Powder surface welding method

Details Powder surface welding method Powder surface welding method

1984-10-23

1986-11-04

Paschall, M. H.

Electric heating

Metal heating

By arc

219121PY, 219121PQ, 219 7616, 427 34, B23K 1500

Patent

active

046211837

ABSTRACT:
A powder surface welding method using a plasma torch is disclosed, which uses a surfacing powder containing not less than 95% of particles having a particle size of -60 mesh to +250 mesh. This welding is carried out at a welding speed of not less than 3.8 mm/sec without weaving the plasma torch. Particularly, the distance L between the end of the plasma arc jetting nozzle in the plasma torch and the base material to be surfaced is regulated to be within a range of 0.5 Ds+6.ltoreq.L.ltoreq.Ds+8 , and the offset angle .theta. of the axial center of the plasma torch with respect to the rotational center of the base material is regulated to be within a range of 7.degree..ltoreq.0.ltoreq.20.degree..

REFERENCES:
patent: 3304402 (1967-02-01), Thorpe
patent: 3676638 (1972-07-01), Stand
patent: 3823302 (1974-07-01), Muehlberger
patent: 4125754 (1978-11-01), Wasserman et al.
patent: 4262034 (1981-04-01), Anderson
patent: 4370538 (1983-01-01), Browning
patent: 4371312 (1983-02-01), Tank

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