2016年4月13日星期三

What is the surface treatment of metal injection molding process?


MIM pieces of commonly used surface treatment process? Follow the ZCMIM metal injection molding process manufacturers to learn about it!
Polishing process

To reduce the surface roughness of the workpiece by using mechanical, chemical or electrochemical processes to obtain a bright and smooth surface.
Plating treatment

Process for attaching a metal or other material to a metal film on the surface of a metal or other material. Electroplating can play a role in preventing metal oxidation (such as corrosion), improve wear resistance, conductivity, reflective, corrosion resistance (such as copper sulfate, etc.) and enhance the role of beauty and so on.
PVD treatment

Using the physical process to realize the material transfer, the atom or molecule is transferred from the source to the surface of the substrate. Its function is to make some special properties (such as high strength, wear resistance, heat resistance, corrosion resistance, etc.) particles sprayed on the lower performance of the matrix, making the matrix has better performance.
Blackening

The metal surface to produce a layer of oxide film, to isolate the air, to achieve the purpose of rust, is a chemical treatment is very common. The appearance of requirements is not high by blackening, the main component of blackening is sodium hydroxide and sodium nitrite.
Phosphating treatment

Is a kind of chemical and electrochemical reaction to form the phosphate film process. The purpose of phosphate is mainly:
1) to provide protection to the base metal, to a certain extent, to prevent corrosion of metal;
2) for painting before bottoming, improve the paint film adhesion and corrosion resistance.
Spray treatment

Through the gun or disc type atomizer, with pressure or centrifugal force and disperse into uniform and fine droplets, applying to be painted surface coating method.
In short:
1) polishing, phosphating is mainly pretreatment, preparation for the rest of the treatment;
2) electroplating, PVD is the application of more two kinds of processing technology;

3) and black spray would have great changes on the surface of the products, more suitable for large workpiece.

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