DRAWING OF TUNGSTEN OR MOLYBDENUM WIRE

PURPOSE:To obtain in a high yield a W or Mo wire free of defects such as crack or cut, by coating the surface of a rod obtd. by forging sintered W or Mo with a graphite suspension of a specified viscosity followed by wire drawing. CONSTITUTION:The surface of a W or Mo rod of diameter 1-3mm. obtd. by...

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Bibliographic Details
Main Author ITOU MASAMI
Format Patent
LanguageEnglish
Published 09.03.1983
Subjects
AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL
CHEMISTRY
FUELS
INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS
LUBRICANTS
LUBRICATING COMPOSITIONS
MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
METALLURGY
PEAT
PERFORMING OPERATIONS
PETROLEUM, GAS OR COKE INDUSTRIES
PUNCHING METAL
TECHNICAL GASES CONTAINING CARBON MONOXIDE
TRANSPORTING
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Summary:PURPOSE:To obtain in a high yield a W or Mo wire free of defects such as crack or cut, by coating the surface of a rod obtd. by forging sintered W or Mo with a graphite suspension of a specified viscosity followed by wire drawing. CONSTITUTION:The surface of a W or Mo rod of diameter 1-3mm. obtd. by forging a pillar-like sintered body obtd. by molding and sintering a W or Mo powder, is coated with a graphite suspension of viscosity 10-120cP at normal temp. prepd. by suspending a graphite powder and, if necessary, adding a dispersant such as methylcellulose, a binder such as sugar or a pH adjustor such as ammonia to water and/or an org. solvent, and said rod is subjected to wire drawing at a drawing rate of 6-15m/sec.
Bibliography:Application Number: JP19810137833