Matched Piece Lapping

Matched Piece Lapping

Matched Piece Lapping - In matched piece lapping, two workpiece surfaces separated by a layer of abrasive mixed with a vehicle are rubbed against each other. Remember, no separate lap is required.

Each workpiece drives the abrasives so that the grit particles act on the opposing surfaces. Irregularities that prevent the surfaces from fitting together precisely are thus eliminated, and the surfaces are mated.

Matched piece lapping enables mating parts (such as the heads and blocks of I.C. engines) to form liquidtight or gastight seals without the need of gaskets. Other common uses of matchedpiece lapping are for fitting tapered valve components and for mating two or more gears in a set.