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Process for overlaying copper layer with high-strength steel

A technology for welding copper layer and high-strength steel, which is applied in the direction of manufacturing tools, welding equipment, arc welding equipment, etc., can solve the problems of difficult to guarantee the quality of copper layer surfacing welding, difficult to control welding temperature, high welding preheating temperature, and reach the welding temperature Easy to control, good welding protection and low preheating temperature

Inactive Publication Date: 2012-05-09
WUHAN WUCHUAN ELECTROMECHANICAL EQUIP
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Problems solved by technology

[0002] In the existing welding technology, the flame brazing method is mainly used for the surfacing copper layer technology of high-strength steel with a yield strength of 700Mpa to 900Mpa. However, this process itself has high welding preheating temperature, difficult control of welding temperature, and welding deformation. Large and other shortcomings make it difficult to guarantee the quality of copper layer surfacing welding, high technical requirements for workers, high labor intensity and low production efficiency

Method used

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Embodiment Construction

[0013] Forged steel QD785 is used in the construction of a hull, that is, high-strength steel with a yield strength of 785Mpa. The steel has a structure of surfacing copper layer in the pressure-resistant channel locked by the slewing ring, and the copper layer surfacing process The level has a very important impact on the internal quality of the copper layer and the bonding performance with the steel substrate. The high-strength steel surfacing copper layer process of the present invention is used to surfacing the copper layer on the QD785 steel substrate. The process is as follows:

[0014] Welding method: molten inert gas shielded welding, the shielding gas is pure argon, the purity is not less than 99.99%;

[0015] Welding material: SCu6180, that is, S215, with a diameter of φ1.0;

[0016] Welding temperature: preheat 200℃~250℃ before welding, and preheat within 50mm of the area to be surfacing during preheating before welding.

[0017] During the welding process, keep th...

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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 [0001] The invention belongs to the technical field of welding, and relates to a high-strength steel surfacing copper layer process. Background technique [0002] In the existing welding technology, the flame brazing method is mainly used for the surfacing copper layer technology of high-strength steel with a yield strength of 700Mpa to 900Mpa. However, this process itself has high welding preheating temperature, difficult control of welding temperature, and welding deformation. Large and other shortcomings make it difficult to guarantee the quality of copper layer surfacing, high technical requirements for workers, high labor intensity and low production efficiency. Contents of the invention [0003] The technical problem solved by the invention is to provide a high-strength steel surfacing copper layer process with simple welding process and high welding quality. [0004] The invention provides a high-strength steel surfacing copper layer process, the w...

Claims

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Application Information

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IPC IPC(8): B23K9/04B23K9/173
Inventor 廖益满杨国城曾海
Owner WUHAN WUCHUAN ELECTROMECHANICAL EQUIP
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