Title: Process for increasing the streagth of single-wall tubular components and apparatus for the process
Application Number: 85101782 Application Date: 1985.04.01
Publication Number: 1006633 Publication Date: 1987.01.10
Approval Pub. Date: Granted Pub. Date: 1988.09.28
International Classifi-cation: B23P9/02,C21D7/00
Applicant(s) Name: Voest-Alpine AG Address:
Inventor(s) Name:
Attorney & Agent: SONG MIN
Abstract:
     For increasing the strength and endurance of inner pressure of single-wall tubular components, heat is applied on outer limited range of the tube and heating is applied longitudinal along the direction of the tube. Meanwhile, radical outward pressure is applied from inner of the tube, best during applying the pressure. Inner wall of the tube is cooled. During heating, HF induced coil is moving along longitudinal direction around the tube. A column body, which is inserted into the tube, is with sealing rings at its ends and a smaller diameter at its middle portion. So, a circular space is formed which is filled with water. It can be cooled or loaded by hydraulic pressure.
Time: 4
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