| 摘要 |
PROBLEM TO BE SOLVED: To provide a producing method of sintered body which can easily obtain a metallic product having wide degree of freedom in the usable metal and good dimensional precision. SOLUTION: A compact body having a prescribed shape (cross-sectional shape) and dimension, is produced by using metallic powder, a binder and a compound containing an organic material of lower m.p. than that of the binder and extrusion-compacting with extrusion-compacting machine 1. At this time, the temp. of a die at the extruding hole side in an extruding die 5 is regulated to be lower than the m.p. of the binder and higher than the m.p. of the organic material. Successively, to the obtd. compact body, a degreasing treatment (debinder treatment) is applied. This degreasing is executed by dividing into a first process for executing the degreasing in the low temp. range and a second process for executing the degreasing in the higher temp. range than that of the first process. Successively, the obtd. degreased body is burned and sintered in a sintering furnace to produce the sintered body (metallic product).
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