I would like to ask whether the lifting rod mechanism for boiler steel structures requires heat treatment
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The hanging plate is made of Q245R, and the screw is grade 20. Does the area marked in the diagram require heat treatment? Or at what thickness should the hanging plate be, and what diameter should the screw have in order to require heat treatment? Is there a **standard source** for determining when heat treatment is necessary? Seeking advice! ! !
This involves choosing the appropriate material, and generally, the selection is based on strength. If the calculations don’t meet the requirements, then a higher-grade material must be used