Automobile die surface film repair technology

Abstract

The invention discloses an automobile die surface film repair technology. The technology comprises the following steps that 1, sand blasting treatment is carried out; 2, coating repair pretreatment iscarried out; 3, coating repair is carried out, wherein a laser cladding method is adopted for carrying out coating repair on a die; 4, oiling protection is carried out, wherein after a laser claddinglayer is cooled at a normal temperature to a room temperature, a thin layer of silicon oil is smeared on the repaired surface; and 5 detecting is carried out. The technology is easy to operate, usedmaterials are low in price and easy to obtain, and the damaged automobile die surface film can be effectively repaired; as local repair is adopted, in comparison with complete integral spraying in theprior art, damage to a die base body is reduced as much as possible, and the repair quality is ensured; and the laser cladding method is adopted for repairing the repair portion, and the film which is flat and smooth in surface, free of air holes and cracks, high in hardness and good in wear resistance and corrosion resistance can be formed. The technology can be applied to and popularized in dies used in fields of other types of aircraft engine turbines and the like and has a wider use range.

Description

Technical field [0001] The invention belongs to the technical field of automobile molds, and specifically relates to a process for repairing surface coating films of automobile molds. Background technique [0002] With the rapid development of the automobile industry, the requirements for the accuracy and life of automobile molds are getting higher and higher. The demand for research and development of new models continues to increase. For every new model developed, about 80% of the molds need to be newly developed, and about 60% of the development costs of new models are used for the development of body and stamping technology and equipment. Among them, the production process requirements and high technical content of automobile molds lead to high production costs. Therefore, automobile molds are required to have the highest possible service life. After the automobile mold without surface treatment is put into production, the surface of the mold is very easy to be strained, and...

AI Technical Summary

Problems solved by technology

[0003] However, the working environment of automobile processing molds is harsh, and they are under the impact and erosion of high-temperature melt for a long time. After a certain period of time, the coating film on the surface of the mold will degrade, fail or be damaged, and the coating film on the surface of the mold needs to be repaired.

In the prior art, the most commonly used repair method is to remove all the aluminum coating on the surface of the composite material and then re-prepare it. However, this method has a large workload, high cost, and waste of resources. The composite material is easily damaged when the aluminum coating is removed. matrix, which induces derivative defects

People need a repair method that can combine the characteristics of the mold material and its surface coating film preparation method and the actual situation of the production site to solve the shortcomings of the existing technology, such as heavy workload and easy to generate derivative defects.