Composite and durable forming model with permeability

Details Composite and durable forming model with permeability Composite and durable forming model with permeability

1984-04-06

1985-07-30

Flint, Jr., J. Howard

Static molds

Container-type molding device

Of named component

425405R, 249141, 249 62, B29C 1700, B29C 100

Patent

active

045317054

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.

REFERENCES:
patent: 2841823 (1958-07-01), Van Hartesveldt
patent: 2907070 (1959-10-01), Van Hartesveldt
patent: 3353219 (1967-11-01), Snyder
patent: 3723584 (1973-03-01), Nussbaum
patent: 3932096 (1976-01-01), Kartman
patent: 4125351 (1978-11-01), Alfter et al.
patent: 4307867 (1981-12-01), Shannon
patent: 4380421 (1983-04-01), Morris
patent: 4425411 (1984-01-01), Textor et al

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