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Progress in Plasma Processing of Materials, 2001

ISBN:
1-56700-165-3 (Print)

A Thermal Analysis of Surface Quality Obtained With Plasma Arc Cutting

H. Valetoux
Laboratoire de Sciences des Precedes Ceramiques et Traitements de Surface (SCPTS), CNRS UMR 6638, Faculte des Sciences de Limoges 123 avenue Albert Thomas, 87060 Limoges Cedex France

Mohammed El Ganaoui
Sciences des Procedes Ceramiques et des Traitements de Surface (SPCTS), UMR CNRS 6638, Faculte des Sciences de Limoges 123, av. A. Thomas - 87060 Limoges Cedex

J. F. Coudert
Laboratoire Sciences des Procédés Céramiques et Traitements de Surface, UMR-CNRS 6638, Université de Limoges, 87060 Limoges Cedex, France

Pierre Fauchais
Laboratoire Sciences des Procedes Ceramiques et de Traitements de Surface UMR CNRS 6638 University of Limoges 123 avenue Albert Thomas, 87060 LIMOGES - France

Abstract

Plasma transferred arc is a flexible and adaptive process for cutting metals of various chemical compositions and large dimensions. Surfaces of metallic materials plasma cut with or without oxygen as plasma forming gas exhibit however some defects, involving drosses, bevels and striations. An experimental study was conducted in order to evaluate qualitatively the effects of the operating parameters on the cut quality and to highlight possible mechanisms responsible for striatum.