JP2008169460A5

JP2008169460A5 -

Info

Publication number: JP2008169460A5
Application number: JP2007035371A
Authority: JP
Filing date: 2007-02-15
Publication date: 2010-10-28
Anticipated expiration: 2027-02-15

Description

すなわち、本発明の要旨構成は次のとおりである。
（１）鉄基粉末に、添加材として、タルクおよびステアタイトのうちから選んだ少なくとも１種ならびに脂肪酸アミドを添加した鉄基粉末混合物であって、上記タルクおよびステアタイトのうちから選んだ少なくとも１種の添加量を、上記鉄基粉末混合物全体に対して0.01〜0.5 mass％の範囲とすることを特徴とする鉄基粉末混合物。 That is, the gist configuration of the present invention is as follows.
(1) An iron- based powder mixture obtained by adding at least one selected from talc and steatite and a fatty acid amide as an additive to an iron-based powder, wherein at least one selected from the above talc and steatite the addition amount of the seed, the iron-based powder mixture, characterized in that in the range of 0.01 to 0.5 mass% with respect to total the iron-based powder mixture.

これらタルクおよびステアタイトの添加量は、鉄基粉末混合物全体に対し0.01〜0.5 mass％程度とする。というのは、これらの添加材を0.01mass％以上添加することにより、加圧成形時における成形体密度を十分に向上させ、かつ成形体抜出時における抜出力を十分に低減させることができるからである。一方、添加量が0.5mass％を超えると、成形体を焼結して得た焼結材の機械的強度を低下させることが懸念される。 The addition amount of the talc and steatite shall be the order of 0.01 to 0.5 mass% relative to the total iron-based powder mixture. This is because by adding 0.01 mass% or more of these additives, it is possible to sufficiently improve the density of the molded body at the time of pressure molding and sufficiently reduce the output at the time of extracting the molded body. It is. On the other hand, when the added amount exceeds 0.5 mass%, there is a concern that the mechanical strength of the sintered material obtained by sintering the compact is reduced.

Claims

An iron- based powder mixture obtained by adding at least one selected from talc and steatite and a fatty acid amide as an additive to an iron-based powder, and adding at least one selected from the above talc and steatite An iron-based powder mixture characterized in that the amount is in the range of 0.01 to 0.5 mass% with respect to the entire iron-based powder mixture.