Ceramic welding method with monitored working distance

Details Ceramic welding method with monitored working distance Ceramic welding method with monitored working distance

1992-09-30

1995-01-03

Beck, Shrive

Coating processes

Measuring, testing, or indicating

427453, 118713, 264 30, B05D 108

Patent

active

053784936

ABSTRACT:
The invention concerns a ceramic welding process in which a mixture of refractory and fuel particles is projected from an outlet at an end of a lance in a gas stream against a target surface where the fuel particles combust in a reaction zone to produce heat to soften or melt the projected refractory particles and thereby form a coherent refractory weld mass. A method of monitoring the distance between the lance outlet and the reaction zone is disclosed in which the reaction zone and at least part of the gap between that reaction zone and the lance outlet is monitored by a camera and an electronic signal is produced indicative of the distance ("the working distance") between the lance outlet and the reaction zone.

REFERENCES:
patent: 4218989 (1980-08-01), Fujita et al.
patent: 4301998 (1981-11-01), Rodway
patent: 4649858 (1987-03-01), Sakai et al.
patent: 5047612 (1991-09-01), Savkar et al.
patent: 5100594 (1992-03-01), Zvosec et al.
Moran, A. L., et al., "Developing Intellegen . . . ", JOM, vol. 42, No. 7, Jul., 1990, pp. 21-24.

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