High-strength silver-free copper-based brazing filler metal

A high-strength, silver-copper technology, applied in the direction of welding/cutting media/materials, welding media, welding/welding/cutting items, etc., can solve the problems of human poisoning, waste of resources, increase costs, etc., to achieve enhanced tensile strength, Good welding effect and lower melting point

Inactive Publication Date: 2015-09-09
ANHUI HUAZHONG WELDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Ag is a precious metal, which increases the cost of the enterprise and wastes the country's scarce resources. Moreover, the cadmium-containing brazing

Method used

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Examples

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Example Embodiment

[0016] In order to make it easy to understand the technical means, creative features, goals and effects achieved by the present invention, the present invention will be further explained in conjunction with specific embodiments below.

[0017] A high-strength silver-free copper-based solder is composed of the following components by mass percentage:

[0018] P: 5%

[0019] Sn: 1-4%

[0020] Ni: 1-2%

[0021] The remainder is Cu.

[0022] The preferred mass percentage of each component is:

[0023] P: 5%

[0024] Sn: 4%

[0025] Ni: 1%

[0026] The remainder is Cu.

[0027] A high-strength silver-free copper-based solder with low cost, safety and environmental protection, and good welding effect. By adding Sn and Ni, the melting point of the solder alloy is reduced, and the tensile strength and wettability of the solder alloy are enhanced.

[0028] The basic principles and main features and advantages of the present invention have been shown and described above. Those skilled in the industry s...

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PUM

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Abstract

The invention discloses a high-strength silver-free copper-based brazing filler metal which is composed of P, Sn, Ni and Cu. The high-strength silver-free copper-based brazing filler metal is low in cost, safe, environmentally friendly and good in welding effect; through the adding of Sn and Ni, the melting point of brazing filler metal alloy is reduced, and the tensile strength and wettability of the brazing filler metal alloy are enhanced.

Description

Technical field [0001] The invention relates to a solder, in particular to a high-strength silver-free copper-based solder. Background technique [0002] The application involving welding between dissimilar metals such as copper, stainless steel, stainless iron, copper alloys, etc. is very wide, and the brazing of these metals generally requires Ag-based or Ag-containing copper-based solders, and even some manufacturers use cadmium-containing silver Only the base solder can obtain an ideal brazing effect. However, Ag is a precious metal, which increases the cost of enterprises and wastes the country's scarce resources. In addition, cadmium-containing solders are seriously polluting the environment and toxic to the human body, which severely limits the application of brazing technology in these fields. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a high-strength silver-free copper-based solder with low cost, safety an...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K103/18
CPCB23K35/302B23K35/0222B23K2103/18
Inventor 曹立兵
Owner ANHUI HUAZHONG WELDING MATERIAL CO LTD
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