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Experimental evaluation of palm oil as lubricant in cold forward extrusion process

机译:棕榈油作为冷前挤压工艺润滑剂的实验评价

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摘要

Today, vegetable oil is much desired for its application as a lubricant in metal forming processes, because it is a renewable resource and has high biodegradability compared to mineral oil. According to the Organization for Economic Cooperation and Development for the European Union 301C (OECD) testing method, the biodegradability levels of vegetable oils are better compared to petroleum-based lubricants. Palm oil is used more often than other vegetable oils. Therefore, palm oil has the potential to fulfill the demand for vegetable-based lubricants. The purpose of this paper is to evaluate the viability of palm oil when used as a lubricant in cold work such as the forward plane strain extrusion process. The performances of palm oil were compared with additive-free paraffinic mineral oil. Experimental work with a plane strain extrusion apparatus with a symmetrical workpiece was carried out at room temperature. The material of the workpiece is annealed pure aluminum A1100. The visioplasticity method was used to calculate the velocities and effective strain in the deformation zone of the workpiece. The results obtained from the experimental work showed that palm oil has satisfactory lubrication performances, as compared to paraffinic mineral oil, and has advantages in reducing the extrusion load.
机译:如今,由于植物油是可再生资源并且与矿物油相比具有高生物降解性,因此非常需要将其用作金属成型工艺中的润滑剂。根据欧洲经济合作与发展组织(EUCD)301C(OECD)的测试方法,与石油基润滑剂相比,植物油的生物降解性更好。棕榈油比其他植物油更常用。因此,棕榈油有潜力满足对植物基润滑剂的需求。本文的目的是评估棕榈油在冷加工(例如前向平面应变挤压工艺)中用作润滑剂时的生存能力。将棕榈油的性能与不含添加剂的石蜡矿物油进行了比较。在室温下使用具有对称工件的平面应变挤压设备进行实验工作。工件的材料是退火的纯铝A1100。粘塑性法用于计算工件变形区域的速度和有效应变。从实验工作获得的结果表明,与链烷烃矿物油相比,棕榈油具有令人满意的润滑性能,并且在降低挤出负荷方面具有优势。

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