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Flat Lapping Experts

Metal Injection, Molded Covers

The Challenge:
Design, build, and maintain special tooling to accommodate the post on the non-lapped (back) surface. Lap Flat to obtain appropriate finish. Deburr all areas and ultrasonic clean.

Part Specifications

Material Metal  Injection-Molded 303 S.S.
Previous Operation Sintering
Dimensions Approximately 3/4" O/D/ with (2) 1/2" projections and a 5/16" dia. post opposite the lapped surface.

Pre-machined Condition

Thickness .138" .002"
Surface Finish As Molded
Flatness .004"
Parallelism .003"
Presentation The next step after molding is 
to lap one side to produce 
a sealing surface.


Thickness .133" .002", 1.33CpK Minimum
Surface Finish 32 RA
Flatness .0005"
Parallelism .00"
Notes Lapping replaced machining by reducing costs, and generating less burr.

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