Annular brazing filler metal cleaning method and cleaning device

Abstract

The invention relates to an annular brazing filler metal cleaning method. The annular brazing filler metal cleaning method comprises the following steps of: (1) deoxidizing an annular brazing filler metal in an acid solution for 180-24 seconds; (2) rinsing for 30-60 seconds with water; (3) removing oil from the annular brazing filler metal with a metal cleaning agent aqueous solution with the mass percent concentration of 2-5% at the temperature of 40-60 DEG C; (4) rinsing for 30-60 seconds; (5) polishing by using a polishing agent containing acid with the mass percent concentration of 8-12% and a brightening agent with the mass percentage concentration of 0.5-1% for 180-240 seconds; (6) rinsing for 30-60 seconds; and (7) passivating a solution containing 0.3-0.8% of benzotriazole for 5-20 seconds. The invention also relates to an annular brazing filler metal cleaning device for realizing the method.

Description

technical field [0001] The invention relates to a ring-shaped solder cleaning method, and also relates to a ring-shaped solder cleaning device for realizing the method. The cleaning device belongs to matching cleaning equipment for brazing material processing. Background technique [0002] In recent years, with the application of brazing materials in high-end fields such as aviation, aerospace, nuclear energy, and electronics, higher requirements have been put forward for the quality and surface quality of brazing materials. However, how to improve the cleaning quality of the alloy solder surface after production has always been an urgent problem to be solved. At present, the common cleaning method of ring-shaped solder is manual operation. drying. The manual operation method needs to be soaked in acid solution and cleaning agent solution for a long time, the soaking time is long and the efficiency is low; the surface quality after soaking and rinsing is uneven, which often...

AI Technical Summary

Problems solved by technology

The manual operation method needs to be soaked in acid solution and cleaning agent solution for a long time, the soaking time is long and the efficiency is low; the surface quality after soaking and rinsing is uneven, which often leads to a lot of rework; In the process, the waste of water resources, acid liquid and cleaning agent solution caused by human is not easy to control, which makes the processing cost higher

The cleaned brazing filler metal is directly dried, which takes a long time, and the surface of the dried brazing filler metal is prone to water marks and surface oxidation.

There is no automatic cleaning equipment and cleaning process specially designed for annular solder in the market, which hinders the improvement of the surface quality of the solder alloy and affects the performance of the solder

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