Production of ultra clean gas-atomized powder by the plasma heated tundish technique

Book · Tue Dec 31 00:00:00 EST 1996

OSTI ID:442836

Tingskog, T A ^[1]; Andersson, V ^[2]

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1. Anval Inc., Rutherford, NJ (United States)
2. Anval Nyby Powder A.B., Torshalla (Sweden)

The paper describes the improvements in cleanliness for different types of gas atomized powders produced by holding the melt in a Plasma Heated Tundish (PHT) before atomization. The cleanliness is measured on Hot Isostatically Pressed (HIP) or extruded samples. Significant improvements in slag levels and material properties have been achieved. On extruded powder metallurgy stainless steel and nickel alloy tubes, the rejection rate in ultra-sonic testing was reduced drastically. Tool steels and high speed steels have greatly improved ductility and bend strength.

• OSTI ID: 442836
• Report Number(s): CONF-960515-; ISBN 0-87170-568-0; TRN: IM9712%%261
• Resource Relation: Conference: International conference on hot isostatic pressing, Andover, MA (United States), 20-22 May 1996; Other Information: PBD: 1996; Related Information: Is Part Of Hot isostatic pressing: Conference proceedings; Froes, F.H.; Hebeisen, J.; Widmer, R. [eds.]; PB: 312 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ATOMIZATION
ALLOYS
LIQUID METALS
PLASMA HEATING
ARGON
IMPURITIES
EXTRUSION
HOT PRESSING
METALLOGRAPHY
EXPERIMENTAL DATA