Brazing copper alloy with high strength and corrosion resistance

A corrosion-resistant and copper alloy technology, which is applied in the field of high-strength corrosion-resistant brazing copper alloys, can solve the problems of low brazing strength of silicon bronze alloy brazing filler metals, hindering the production and application of brazing filler metal alloys, and long production cycles, and achieves Effects of reduced work hardening rate, improved workability, and high brazing strength

Inactive Publication Date: 2012-01-11
TIANJIN JINLONG WELDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the brazing strength of this silicon bronze alloy solder is not high, the corrosion resistance is poor, and the work hardening is fast, so repeated annealing and pickling are

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: Composed of the following components: 2.8kg Si, 0.5kg Mn, 0.2kg Mg, 0.1kg Ti, 0.01kg Ce, 96.39kg Cu.

[0012] The composition of the present invention is made into welding wire by conventional solder processing technology.

Embodiment 2

[0013] Example 2: Composed of the following components: 4.0kg Si, 1.5kg Mn, 1.0kgMg, 0.8kg Ti, 0.1kg Ce, 92.6kg Cu.

Embodiment 3

[0014] Example 3: Composed of the following components: 3.2kg Si, 1.0kg Mn, 0.6kg Mg, 0.5kg Ti, 0.05kg Ce, 94.65kg Cu.

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PUM

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Abstract

The invention discloses a brazing copper alloy with high strength and corrosion resistance. The brazing copper alloy comprises the following ingredients in percentage by mass: 2.8-4.0% of Si, 0.5-1.5% of Mn, 0.2-1.0% of Mg, 0.1-0.8% of Ti, 0.01-0.1% of Ce and the rest amount of Cu. The brazing copper alloy disclosed by the invention has the advantages of high brazing strength, excellent corrosion resistance and good machining performance. As a small amount of Ti, Ce and Mg is added in the Cu-Si alloy, the brazing alloy provided by the invention has an obviously-fined grain size for casting line blanks, and the grain size is about one third of that of the S211 alloy; and the machining hardening ratio is obviously lowered, and the processing capability is enhanced.

Description

technical field [0001] The present invention relates to the field, and more particularly, to high-strength corrosion-resistant brazing copper alloys. Background technique [0002] At present, S211 (Cu+2.7~3.5%Si+1.0~1.5%Mn) silicon bronze alloy solder is mostly used for laser brazing of automobile body panels, MIG arc brazing and other welding wires, and the annual consumption at home and abroad exceeds 5,000 tons. However, the brazing strength of this silicon bronze alloy solder is not high, the corrosion resistance is poor, and the work hardening is fast, so repeated annealing and pickling are required in wire drawing production. The production cycle is long, the energy consumption is high, the loss is large, and the pollution is serious, so the production and application of the solder alloy have been hindered. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a hig...

Claims

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Application Information

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IPC IPC(8): B23K35/30
Inventor 何广年曹颜顺
Owner TIANJIN JINLONG WELDING MATERIAL
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