Exothermic welding apparatus including a baffle cover assembly

Details Exothermic welding apparatus including a baffle cover assembly Exothermic welding apparatus including a baffle cover assembly

1988-08-29

1989-11-21

Godici, Nicholas P.

Metal fusion bonding

Including means to apply flux or filler to work or applicator

228198, 228241, 164 54, 266167, B23K 2300

Patent

active

048816779

ABSTRACT:
An improved thermite reaction containment vessel and method of using the same includes a crucible in which the exothermic material is contained and which is connected at its lower end via a tap hole to a weld chamber in which the parts to be welded are positioned. On top of the crucible is positioned a baffle assembly which includes a plurality of expansion chambers which allows the escaping gas to expand and be reduced in velocity. As the gases move from one expansion chamber to the next the gases change direction. The expansion, direction change and the large surface area of the baffle assembly allows the gases to slow and cool before being exhausted leaving behind molten metal spatter or flame and greatly reducing the amount of smoke exhausted since particulate matter is accumulated on the baffle interior surface. Several forms of baffle assembly are disclosed using inverted stacked metal cups. The baffle assembly may be used in conjucntion with a filter assembly and remote electrical ignition or without a filter assembly and conventional starting material, with such matrial being ignited through the top of the baffle assembly.

REFERENCES:
patent: 1178325 (1916-04-01), Lang
patent: 1838357 (1931-12-01), Bottrill
patent: 2462256 (1949-02-01), Charman et al.
patent: 2821000 (1958-01-01), Nouveau
patent: 3166805 (1965-01-01), Fritz et al.
patent: 3933191 (1976-01-01), Adams et al.
patent: 3984044 (1976-10-01), Breton et al.

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