Electric plasma arc powder welded slide layer for rotary fluid p

Details Electric plasma arc powder welded slide layer for rotary fluid p Electric plasma arc powder welded slide layer for rotary fluid p

1989-03-30

1991-06-04

Paschall, M. H.

Electric heating

Metal heating

By arc

21912147, 219 7616, 427 34, 418178, B23K 900

Patent

active

050216295

ABSTRACT:
A vane for a rotary fluid pump and a method for producing the vane are disclosed. The vane has a base vane body and an overlaid welding layer which functions as a sliding layer. The sliding layer is formed by using alloy powders and applying plasma arc to the end face of the base vane body. The alloy powders have high wear resistivity high resistance to thermal seizure and high corrosion resistance. During application of the plasma arc, the alloy powders are supplied, so that first and second layers are presented in the sliding layer. The first layer which is an inner layer is formed of a mixture of a material of the base vane body and the material of the alloy powders, and the second layer which is an outer layer is formed of the alloy powder material only.

REFERENCES:
patent: 4212602 (1980-07-01), Buran et al.
patent: 4376793 (1983-03-01), Jackson
patent: 4739146 (1988-04-01), Lindland et al.

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