A study of the quality of preforms from iron-base powders produced by forming combined with sintering by electric current pulses

被引:0
|
作者
Dmitriev, A. M. [1 ]
Grigoriev, S. N. [1 ]
Korobova, N. V. [1 ]
Stupnikov, V. P. [2 ]
机构
[1] STANKIN Moscow State Technol Univ, Moscow, Russia
[2] NE Bauman Moscow State Tech Univ, Moscow, Russia
关键词
iron powders; joint forming and sintering; forming by the force of a press; electric pulse sintering; hardness and strength of produced specimens;
D O I
10.1007/s11041-012-9449-8
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Amethod and design of an installation for treating iron powders and making preforms for machine parts from them are described. In order to sinter a preform simultaneously with compressing the powder in a closed die pulses of eclectic current are passed through the powder. In accordance with the design of the multifactor experiment, the method is used to fabricate control specimens. Formulas are obtained for computing the relative strain due to upsetting until failure and the specific force of upsetting before failure using the results of measurement of the hardness of articles.
引用
收藏
页码:17 / 21
页数:5
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