Heat treatment of helical springs or similarly shaped...

Details Heat treatment of helical springs or similarly shaped... Heat treatment of helical springs or similarly shaped...

C - Chemistry, Metallurgy

21

D

C21D 9/02 (2006.01) C21D 1/40 (2006.01)

Patent

CA 2712179

Apparatus and method are provided for metallurgical heat treatment of coil springs, or similarly shaped workpieces and articles of manufacture, by electric resistance heating along the entire length of the workpiece so that the ends of the workpiece can be heat treated to the same degree and quality as the section of the workpiece between its two ends.

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