CN104174976A - One-time welding forming method for thin stainless steel composite materials - Google Patents
One-time welding forming method for thin stainless steel composite materials Download PDFInfo
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- CN104174976A CN104174976A CN201410365959.5A CN201410365959A CN104174976A CN 104174976 A CN104174976 A CN 104174976A CN 201410365959 A CN201410365959 A CN 201410365959A CN 104174976 A CN104174976 A CN 104174976A
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- welding
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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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
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- Mechanical Engineering (AREA)
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- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
The invention provides a one-time welding forming method for thin stainless steel composite materials. The method comprises the steps as follows: two thin stainless steel composite materials are flatly placed, and an interval between every two to-be-welded ends is kept in a range from 0 to 3.0 mm; the welding wire extending length is controlled in a range from 8 mm to 30 mm; under the conditions that the welding current is 80-350 A, the welding voltage is 18-50 V, the welding speed is 0.3-2.0 m/min, the welding wire feeding speed is 4-30 m/min and protective gas exists, double-sided forming of the to-be-welded ends of the two composite thin stainless steel materials can be achieved through one-time welding, and welding seams are subjected to a neutral salt spray test for 1,500 hours and are free of corrosion; the tensile strength of the welding seams is higher than a base material; and the welding seams are free of cracks. Compared with the conventional method, the one-time welding forming method for the thin stainless steel composite materials is simpler and has lower cost than other welding methods while the corrosion resistance is good.
Description
Technical field
The present invention relates to a kind of welding method, especially a kind of method that once welding just can be shaped that two-sided fusing is shaped to vertical masonry joint, ultra-narrow gap, the single-sided welding of thin specification (thickness≤7mm) stainless steel composite material, belongs to stainless steel composite material welding technology field.
Technical background
Stainless steel composite material is the double-layer composite material forming by hot rolling composite algorithm or blast composite algorithm processing and fabricating with carbon steel base layer material and stainless steel double layer material.With the sheet material of stainless steel composite material processing and fabricating, there is intensity and the processability of carbon steel base layer material, there are again ornamental, the anti-corrosive properties of stainless steel material simultaneously; With tubing, the structural shape etc. of stainless steel composite material processing and fabricating, not only there is the structural strength of carbon steel structure pipe, also there is ornamental, the corrosion resistance of stainless steel structure pipe.Therefore, stainless steel composite material can replace the high and rare chromium of valency, nickel metal material to be applied to all trades and professions, and it is subject to people's favor day by day as energy-conserving and environment-protective material, and will progressively replace the application of pure stainless steel and carbon steel.But the straight seam welding technical requirement of thin specification (being thickness≤7mm) stainless steel composite material is very high, in welding process, must prevent chromium in weld seam, nickel because of thinner ratio excessive, and the problem that causes weld seam corrosion resistance to reduce.Existing solder technology is in the time welding the vertical masonry joint of thin specification stainless steel composite material simultaneously, at least need to weld secondary, first carry out bottoming welding once with carbon steel or welding wire, carry out a layer cover welding with stainless steel electrode or welding wire again, at least secondary welding, just can reach corrosion proof requirement, not only takes a lot of work, time-consuming, and increase welding material consumption, cause welding cost higher.The multiple layer thickness of the stainless steel composite material of especially thin specification is relatively thin, and welding difficulty is higher.Therefore, must be improved prior art.
Summary of the invention
A kind of method that the object of the present invention is to provide thin specification stainless steel composite material to be once welded into, the method can once be welded into vertical masonry joint, the ultra-narrow gap of the thin specification stainless steel composite material of thickness≤7mm, single-side welding double-side forming simultaneously, the weld strength of the outer composite of stainless steel can be ensured, the decay resistance of weld seam can be ensured again.
The present invention realizes by following technical proposal: a kind of method that thin specification stainless steel composite material is once welded into, is characterized in that through the following step:
A, two thin specification stainless steel composite materials are kept flat, make to treat between two that the gap between welding end keeps 0～3.0mm;
B, control electrode extension are 8～30mm;
C, be 80～350A at welding current, weldingvoltage is 18～50V, and speed of welding is 0.3～2.0m/min, and solder wire convey speed is 4～30m/min, have under protective gas condition, the welding end for the treatment of of two thin specification stainless steel composite materials is once welded; Described protective gas is following mist: the volume ratio > 80% of argon gas (Ar) or helium (He), carbon dioxide (CO
2) or oxygen (O
2) volume ratio < 20%, pressure is 2 ~ 15MPa.
Described welding wire selects nickel, chromium content to be greater than the welding wire of nickel in stainless steel double layer, chromium content, gage of wire≤Φ 3.0mm.
The present invention passes through weldingvoltage, welding current, speed of welding, wire feed rate, component of weld wire, electrode extension, the isoparametric control of protective atmosphere and pressure and mutually coupling, realizing thin specification stainless steel composite material is once welded into, and single-side welding double-side forming, select nickel simultaneously, chromium content is greater than nickel in stainless steel double layer, the welding wire of chromium content, make to weld the weld seam of the stainless steel composite material obtaining, after surface treatment, taking GB GB/T 10125-1997 " artificial atmosphere corrosion test salt spray test " as standard, butt welded seam carries out neutral salt spray test test, weld seam was through the neutral salt spray test of 1500 hours, non-corroding, weld seam tensile strength is tested by GB GB/T228.1-2010 " metal material stretching test Part I: room temperature test method ", and weld seam tensile strength is higher than mother metal, curved and excurvation is tested by GB GB/T232-2010 " bend test of metal materials method " in weld seam, weld seam flawless.Welding method provided by the invention is simpler than existing methods, and once welding just can moulding, adds that protective atmosphere is gas, to reach corrosion resistance lower compared to the cost of other welding in good.
Brief description of the drawings
Fig. 1 is schematic diagram before stainless steel composite material welding;
Fig. 2 is schematic diagram after stainless steel composite material welding;
Fig. 3 is the multiple layer schematic diagram after welding forming of the present invention;
Fig. 4 is the basic unit's schematic diagram after welding forming of the present invention;
Fig. 5 is the seam cross-section schematic diagram after welding forming of the present invention.
In figure, 1 carbon steel base layer that is stainless steel composite material, the 2 stainless steel double layers that are stainless steel composite material, 3 is groove gap, 4 cross sections that are weld seam.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1
Thick to 1.0mm, the stainless steel composite material that the trade mark is SUS304+Q235 welds, and wherein carbon steel base layer thickness is 0.8mm, and outer field stainless steel double layer thickness is 0.2mm, and stainless steel double layer chemical composition is in table 1;
Selecting diameter is the CHM-308 stainless steel welding stick of Φ 1.0mm, and the chemical composition of this welding wire is in table 2, and protective atmosphere is argon gas and carbon dioxide;
Concrete welding is as follows:
A, two thick stainless steel composite materials of 1.0mm are set level, kept treating that the gap between welding end is 1mm, as Fig. 1;
B, be 8mm by electrode extension control;
C, be 80A at welding current; weldingvoltage is 18V; speed of welding is 0.3m/min, and solder wire convey speed is 4m/min, has under protective gas condition; the welding end for the treatment of to the thick stainless steel composite material of two 1.0mm is once welded; and single-side welding double-side forming, as Fig. 2, described protective gas is argon gas and carbon dioxide; wherein: the volume ratio of argon gas (Ar) is 81%, carbon dioxide (CO
2) volume ratio be 19%, pressure is 2 ~ 8MPa.
Taking GB GB/T 10125-1997 " artificial atmosphere corrosion test salt spray test ", as standard, butt welded seam carries out neutral salt spray test test, and weld seam is through the neutral salt spray test of 1500 hours, non-corroding; By GB GB/T228.1-2010 " metal material stretching test Part I: room temperature test method ", drawn test, tensile strength is 500MPa, is greater than mother metal; By GB GB/T232-2010 " bend test of metal materials method ", through interior curved and excurvation pass the test, weld seam flawless.
For first using carbon steel backing welding, then the welding procedure of carrying out the weldering of stainless steel capping, thickness is 1.0mm stainless steel composite material, cannot carry out carbon steel bottoming welding, if carry out carbon steel backing welding, then carry out the weldering of stainless steel capping, weld reinforcement is higher, and weld seam corrosion resistance is bad.
Embodiment 2
Thick to 3mm, the stainless steel composite material that the trade mark is SUS304+Q235 welds, and 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; Selecting diameter is the CHM-308 stainless steel welding stick of Φ 2.0mm, and the chemical composition of this welding wire is in table 2, and protective atmosphere is helium and oxygen;
Concrete welding is as follows:
A, two thick stainless steel composite materials of 3mm are set level, kept treating that the gap between welding end is 0mm;
B, be 15mm by electrode extension control;
C, be 200A at welding current; weldingvoltage is 30V; speed of welding is 1m/min; solder wire convey speed is 15m/min, has under protective gas condition, and the welding end for the treatment of of the thick stainless steel composite material of two 3mm is once welded; and single-side welding double-side forming; described protective gas is the mist of helium and oxygen, wherein: the volume ratio of helium (He) is 90%, oxygen (O
2) volume ratio be 10%,, pressure is 5 ~ 10MPa.
Taking GB GB/T 10125-1997 " artificial atmosphere corrosion test salt spray test " as standard, butt welded seam carries out neutral salt spray test test, by GB GB/T228.1-2010 " metal material stretching test Part I: room temperature test method ", drawn test, tensile strength is 500MPa, is greater than mother metal; By GB GB/T232-2010 " bend test of metal materials method ", through interior curved and excurvation pass the test, weld seam flawless.
For first using carbon steel backing welding, then the welding procedure of carrying out the weldering of stainless steel capping, thickness is 3.0mm stainless steel composite material, more with respect to welding sequence and the man-hour of welding procedure of the present invention, cost is high.
Embodiment 3
Thick to 5mm, the stainless steel double material that the trade mark is SUS304+Q235 welds, and 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; Selecting diameter is the CHM-308L stainless steel welding stick of Φ 1.5mm, and the chemical composition of this welding wire is in table 3, and protective atmosphere is helium and carbon dioxide;
Concrete welding is as follows:
A, the welding end for the treatment of of two thin specification stainless steel composite materials is set level, kept treating that the gap between welding end is 3mm;
B, be 30mm by electrode extension control;
C, be 350A at welding current; weldingvoltage is 50V; speed of welding is 2m/min; solder wire convey speed is 30m/min; have under protective gas condition, the welding end for the treatment of of two thin specification stainless steel composite materials is once welded, described protective gas is the mist of helium and carbon dioxide; wherein: the volume ratio of helium (Ar) is 85%, carbon dioxide (CO
2) volume ratio be 15%, pressure is 7 ~ 12MPa.
Taking GB GB/T 10125-1997 " artificial atmosphere corrosion test salt spray test " as standard, butt welded seam carries out neutral salt spray test test, by GB GB/T228.1-2010 " metal material stretching test Part I: room temperature test method ", drawn test, tensile strength is 495MPa, is greater than mother metal; By GB GB/T232-2010 " bend test of metal materials method ", through interior curved and excurvation pass the test, weld seam flawless.
For first using carbon steel backing welding, then the welding procedure of carrying out the weldering of stainless steel capping, thickness is 5.0mm stainless steel composite material, many with respect to welding sequence and the man-hour of welding procedure of the present invention, cost is high.
Embodiment 4
The stainless steel composite material that is SUS304+Q235 to the thick trade mark of 7mm welds, and 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; Selecting diameter is the CHW-309 stainless steel welding stick of Φ 3.0mm, and the chemical composition of this welding wire is in table 4; Protective atmosphere is argon gas and oxygen;
Concrete welding is as follows:
A, the welding end for the treatment of of two thin specification stainless steel composite materials is set level, kept treating that the gap between welding end is 2.5mm;
B, be 25mm by electrode extension control;
C, be 300A at welding current; weldingvoltage is 40V; speed of welding is 1.5m/min; solder wire convey speed is 25m/min; have under protective gas condition, the welding end for the treatment of of two thin specification stainless steel composite materials is once welded, described protective gas is the mist of argon gas and oxygen; wherein: the volume ratio of argon gas (He) is 95%, oxygen (O
2) volume ratio be 5%, pressure is 9 ~ 15MPa.
Taking GB GB/T 10125-1997 " artificial atmosphere corrosion test salt spray test " as standard, butt welded seam carries out neutral salt spray test test, by GB GB/T228.1-2010 " metal material stretching test Part I: room temperature test method ", drawn test, tensile strength is 480MPa, is greater than mother metal; By GB GB/T232-2010 " bend test of metal materials method ", through interior curved and excurvation pass the test, weld seam flawless.
For first using carbon steel backing welding, then the welding procedure of carrying out the weldering of stainless steel capping, thickness is 7.0mm stainless steel composite material, many with respect to welding sequence and the man-hour of welding procedure of the present invention, cost is high.
Table 1 stainless steel composite material multiple layer chemical composition (%)
| C | Mn | Si | S | P | Cr | Ni | N |
| 0.058 | 1.26 | 0.39 | 0.029 | 0.028 | 18.14 | 8.02 | 0.0520 |
Table 2 CHM-308 stainless steel welding stick chemical composition (%)
| C | Mn | Si | S | P | Cr | Ni | Mo | Cu |
| 0.05 | 1.79 | 0.48 | 0.013 | 0.022 | 19.72 | 9.40 | 0.008 | 0.09 |
Table 3 CHM-308L stainless steel welding stick chemical composition (%)
| C | Mn | Si | S | P | Cr | Ni | Mo | Cu |
| 0.024 | 1.72 | 0.48 | 0.010 | 0.018 | 19.76 | 9.83 | 0.010 | 0.09 |
Table 4 CHM-309 stainless steel welding stick chemical composition (%)
| C | Mn | Si | S | P | Cr | Ni | Mo | Cu |
| 0.06 | 2.05 | 0.40 | 0.011 | 0.020 | 23.83 | 13.26 | 0.007 | 0.06 |
Claims (2)
1. a thin specification stainless steel composite material forming a solder method, is characterized in that through the following step:
A, two thin specification stainless steel composite materials are kept flat, make to treat between two that the gap between welding end keeps 0～3.0mm;
B, control electrode extension are 8～30mm;
C, be 80～350A at welding current, weldingvoltage is 18～50V, and speed of welding is 0.3～2.0m/min, and solder wire convey speed is 4～30m/min, have under protective gas condition, the welding end for the treatment of of two thin specification stainless steel composite materials is once welded; Described protective gas is following mist: the volume ratio > 80% of argon gas (Ar) or helium (He), carbon dioxide (CO
2) or oxygen (O
2) volume ratio < 20%, pressure is 2 ~ 15MPa.
2. thin specification stainless steel composite material forming a solder method as claimed in claim 1, it is characterized in that described for welding wire nickel, chromium content be greater than the welding wire of nickel in stainless steel double layer, chromium content, gage of wire≤Φ 3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410365959.5A CN104174976A (en) | 2014-07-29 | 2014-07-29 | One-time welding forming method for thin stainless steel composite materials |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410365959.5A CN104174976A (en) | 2014-07-29 | 2014-07-29 | One-time welding forming method for thin stainless steel composite materials |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109352144A (en) * | 2018-12-07 | 2019-02-19 | 中船重工（武汉）船舶与海洋工程装备设计有限公司 | A kind of welding method and device of thin-wall construction |
| CN115229306A (en) * | 2022-07-14 | 2022-10-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for improving bending performance of QStE pickled plate welding joint |
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| CN102615392A (en) * | 2012-04-13 | 2012-08-01 | 中国海洋石油总公司 | Welding groove process of mechanical bimetallic composite marine pipe |
| CN103537776A (en) * | 2013-10-18 | 2014-01-29 | 云南昆钢新型复合材料开发有限公司 | One-step forming straight welding method for stainless steel outer composite tubes |
| CN103586567A (en) * | 2013-11-14 | 2014-02-19 | 上海沈达空调配件厂（普通合伙） | Method for fusion covering of shaped metal clad plate by adoption of gas shield welding manner |
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2014
- 2014-07-29 CN CN201410365959.5A patent/CN104174976A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546267A (en) * | 2003-12-08 | 2004-11-17 | 西安交通大学 | Welding method for ultra-thin composite layer low-carbon steel - austenitic stainless steel multiple tube adaptor |
| US20060201915A1 (en) * | 2005-03-09 | 2006-09-14 | Takeshi Obana | Welding process for stainless steel piping |
| CN102615392A (en) * | 2012-04-13 | 2012-08-01 | 中国海洋石油总公司 | Welding groove process of mechanical bimetallic composite marine pipe |
| CN103537776A (en) * | 2013-10-18 | 2014-01-29 | 云南昆钢新型复合材料开发有限公司 | One-step forming straight welding method for stainless steel outer composite tubes |
| CN103586567A (en) * | 2013-11-14 | 2014-02-19 | 上海沈达空调配件厂（普通合伙） | Method for fusion covering of shaped metal clad plate by adoption of gas shield welding manner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109352144A (en) * | 2018-12-07 | 2019-02-19 | 中船重工（武汉）船舶与海洋工程装备设计有限公司 | A kind of welding method and device of thin-wall construction |
| CN115229306A (en) * | 2022-07-14 | 2022-10-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for improving bending performance of QStE pickled plate welding joint |
| CN115229306B (en) * | 2022-07-14 | 2024-02-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for improving bending performance of welded joint of QSTE pickling plate |
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