2024

“Precision machining” surface treatment

Precision machining surface treatment:

1, chemical polishing: in the role of abrasives, chemical solvents, etc., the surface of the workpiece undergoes chemical or electrochemical changes, so as to achieve the purpose of a process method;

2, cationic oxidation: the oxide film containing metal cations coated on the surface of the workpiece, oxidized under the appropriate conditions into a colored metal layer of a method. Metal cation oxidation process has electrolytic oxidation method, chemical oxidation method and plasma oxidation method;

3, sandblasting: mechanical methods to make the surface of the workpiece to produce fine sand-like roughness to enhance its surface friction characteristics of a process method;

4、Electroplating:using chemical or electrolytic methods, plating a layer of metal film on the surface of metal or alloy process method. Electroplating is a widely used and large amount of surface treatment technology in hardware processing.

Precision machining of manufacturing precision is high, the product in the process of using the product surface is clean, that is to say, the production of precision machining can save a lot of machining work can be directly used in life. Precision machining of the surface there will be a lot of gray-black round shallow pits, equipment in the absence of cleaning before the pits filled with this slag material, these substances in the degree of direct impact on the quality of our castings.

Precision machining is the use of a cast iron material, its comprehensive performance is close to steel, it is based on its good performance, has been successfully used for casting some of the complex force, strength, toughness, the requirements of the better parts. Ductile iron has been developed as second only to gray cast iron, the application of cast iron materials. The so-called “iron instead of steel”, mainly refers to ductile iron.