共查询到18条相似文献,搜索用时 63 毫秒
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工程机械行业是机械工业的重要组成部分,同样也是机械工业领域中最具有发展前景的行业之一。工程机械包括挖掘机械、铲土运输机械、叉车与工程起重机械等,在制造这些机械时,使用的焊接结构部件用材叫做工程机械用钢。文章探讨了工程机械用钢的应用现状与发展前景,仅供参考。 相似文献
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1 前言随着我国现代化建设的深入进行,国内工程机械制造业对高强度、高韧性钢板的需求量越来越大,目前均依靠进口,花费大量外汇。因此,如何结合我国资源情况,开发高强韧性工程机械用钢,成为重要课题。 14MnMo钢是σ_s>490N/mm~2的高强韧性新钢种。研制过程中,试制人员克服了 相似文献
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Yucel Birol 《国际钢铁研究》2009,80(8):588-592
Semisolid processing, already a well established manufacturing route for the production of intricate, thin‐walled aluminium and magnesium parts with mechanical properties as good as forged grades, faces a major challenge in the case of steels. The tool materials must withstand complex load profiles and relatively higher forming temperatures for thousands of forming cycles for industrial application to be attractive. Since the forming pressures are much lower than those encountered in conventional forging, the principle die failure mechanism in steel thixoforging is expected to be thermal fatigue. Hence, suitable materials able to withstand the steel thixoforming environment for an economically acceptable life, can be best identified with a thermal fatigue test. Such a test is described in the present work. A novel CrNiCo and a nickel‐base superalloy, reported to exhibit superior thermal fatigue resistance in demanding tooling applications, was tested under thermal fatigue conditions encountered in the thixoforming of steels. 相似文献
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中国能源工业发展对钢铁材料技术的挑战 总被引:1,自引:0,他引:1
简要介绍了中国能源工业的现状、发展趋势以及能源工业发展对关键钢铁材料技术的挑战性需求。重点介绍了我国超超临界火电机组建设、大型先进压水堆核电站建设、核聚变堆预研工程对关键钢铁材料技术的需求和推动。也介绍了石化工业发展对钢铁材料技术的需求。能源工业是国民经济快速、持续发展的动力所在,钢铁材料技术是支撑能源工业发展的最重要基础。 相似文献
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介绍了沙钢100 t EAF-LF-150 mm×150 mm CC-CR流程生产的免球化退火硼钢、省略球化退火和倜质处理工艺的冷作硬化非调质钢、在线软化冷镦钢和超高强度紧固件用钢等节能冷镦钢新产品的进展。文中对各钢种的组织、力学性能、淬透性、冷镦性能进行了分析,用户对节能冷镦钢的使用效果良好。 相似文献
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大型物流企业工程机械再制造探析 总被引:1,自引:0,他引:1
以工程机械再制造作为设备处置的新途径,阐述了再制造对物流企业成本控制的重要意义,分析了我国工程机械实施再制造的可行性,提出物流企业工程机械实施再制造的模式。 相似文献
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采用低碳Cr-Mo系添加微量强碳化物形成元素的成分设计,通过TMCP工艺控制,获得均匀铁素体/贝氏体组织,充分发挥析出强化、细晶强化和贝氏体组织强化作用,研制80 mm厚高韧性工程机械用Q460钢。试制钢板力学性能均匀,不仅具有良好的拉伸力学性能,且低温冲击韧性优良,-60℃冲击功大于180 J,冲击断口呈明显塑性变形;SEM分析表明,断口微观形貌韧窝特征明显,面积约为55%,韧窝内圆形氧化物夹杂细小;钢板厚度方向铁素体/贝氏体组织均匀,晶粒尺寸约为8~10μm;TEM分析表明,晶内存在高密度位错,大量细小弥散的第二相粒子沿位错线析出。 相似文献
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Yucel Birol 《国际钢铁研究》2009,80(2):165-171
Semisolid processing of aluminium and magnesium alloys has matured to become a well established manufacturing route for the production of intricate, thin‐walled parts with mechanical properties as good as forged grades. However, this innovative forming technology faces a major challenge in the case of steels. The tool materials must withstand the complex load profile and relatively higher forming temperatures which promote chemical interaction with steel slurries. Thixoforming tools ought to last thousands of forming cycles for industrial application to be attractive. Hot work tool steel dies proved to be entirely inadequate when thixoforming steels. In spite of extensive research on tool materials for the semisolid processing of steels, there is yet no material to fulfil this critical role. The present work was undertaken to explore the potential of a novel CrNiCo alloy as the tooling material in semisolid processing of steel. 相似文献
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