How to Carry Out Workpiece Surface Treatment in Precision Machining
With the development of modern science and technology, the performance of modern industry on the surface of various equipment parts is also getting higher and higher, especially the workpiece after precision machining, which works under the conditions of high temperature, corrosion, high speed, high pressure, etc. Destruction often starts at the surface. For example, high-temperature oxidation, wear, etc., local damage to the surface often leads to the failure of the entire part, and eventually leads to
cause the equipment to be discontinued.
Therefore, how to avoid similar phenomena in these parts, improve the surface properties of materials to increase service life, save resources and improve production efficiency has become an important task, and the biggest advantage of surface treatment of metal parts today is that it can be used in a variety of ways, The method produces a thin surface layer with better performance than its own material, which is equivalent to wearing a silicone case on the mobile phone case. This thin surface layer is usually a few microns to several millimeters, as small as a few hundredths of the workpiece structure size, and as large as a few tenths, but it can make the precision machined parts have higher wear resistance, High temperature resistance characteristics.
Classification of surface treatment:
1) Electrochemical method: electroplating, anodizing
2) Chemical method: chemical conversion coating treatment, chemical plating
3) Thermal processing method: thermal spraying, chemical heat treatment, hot dip plating
4) Vacuum method: ion implantation, chemical vapor deposition, physical vapor deposition
The average benefit of processing precision-machined parts by the above methods is as high as 5-20 times. Metal surface treatment can directly prevent the failure of many precious non-standard parts. Local surface strengthening repair is implemented, and the purpose of pre-protection measures is to prolong or restore the use value of some parts.
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