Electric induction heat treatment of an end of tubular material

摘要

A magnetic flux concentrator is used to control the end heating of a tubular material in an electric induction heat treatment process. The magnetic flux concentrator may consist of fixed elements, or a combination of fixed and moveable elements to accommodate end heating of tubular materials having different dimensions or material properties.

主权项

1. An end of tube flux concentrator for induction heat treatment of an end of a tube inserted within a solenoidal induction coil, the end of tube flux concentrator comprising:
a disc base; a plurality of peripheral poles radially distributed around the perimeter of the disc base, each of the plurality of peripheral poles extending generally perpendicularly from a tube-facing side of the disc base to an extended peripheral pole end, the plurality of peripheral poles arranged relative to the tube-facing side of the disc base so that when the disc base is brought into the vicinity of the end of the tube inserted within the solenoidal induction coil the plurality of peripheral poles at least partially surround the exterior of the solenoidal induction coil.