Abstract:

This paper introduces the application of a primary plus secondary local postweld heat treatment method and induction heat treatment technology in threaded ring lock heat exchangers. The method solves the problem of local postweld heat treatment with traditional ways for this type of heat exchanger, and also provides solutions for other large over-limit equipment as a new local postweld heat treatment method.

Key words:  primary plus secondary heating')">

 primary plus secondary heating, induction heat, heat exchanger ')">local postweld heat treatment;threaded ring lockheat exchanger