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Aluminum Matrix Composite (AlSi7Mg2Sr0.03/SiCp) Pistons Obtained by Mechanical Mixing Method

机译：机械混合法制得的铝基复合材料（AlSi7Mg2Sr0.03 / SiCp）活塞

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Metal matrix composites are undoubtedly a group of advanced engineering materials. Compared to unreinforced matrix material, they are characterized by increased strength, greater stiffness, increased wear resistance, better mechanical properties and dimensional stability at elevated temperatures as well as lower density. Due to its very favorable tribological properties for many years research has been conducted on the application of MMC in friction node. The article presents important technological aspects related to the production and properties of composite pistons. Under industrial conditions, a composite suspension (AlSi7Mg2Sr0.03/SiCp 10 vol %) was prepared to allow casting of the semi-finished pistons series. Machining parameters of the working surfaces of the piston were selected on the basis of the turning test made on PCD, PCNM and uncoated carbide tools. The tribological properties of the composite pistons were determined on the basis of the pin-on-disc and the abrasion wear. The scuffing tests carried out under real operating conditions have confirmed the possibility of using composite pistons in air compressors.
机译：金属基复合材料无疑是一组先进的工程材料。与未增强的基质材料相比，它们的特点是强度更高，刚度更高，耐磨性更高，在高温下具有更好的机械性能和尺寸稳定性以及更低的密度。由于其非常良好的摩擦学性能，多年来对MMC在摩擦节点中的应用进行了研究。本文介绍了与复合活塞的生产和性能有关的重要技术方面。在工业条件下，准备了复合悬架（AlSi7Mg2Sr0.03 / SiCp 10体积％）以铸造半成品活塞系列。根据在PCD，PCNM和无涂层硬质合金刀具上进行的车削测试，选择活塞工作表面的加工参数。复合活塞的摩擦学性能是基于销盘和磨耗确定的。在实际运行条件下进行的划痕测试已经证实了在空气压缩机中使用复合活塞的可能性。

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