Journal of the Japan Society of Powder and Powder Metallurgy
Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799
Compacting Charactristics on Two-step Pressing of Al Powder
Junichi Asami
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JOURNAL OPEN ACCESS

1994 Volume 41 Issue 2 Pages 131-135

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Abstract
The possibilities of the production of aluminum sintered products by two-step pressing method have been studied. Different from the conventional repressing-resintering approach, two types of dies were employed in the uniaxial compression of powder or green compacts at room temperature. All green compacts were pressed by diewall lubrication in a floating-die tool arrangement. It was noticeable that this method reduced the loads required for ejection of specimens from the die. Consequently, highly stable oxide on the surface of aluminum powder particles could be broken because the compacting pressure was increased, and the bond between particles would be facilitated during sintering.
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