Lubricant composition for use on workpieces in the hot forming of metals
US5691282A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1996 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | May 16, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/247
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Lubricant composition for use on workpieces in the hot forming of metals, which contains: PA1 (a.sub.1) 0 to 80 percent by weight of a glass powder, PA1 (a.sub.2) 0 to 50 percent by weight of a glass frit whereby the content of at least one component (a.sub.1) or (a.sub.2) in the lubricant composition is not 0 percent by weight, PA1 (b) 10 to 25 percent by weight of natural or synthetic graphite, PA1 (c) 5 to 20 percent by weight of one or more alkali metal silicates of the general formula Me.sub.2 O.n SiO.sub.2, where Me is lithium, potassium or sodium and n is a number between 1 and 4, PA1 (d) 1 to 6 percent by weight of a water-soluble sodium polymetaphosphate, PA1 (e) 0 to 3 percent by weight of a water-insoluble sodium polymetaphosphate, PA1 (f) 0.5 to 4 percent by weight of a thickener, and PA1 (g) 0 to 1 percent by weight of borax.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.