GERALD D. UTTRACHI netwelding（杰拉尔德·d·UTTRACHInetwelding）.pdf

W A Technology All Aluminum- C7 Corvette Chassis (w/added weld repair info) The new C7 Stingray employs and all aluminum frame. In the Z06 the main hydroformed frame was a single section and had to employ a compromised uniform wall thickness front to rear. The C7 all aluminum frame is made from 10 castings, 38 extrusions, 76 stampings, and 3 hydroformed parts. The center section of the perimeter frame is still hydroformed but of a thickness selected just for that sections strength requirements. It is connected to a casting containing the properly located threads for suspension and front cradle cross member attachment. Extending from the casting, to the front, is a lighter weight extrusion and structural member that is designed to crush in a crash. The windshield frame and firewall support are made of a number of separate pieces joined together to make a ridged assembly. The frame is 57% stiffer and 100 pounds lighter than the previous C6 corvette steel frame. Joining The Pieces GM invented and patented a new resistance spot we