Experimental evaluation of wear protection ability of sheet metal die covers in closed-die forging
Experimental evaluation of wear protection ability of sheet metal die covers in closed-die forging
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DOI：
10.1007/s11740-019-00917-z
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发表时间：
2019-08
期刊：
影响因子：
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通讯作者：
Yingyan Yu;D. R. Alba;L. Schaeffer;G. Hirt
中科院分区：
文献类型：
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作者：
Yingyan Yu;D. R. Alba;L. Schaeffer;G. Hirt
磨损是影响闭式模锻锻模寿命的主要原因。一种新提出的减少模具磨损的方法是保护性金属板锻模盖的概念，其中使用廉价且易于更换的金属板锻模盖来保护锻模。这个概念已经从根本上验证了以前的研究，所提出的工作旨在进一步评估这个概念的保护作用，减少磨损。首先，进行了模盖概念在方形法兰锻模上的应用试验。在有模盖和无模盖的锻模上进行100次锻造冲程。然后测量并比较两种锻模的磨损深度。结果表明，有模盖的锻模比无模盖的锻模磨损减少98%以上。因此，带模盖的锻模的预期工具寿命延长了600%。此外，实验中应用的模盖在不变形的情况下实现了100次锻造循环的使用寿命，达到了迄今为止模盖概念的最大使用寿命。
Wear is the main mechanism that reduces the lifetime of forging dies used in closed die forging. A newly proposed approach to decrease die wear is the concept of protective sheet metal forging die covers, where an inexpensive and easy-to-exchange sheet metal die cover is used to protect forging dies. After this concept has been fundamentally validated by previous studies, the presented work aims to further evaluate the protective effects of this concept regarding wear reduction. First, an application-oriented experiment of the die cover concept on forging dies for producing square flange was conducted. On both the forging dies with and without die covers 100 forging strokes were carried out. The wear depths of both forging dies were then measured and compared. The results indicated that the forging die with die covers has up to 98% less wear than the forging die without die covers. The expected tool life of the forging die with die covers is therefore 600% longer. In addition, the die cover applied in the experiment achieved the service life of 100 forging cycles without being distorted, which reached the maximum service life of the die cover concept so far.