Abstract Wear of form taps in machining of Al-12Si die-cast alloys has been a critical problem for automotive engine manufacturing. Poor quality of formed threads results in high rework cost, and scrap. This research is focused on investigating the wear mechanisms and quantify wear by developing new measurement metrics. In addition, a performance criterion has been proposed to limit machining and evaluate wear on form taps. Abrasion and Adhesion wear mechanisms have caused severe deterioration of lobes on the chamfered length of tap tools during form tapping. A detailed evaluation of the complexity of wear propagation has been presented for critical regions of a lobe in a form tap.

中文翻译：

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铝硅合金零件螺纹加工中成形丝锥的磨损：机理和测量

摘要 Al-12Si 压铸合金加工中成形丝锥的磨损一直是汽车发动机制造中的一个关键问题。成型螺纹质量差会导致高返工成本和废品。这项研究的重点是通过开发新的测量指标来研究磨损机制和量化磨损。此外，还提出了一个性能标准来限制加工和评估成形丝锥的磨损。在攻丝过程中，磨损和粘附磨损机制已导致攻丝工具倒角长度上的凸角严重恶化。对成形丝锥中凸角的关键区域的磨损传播复杂性进行了详细评估。