Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Organic phosphorus compound – wherein the phosphorus is...
Reexamination Certificate
2000-04-03
2001-10-09
Howard, Jacqueline V. (Department: 1764)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Organic phosphorus compound, wherein the phosphorus is...
C508S485000
Reexamination Certificate
active
06300293
ABSTRACT:
This invention relates to a lubricant composition for use in metal working operations; more especially for use in metal-deforming processes, such as, for example, punching, pressing, forming and drawing processes. The invention is especially useful when the metal involved in such a process is iron or an iron-containing alloy or is aluminium.
In such metal-deforming processes, especially severe operations on aluminium and steels, the lubricant employed must have the ability to lubricate fully throughout the process. An example of a severe operation is a three stage forming/drawing operation using mild steel to form a cylinder 14.0 cm diameter, and 22.9 cm long. This process is normally lubricated with a lubricant at an operating temperature of 40 to 70° C. However, known lubricants result in substantial amounts of residue depositing on the formed/drawn metal-product, which product then has to be cleaned or degreased before it can pass to a further processing step, such as painting or dip-varnishing.
It is an object of the present invention to provide a lubricating composition suitable for use in metal or metal alloy deforming processes, which composition has significantly decreased residue-forming characteristics while still retaining good lubricity characteristics.
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Allocca Joseph J.
ExxonMobil Research and Engineering Company
Howard Jacqueline V.
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