Heat treatment system and heat treatment method

A heat treatment system, characterized in that said system comprises:

• a rotating device which rotates a cylindrical workpiece;
• a holding member which holds the cylindrical workpiece at a predetermined position;
• a heating member which heats the cylindrical workpiece from an inner circumferential surface side;
• a cooling device which cools the cylindrical workpiece from an outer circumferential surface side by injecting a cooling liquid;
• an injecting device which is mounted at a position remote from the cooling device and injects the cooling liquid;
• a heating member holding member which hold the heating member fixedly in position;
• a cooling device holding member which hold the cooling device fixedly in position;
• and
• a base member to which the rotating device and the injecting device are attached and which moves relative to the heating member and the cooling device, wherein
• the heating member is capable of heating the inner circumferential surface side of the cylindrical workpiece when the base member moves while the heating member is positioned in a radial inner region of the cylindrical workpiece which has been held by the holding member, and wherein
• the injecting device is capable of injecting the cooling liquid toward a heating member end face when the base member moves while the heating member is positioned in the radial inner region of the cylindrical workpiece which has been held by the holding member.