Stainless steel pressure tank head

The magnitude of the structural stress of the stainless steel pressure tank head is related to factors such as the cooling rate, shape, and chemical composition of the material in the martensitic transformation zone of the workpiece. The ultimate result of stress changes in the structure of stainless steel pressure tank heads is surface tensile stress and core compressive stress, which is exactly opposite to thermal stress. Practice has proven that during the heat treatment process of any workpiece, as long as there is a phase transition, thermal stress and structural stress will occur. However, thermal stress is already generated in the stainless steel head before the structural transformation, while structural stress is generated during the structural transformation process. Throughout the cooling process, the combined effect of thermal stress and structural stress is the actual stress present in the workpiece.