Method of producing areas of alloy metal on a metal part...

Details Method of producing areas of alloy metal on a metal part... Method of producing areas of alloy metal on a metal part...

B - Operations, Transporting

23

K

117/61

B23K 9/04 (2006.01) B23K 13/00 (2006.01)

Patent

CA 1119898

ABSTRACT OF THE DISCLOSURE A method and apparatus for modifying the surface properties of a metal part in which electric current having a frequency of at least 3000 Hz is supplied to a narrow area on the part by means of contacts, one at each end of the area, and a proximity conductor or is induced therein by an in- duction coil until the metal in the area reaches a temperature at least equal to its melting temperature. A material which will alloy with the metal of the part is added to the molten metal so that when the molten metal is cooled an area of an alloy of the metal and the added material is pro- duced. The added material may be in the form of a gas, powder, salt, wire, rod, bar, foil, etc. and may be applied to the area before, during, or after the melting of the metal of the area. The spacing between the prox- imity conductor or the induction coil and the work is no greater than three times the width of the proximity conductor or the coil conductor.

324492

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