Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 6124040 | Composite and process for the production thereof The invention concerns composites substantially consisting of: a cermet material having a binder metal phase of between 5 and 30 mass % and the remainder comprising at least one carbon nitride phase; or a hard metal with a hard material phase of between 7... | 09/26/2000 |
| 5670726 | Cermet and method of producing it In order to improve the toughness characteristics of a cermet alloy, while retaining high resistance to wear, a composition is disclosed which contains 30 to 60% by weight of Ti, 5 to 20% by weight of W, 5 to 15% by weight of Ta, in which up to 70% of the... | 09/23/1997 |
| 5403628 | Process for producing a coated hard-metal cutting body A process for producing a cutting tool includes the steps of subjecting a sintered body to a nitrogen gas pressure treatment conducted under a pressure ranging between 0.2 and 10 MPa and at a temperature between 900° C. to 1300° C. for a period of at le... | 04/04/1995 |
| 5352533 | Ceramic composite body, process for producing a ceramic composite A composite body includes 5 to 40% by mass of SiC whiskers and/or up to 80% by mass SiC lamellae and/or of up to 75% by mass SiC powder, 0.05 to 3% by mass of at least one component selected from the group of Y2 O3, SiO3, ... | 10/04/1994 |
| 5223020 | Hard-metal body The invention relates to a hard-metal body whose hard-metal phase consist of tungsten carbide and whose binder metal phase consists of nickel and chrome. Especially for the enhancement of the corrosion resistance it is proposed that the hard metal contain... | 06/29/1993 |
| 5173107 | Composite hard metal body and process for its production The invention relates to a composite hard metal body of hard material, a binder and embedded reinforcing material, as well as to a process for the production of the composite hard metal body by methods of powder metallurgy. In order to create a composite ... | 12/22/1992 |
| 4944800 | Process for producing a sintered hard metal body and sintered hard metal body produced thereby A sintered hard metal body having improved heat resistance and higher cutting performance is produced by a process including mixing together at least one hard substance, at least one binder material, and at least one of at least one complex carbide and at... | 07/31/1990 |
