Fusion welding method for copper plates and alloys thereof

A technology of fusion welding, alloy, applied in the field of arc welding

Inactive Publication Date: 2016-03-02
FUSHUN YONGCHANG SPECIAL STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] Aiming at the problems existing in the above-mentioned prior art, the present invention proposes a melting and welding process for copper plates and their alloys. This process not only solves the problem of heating and melting the base metal in the welding process but also ensures the smooth formation of the liquid metal in the molten pool. question

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  • Fusion welding method for copper plates and alloys thereof
  • Fusion welding method for copper plates and alloys thereof

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Embodiment

[0038] The present invention comprises the steps:

[0039] 1. Preparation before welding:

[0040] (1) According to the size of the weldment, place the support legs of the weldment on the welding site, set at least 6 under each base metal, and weld the bottom line terminal on a certain support leg.

[0041] (2) Install a preheating temperature control system on the working table where the weld is located, and evenly distribute the flame generated by the heater on both sides of the base metal weldment.

[0042] (3) Lay insulation materials, such as refractory bricks or asbestos felt, on all areas of the working platform under the bottom of the weldment except the preheating temperature control system.

[0043] (4) Assembling welded parts: Place the prepared copper parts to be welded on the supporting legs by lifting equipment, and reserve a gap between the joints according to the process requirements.

[0044] (5) According to the operating range of the welding manipulator, r...

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Abstract

The invention relates to a fusion welding method for copper plates and alloys thereof. The fusion welding method comprises the steps of welding preparation, welding preheating, welding, welding bead protection, welding post-cooling, welding joint formation, internal quality inspection and the like. Through the fusion welding method disclosed by the invention, workpieces made from copper or copper alloy materials and having thicknesses of more than 20mm can be welded; and the purposes of carrying out heating fusion on base metal and ensuring stable states of liquid metals in a welding pool are realized.

Description

technical field [0001] The invention belongs to the welding field of non-ferrous metal copper and its alloys, and in particular relates to an arc welding method for realizing thick copper plates and their alloys under inert gas protection. The method can weld copper or copper alloy workpieces with a thickness of more than 20 mm. Background technique [0002] Copper is the earliest metal used by humans. As early as prehistoric times, humans mined, smelted and used copper devices. The use of copper had a profound impact on the progress of early human civilization. [0003] Pure copper is a fuchsia lustrous metal with a melting point of 1083°C and a boiling point of 2567°C. Its solid density is 8.92 g / cm3 and its liquid density is 8.091 g / cm3, more than three times the liquid density of aluminum. The surface tension of copper is about 1.3×10 -2 N / cm is a quarter of that of aluminum, so the fluidity of copper liquid is much greater than that of aluminum liquid. Pure copper has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/235B23K9/32
CPCB23K9/16B23K9/235B23K9/32B23K2103/12
Inventor 蒋应田孙德备蒋常铭李宪臣孙正卓郭宏杰赵东洋王运玲杨坪郭淑娟高学朋
Owner FUSHUN YONGCHANG SPECIAL STEEL
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