| abstract |
An electro-fusion fitting includes a body which is provided with a heater including a magnetic alloy unit having a predetermined Curie temperature in the vicinity of a joint surface thereof in a manner that a surface of the heater is exposed on the joint surface. The joint surface of the body is brought into contact with a joint surface of a member to be coupled and, if a high-frequency current is applied to the magnetic alloy unit by electromagnetic induction, the magnetic alloy unit generates heat, and a temperature of the magnetic alloy unit is kept at the predetermined Curie temperature due to a temperature self-control function thereof. Therefore, if the Curie temperature is set at a fusion temperature, the joint surfaces of the body and the member to be coupled are coupled to each other. |