Patent ID: 7124490
Filing Date: 2006-10-24
Classification: B21D,B23P,B60D,F16B,Y10T

Abstract:
1. A method of making a shaped steel body having at least one other metal member attached thereto, the method comprising the steps of sequentially: a) heating a steel blank to a temperature in excess of the AC b) positioning the heated steel blank in a shaping die; c) inserting said other metal member in a cold state in said heated steel blank at a defined position in said shaping die; d) closing the die on the blank and on the member and thereby forming the heated steel blank with the metal member therein into said shaped steel body and simultaneously at least partly enclosing said metal member in said shaped steel body; and e) rapidly cooling said shaped steel body formed in step (d) while still in the die to harden same and simultaneously anchor said metal member in said shaped steel body by shrinkage thereof against said metal member utilizing the coefficient of thermal expansion of said body.