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US 5,307,660 AGranted
New water based lubricant composition for cold impact extrusion of spark plug bodies or other metal parts and process
AssigneeAcheson Industries, Inc.
InventorEdmond J. Stoutenburg
Life of this patent
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Abstract
A new water based lubricant composition for cold impact extrusion of spark plug bodies or the like, said composition being free of lower molecular weight flammable aliphatic and alicyclic compounds and comprising: an alkaline soluble thermoplastic acrylic resin binder, polytetrafluoroethylene particulate powder material, an alkaline solubilizing agent to maintain the pH of the composition within the range of approximately 8 to 11, a thickening agent, a defoaming agent, and the balance water; and a novel process of cold forming of metal or steel parts.
Claims4
A process of cold forming metal parts, comprising the steps of:
- (1) preheating the metal parts to a temperature between about 125.degree. F. and about 170.degree. F. by hot water immersion,
- (2) coating said metal parts with a water based lubricant coating composition comprised of:
- (a) about 3% to about 25% by weight of an alkaline soluble thermoplastic acrylic resin binder,
- (b) about 3% to about 20% by weight of polytetrafluoroethylene particulate powder material,
- (c) about 0.1% to about 12% by weight of an alkaline solubilizing agent to maintain the pH of the composition within the range of about 8 to about 11,
- (d) zero to about 6% by weight of a thickening agent,
- (e) zero to about 2% by weight of a defoaming agent,
- (f) the balance water,
- (3) air drying said metal parts,
- (4) forming the coated metal parts in a cold forming machine to make the formed metal parts,
- (5) subjecting the metal parts to a caustic wash and water rinse to remove the residual resin and polytetrafluoroethylene lubricant.
8 more elements
Dependencies are inferred from the claim text.