Long carbonaceous molding, long carbonaceous product, and method of production thereof
AssigneeToyo Tanso Co., Ltd.
InventorsHiroaki Ogura, Junji Toyota, Hiroshi Hayakawa, Hidehiko Nozaki
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Abstract
Long carbonaceous moldings and long carbonaceous products as well as methods of production thereof are provided by which carbonaceous products can be obtained without allowing twisting or curving and with less frequent occurrence of cracking etc., even when subjected to heat treatment, and which are excellent in mass productivity. The long carbonaceous moldings have an aspect ratio of 3 to 20 and show fluctuations in the density thereof of not more than 0.05 Mg/m3 throughout the whole moldings.
Claims15
A method of producing a carbonaceous molding, the method comprising
- providing a dry isostatic press molding apparatus comprising a processing chamber and a metal insert in the processing chamber;
- adding to the processing chamber around the metal insert a raw material powder prepared by
- kneading a carbonaceous filler with a binding agent to produce a mixture and
- grinding the mixture to an average particle size of 1 to 150 μm;
- and
- dry isostatic press molding the raw material powder added to the processing chamber to produce the carbonaceous molding, wherein
- the carbonaceous molding has a density that fluctuates over the entire carbonaceous molding by not more than 0.05 Mg/m3;
- and
- the carbonaceous molding has an aspect ratio of 3 to 20.
A method of producing a carbonaceous molding, the method comprising
- providing a dry isostatic press molding apparatus comprising a processing chamber and a metal insert in the processing chamber;
- adding to the processing chamber around the metal insert a raw material powder prepared by
- kneading a carbonaceous filler with a binding agent to produce a mixture,
- grinding the mixture to a ground powder having an average particle size of 1 to 150 μm and
- blending the ground powder with at least one other powder having an average particle size of 5 to 100 μm selected from the group consisting of a metal powder, a metal compound powder and a ceramic powder, where a mixing ratio between the carbonaceous filler and the at least one other powder is 0.01 to 1 by mass;
- and
- dry isostatic press molding the raw material powder added to the processing chamber to produce the carbonaceous molding, wherein
- the carbonaceous molding has a density that fluctuates over the entire carbonaceous molding by not more than 0.05 Mg/m3;
- and
- the carbonaceous molding has an aspect ratio of 3 to 20.
Dependencies are inferred from the claim text.