THE ARC-MELTING OF NIOBIUM, TANTALUM, MOLYBDENUM AND TUNGSTEN

Journal Article · Thu Dec 01 04:00:00 EST 1960 · J. Less-Common Metals

DOI:https://doi.org/10.1016/0022-5088(60)90024-2· OSTI ID:4079804

Moss, A R; Richards, D T

An historical survey of the various methods used for arcmelting refractory metals is followed by a discussion on the modern arc-melting processes and techniques, including multiple-melting and semicontinuous casting. Detailed consideration-is given to operating conditions in general, deoxidation practices, and methods of adding alloying elements. Particular attention is given to alloy segregation and other defects in ingots and to the means that may be adopted to overcome their occurrence. It is believed that the most satisfactory method of producing homogeneous high-purity ingots is to combine multiple-melting with the continuous-casting technique. (auth)

• Research Organization: Armament Research and Development Establishment, Fort Halstead, Kent, Eng.
• NSA Number: NSA-15-011551
• OSTI ID: 4079804
• Journal Information: J. Less-Common Metals, Journal Name: J. Less-Common Metals Vol. Vol: 2
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CASTING
DEFECTS
ELECTRIC ARCS
IMPURITIES
MELTING
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM
NIOBIUM
PRODUCTION
REDUCTION
REFRACTORIES
RODS
TANTALUM
TUNGSTEN