高性能粉末冶金材料发展及其解决方案  

High performance metal powder development and solutions

作　　者：谭兆强[1,2] Ulf Engström 苏鹏飞 李昆 刘咏[1] TAN Zhao-qiang;Ulf Engström;SU Peng-fei;LI Kun;LIU Yong(State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China;Höganäs China Co.,Ltd.,Shanghai 201799,China)

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083 [2]赫格纳斯中国有限公司,上海201799

出　　处：《粉末冶金工业》2020年第3期1-8,共8页Powder Metallurgy Industry

摘　　要：与其它制造技术相比,粉末冶金技术可以更经济和高效地生产结构部件,并能达到高的尺寸精度和性能需求,这一优势一直驱动着粉末冶金技术的发展。粉末冶金技术为了能够适应汽车工业不断发展的应用需求,迫切需要开发具有更高尺寸精度、更高性能以及经济高效的粉末冶金材料解决方案,粉末冶金技术可以通过不同的工艺路径来实现这一目标。例如开发经济的新型合金体系,实现更高密度的新型压制技术,结合高温烧结和快速冷却的烧结工艺,以及碳势控制和二次热处理等工艺,都是可行的解决方案,单独或组合采用这些工艺都可以提高材料性能。随着人们对可持续发展越来越重视,选择对环境影响最小的材料和制造工艺变得尤为重要。本文探讨了满足性能要求的金属粉末方案和工艺条件等关键因素,并列举了具有成本效益和可持续性的汽车应用案例,如同步轮毂,凸轮轴桃片,链轮,齿轮等高要求的应用。The driving force for using PM compared to other manufacturing techniques is almost always due to its ability to produce structural components with close dimensional tolerances and the required performance in a costeffective way. To further grow the PM market into new high challenging automotive applications,cost-effective PM material solutions combining higher precision with increased performance will be required. This can be achieved by different means. The development of new cost-effective alloy systems,new compaction techniques enabling higher densities,sintering at higher temperatures in combination with increased cooling rates,carbon control and adoption of secondary heat treatments,are all examples of ways that either on their own or in combination can be used to increase material performance. The growing awareness of sustainability also makes it important to select both material and manufacturing processes with the least impact on the environment. In this paper some key aspects of the selection of suitable metal powder solutions and the processing conditions needed to meet performance requirements are discussed. These include cost-effectiveness and sustainability for automotive applications like synchronizing hubs,cam lobes,sprockets,gears and other demanding applications that will be presented in this paper.

关 键 词：高性能 高精度 生产效率 可持续性 

分 类 号：TF123[冶金工程—粉末冶金]