Accession Number : ADA185173

Title :   The Interaction of DC Plasma Jet with a Melting Metal: Experimental Measurements and Mathematical Description.

Descriptive Note : Final rept. 1 Jan 83-31 Jul 86,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF MATERIALS SCIENCE AND ENGINEERIN G

Personal Author(s) : Szekely, Julian

PDF Url : ADA185173

Report Date : 21 May 1987

Pagination or Media Count : 10

Abstract : This investigation was concerned with the experimental and theoretical study of the interaction of a transferred arc plasma jet with a metal block onto which this jet impinges. Problems of this type are of interest in plasma arc remelting processes and also in welding. The study had both experimental and analytical (mathematical) modelling components. The experimental work involved the construction of an apparatus which is essence consisted of a 20 kW plasma jet impinging onto a hemispherical steel block of 200 mm diameter. The experiment measured the voltage, the current, the plasma gas flow rate and the evolution of the temperature fields as the metal block was heated up and partially melted.

Descriptors :   *PLASMA ARC WELDING, *MASS TRANSFER, ELECTRIC ARCS, PLASMAS(PHYSICS), MELTS, ARC MELTING, MATHEMATICAL MODELS, HEAT TRANSFER, NAVIER STOKES EQUATIONS, PLASMA JETS

Subject Categories : Mfg & Industrial Eng & Control of Product Sys
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE