METHOD OF MOLYBDENUM OF HIGH PURITY MANUFACTURING

FIELD: metallurgy. ^ SUBSTANCE: method of molybdenum of high purity manufacturing including vacuum refining by means of electron-beam remelting with receiving of ingot and electroarc vacuum melting of the received ingot in arc-furnace with crystalliser. At that electroarc melting is implemented with...

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Bibliographische Detailangaben
Hauptverfasser:	GLEBOVSKIJ VADIM GEORGIEVICH, SHTINOV EVGENIJ DMITRIEVICH, KOCHETOV OLEG SAVEL'EVICH, PASHKOV ALEKSEJ IVANOVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	FIELD: metallurgy. ^ SUBSTANCE: method of molybdenum of high purity manufacturing including vacuum refining by means of electron-beam remelting with receiving of ingot and electroarc vacuum melting of the received ingot in arc-furnace with crystalliser. At that electroarc melting is implemented with cerametallic blanks, prepared from sintered molybdenum. Electroarc melting is implemented at the velocity of 0.5-0.6 kg/min. Electroarc vacuum melting is implemented at intensive electro-magnetic mixing at influence on melt of electromagnetic field with formation of fine-grain structure in ingots of molybdenum of high purity. Ratio between diameters of ingots of electron-beam remelting and electroarc vacuum melting is d1/d2=0.6. ^ EFFECT: improving and increasing of stability of physical- mechanical characteristic of molybdenum during the receiving of ingots of high purity and optimal macrostructure. ^ 2 cl, 2 tbl, 1 ex