Regarding the issue of the heating rate in heat treatment
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For a device used in heat treatment, our process requirements specify that the heating rate should be ≤80°C/h. In one particular area, however, the temperature increased by about 15°C within 5 minutes; calculated based on this 5-minute period, the heating rate would be 180°C/h. Yet in reality, the heating rate throughout the hour was not that high. Is such operation acceptable?
As long as one is not afraid of the welded joints of the internal components being torn apart due to uneven heating, any method will work.
It’s acceptable below 400 degrees, but not above 400 degrees. Today’s heat treatment equipment is all automatically controlled, so it’s not easy to cause such a phenomenon.