Coated welding cups

Details Coated welding cups Coated welding cups

1990-03-23

1991-07-23

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219136, B23K 932

Patent

active

050345931

ABSTRACT:
An improved welding cup is made from graphite or ceramic fiber composites, coated with silicon nitride, sialon, boron nitride, or silicon carbide. The cup shows superior resistance to erosion, slagging, and thermal fracture.

REFERENCES:
patent: 2827550 (1955-08-01), Unrath
patent: 3237648 (1963-10-01), Syrigos
patent: 3430837 (1969-03-01), Hein
patent: 3536888 (1970-10-01), Borneman
patent: 3697721 (1972-10-01), Robba et al.
patent: 4575612 (1986-03-01), Prunier
patent: 4672163 (1987-06-01), Matsui et al.

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