Device for heating or cooling workpieces and manufacturing method therefor

摘要

A heater unit comprises a shaft member and a plate member. The shaft member has a body and a flange portion formed on an end portion of the shaft body. The plate member is formed by brazing a plurality of plate elements together. One of the plate elements has a recess in which the flange portion is inserted. A gap is formed between a peripheral surface of the flange portion and an inner peripheral surface of the recess. An end face of the flange portion is brazed to the plate element in a manner such that the flange portion is inserted into the recess and the flange portion is loaded and heated by a pressurizing jig.