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Tungsten Carbide Print Wire Fabrication

IP.com Disclosure Number: IPCOM000089643D
Original Publication Date: 1977-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Travieso, R: AUTHOR

Abstract

A method for making tungsten carbide (WC) wire for use as print wires, at lower cost and with better properties, including improved durability, consists of depositing a coating of the tungsten carbide on a substrate filament, such coating being produced by physical or chemical vapor deposition. Vapor-deposited tungsten carbide is tougher than tungsten carbide deposited by other methods, such as by sintering.

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Tungsten Carbide Print Wire Fabrication

A method for making tungsten carbide (WC) wire for use as print wires, at lower cost and with better properties, including improved durability, consists of depositing a coating of the tungsten carbide on a substrate filament, such coating being produced by physical or chemical vapor deposition. Vapor-deposited tungsten carbide is tougher than tungsten carbide deposited by other methods, such as by sintering.

A suitable substrate material for the filament is tungsten (W) or molybdenum (Mo). The size of the filament may vary from .001'' to .004'', while the thickness of the WC deposit may vary from .001'' to .006''. The thickness tolerance of the deposit may be +/-.0001''. A similar technique has been used heretofore for making boron-coated filaments, and has proven to be suitable for continuous production line use.

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