Method for machining metal work

Details Method for machining metal work Method for machining metal work

1975-09-02

1977-05-24

Klein, David

Gas separation: apparatus

Magnetic separating means

90 62R, 219 69M, G03G 800

Patent

active

040253384

ABSTRACT:
A process for machining metal work comprising forming a marked-off image from an image-forming material on a surface of a metal work or on a recording layer provided on the surface of the metal work and subsequently machining the metal work by machine cutting and/or oil immersion electrospark machining on the basis of the marked-off image, and including applying a protective resin layer on the image-bearing surface of the metal work prior to any metal machining, the resin layer comprising a mixture of nitrocellulose and a methacrylic polymer in a weight ratio ranging from about 80:20 to 40:60 of the nitrocellulose to the methacrylic polymer and not hindering the viewing of the image, and the methacrylic polymer mainly comprising methyl methacrylate and having a glass transition temperature of higher than about 85.degree. C.

REFERENCES:
patent: 732154 (1903-06-01), Barr
patent: 3061708 (1962-10-01), Pfan
patent: 3588430 (1971-06-01), Appel et al.
patent: 3648013 (1972-03-01), Stayner et al.
patent: 3669859 (1972-06-01), Merrill
patent: 3813267 (1974-05-01), Honjo et al.

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