Feeding lubricant for cored welding electrode
AssigneeLincoln Global, Inc.
InventorsRadhika Panday, Vaidyanath Rajan, Jean Victoria Reid, Campbell Ian Sidders
Life of this patent
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Abstract
A feeding lubricant for use on a welding electrode comprises about 10 to 40 wt. % of at least one soap-based lubricant, about 40 to 90 wt. % of at least one solid particulate lubricant selected from MoS2, WS2, ZnO, graphite and PTFE and up to 20 wt. % of at least one optional additional particulate lubricant ingredient.
Claims28
A feeding lubricant for use on a welding electrode, the feeding lubricant consisting essentially of about 40 to 90 wt. % of at least one solid particulate lubricant selected from MoS2, WS2, ZnO, graphite and PTFE, up to 20 wt. % of at least one optional additional particulate lubricant ingredient, and at least one soap based lubricant in an amount sufficient so that
- (a) the maximum amount of force needed to drive a 1/16 inch (1.59 mm) diameter welding wire through a flexible supply sheath which is formed from a wire wound cylinder, which is 25 feet long and which is wrapped 1½ times around a 12 inch diameter mandrel is no greater than 22 pounds (˜98 Newtons), and
- (b) produces less than 4 milliliters H2 per 100 grams of deposited weld metal when tested according to ANSI/AWS A4.3,
- this amount of soap based lubricant being about 10 to 40 wt. %.
Dependencies are inferred from the claim text.