Masking cylinder bore extremities from internal thermal spraying

Details Masking cylinder bore extremities from internal thermal spraying Masking cylinder bore extremities from internal thermal spraying

1995-10-30

1996-11-12

Bareford, Katherine

Coating processes

Spray coating utilizing flame or plasma heat

Nonuniform or patterned coating

427236, 427239, B05D 108, B05D 132

Patent

active

055738141

ABSTRACT:
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.

REFERENCES:
patent: 4178397 (1979-12-01), Lovis
patent: 4264647 (1981-04-01), Trevorrow
patent: 4743462 (1988-05-01), Radzavich et al.
patent: 5270085 (1993-12-01), Horiki et al.
patent: 5271967 (1993-12-01), Kramev et al.
patent: 5358753 (1994-10-01), Rao et al.

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