Metal working

Details Metal working Metal working

2006-06-27

2006-06-27

Kerns, Kevin P. (Department: 1725)

Electric heating

Metal heating

Nonatmospheric environment at hot spot

C219S121640, C219S137430

Reexamination Certificate

active

07067759

ABSTRACT:
A method of working metal in which molten metal particles are ejected from, for example, a welding electrode or from a metal workpiece being cut or drilled. The ejected molten metal particles are caused to pass through a contact region in which they make contact with a cryogen, for example, liquid nitrogen or solid carbon dioxide. The contact renders the particles non-adherent to any adjacent surface to which the particles would otherwise adhere. Alternatively, the adjacent surface may be cooled by contact with a cryogen so as to render the particles non-adherent thereto.

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