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BENEFITS OF DIE WALL LUBRICATION FOR POWDER COMPACTION

机译:模具壁润滑粉的优点

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摘要

The achievement of high density at reasonable cost would be a definite advantage for the production of P/M components requiring high static and dynamic properties. The use of the electrostatic die wall lubrication technique appears as a very attractive route to promote densification. By reducing the level of friction at die walls, this technique should have the potential to also reduce density variations in powder compacts, particularly for parts having a large sliding surface or a long die fill. This paper presents two case studies of parts having high aspect ratio compacted using die wall lubrication either on a laboratory press or on an industrial mechanical press. Special attention is paid to the axial density distribution of the green compacts as a function of the compacting pressure and the type of lubrication (admixed or die wall lubrication).
机译:以合理的成本实现高密度将是生产要求高静态和动态特性的P / M组件的绝对优势。静电模具壁润滑技术的使用看来是促进致密化的非常有吸引力的途径。通过减少模具壁上的摩擦力,该技术应具有减少粉末成形体中密度变化的潜力,尤其是对于具有较大滑动表面或较长模具填充量的零件。本文介绍了两个案例研究,这些案例是在实验室压力机或工业机械压力机上使用模具壁润滑压实的高纵横比零件。应特别注意生坯的轴向密度分布,该密度取决于压实压力和润滑类型(混合或模具壁润滑)。

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