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US 5,346,660 AGranted
Method of manufacturing powder molding
AssigneeToto Ltd.
InventorAkio Matsumoto
Life of this patent
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Abstract
A powder molding is manufactured from various powdery materials including an inorganic material, an organic material, a metallic material, etc., according to a wet forming process. A powdery material and a solvent are mixed into a mixture so that the mixture exhibits a dilatant flow. The mixture is molded into a molding of desired shape, and then the molding is dried.
Claims12
A method of manufacturing a powdery molding of a large packing fraction by slip casting, comprising the steps of:
- mixing a powdery material and a solvent into a mixture which exhibits a dilatant flow and which has a volume fraction F1 of said powdery material;
- pouring said mixture into a porous mold to make a molding of desired shape which has a volume fraction F2 of said powdery material, said volume fraction F2 being greater than said volume fraction F1;
- drying said molding, said dried molding having a volume fraction F3 of said powdery material;
- and
- wherein said mixing step further comprises adjusting said volume fraction F1 of said mixture to a value at least as large as a value where a resulting value of said volume fraction F3 abruptly rises relative to a small marginal increase of said volume fraction F1.
2 more elements
A method of manufacturing a powdery molding with a large packing fraction of a powdery material by slip casting, comprising the steps of:
- mixing a powdery material and a solvent into a mixture which has a volume fraction F1 of said powdery material ranging from 0.58 to 0.75;
- pouring said mixture into a porous mold to make a molding of desired shape which has a volume fraction F2 of said powdery material, said volume fraction F2 being greater than said volume fraction F1;
- drying said molding, said dried molding having a volume fraction F3 of said powdery material;
- and
- wherein said mixing step further comprises adjusting said volume fraction F1 of said mixture to a value at least as large as a value where a resulting value of said volume fraction F3 abruptly rises relative to a small marginal increase of said volume fraction F1.
2 more elements
Dependencies are inferred from the claim text.