Method for measuring the extent of shielding function of an arc

Details Method for measuring the extent of shielding function of an arc Method for measuring the extent of shielding function of an arc

1976-01-07

1978-06-13

Reynolds, Bruce A.

Electric heating

Metal heating

Nonatmospheric environment at hot spot

21913741, 356 36, B23K 916

Patent

active

040950808

ABSTRACT:
The extent of shielding function of an arc atmosphere is measured by the concentration of nitrogen oxide in the arc atmosphere. The concentration of nitrogen oxide in the arc atmosphere is measured by a nitrogen oxide measuring device. The measured value is indicated by an indicator. When the measured value exceeds a predetermined reference value, an alarm device is operated or a welding operation is stopped. Either a supply of shielding gas which forms an arc atmosphere is controlled, or a flow of fume is controlled through a fume exhaust device, as a function of the measured value.

REFERENCES:
patent: 3432637 (1969-03-01), Witting
patent: 3524038 (1970-08-01), O'Kelly, Jr.
patent: 3562581 (1971-02-01), Sonju
patent: 3791743 (1974-02-01), Cody et al.

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