Material adapted tool design in cold forging exemplified by powder metallurgical tool steels and industrial ceramics
Material adapted tool design in cold forging exemplified by powder metallurgical tool steels and industrial ceramics
复制标题
以粉末冶金工具钢和工业陶瓷为例的冷锻材料适应性工具设计
DOI：
10.1007/s11740-008-0112-6
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
U. Engel
中科院分区：
文献类型：
--
作者：
M. Geiger;M. Arbak;U. Engel
当今冷锻技术的优势，如工件的优异机械性能和最小的材料浪费，以及通过近净成形实现的节能，增加了其与其他生产方法的竞争力。然而，与温锻和热锻相比，由于工具的负载极高，工具寿命明显更有限，导致生产成本增加。由于冷锻模具的不同部分分别或同时出现疲劳和磨损的破坏机制，因此，冷锻模具的工艺特定工具材料选择和设计在各种零件的近终形锻造中起着决定性作用。本文介绍了两个应用粉末冶金工具钢和陶瓷作为刀具材料的案例研究。在有限元模拟的帮助下，这些材料的成功适应提高了刀具寿命和工件质量。
The advantages of today’s cold forging technology, such as excellent mechanical properties of the workpiece and minimum waste of material together with energy saving via near net shaping increase its competitiveness against other production methods. However, as a result of extremely high loading of the tools when compared with warm and hot forging, tool life is distinctly more confined resulting in increased production costs. Due to separately or concurrently emerging damaging mechanisms of fatigue and wear at different sections of a cold forging die, process specific tool material selection and design of cold forging dies play a decisive role in near-net-shape forging of various parts. Two case studies utilizing powder metallurgical tool steel and ceramic as tool materials are presented in this paper. Successful adaptation of these materials with the help of FE simulations led to increased tool life and workpiece quality.