CN111958091A - Welding method for welding copper cooling wall without preheating - Google Patents
Welding method for welding copper cooling wall without preheating Download PDFInfo
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- CN111958091A CN111958091A CN202010774213.5A CN202010774213A CN111958091A CN 111958091 A CN111958091 A CN 111958091A CN 202010774213 A CN202010774213 A CN 202010774213A CN 111958091 A CN111958091 A CN 111958091A
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- welding
- preheating
- cooling wall
- copper cooling
- weld
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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
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
- B23K9/32—Accessories
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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 welding method for welding a copper cooling wall without preheating, which adopts helium arc welding to weld the copper cooling wall and red copper, can successfully weld without preheating a welding piece, and adopts a water-cooled argon arc welding gun with WSE-500S as a welding machine, HS201 as a welding wire, HJ301 as a welding flux and the like. The method for welding the large red copper is simple and practical, the preheating of the welding piece is not needed, the special treatment of the welding surface is not needed, and only the welding position needs to be polished into metallic luster. The welding method has the advantages of wide applicability in the daily maintenance process, high welding quality, attractive weld forming and strong operability.
Description
Technical Field
The invention relates to a welding method for welding a copper cooling wall without preheating.
Background
Helium arc welding is a gas shielded welding mode which adopts a tungsten electrode as an electrode material, forms closed protective gas flow around an electric arc between the electrode and a workpiece by using helium sprayed from a nozzle and prevents a tungsten electrode welding wire and a welding body from being oxidized. Helium arc welding has the following advantages: helium is inert gas, does not decompose at high temperature, does not react with weld metal, is insoluble in liquid metal, and is a high-quality welding method with the best gas protection effect. Helium has an ionization potential and a thermal conductivity which is obviously higher than that of argon, so that the thermal power of helium arc welding acting on a weldment is nearly doubled compared with that of argon arc welding under the same current condition. The helium arc welding is adopted to weld the copper cooling wall and the red copper, and the welding can be successfully carried out without preheating a welding piece. The welding seam has high quality and beautiful appearance. The helium arc welding adopts open arc operation, has good arc extinguishing visibility and is convenient to observe and operate. Is suitable for all-position welding operation. The welding efficiency is high. Besides welding ferrous metal, it can be used for welding non-ferrous metals of stainless steel, lead and copper, etc. and their alloys.
The root of the joint of the copper cooling wall and the water pipe of the furnace A of the second blast furnace branch of the eight-steel iron and steel plant is broken and leaks water, (the material of the copper cooling wall is T1, the thickness is 105 mm, the material of the water pipe is TU2, the wall thickness of the pipe is 10 mm, and the diameter is 76 mm), the normal operation of the blast furnace production is directly influenced, the problem of water leakage is solved without a good method, and most of treatment methods are to control the water inflow of industrial water, so that the water leakage into the furnace is controlled, and the problem of water leakage cannot be fundamentally solved. If the water leakage is enlarged, the water pipe of the water leakage cooling wall is detached and grouting treatment is carried out. If welding is carried out on site, the whole fracture part needs to be heated to 650 ℃ by 400-. Only after the furnace is shut down, the whole furnace is removed, sent to a manufacturer for welding repair, and then integrally installed in the furnace, and the disassembly and the assembly can be completed within 10 days.
Disclosure of Invention
The invention aims to provide a welding method for welding a copper cooling wall without preheating, which can solve the problem of difficulty in welding large red copper parts.
The invention aims to realize the welding method for welding the copper cooling wall without preheating, helium arc welding is adopted to weld the copper cooling wall and red copper, the welding can be successfully carried out without preheating a workpiece, the welding machine selects WSE-500S, a welding wire selects HS201, a welding flux selects HJ301, and a water-cooled argon arc welding gun is adopted.
Compared with helium and argon gas characteristics, the ionization potential and the thermal conductivity of helium gas are obviously higher than those of argon gas, so that the thermal power of helium arc welding acting on a weldment is nearly doubled compared with that of argon arc welding under the same current condition. The helium arc welding is adopted to weld the copper cooling wall and the red copper, and the welding can be successfully carried out without preheating a welding piece. The welding machine selects WSE-500S, the welding wire selects HS201, the welding flux selects HJ301, and a water-cooled argon arc welding gun is adopted. Welding process parameters are reasonably selected according to the thickness of a weldment, a welded seam is attractive after welding, leakage does not exist when the welded seam is pressed to be 0.7MPa, the use requirement is met, and the expected effect is achieved.
The method for welding the large red copper is simple and practical, the preheating of the welding piece is not needed, the special treatment of the welding surface is not needed, and only the welding position needs to be polished into metallic luster. The welding method has the advantages of wide applicability in the daily maintenance process, high welding quality, attractive weld forming and strong operability. Can weld thick metal plates, non-ferrous metals such as stainless steel, aluminum and the like and alloys thereof. The maintenance efficiency is high, the labor condition of a welder is better, and the effect of welding red copper and stainless steel is better because the preheating of a welding piece is not needed. The method provides powerful guarantee for normal operation of equipment, is suitable for all-position welding, solves the problem of difficulty in heating the copper cooling wall of the blast furnace, has considerable application prospect, saves energy, reduces consumption, reduces cost and improves efficiency.
Detailed Description
A welding method for welding copper cooling wall without preheating adopts helium arc welding to weld copper cooling wall and red copper, and can successfully weld without preheating a welding piece, wherein the welding machine selects WSE-500S, the welding wire selects HS201, the welding flux selects HJ301, and a water-cooled argon arc welding gun is adopted.
Claims (1)
1. A welding method for welding copper cooling wall without preheating is characterized in that helium arc welding is adopted to weld the copper cooling wall with red copper, welding can be successfully carried out without preheating a workpiece, the welding machine is selected from WSE-500S, a welding wire is selected from HS201, a welding flux is selected from HJ301, and a water-cooled argon arc welding gun is adopted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010774213.5A CN111958091A (en) | 2020-08-04 | 2020-08-04 | Welding method for welding copper cooling wall without preheating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010774213.5A CN111958091A (en) | 2020-08-04 | 2020-08-04 | Welding method for welding copper cooling wall without preheating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111958091A true CN111958091A (en) | 2020-11-20 |
Family
ID=73363831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010774213.5A Pending CN111958091A (en) | 2020-08-04 | 2020-08-04 | Welding method for welding copper cooling wall without preheating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111958091A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445044A (en) * | 2003-04-17 | 2003-10-01 | 哈尔滨工业大学 | Method for red copper transition welding without preheating metal alloy |
| CN1672851A (en) * | 2005-04-13 | 2005-09-28 | 渤海船舶重工有限责任公司 | Double-side forming single-side butt welding method for thick-wall red copper pipe |
| CN101190479A (en) * | 2006-11-22 | 2008-06-04 | 上海斯米克焊材有限公司 | Welding wire for TIG welding with welding flux cortex |
| CN101323039A (en) * | 2008-07-22 | 2008-12-17 | 渤海船舶重工有限责任公司 | Non-prewarming welding method for thick-wall red copper and low-carbon steel dissimilar metal material |
| CN101323044A (en) * | 2008-07-22 | 2008-12-17 | 渤海船舶重工有限责任公司 | Thick-wall red copper and austenitic stainless steel non-prewarming arc melting and welding method |
| CN102699496A (en) * | 2012-05-23 | 2012-10-03 | 中国化学工程第三建设有限公司 | Welding process method of brass H62 |
| CN103801805A (en) * | 2014-01-21 | 2014-05-21 | 马鞍山马钢设备安装工程有限公司 | Sleeve welding repair method in blast-furnace tuyere |
-
2020
- 2020-08-04 CN CN202010774213.5A patent/CN111958091A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445044A (en) * | 2003-04-17 | 2003-10-01 | 哈尔滨工业大学 | Method for red copper transition welding without preheating metal alloy |
| CN1672851A (en) * | 2005-04-13 | 2005-09-28 | 渤海船舶重工有限责任公司 | Double-side forming single-side butt welding method for thick-wall red copper pipe |
| CN101190479A (en) * | 2006-11-22 | 2008-06-04 | 上海斯米克焊材有限公司 | Welding wire for TIG welding with welding flux cortex |
| CN101323039A (en) * | 2008-07-22 | 2008-12-17 | 渤海船舶重工有限责任公司 | Non-prewarming welding method for thick-wall red copper and low-carbon steel dissimilar metal material |
| CN101323044A (en) * | 2008-07-22 | 2008-12-17 | 渤海船舶重工有限责任公司 | Thick-wall red copper and austenitic stainless steel non-prewarming arc melting and welding method |
| CN102699496A (en) * | 2012-05-23 | 2012-10-03 | 中国化学工程第三建设有限公司 | Welding process method of brass H62 |
| CN103801805A (en) * | 2014-01-21 | 2014-05-21 | 马鞍山马钢设备安装工程有限公司 | Sleeve welding repair method in blast-furnace tuyere |
Non-Patent Citations (1)
| Title |
|---|
| 高振永: "紫铜/黄铜焊接接头微观组织及力学性能研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20201120 |