Method of making measuring elements such as gauge blocks

Details Method of making measuring elements such as gauge blocks Method of making measuring elements such as gauge blocks

1974-05-02

1976-05-11

Jung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

33168R, 33174H, C23C 1500, G01B 330

Patent

active

039560929

ABSTRACT:
A method for the preparation of very accurate measuring surfaces on measuring elements such as gauge blocks, surface plates, and the like. In one embodiment of the inventive method, the measuring surface is prelapped to a level of two to five microns below the desired final level. Thereafter, the surface is sputter coated with a hard ceramic or cermet layer with a thickness of three to ten microns, and finally the surface is lapped until the final desired level is reached. The invention also comprehends measuring elements made according to the novel method.

REFERENCES:
patent: 1887372 (1932-11-01), Emmons
patent: 2772483 (1956-12-01), Gierlich
patent: 3121643 (1964-02-01), Eisenberg
patent: 3655544 (1972-04-01), Rairden
patent: 3709809 (1973-01-01), Wright et al.
Berry et al., "Thin Film Technology," Van Nostrand Reinhold (1968), pp. 198, 199, 214.

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