Method and apparatus for the production of wire springs

Details Method and apparatus for the production of wire springs Method and apparatus for the production of wire springs

C - Chemistry, Metallurgy

21

D

38/4

C21D 9/02 (2006.01) B21F 35/00 (2006.01)

Patent

CA 1071071

Abstract of the Disclosure In the production of bent metal wire springs, the bent springs are taken individually from a bending machine and conveyed to an electrical heat-tempering means where they are heated by resistance heating by passing a current through them. Then, while still hot from the heat-tempering, they are immersed in a bath of thermoplastics material in powder form so that the material melts and becomes coated onto the spring.

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