CN105127564A - Submerged-arc welding process of stainless steel plate larger than 80mm in thickness - Google Patents
Submerged-arc welding process of stainless steel plate larger than 80mm in thickness Download PDFInfo
- Publication number
- CN105127564A CN105127564A CN201510484703.0A CN201510484703A CN105127564A CN 105127564 A CN105127564 A CN 105127564A CN 201510484703 A CN201510484703 A CN 201510484703A CN 105127564 A CN105127564 A CN 105127564A
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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
- B23K9/18—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
- B23K9/00—Arc welding or cutting
- B23K9/013—Arc cutting, gouging, scarfing or desurfacing
-
- 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
- B23K9/235—Preliminary treatment
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a submerged-arc welding process of a stainless steel plate larger than 80mm in thickness. The submerged-arc welding process comprises the following steps: beveling the steel plate, wherein symmetrical double U-shaped bevels are adopted, the angle of each bevel is 45 to 55 degrees, the truncated edge is 3mm to 5mm in thickness, and the clearance of the truncated edge is 2mm to 3mm; cleaning up the bevel of a weldment, 20-mm area in each side of the bevel and the surface of a to-be-welded position; selecting a welding wire which is 3mm to 4mm in diameter and is made from the same material of the weldment; baking a solder for 1 to 2 hours at the temperature of 300 to 400 DEG C before welding; during welding, performing bottom welding on the front surface of a metal plate by adopting gas shielded welding, subsequently filling a welding bead by adopting submerged-arc welding, turning over after filling the welding bead, removing the previous gas shielded welding bead from the reverse surface by adopting carbon arc gouging, exposing a submerged-arc welding bead in the front surface and then performing submerged-arc welding until the welding bead is filled. The welding process disclosed by the invention is simple and good in formation of the welding line; the obtained welded joint is good in quality and free of welding cracks and welding deformation.
Description
Technical field
The present invention relates to a kind of welding procedure, be specifically related to a kind of welding technique of submerged arc welding of stainless-steel sheet of more than 80mm thickness.
Background technology
The steel plate used in people's life is all generally medium and small thickness, but need at some Special section, special dimension the steel using heavy thickness, such as offshore oil production platform, offshore oil production platform plays a part to support all devices and derrick in development of fields engineering, belong to the large-scale component continuing to bear weight, its importance is self-evident.Meanwhile, the condition of work of offshore oil production platform is also very harsh, and active time crosses over the four seasons, and working environment difference variation is comparatively large, more will stand the test of low temperature in the winter time.Along with the raising of steel strength, require also to improve to the welding quality of steel, welding point is the important component part of ocean structure, and its quality directly has influence on safety in utilization and the reliability of ocean structure thereupon.Steel plate thickness is larger, causes welding cold crack sensitivity large and postwelding delayed crack sensitiveness is strong.Be difficult to the quality and performance guaranteeing welding point in welding practice, the problems such as the low strength of such as welding point, can not meet the requirement of current industry.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide the welding point that a kind of welding quality is intact, the welding technique of submerged arc welding of the stainless-steel sheet of more than the 80mm thickness of welding crackle, welding distortion.
For achieving the above object, the technical solution used in the present invention is as follows:
A welding technique of submerged arc welding for the stainless-steel sheet of more than 80mm thickness, is characterized in that, comprises the steps:
(1) by steel plate bevel, adopt symmetrical double-U-shaped groove, bevel angle is 45 °-55 °, and root face height is 3-5mm, root face gap 2-3mm;
(2) the surperficial iron rust, oxide skin, greasy dirt etc. in butt-welding fitting groove and groove both sides each 20mm region and position to be welded are cleaned out, and prevent the generation of pore;
(3) selection is identical with weldment material, and diameter is the welding wire of 3-4mm, and before welding solder flux is cured 1-2h at 300-400 DEG C;
(4) adjustment welding condition is: welding current 480-600A, weldingvoltage 32-38V, speed of welding 350-550mm/min, and weld heat input is 20-45kJ/cm;
(5) during welding; first gas shielded arc welding is used to carry out bottoming welding in the front of metallic plate; then submerged-arc welding filler pass is adopted; fill turn-over after welding bead; carbon arc gouge is utilized to remove previous gas shielded arc welding welding bead from the negative; expose the submerged arc welding bead in front, and then carry out submerged arc welding, until fill up welding bead.
Further, welding machine connection is straight polarity direct current.
Further, described front first weld seam weld heat input is 20-25KJ/cm, and reverse side first weld seam weld heat input is 35-40KJ/cm.
Beneficial effect of the present invention:
Welding procedure of the present invention is simple, and appearance of weld is good, and the quality of weld joint obtained is intact, and welding crackle, welding are out of shape.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated.
Embodiment:
The welding technique of submerged arc welding of the stainless-steel sheet of a kind of more than 80mm thickness of the present invention, is characterized in that, comprise the steps:
(1) by steel plate bevel, adopt symmetrical double-U-shaped groove, bevel angle is 45 °-55 °, and root face height is 3-5mm, root face gap 2-3mm;
(2) the surperficial iron rust, oxide skin, greasy dirt etc. in butt-welding fitting groove and groove both sides each 20mm region and position to be welded are cleaned out, and prevent the generation of pore;
(3) selection is identical with weldment material, and diameter is the welding wire of 3-4mm, and before welding solder flux is cured 1-2h at 300-400 DEG C;
(4) adjustment welding condition is: welding current 480-600A, weldingvoltage 32-38V, speed of welding 350-550mm/min, and weld heat input is 20-45kJ/cm;
(5) during welding; first gas shielded arc welding is used to carry out bottoming welding in the front of metallic plate; then submerged-arc welding filler pass is adopted; fill turn-over after welding bead; carbon arc gouge is utilized to remove previous gas shielded arc welding welding bead from the negative; expose the submerged arc welding bead in front, and then carry out submerged arc welding, until fill up welding bead.
Further, welding machine connection is straight polarity direct current.
Further, described front first weld seam weld heat input is 20-25KJ/cm, and reverse side first weld seam weld heat input is 35-40KJ/cm.
Claims (3)
1. a welding technique of submerged arc welding for the stainless-steel sheet of more than 80mm thickness, is characterized in that, comprises the steps:
(1) by steel plate bevel, adopt symmetrical double-U-shaped groove, bevel angle is 45 °-55 °, and root face height is 3-5mm, root face gap 2-3mm;
(2) the surperficial iron rust, oxide skin, greasy dirt etc. in butt-welding fitting groove and groove both sides each 20mm region and position to be welded are cleaned out, and prevent the generation of pore;
(3) selection is identical with weldment material, and diameter is the welding wire of 3-4mm, and before welding solder flux is cured 1-2h at 300-400 DEG C;
(4) adjustment welding condition is: welding current 480-600A, weldingvoltage 32-38V, speed of welding 350-550mm/min, and weld heat input is 20-45kJ/cm;
(5) during welding; first gas shielded arc welding is used to carry out bottoming welding in the front of metallic plate; then submerged-arc welding filler pass is adopted; fill turn-over after welding bead; carbon arc gouge is utilized to remove previous gas shielded arc welding welding bead from the negative; expose the submerged arc welding bead in front, and then carry out submerged arc welding, until fill up welding bead.
2. the welding technique of submerged arc welding of the stainless-steel sheet of a kind of more than 80mm thickness according to claim 1, is characterized in that: welding machine connection is straight polarity direct current.
3. the welding technique of submerged arc welding of the stainless-steel sheet of a kind of more than 80mm thickness according to claim 1, is characterized in that: described front first weld seam weld heat input is 20-25KJ/cm, and reverse side first weld seam weld heat input is 35-40KJ/cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510484703.0A CN105127564A (en) | 2015-08-10 | 2015-08-10 | Submerged-arc welding process of stainless steel plate larger than 80mm in thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510484703.0A CN105127564A (en) | 2015-08-10 | 2015-08-10 | Submerged-arc welding process of stainless steel plate larger than 80mm in thickness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105127564A true CN105127564A (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510484703.0A Pending CN105127564A (en) | 2015-08-10 | 2015-08-10 | Submerged-arc welding process of stainless steel plate larger than 80mm in thickness |
Country Status (1)
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| CN (1) | CN105127564A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397319A (en) * | 2015-12-15 | 2016-03-16 | 安徽伟宏钢结构集团股份有限公司 | Welding process for steel bridge structure |
| CN105665897A (en) * | 2016-03-24 | 2016-06-15 | 鲁西工业装备有限公司 | Duplex stainless steel submerged arc automatic welding method and application thereof |
| CN107127430A (en) * | 2017-05-12 | 2017-09-05 | 上海森松新能源设备有限公司 | Welding method of pressure vessel composite plate |
| CN108176952A (en) * | 2018-01-17 | 2018-06-19 | 山东钢铁集团日照有限公司 | A kind of manufacturing method of easily super-thick steel plate |
| CN109352143A (en) * | 2018-10-29 | 2019-02-19 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of stainless steel hot-rolling coil welding method |
| CN117483920A (en) * | 2023-12-06 | 2024-02-02 | 青岛兰石重型机械设备有限公司 | Full-penetration welding method for composite plate cylinder assembly welding support ring |
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|---|---|---|---|---|
| SU1380885A1 (en) * | 1985-11-10 | 1988-03-15 | Ждановский металлургический институт | Method of unilateral arc welding of double-layer steels |
| CN101152689A (en) * | 2006-09-28 | 2008-04-02 | 上海宝冶工程技术公司 | Renovation technology for ladle |
| CN102581428A (en) * | 2012-02-22 | 2012-07-18 | 象王重工股份有限公司 | Ultra-thick forge piece and thin plate butt welding process |
| CN103447672A (en) * | 2013-08-16 | 2013-12-18 | 江苏省沙钢钢铁研究院有限公司 | A Submerged Arc Welding Process of Large Thickness Low Temperature Steel Plate with Yield Strength 690MPa |
| CN103586566A (en) * | 2013-10-23 | 2014-02-19 | 中国石油天然气集团公司 | Semi-automatic argon-arc welding method for bimetal composite pipes |
| CN103801804A (en) * | 2014-03-06 | 2014-05-21 | 中冶建筑研究总院有限公司 | CO2 gas shielded welding process for constructional high-performance structural steel Q550GJ |
| CN104209625A (en) * | 2014-09-16 | 2014-12-17 | 武汉一冶钢结构有限责任公司 | Q460 steel thick plate welding process |
-
2015
- 2015-08-10 CN CN201510484703.0A patent/CN105127564A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1380885A1 (en) * | 1985-11-10 | 1988-03-15 | Ждановский металлургический институт | Method of unilateral arc welding of double-layer steels |
| CN101152689A (en) * | 2006-09-28 | 2008-04-02 | 上海宝冶工程技术公司 | Renovation technology for ladle |
| CN102581428A (en) * | 2012-02-22 | 2012-07-18 | 象王重工股份有限公司 | Ultra-thick forge piece and thin plate butt welding process |
| CN103447672A (en) * | 2013-08-16 | 2013-12-18 | 江苏省沙钢钢铁研究院有限公司 | A Submerged Arc Welding Process of Large Thickness Low Temperature Steel Plate with Yield Strength 690MPa |
| CN103586566A (en) * | 2013-10-23 | 2014-02-19 | 中国石油天然气集团公司 | Semi-automatic argon-arc welding method for bimetal composite pipes |
| CN103801804A (en) * | 2014-03-06 | 2014-05-21 | 中冶建筑研究总院有限公司 | CO2 gas shielded welding process for constructional high-performance structural steel Q550GJ |
| CN104209625A (en) * | 2014-09-16 | 2014-12-17 | 武汉一冶钢结构有限责任公司 | Q460 steel thick plate welding process |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397319A (en) * | 2015-12-15 | 2016-03-16 | 安徽伟宏钢结构集团股份有限公司 | Welding process for steel bridge structure |
| CN105665897A (en) * | 2016-03-24 | 2016-06-15 | 鲁西工业装备有限公司 | Duplex stainless steel submerged arc automatic welding method and application thereof |
| CN107127430A (en) * | 2017-05-12 | 2017-09-05 | 上海森松新能源设备有限公司 | Welding method of pressure vessel composite plate |
| CN108176952A (en) * | 2018-01-17 | 2018-06-19 | 山东钢铁集团日照有限公司 | A kind of manufacturing method of easily super-thick steel plate |
| CN109352143A (en) * | 2018-10-29 | 2019-02-19 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of stainless steel hot-rolling coil welding method |
| CN109352143B (en) * | 2018-10-29 | 2021-05-11 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of stainless steel hot-rolled coil welding method |
| CN117483920A (en) * | 2023-12-06 | 2024-02-02 | 青岛兰石重型机械设备有限公司 | Full-penetration welding method for composite plate cylinder assembly welding support ring |
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Application publication date: 20151209 |
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