Piston having laser hardened primary compression ring groove...

Details Piston having laser hardened primary compression ring groove... Piston having laser hardened primary compression ring groove...

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 1/00 (2006.01) C21D 1/09 (2006.01) C21D 9/00 (2006.01) F16J 9/00 (2006.01)

Patent

CA 2148731

The piston made in accordance with the teachings herein includes a primary compression ring groove, a bottom and rear wall surface of which are hardened by the method of laser hardening. The method includes the steps of spraying the primary groove with a graphite spray and then directing an angled elliptical in cross section laser beam at the bottom surface of the groove while rotating the cylinder head at predetermined parameters.

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