Method for hardfacing valves

Details Method for hardfacing valves Method for hardfacing valves

1985-04-02

1987-08-11

Paschall, M. H.

Electric heating

Metal heating

By arc

219121PL, 427 34, 123 4177, B23K 900

Patent

active

046863486

ABSTRACT:
A poppet-type valve having a circumferential seating face including an annular seating area extending between inner and outer radial limits, a circumferential groove formed in the seating face and hardfacing material in the groove, the groove extending radially inwardly from the valve head periphery a sufficient distance beyond the inner radial limit that high temperature deposition of hardfacing material within the groove will not cause substantial dilution by valve head material of the composition of the hardfacing material within the annular seating area.

REFERENCES:
patent: 2458502 (1949-01-01), Cape
patent: 2495731 (1950-01-01), Jennings
patent: 3147747 (1964-09-01), Kittelson
patent: 3599619 (1971-08-01), Kuhn
patent: 3649380 (1972-03-01), Tauschek
patent: 4122817 (1978-10-01), Matlock
patent: 4146654 (1979-03-01), Guyonnet
patent: 4243867 (1981-01-01), Earle et al.
patent: 4262034 (1981-04-01), Anderson
patent: 4371312 (1983-02-01), Tank

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