Densification laws and properties of sintered powder compacts in rotary forging process

来源期刊：中国有色金属学报(英文版)2000年第1期

论文作者：王广春 赵国群 贾玉玺 杨艳

文章页码：84 - 87

Key words：sintering powder compact; rotary forging; densification; mechanical properties

Abstract: In order to obtain high property powder metallurgy products, at present rotary forging process has often been used to further densify the sintered powder compact, but the densification law and property analysis have very rarely been studied, therefore the densification laws of sintered powder compacts being composed of Fe-0.8%C-4.0%Cu-0.2% zinc stearate and formed as cylindrical shape by double action pressing, and then further densified as well in a rotary forging process was studied by orthogonal experiment and regression analysis. The experimental results show that theH/Dratio and the rotary forging force are major factors affecting the density of the sintered powder compacts in the rotary forging process. The effect of theH/Dratio and the rotary forging force on the density were discovered. By determining both the density and the hardness of compacts, it was found that the density distributions show no difference from the hardness distributions and that the gradients of the density and the hardness in the axial direction are larger than those in the radial direction.