Stainless steel processing points note: affected by the processing temperature is easy to produce internal stress, a large number of chlorine ions to stress corrosion.
In the process of plasma cutting, high local temperature leads to coarse grain of austenitic stainless steel, even produces local melting, excessive internal stress, stress corrosion is particularly obvious.
In the process of room temperature polishing, although the corrosion can be reduced by adjusting the formulation of polishing fluid, stress corrosion and intercrystalline corrosion cannot be completely avoided.
To control intercrystalline corrosion and stress corrosion, it is necessary to start with the processing process of stainless steel equipment and strictly control the process parameters, including welding process parameters, cutting method, heat treatment temperature, etc., to avoid crystallization and internal stress concentration.
During the polishing process, it is found that the weld and heat treatment parts have corrosion phenomenon, especially the plasma cutting surface has serious corrosion, which is intensified with the extension of time.
When heating the elbow, the heated part also produces serious corrosion.
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Post time: Nov-14-2019