Method for reducing operating noise of the air-carbon arc cuttin

Details Method for reducing operating noise of the air-carbon arc cuttin Method for reducing operating noise of the air-carbon arc cuttin

1979-05-10

1981-03-24

Kucia, Richard R.

Electric heating

Metal heating

Cutting or disintegrating

219 69R, 219 70, B23K 900

Patent

active

042582440

ABSTRACT:
The operating noise level of the air-carbon arc cutting and gouging process can be reduced by controlling the air velocity in the area where the air impinges on the arc column to between 90 and 170 feet per second. Further noise reduction can be achieved through selection of electrode composition, sound attenuating material juxtaposed to the operator's ears, control of arc voltage level and electrode stick-out. Velocity control can be achieved by modifications to existing air-carbon arc cutting and gouging torches.

REFERENCES:
patent: 2398427 (1946-04-01), Heidinger
patent: 2527490 (1950-10-01), Adams
patent: 2706236 (1955-04-01), Stepath
patent: 3059093 (1962-10-01), Norcross
patent: 3102827 (1963-09-01), Kriewall
patent: 3573419 (1971-04-01), Henderson
patent: 3835288 (1974-09-01), Henderson
patent: 4090057 (1978-05-01), Okada
American Welding Society, Recommended Practices for Air Carbon-Arc Gouging and Cutting, AWS, Miami, Fla., 1973, pp. 2 & 3.

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