| US 7,399,942 B2 | ||
| Method for projection bonding of telescoped tubes | ||
| Pei-Chung Wang, Troy, Mich. (US); James F. Hengel, Romeo, Mich. (US); John D. Fickes, Brighton, Mich. (US); John F. Cantalin, Rochester Hills, Mich. (US); and Timothy J. Roggenkamp, Brighton, Mich. (US) | ||
| Assigned to GM Global Technology Operations, Inc., Detroit, Mich. (US) | ||
| Filed on Jan. 06, 2006, as Appl. No. 11/326,882. | ||
| Prior Publication US 2007/0158312 A1, Jul. 12, 2007 | ||
| Int. Cl. B23K 11/14 (2006.01) | ||
| U.S. Cl. 219—93 [219/59.1; 219/92] | 17 Claims |
| 1. A method attaching together an inner tube and an outer tube that are telescoped together, comprising:
forming an annular inward facing projection on the outer tube for contacting with the outside of the inner tube when the tubes
are telescoped together;
forming an annular outer facing projection on the inner tube for contacting with the inside of the outer tube when the tubes
are telescoped together;
placing adhesive-sealer on one of the tubes for contacting with the other tube when the tubes are telescoped together;
conducting weld current through the telescoped together tubes;
and the tubes are of dissimilar metal, and a brazing material is plated onto one of the tubes and the weld current conducted
to the tubes causes the projections to be brazed to the respective tube in contact therewith.
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