01-18 | 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 |
| CN111745269A (en) * | 2020-07-10 | 2020-10-09 | 首钢集团有限公司 | Double-sided submerged arc welding method for stainless steel composite plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326717A (en) * | 2000-06-02 | 2001-12-19 | 方明暖 | Method for producing three layer composite bottom stainless steel inner container |
| CN101653855A (en) * | 2009-08-12 | 2010-02-24 | 西安向阳航天材料股份有限公司 | Method for welding composited tube at bonding interface of carbon steel/stainless steel machinery |
| CN101982282A (en) * | 2010-11-16 | 2011-03-02 | 四川电力建设三公司 | Welding technology for butt welding of composite boards |
| CN102962563A (en) * | 2012-11-27 | 2013-03-13 | 浙江金洲管道工业有限公司 | Welding process for thin-walled composite steel pipe for pressure container |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006247673A (en) * | 2005-03-09 | 2006-09-21 | Hitachi Ltd | Method of welding procedure for pipe |
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- 2013-10-18 CN CN201310490212.8A patent/CN103537776B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326717A (en) * | 2000-06-02 | 2001-12-19 | 方明暖 | Method for producing three layer composite bottom stainless steel inner container |
| CN101653855A (en) * | 2009-08-12 | 2010-02-24 | 西安向阳航天材料股份有限公司 | Method for welding composited tube at bonding interface of carbon steel/stainless steel machinery |
| CN101982282A (en) * | 2010-11-16 | 2011-03-02 | 四川电力建设三公司 | Welding technology for butt welding of composite boards |
| CN102962563A (en) * | 2012-11-27 | 2013-03-13 | 浙江金洲管道工业有限公司 | Welding process for thin-walled composite steel pipe for pressure container |
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| CN103537776A (en) | 2014-01-29 |
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