Substrate treatment method for portion to be coated

Abstract

The invention provides a substrate processing method for a forming covering film portion. The substrate is processed via sand blasting processing, fixing effect can be formed on the forming covering film portion of a processed object without left particles. The method ejects the elastic grinding material onto the forming covering film portion of the processed object by mixing and dispersing the particles, in particular insulating particles, into base material of an elastomer or bonding the grinding material to support on surface of the base material, the particles will not be embedded in the surface of the processed object, and a convex concave including surface roughness which enables the formed covering film to generate fixing effect is formed.

Description

technical field [0001] The present invention relates to a substrate treatment method for a part of a product to be treated (referred to as "coating film forming part" in the present invention) to be coated, for example, to increase hardness, reduce friction coefficient, improve corrosion resistance, When forming a coating film on the surface of sliding parts for various purposes such as improving high-temperature oxidation resistance and decoration, the surface treatment method is performed by blasting the coating film-forming part of the above-mentioned sliding parts and other processing objects. [0002] In addition, the "blasting method" in the present invention broadly includes blasting methods that use a fluid such as dry blasting or wet blasting that use a compressed fluid such as compressed air to spray abrasives, and also widely include Injection velocity and injection pressure, the sandblasting process method of spraying abrasive material to the part of the coating fi...

AI Technical Summary

Problems solved by technology

Even if the method described in the above-mentioned Patent Document 1 is copied, the above-mentioned problem caused by the remaining abrasive grains cannot be eliminated even if the surface treatment of the part where the coating film is formed is carried out.

[0022] In addition, in order to remove the abrasive grains embedded in the surface of the treatment object due to sandblasting, it is also considered to use methods other than sandblasting to polish the surface of the treatment object after sandblasting, or to remove it by chemical etching, However, when these methods are used, it is difficult to maintain the unevenness formed on the surface of the processing object due to sandblasting, and at the same time only remove the surface layer part embedded with abrasive grains. Membrane parts, it is very difficult to control the surface roughness that can produce the above-mentioned fixing effect

[0023] In addition, if the embedded abrasive grains are removed by a method other than the above-mentioned blasting process, the process becomes complicated, and other processing equipment must be prepared, which inevitably increases the cost of the surface treatment.

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