Abstract A high-temperature tribometer based on hot strip drawing was developed and the coefficients of friction between 6061 aluminum alloy sheets and tools at 300°C-500 °C under dry conditions were measured. The microfriction morphology was observed by both a 3D optical microscope and scanning electron microscope to analyze the friction mechanism. The results showed that the average COF under dry conditions increased with temperature and changed the primary friction mechanism from abrasive to adhesive friction. Furthermore, the COFs under the lubrication of graphite, MoS2, and BN at 300°C-500 °C were also tested. According to the results, graphite exhibited excellent lubrication ability with a low COF value of 0.09–0.17. Additionally, the lubrication ability remained unaffected by the hot strip temperature.

中文翻译：

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基于热拉拔试验的6061铝合金板干润滑条件下热冲压摩擦行为

摘要 研制了一种基于带钢热拉拔的高温摩擦计，测量了6061铝合金板与工具在300°C-500°C干燥条件下的摩擦系数。通过3D光学显微镜和扫描电子显微镜观察微摩擦形貌以分析摩擦机理。结果表明，干燥条件下的平均 COF 随温度升高而增加，并将主要摩擦机制从磨料摩擦变为粘附摩擦。此外，还测试了在 300°C-500°C 下石墨、MoS2 和 BN 润滑下的 COF。根据结果​​，石墨表现出优异的润滑能力，COF 值低，为 0.09-0.17。此外，润滑能力不受热轧带钢温度的影响。