METHOD OF CASTING AMORPHOUS AND MICROCRYSTALLINE MICROWIRES

A method for preparing glass-coated microwires is provided. A metal in a glass tube is superheated in a high frequency induction field, whereby the glass tube softens. A thin capillary tube is drawn from the softened glass and the glass tube fills with molten metal. The metal-filled capillary enters...

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Bibliographische Detailangaben
Hauptverfasser:	RIVIERE, ALFREDO V. CALLE EL LINDERO, FARMAKOVSKY, BORIS VLADIMIROVICH, SZEKELY, JULIAN, SALUJA, NAVTEJ SINGH, KHINSKY, ALEXANDER PAVLOVICH, KALOGINA, KARINA VASILIEVNA, GORYNIN, IGOR VASILIEVICH NABEREZNAYA
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY GLASS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY MINERAL OR SLAG WOOL PERFORMING OPERATIONS POWDER METALLURGY PUNCHING METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	A method for preparing glass-coated microwires is provided. A metal in a glass tube is superheated in a high frequency induction field, whereby the glass tube softens. A thin capillary tube is drawn from the softened glass and the glass tube fills with molten metal. The metal-filled capillary enters a cooling zone in the superheated state and the rate of cooling is controlled such that a microcrystalline or amorphous metal microstructure is obtained. The cooling zone includes a stream of cooling liquid through which the capillary passes. The microstructure of the microwire is controlled by choice of amorphisizers, cooling rate, nature of the cooling liquid, location of the cooling stream, dwell time in the cooling stream and degree of superheating and supercooling of the metal.