ORBITAL FORGING OF SINTERED POROUS BILLETS

被引：0
作者：
Baglyuk, G. A. [1 ]
Kurikhin, V. G. [1 ]
Gozhii, S. P. [1 ]
机构：
[1] Natl Acad Sci Ukraine, Frantsevich Inst Problems Mat Sci, Kiev, Ukraine
来源：
POWDER METALLURGY AND METAL CERAMICS | 2015年 / 53卷 / 9-10期
关键词：
orbital forging; porous billets; porosity; densification; local strain; plastic zone;
D O I：
10.1007/s11106-015-9646-2
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Features of the deformation of sintered porous billets during orbital forging are considered. A schematic of an orbital forge with a roller as a punch is shown. To study orbital forging processes, cylindrical samples made of iron powder and its mixture with 1% of graphite compacted under 550, 700, and 850 MPa and sintered at 1150 degrees C were used. The variation of the relative density and radial strain of billets during orbital forging with the axial strain and the variation of the strain with the shape factor of porous billets are described. It is shown that the total force of orbital forging is much lower (by a factor of 3.0-4.5) than the load needed to form similar billets by conventional free upsetting.
引用
收藏
页码：522 / 528
页数：7
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