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Stainless steel board figuration analysis and the way to deal with a situation t

According to Chinese iron and steel news network reported on September 13, 2007: Of stainless steel extend rate is small, stretch modular quantity E is bigger, sclerotic index is higher, value of r of index of sex of thick Xiang Yi is very little (stainless steel is 0.9 ~ 0.11, mild steel is 1.3 ~ 2.0) . Stainless steel material by succumb to be out of shape to cracked plasticity level is short, especially the R of the value that increase advantageous position that its plasticity meet an emergency compares is bigger. Stainless steel board pull deep craze to happen in sometimes pull deep after be out of shape, it is to be being become sometimes pull deep by when be being exited inside sunken model, happen instantly; It is to be in sometimes pull after be out of shape, suffer greatly bump or happen when vibration; Also be in sometimes pull deep the ability in deposit or using a process what period of time passes after be out of shape happens. The article is aimed at stainless steel board pull deep when the account that produces limitation undertook an analysis, put forward to solve measure.

Stainless steel pulls difficult process middling to see the problem is analysed

The reason that 1 craze forms

Of austenite stainless steel cold make sclerotic index tall (stainless steel is 0.34) . Austenite stainless steel is metastable to finalize the design, happen to change in the meeting when be out of shape, cause martensite appearance. Martensite photograph is clearer, because this is incidental craze.

When plasticity is out of shape, as the accretion of deflection, the martensite content that cause

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