Composite and durable forming model with permeability
US4531705A · kind A · utility
52Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1984 |
| Grant date | Jul 30, 1985 |
| Priority date | — |
| Expiry date | Apr 6, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B19/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Proposed models are used for forming into destined shapes liquid, slurry, soft, sheet or lump materials, and are provided with endurance for many times of use and excellent permeability. A basic feature is that aggregates are ferrous or non-ferrous metallic grains and ceramic grains, to which a binder contained in evaporating or consumable substance is added and kneaded, and sintered. The mode has a close hardened layer scattered with metallic oxides on at least a shell. The hardened layer has fine air vents in its thickness. The whole body of a model is 5 to 60% of porosity and more than 100 Kg/cm.sup.2 of compression strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.