Tin soldering repair method for punch damage of external covering part

Abstract

The invention relates to a tin soldering repair method for punch damage of an external covering part. The method comprises the following steps: (1) checking and confirming punch damage of the part, wherein, the punch damage with area of less than 5mm<2> and depth of less than 2mm can be repaired; (2) repairing the punch damage of the part by utilizing tin solder: uniformly and fully covering the tin solder on the punch damage position during the repair process; (3) flexibly polishing the repaired position of the part by a flexible polishing machine: attaching the whole bottom surface of a grinding wheel of the flexible polishing machine to the plane of the part during the flexible polishing process, wherein, the flexible polishing machine is not allowed to be inclined; (4) inspecting the part after flexible polishing treatment: touching the flexibly polished position of the part by hands, wherein, the part is considered as a qualified product when no obvious boss or indentation is touched by hands, otherwise, the part is considered as an unaccepted product while being obviously uneven; and (5) filling in a certificate of quality after the part passes the inspection, and then warehousing. In the invention, the part is repaired by utilizing the tin soldering repair method; and the repaired part passes various detections such as a salt spray test and the like after a tin soldering repair test, which proves that the part fully complies with the requirements for various indexes.

Description

technical field [0001] The invention relates to a method for repairing damage to workpieces, in particular to a method for repairing solder damage to outer covering parts. Background technique [0002] In the current production of automated stamping lines, damage to the outer cover is one of the problems that plague each stamping production unit. The outer cover has high requirements on the surface quality of the product, and the defect of the scratch will greatly increase the production cost of the outer cover. Therefore, how to reduce the problem of damage to outer covering product parts and reduce the scrap rate has become one of the problems to be solved urgently in each automated production line. [0003] Waste chips are produced during the cutting process of scrap knives. If the production of waste chips can be eliminated, it can be said that the damage of product parts will be basically eliminated. But at present, no mold manufacturer can solve this problem. , It ca...

AI Technical Summary

Problems solved by technology

The second is to use concessions according to the concession release form. Although the concessions are used, the damaged product parts need to be puttyed in the painting workshop, which increases the labor load of the downstream process.

However, the brush plating process usually requires workers to have a high level of skill. It involves some very precise repair methods, and generally this technology is made into products for sale. In this way, the production cost of the product is also increased accordingly.

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