Metallurgical apparatus – Means for cutting solid metal with heat – e.g. – blowpipes – Means for removing surface material – e.g. – scarfing
Patent
1990-11-01
1993-01-26
Bean, R.
Metallurgical apparatus
Means for cutting solid metal with heat, e.g., blowpipes
Means for removing surface material, e.g., scarfing
266200, 266261, 21912137, B23K 706
Patent
active
051820730
ABSTRACT:
An apparatus for eliminating chevron cracks or other imperfections in the surface of elongate billets as billets pass vertically downwardly through a heating chamber, including a plurality of plasma arc torches. The heating chamber contains a billet mold having an opening complementary in size and shape to the cross-sectional shape of the billet. Heat imparted to the billet in the upper portion of the chamber melts surface portions of the billet. Molten material discharged from the surface portions of the billet forms a pool in an area above the mold opening. As the billet passes through the pool, some of the molten material reattaches itself to the billet surfaces. Billet conveyors pivotally movable between horizontal and vertical positions transport billets to and from the heating chamber, and control the rate at which the billets move through such chamber and through a cooling chamber located beneath the heating chamber.
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patent: 2487974 (1949-11-01), Kirk
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patent: 4549065 (1985-10-01), Camacho et al.
patent: 4587397 (1986-05-01), Camacho et al.
patent: 4620840 (1986-11-01), Hilge et al.
Bean R.
Phipps Margery S.
Plasma Energy Corporation
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