3D hot bending and quenching apparatus and 3D hot bending and quenching method of steel pipe

摘要

A three-dimensional hot bending quenching apparatus according to the present disclosure includes a feeding device that feeds a tube body in an axial direction, an induction heating coil that is disposed so as to surround an extension line of the feeding device in a tube feeding direction, and the induction heating coil. A three-dimensional hot bending quenching device comprising: a cooling device disposed adjacent to the downstream side of the feeding device in the tube feeding direction; and a processing force imparting device that imparts a processing force to the tube. The induction heating coil includes a bent portion whose inner surface is bent, and a magnetic member is disposed at the bent portion of the induction heating coil so as to cover the inner surface of the induction heating coil. This is a three-dimensional hot bending quenching device.