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《Powder Metallurgy Technology》 2003-06
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High pressure rubber mold in the compaction of ultrafine powder

Tan Yuxin Zhang Liying Wu Chengyi (School of Meterials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China)  
In this paper rubber mold pressing are used in the densification of WC Ni Fe and W Cu powders. The influence of processing parameters of rubber mold pressing on compact density and intensity are especially investigated. Also two different pressing methods (steel mold pressing and rubber mold pressing) are studied in the experiment. The results show that rubber mold pressing is an effective method in the compaction of ultrafine powders. Compared with steel mold pressing, rubber mold pressing can increase the green density of W Cu and WC Ni Fe compacts from 33% to 60%. The green compact is strong enough to be machined.
【Fund】: 国家自然科学基金 (编号 5 0 0 0 4 0 0 1、5 0 0 74 0 0 7);; 国家“86 3”计划 (编号 2 0 0 2AA331 0 90 )资助项目
【CateGory Index】: TB44
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