Method for producing porous sponge like metal of which the shape

Details Method for producing porous sponge like metal of which the shape Method for producing porous sponge like metal of which the shape

1998-08-05

2000-12-19

Mayes, Curtis

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 77, 156155, 156 8923, 156 8928, 156245, B32B 3100, B32B 3112

Patent

active

061623105

ABSTRACT:
A method for producing metal with a porous sponge structure of which the shapes and sizes of the pores are controllable, including steps of selecting organic blanks according to the shapes and sizes of the pores to be shaped, selecting fractory mortar according to whether the sponge like metal to be made is an alloy of high melting point or of low melting point, and steps of dipping with mortar and drying of the organic blanks to have the blanks covered with refractory layers, sintering which carbonize and burn up the organic blanks in the refractory layers forms hollow ceramic balls (with granules of various desired sizes and shapes) which are graded and mixed according to the sponge structure to be arranged, accumulating the balls in a low pressure casting equipment for preheating and founding, thereby the hollow ceramic balls are agglomerated to form the porous sponge like structure which has a single or compound nature under control of low specific weight, compression strength, high toughness and the character of fire-proofing, sound insulation, heat insulation or magnetic wave disturbance-proofing.

REFERENCES:
patent: 3773098 (1973-11-01), Rock
patent: 4917857 (1990-04-01), Jaeckel et al.
patent: 5112697 (1992-05-01), Jin et al.
patent: 5334236 (1994-08-01), Sang et al.
patent: 6024157 (2000-02-01), Donahue et al.

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