| 摘要 |
PROBLEM TO BE SOLVED: To provide a quenching apparatus capable of surely quenching with less fear of uneven quenching and deformation with respect to a hollow member. SOLUTION: This quenching apparatus has: a set of inner part restraining tools 3 having the outer shapes almost corresponding to the shapes of the respective inner peripheries at both end parts of the cylindrical hollow member 1 opened at both end parts; end part restraining tools provided with a set of outer part restraining tools 2; abutting tools 4, 5 holding by abutting a part in the hollow member 1; and a means for performing cooling by inserting the inner restraining tools 3 at both end parts of the heated hollow member under abutting state of the abutting tools 4, 5 at a prescribed position. That is, the intrusion of cooling liquid into the inner part of the hollow member is restrained by inserting the inner part restraining tools at both end parts of the hollow member and thus, the cooling unevenness is restrained and also, the strain caused by the end part restraining tools and the abutting tools, is restrained. COPYRIGHT: (C)2006,JPO&NCIPI
|
