PVD-coating of electroplated cBN grinding tools to optimize the wear and application behavior when grinding nickel-based alloys
电镀立方氮化硼磨具的 PVD 涂层可优化磨削镍基合金时的磨损和应用行为
基本信息
- 批准号:400814654
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2018
- 资助国家:德国
- 起止时间:2017-12-31 至 2021-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This project aims to decrease the grinding wheel wear and to increase the material removal rate when grinding nickel-based alloys by applying coatings. Due to their excellent high-temperature strength, high fatigue strength, and exceptional corrosion resistance, nickel-based alloys are used in high-tech areas such as in turbines and engines. The required surfaces with low roughness can often only be manufactured by grinding. Grinding nickel-based alloys is difficult because of their thermal, mechanical and chemical properties. The reduction of the grinding wheel wear as well as the generation of a high quality surface and near surface integrity are the challenges. The friction between grinding wheel and workpiece during the process leads to mechanical wear and the heat from friction accelerates the chemical and thermal wear. The application of coatings on grinding wheels is a promising method to meet the mentioned challenges. By using coatings, the friction will be reduced and the grain retention force will be increased, whereby a bigger chip space is possible via reduction of the galvanic bond thickness. There is still a lack in understanding the interdependencies between the coating process parameters and the process results. At the end of the project, a reduction of tool wear and friction as well as an increase of the chip space and the involved optimization of the martial removal rate when grinding nickel based alloys with PVD-coatings will be achieved. A PVD-coating will be developed that increases the grain holding forces and improves the tribological and non-adhesive properties of the grinding wheel. The chip space will be maximized by a reduced bond level of the cBN grains because of the improved galvanic bond properties of the applied PVD-coating. The grain retention forces applying different PVD-coatings and bond levels will be examined. The advantage of the PVD-coating will be validated in an experimental comparison of coated cBN-grinding wheels with adjusted chip space against non-coated cBN-grinding wheels with standard chip space at high efficiency deep feed grinding of nickel based alloys. The project result will be a coated grinding wheel with adjusted chip space and larger space for cooling lubricant and chips in process. As a consequence, the material removal rate and the total material removal when high efficiency deep feed grinding nickel-based alloys will be increased without thermal damage of the near surface layer. The grinding wheels’ performance and the efficiency of the process will be increased.
本项目旨在通过涂覆涂层,减少镍基合金磨削时砂轮的磨损,提高材料去除率。由于其优异的高温强度、高疲劳强度和优异的耐腐蚀性,镍基合金被用于高科技领域,如涡轮机和发动机。所要求的低粗糙度表面通常只能通过磨削来制造。由于镍基合金的热、机械和化学性能,磨削是困难的。减少砂轮磨损以及产生高质量的表面和近表面完整性是面临的挑战。在加工过程中,砂轮与工件之间的摩擦导致机械磨损,摩擦产生的热量加速了化学磨损和热磨损。在砂轮上应用涂层是应对上述挑战的一种很有前途的方法。通过使用涂层,可以减少摩擦,增加晶粒保留力,从而通过减少电键厚度来获得更大的切屑空间。在了解涂层工艺参数和工艺结果之间的相互依赖关系方面仍然缺乏。在项目结束时,将实现减少刀具磨损和摩擦,增加切屑空间,并优化使用pvd涂层磨削镍基合金时的军事去除率。一种pvd涂层将被开发,以增加晶粒保持力,改善砂轮的摩擦学和非粘着性能。由于所应用的pvd涂层的电结合性能得到改善,cBN晶粒的键合水平降低,从而使芯片空间最大化。应用不同的pvd涂层和结合水平的谷物保持力将被检查。在镍基合金的高效深进给磨削中,通过调整切削位的涂层cbn砂轮与标准切削位的非涂层cbn砂轮的实验比较,验证了pvd涂层的优势。项目结果将是一个涂层砂轮,调整了切屑空间,并有更大的空间用于冷却润滑油和加工中的切屑。因此,在不造成近表层热损伤的情况下,高效深进给磨削镍基合金的材料去除率和总去除率均有提高。提高了砂轮的性能和加工效率。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Professor Dr.-Ing. Jan C. Aurich其他文献
Professor Dr.-Ing. Jan C. Aurich的其他文献
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{{ truncateString('Professor Dr.-Ing. Jan C. Aurich', 18)}}的其他基金
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