Examination of quality of heat-resistant and quenched steel pipe joints, made by press welding with the heating by the magnetically impelled arc

摘要

The influence of conditions with different intensity of heating on the quality of welded joints of pipe parts of heat-resistant (12Kh1MF) and quenching (45G2 type) steels was demonstrated. The welding of pipes of heat-resistant steels should becarried out under conditions with increased time of heating in comparison with low-alloyed steels. In welding of parts of quenching steels the conditions with high intensity of heating should be used. The subsequent high tempering increases the ductilityof welded joints.