Lubricant system for cold forming, process and composition therefor

a technology of cold forming and lubricant, which is applied in the direction of lubricant composition, additives, metal material coating processes, etc., can solve the problems of inability to form or otherwise be practicable, calcium in the coating, and the inability to significantly improve the refinement of grain refinement, so as to improve the adhesion the life of the second lubricant bath, the effect of low calcium conten
US20060060265A1Inactive Publication Date: 2006-03-23HENKEL KGAA
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
HENKEL KGAA
Publication Date
2006-03-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention is directed to a combination of a conditioner bath and a calcium modified zinc phosphating solution optionally containing hydroxylamine which provide an improved phosphate coating on the surface of ferrous metal articles. In a preferred embodiment, the treatment process further comprises coating the workpiece with a second lubricant. The three treatments work together to provide finer grained phosphate coatings, longer life of the second lubricant bath and improved adherence of the second lubricant, as compared to a similar phosphating bath that is used alone or with a similar second lubricant.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of U.S. Provisional Application Ser. No. 60 / 612,134 filed Sep. 21, 2004, incorporated herein by reference.FIELD OF THE INVENTION

[0002] The invention is directed to a combination of a conditioner bath and a calcium modified zinc phosphating solution containing hydroxylamine which provide an improved phosphate coating on the surface of ferrous metal articles. BACKGROUND OF THE INVENTION

[0003] Metal phosphate coating solutions are dilute solutions of phosphoric acid and other chemicals which are applied to the surface of metal; the surface of the metal reacts with the solution and forms an integral layer (on the surface of the metal) of substantially insoluble crystalline or amorphous phosphate. This layer is applied primarily for protection from corrosion, or as a base for the application of a second coating (e.g., paint), or for lubrication purposes. The metal substrate can be contacted with the acid...

Claims

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