Precision metal processing quality of five evaluation summary in the machining
industry knows that any parts processing, to achieve perfect effect, is impossible.
Will always be there for micro deviation.
Therefore, in the process of precision metal processing, we put forward the components of the surface integrity of the concept.
It contains two characteristics: one is the geometrical characteristics of the machined surface.
Such as roughness, machining surface defects.
The types of defects has a lot of, in the process of precision metal processing cutting produce is burr;
The second is parts processing surface material performance.
Such as the plastic deformation and strain hardening, surface residual stress and the change of microstructure of surface layer, and reflect the surface rust, optical properties, etc.
For a single parts, should choose evaluation elements according to specific requirements.
Precision machinery parts processing quality is very good, we can from the following five indicators to evaluate, after precision metal processing detection at the same time, also is to operate according to these indicators.
Surface roughness of the surface texture of the morphology, including surface waviness and surface texture direction and 2.
Surface defect: including machining burr, flash, macroscopic defects such as cracks, surface tear and buckling.
Microstructure and surface metallurgy, and chemical properties.
Including microstructure, microscopic cracks and surface chemical properties of 4.
Surface mechanical properties, including the degree of strain hardening and depth, size, direction and distribution of residual stress.
Other aspects of surface engineering technology, including electronic performance changes, changes in optical properties.
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