C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 4/02 (2006.01) B05B 13/06 (2006.01) B05B 15/04 (2006.01) C23C 4/00 (2006.01) C23C 4/16 (2006.01)
Patent
CA 2186659
Method of masking one or more extremities of a cylinder bore from internal thermal spraying, when using a rotary gun inserted from one end of the bore, by essentially the steps of: (a) supporting one or more inflatable mask members adjacent an end of the bore wall; (b) pressurizing the inflatable mask member to expand and annularly engage an end of the bore, the mask being constituted of an inflatable and collapsible air tight bag of heat resistant (fiberglass) cloth coated on opposite sides with a sacrificial heat resistant non-stick coating (silicone). The inflatable characteristic of the mask member allows it to conform to the periphery of the cylinder bore extremities, and allows it to be easily installed in or through the component in its deflated condition. The mask is reusable by being comprised of coating material that may gradually be sacrificed to heat and wear of the over spray.
Ford Motor Company Of Canada Limited
Sim & Mcburney
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