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A surface treatment process of phosphor copper brazing material

A technology of brazing materials and surface treatment, which is applied in the direction of welding/cutting media/materials, welding equipment, manufacturing tools, etc., can solve oxidation and other problems, and achieve the effects of simple process, saving sulfuric acid, and easy large-scale application

Inactive Publication Date: 2021-07-23
江西金世纪特种焊接材料有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Severe oxidation will occur during the heating process, and it needs to be pickled again after it is made into an electrode

Method used

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  • A surface treatment process of phosphor copper brazing material

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Embodiment Construction

[0015] The present invention will be described in further detail below through specific examples.

[0016] Such as figure 1 Shown, a kind of surface treatment process of phosphor copper brazing material comprises the following steps:

[0017] A. Put the formed semi-finished alloy raw materials in the extruder, and extrude them into phosphor copper brazing materials of different specifications according to the size of the mold;

[0018] B. Compulsory water cooling of the phosphor copper brazing material extruded from the mold, so that the phosphor copper brazing material in the high temperature state will produce an instantaneous temperature difference after encountering cold water, and the cuprous oxide film on the surface of the phosphor copper brazing material Cracking and detachment; through this step, the surface of the phosphor copper brazing material is formed close to its natural color under machining (turning state). Therefore, there is no need to adopt the method of...

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Abstract

The invention belongs to the technical field of material processing, and in particular relates to a surface treatment process for phosphor-copper brazing materials, comprising the following steps: A. Putting the formed semi-finished alloy raw material in an extruder, and extruding it into different specifications according to the size of the mold Phosphorus copper brazing material; B. Compulsory water cooling of the phosphorus copper brazing material extruded from the mold, so that the phosphorus copper brazing material in the high temperature state will produce an instantaneous temperature difference after encountering cold water, and the phosphor copper brazing material The cuprous oxide film on the surface is cracked and detached; C, drawing the phosphor copper brazing material obtained in step B; D, processing the drawn phosphor copper brazing material into products of various specifications, sizes and shapes. The process is simple, easy to operate, easy to be popularized and applied on a large scale, and perfectly replaces the pickling process, saving a lot of sulfuric acid, green production, environmentally friendly manufacturing, and in line with the concept of sustainable development.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a surface treatment process of phosphor-bronze brazing materials. Background technique [0002] my country is the world's largest manufacturing base for household appliances, and it needs to consume tens of thousands of tons of phosphor-bronze (silver-containing or silver-free) brazing materials every year. Since phosphor copper alloy is a brittle material, heating extrusion molding technology is often used in production. Due to the formation of oxidation reaction at high temperature, a dark brown oxide film is formed on the surface of phosphor copper alloy, the surface is rough, and there are hard oxide particles attached. In the following drawing process, it is easy to cause damage to the mold and reduce the service life of the mold. [0003] The traditional method is to use sulfuric acid to pickle the phosphor copper brazing materials, and through the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/40C21D1/82
CPCB23K35/40C21D1/82
Inventor 朱卫群
Owner 江西金世纪特种焊接材料有限公司