CN102441721A - Process for overlaying copper layer with high-strength steel - Google Patents
Process for overlaying copper layer with high-strength steel Download PDFInfo
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- CN102441721A CN102441721A CN2011102887590A CN201110288759A CN102441721A CN 102441721 A CN102441721 A CN 102441721A CN 2011102887590 A CN2011102887590 A CN 2011102887590A CN 201110288759 A CN201110288759 A CN 201110288759A CN 102441721 A CN102441721 A CN 102441721A
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Abstract
The invention belongs to the technical field of welding, and relates to a process for overlaying a copper layer with high-strength steel. The welding process includes the steps: performing metal inert-gas welding; and controlling welding temperature by preheating before welding to reach 200-250 DEG C and keeping the temperature of each layer or each bead the same as preheating temperature during welding. By the aid of the metal inert-gas welding, the process is fine in welding protection, low in preheating temperature, easy in welding temperature control and stable in welding quality. Moreover, labor intensity is greatly reduced, production efficiency is improved, and production cost is reduced.
Description
Technical field
The invention belongs to welding technology field, relate to a kind of high-strength steel surfacing of Cu layer process.
Background technology
In existing solder technology, be the method for 700Mpa for yield strength, yet this process itself exist welding pre-heating temperature high to the main employing of 900Mpa high strength steel surfacing of Cu layer technology gas brazing; Welding temperature is difficult to control; Shortcomings such as welding deformation is big cause copper layer surfacing quality to be difficult to guarantee, and are high to workman's specification requirement; Productive labor intensity is big, and production efficiency is low.
Summary of the invention
It is easy that the technical problem that the present invention solves provides a kind of welding procedure, the high-strength steel surfacing of Cu layer process that welding quality is high.
The present invention provides a kind of high-strength steel surfacing of Cu layer process, its welding manner: welding;
The welding temperature: 200 ℃～250 ℃ of weld preheatings keep between every layer or per pass temperature identical with preheat temperature in the welding process.
Preferably, welding material adopts SCu6180, and diameter is φ 1.0.
Preferably, will treat preheating in the 50mm scope of built-up welding zone during said weld preheating.
Preferably, the protective gas that said welding adopts is a straight argon, and said straight argon purity is not less than 99.99%.
Preferably, welding sequence adopts multi-pass welding.
Preferably, the welding position is downhand welding or horizontal position welding.
Preferably, welding parameter is: welding current is 200～250A, and arc voltage is 24-28V, and gas flow is 15-25L/min; Speed of welding is 28-40cm/min, and current characteristics is a dc reverse connection.
The invention has the beneficial effects as follows the employing inert gas-shielded arc welding, welding protection is good, and preheat temperature is low, and welding temperature is controlled easily, welding quality stable, and greatly reduced labour intensity, and improved production efficiency, reduced production cost.
The specific embodiment
Supporting use forged steel QD785 in certain hull construction; Be that yield strength is the high strength steel of 785Mpa; There is the version of surfacing of Cu layer in these steel in the withstand voltage passage that utilizes pivoted loop locking; And copper layer internal soundness reached the technological level of copper layer built-up welding and the binding ability of steel matrix has very important influence, adopted high-strength steel surfacing of Cu layer process of the present invention surfacing of Cu layer on the QD785 steel matrix, and its technology is following:
Welding manner: welding, protective gas is a straight argon, purity is not less than 99.99%;
Welding material: SCu6180, i.e. S215, diameter is φ 1.0;
The welding temperature: 200 ℃～250 ℃ of weld preheatings, when weld preheating, will treat preheating in the 50mm scope of built-up welding zone.
Keep between layer (road) temperature identical in the welding process with preheat temperature;
Welding sequence: adopt multi-pass welding;
Welding parameter: the welding position is downhand welding, and welding current is 230A, and arc voltage is 25V, and gas flow is 18L/min; Speed of welding is 30cm/min, and current characteristics is a dc reverse connection.
Among the present invention, adopt argon gas can greatly reduce the possibility of copper layer oxidation as protective gas; 200 ℃～250 ℃ of weld preheatings also guarantee that temperature is identical with preheat temperature between welding process middle level (road), can reduce the phenomenon that copper layer incomplete fusion occur; Adopt multi-pass welding; Can prevent the generation of weld cracking or delayed crack; Simultaneously, the process that preceding one weld seam is " preheating " to one weld seam in back, one weld seam in back is equivalent to the process of " after-baking " concerning preceding one weld seam; Effectively improve stress distribution in the welding process, be beneficial to the assurance welding quality; Adopt HSLA STEEL TO WELD such as suitable welding condition such as electric current, voltage and speed of welding to play good action.
Owing to adopted inert gas-shielded arc welding, welding protection is good, and preheat temperature is low, and welding temperature is controlled easily, welding quality stable, and greatly reduced labour intensity, and improved production efficiency, reduced production cost.
It should be noted last that; The above specific embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the spirit and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (7)
1. a high-strength steel surfacing of Cu layer process is characterized in that,
Welding manner: welding;
The welding temperature: 200 ℃～250 ℃ of weld preheatings keep between every layer or per pass temperature identical with preheat temperature in the welding process.
2. high-strength steel surfacing of Cu layer process according to claim 1 is characterized in that:
The welding material that adopts: SCu6180, diameter are φ 1.0.
3. high-strength steel surfacing of Cu layer process according to claim 1 and 2 is characterized in that:
When said weld preheating, will treat preheating in the 50mm scope of built-up welding zone.
4. high-strength steel surfacing of Cu layer process according to claim 1 and 2 is characterized in that:
The protective gas that said welding adopts is a straight argon, and said straight argon purity is not less than 99.99%.
5. high-strength steel surfacing of Cu layer process according to claim 1 and 2 is characterized in that:
Welding sequence: adopt multi-pass welding.
6. high-strength steel surfacing of Cu layer process according to claim 1 and 2 is characterized in that:
The welding position is downhand welding or horizontal position welding.
7. high-strength steel surfacing of Cu layer process according to claim 1 and 2 is characterized in that:
Welding parameter: welding current is 200～250A, and arc voltage is 24-28V, and gas flow is 15-25L/min; Speed of welding is 28-40cm/min, and current characteristics is a dc reverse connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102887590A CN102441721A (en) | 2011-09-27 | 2011-09-27 | Process for overlaying copper layer with high-strength steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102887590A CN102441721A (en) | 2011-09-27 | 2011-09-27 | Process for overlaying copper layer with high-strength steel |
Publications (1)
| Publication Number | Publication Date |
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| CN102441721A true CN102441721A (en) | 2012-05-09 |
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| CN2011102887590A Pending CN102441721A (en) | 2011-09-27 | 2011-09-27 | Process for overlaying copper layer with high-strength steel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949750A (en) * | 2014-04-17 | 2014-07-30 | 沈阳大学 | Method for preventing bead welding copper alloy from generating air holes |
| CN108856972A (en) * | 2018-06-14 | 2018-11-23 | 重庆文理学院 | The welding procedure of built-up welding tin bronze on a kind of stainless steel |
| CN109128436A (en) * | 2018-10-15 | 2019-01-04 | 武汉船用机械有限责任公司 | A kind of process of the built-up welding aluminium bronze on steel |
| CN109604769A (en) * | 2019-01-07 | 2019-04-12 | 武汉船用机械有限责任公司 | The welding method of annular workpieces |
| CN112008172A (en) * | 2020-08-14 | 2020-12-01 | 山东蓬翔汽车有限公司 | Method for repairing superficial defects of iron casting |
| CN113334841A (en) * | 2021-06-16 | 2021-09-03 | 中机智能装备创新研究院(宁波)有限公司 | Skateboard and preparation method thereof |
Citations (1)
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| CN101347893A (en) * | 2008-08-29 | 2009-01-21 | 靖江市高新窑炉材料有限公司 | Technique for processing albronze hollow roll |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101347893A (en) * | 2008-08-29 | 2009-01-21 | 靖江市高新窑炉材料有限公司 | Technique for processing albronze hollow roll |
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| 姜军记等: "lOCrNi3MoCu钢的堆铜焊工艺", 《焊接》 * |
| 张金库等: "钢、铜复合套简堆焊方法研究", 《煤矿机械》 * |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949750A (en) * | 2014-04-17 | 2014-07-30 | 沈阳大学 | Method for preventing bead welding copper alloy from generating air holes |
| CN108856972A (en) * | 2018-06-14 | 2018-11-23 | 重庆文理学院 | The welding procedure of built-up welding tin bronze on a kind of stainless steel |
| CN109128436A (en) * | 2018-10-15 | 2019-01-04 | 武汉船用机械有限责任公司 | A kind of process of the built-up welding aluminium bronze on steel |
| CN109604769A (en) * | 2019-01-07 | 2019-04-12 | 武汉船用机械有限责任公司 | The welding method of annular workpieces |
| CN109604769B (en) * | 2019-01-07 | 2021-11-16 | 武汉船用机械有限责任公司 | Method for welding annular workpiece |
| CN112008172A (en) * | 2020-08-14 | 2020-12-01 | 山东蓬翔汽车有限公司 | Method for repairing superficial defects of iron casting |
| CN113334841A (en) * | 2021-06-16 | 2021-09-03 | 中机智能装备创新研究院(宁波)有限公司 | Skateboard and preparation method thereof |
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Application publication date: 20120509 |