共查询到18条相似文献,搜索用时 484 毫秒
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保来得有限公司开发的一种动力滑动门用离合器零件获得了一个新型设计奖。制造这种零件利用了粉末冶金技术制造精度高、制品形状复杂及材料选择多样性等特点,采用这种粉末冶金零件有利于整套产品减小尺寸和降低重量,保来得有限公司因开发这种零件扩大了粉末冶金技术的应用而受到表彰。优秀烧结产品有限公司制作的一种内径呈锥形的粉末冶金零件制品获得了一个新型设计奖。优秀烧结产品有限公司由于使用粉末冶金技术制作这种形状复杂的零件,扩大了粉末冶金技术的应用而受到了奖励,这种粉末冶金零件可以被应用于一种重要的与安全有关的零件中。… 相似文献
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介绍了:我国摩托车用粉末冶金零件的现状;台湾地区和日本生产的摩托车用粉末冶金零件的品种、材质和技术条件;使用粉末冶金方法制造摩托车用零件的技术-经济效果。 相似文献
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文章对公司研制车用电子真空泵不锈钢粉末冶金零件的一些关键技术进行了介绍。通过对不锈钢粉末的原料配方与原料预处理技术的研究,对不锈钢粉末冶金零件的压制成型方法与压制成型模具设计的研究,对不锈钢粉末冶金零件的烧结工艺的研究,研制出了符合尺寸与性能要求的车用电子真空泵不锈钢粉末冶金零件。 相似文献
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汽车零件是粉末冶金铁基零件的主要市场.近五年来,粉末冶金不锈钢汽车零件的开发、研究与生产非常活跃.在北美与日本等国家,以ABS传感器齿圈、不锈钢排气管法兰为代表的粉末冶金4XX系列不锈钢零件,已成功打入汽车零件市场.这源于粉末不锈钢合金的进步,源于粉末制造技术、烧结技术的进步.实现粉末冶金4XX系列不锈钢零件的大批量工业化生产,是当前新的挑战,也是推动粉末冶金技术及产品发展的极好机遇.本文将从粉末冶金不锈钢的类型特点,汽车用粉末不锈钢零件的发展水平、技术难点、研究开发方向等方面综述国内外的典型经验,并结合我国国情探讨加快研究、开发和生产粉末冶金不锈钢零件的途径. 相似文献
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Ayorinde Tayo Olanipekun Nthabiseng Beauty Maledi Peter Madindwa Mashinini 《粉末冶金学》2020,63(4):254-267
ABSTRACT Powder metallurgy (PM) technology is an ideal manufacturing process to produce near net shape parts i.e. part that requires little or no machining, examples of PM processes are spark plasma sintering, isostatic pressing and additive manufacturing. PM allows maximisation of materials and produces part with optimised mechanical and physical properties. Also, PM process provides the possibility to further increase the industrial use of PM parts by fabricating it into complex geometrical shapes via joining. Joining is the most important mechanical process necessary for PM parts to perform in actual service conditions expected in automobile parts and structural parts. Despite apparent advantages of PM processes, joining PM parts has been a tedious process, due to challenges associated with inherent characteristics, like porosity, chemical composition and impurities like oil or grease, which tend to impair the weldments property. In this document, a review of PM process is presented, focusing on different welding methods that can be used to effectively join PM components. 相似文献
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从生产发展角度回顾了70年代以来,寻求优质铁粉的过程。概括地总结了本厂多年来应用水雾化铁粉的经验,及其在生产ρ ≥ 6.8g/cm3纺织机械粉末冶金零件中成功的应用情况。实践证明,水雾化铁粉的应用是改进工艺、不断提高零件性能的有效途径。 相似文献
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中国(大陆)粉末冶金零件行业2004年进展 总被引:1,自引:0,他引:1
本文介绍了中国(大陆)粉末冶金零件行业2004年的生产概况与市场动向。阐述了粉末冶金汽车零件的市场动态。分析了中国(大陆)粉末冶金零件行业面临的挑战。介绍了美国APMI International的PMT认证。 相似文献
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《粉末冶金学》2013,56(2):125-140
AbstractNi, Cu and in some cases Mo are the alloying elements which have traditionally been used in sintered steels. High performance of powder metallurgy (PM) structural parts from Fe powders is reached mainly by alloying of Ni. The use of Mn in Fe base PM structural parts has been avoided because of its high affinity to oxygen. It is difficult to sinter Mn steel, without oxidation, in industrial atmospheres. However, the PM industry follows also possibilities in order to develop Ni free sintered steels which render as high mechanical properties as diffusion alloyed Ni containing sintered steels and further fulfil the requirements of health protection. In recent years Mn have been introduced as alloying element in Fe based structural parts, on laboratory scale and also for pilot scale production. In this paper the factors that contribute to the structure and mechanical properties of sintered Mn steels are summarised. 相似文献
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从PM2004看世界粉末冶金的发展现状 总被引:6,自引:0,他引:6
详细介绍了2004年粉末冶金世界大会的基本情况, 概述了国际粉末冶金工业现状, 并按照类别阐述了粉末冶金各技术领域以及材料产品, 如粉末烧结钢、粉末注射成形、粉末制备技术、粉末压制技术、粉末烧结理论与技术、粉末多孔材料、硬质合金、粉末轻金属、粉末零件后续处理加工技术、粉末冶金过程模拟与标准化以及粉末功能材料等的发展趋势。世界粉末冶金的发展现状和趋势表明粉末冶金技术是工业化集成技术, 而不仅仅是一种高技术。 相似文献
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AbstractPowder metallurgy (PM) processes have high productivity and are ideal for making near net-shape parts of complex geometries from a range of materials, which maximises material utilisation, and minimises or eliminates secondary operations such as machining. The secondary operations that are common for components made via liquid metal processing may result in additional manufacturing steps with substantial cost and waste implications. Despite this obvious advantage of PM components, including powder metal injection moulded (MIM) parts, the joining of sintered powder materials has been associated with difficulties related to their inherent characteristics, such as porosity, contamination and inclusions, at levels which tend to influence the properties of a welded joint. A critical review of the current state of the art of welding PM components is presented. The intention is to identify preferred joining processes and identify technology gaps in joining of PM parts, in terms of initial processing and attendant materials issues, with an emphasis on offering solutions to welding problems. Brazing, diffusion bonding and shrink fitting are briefly considered in addition to welding. 相似文献