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综述了铸件成形中充型过程、凝固过程、应力场、凝固组织形成过程的计算机模拟技术,模拟软件及应用现状。指出计算机模拟技术是铸件成形工艺的重要手段,大型化、轻量化、精确化、数字化、网络化及清洁化将是未来铸造技术的重要发展方向。 相似文献
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面向21世纪的铸造技术 总被引:5,自引:1,他引:4
铸造、锻造、焊接等材料加工技术在国民经济中起着重要作用。“无废物加工”可减少废料、污染和能源消耗 ,是将来的主要制造技术 ,精确成形铸造技术将是其中的理想选择。高性能、高保真、高效率是基于知识的铸造工艺模拟仿真的努力目标。并行工程正成为产品及相关制造过程集成设计的系统方法 ,而网络化、智能化是 2 1世纪铸造新产品与工艺过程设计的趋势 相似文献
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增材制造是近几十年发展起来的一种先进金属件近净成形技术,具有低能耗、短周期、高柔性、低成本等显著优势,已成为先进装备领域的前沿制造技术之一. 与传统铸造相比,增材铝合金具有相当甚至更优的力学性能. 然而,相关质量评估标准缺乏和疲劳性能分散性较大等问题限制了其在重大工程装备中的应用. 重点以选区激光熔化成形的AlSi10Mg合金为对象,从“制造工艺—仿真模拟—性能评价”角度,系统分析了增材制造工艺参数、建造方向和热处理制度等几个重要因素对铝合金微观结构及力学性能的影响,总结了增材热力学过程模拟与力学性能的相关仿真研究现状,重点探讨了目前增材制造铝合金力学性能评价的国内外进展,并进一步归纳了基于组分调控提升铝合金力学性能的相关研究结果,最后对其发展趋势进行了展望. 相似文献
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探讨了铸造业“两化融合”之路,提出了以铸造工艺计算机辅助设计、铸造计算机仿真分析、模具制作/加工计算机辅助制造、企业资源计划管理、产品数据管理等为主的实施内容.根据铸造企业现状,指出了未来铸造企业“两化融合”的发展方向:物联网技术、铸造装备智能化、铸造过程可视化、精益铸造及绿色铸造. 相似文献
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我国铸造机械行业发展现状分析 铸造行业是制造业的重要组成部分,对国民经济的发展及国防力量的增强起着重要的作用.铸造是汽车、石化、钢铁、电力、造船、纺织、装备制造等支柱产业的基础,而先进的铸造技术则是先进制造技术的重要内容. 相似文献
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The application of additive manufacturing technology is one of the main approaches to achieving the rapid casting. Additive manufacturing technology can directly prepare casting molds (cores) with no need of patterns, and quickly cast complex castings. The combination of additive manufacturing and traditional casting technology can break the constraint of traditional casting technology, improve casting flexibility, and ameliorate the working environment. Besides, additive manufacturing promotes the realization of "free casting", greatly simplifying the processing procedures and shortening the manufacturing cycle. This paper summarizes the basic principle of additive manufacturing technology and its development situation domestically and overseas, mainly focusing on the development status of several main additive manufacturing technologies applicable to the foundry field, including three-dimensional printing, selective laser sintering, stereolithography, layered extrusion forming, etc. Finally, the future development trend of additive manufacturing technology in the foundry field is prospected. 相似文献
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Yu-sheng Shi Jin-liang Zhang Shi-feng Wen Bo Song Chun-ze Yan Qing-song Wei Jia-min Wu Ya-jun Yin Jian-xin Zhou Rui Chen Wei Zhou He-ping Jia Huan-qing Yang Hai Nan 《中国铸造》2021,18(4):286-295
Additive manufacturing is expected to transform and upgrade the traditional foundry industry to realize the integrated manufacturing and rapid and low-cost development of high-performance components with complex shapes. The additive manufacturing technology commonly applied in casting mold preparation (fusible molds, sand molds/cores and ceramic cores) mainly includes selective laser sintering (SLS) and binder injection three-dimensional printing (3DP). In this work, the research status of SLS/3DP-casting processes on material preparation, equipment development, process optimization, simulation and application cases in aerospace, automotive and other fields were elaborated. Finally, the developing trends of the additive manufacturing technology in the future of foundry field are introduced, including multi-material sand molds (metal core included), ceramic core-shell integration and die-casting dies with conformal cooling runners. 相似文献
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介绍了3D打印技术的现状与发展,重点介绍了3D打印技术在未来铸造生产中的发展和应用。3D打印技术是新的工业革命的标志性技术之一,3D打印砂芯技术用于铸造,可实现无模铸造,有效提高复杂铸件的生产效益和效率,将给铸造业带来一场新的技术革命。 相似文献
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随着铸造行业的转型发展,3D打印技术已经成熟的应用于制造铸造砂型,所制作的砂型不再单单作为铸造过程中的半成品,而是可以作为产品面向各铸造厂进行销售。但是目前对于砂型的检验标准存在缺失,对于砂型质量的把控和评定缺少依据。针对铸造砂型的尺寸精度,通过设计制作测量试块,给出了一种3D喷墨打印砂型的测量方法及评定标准,填补了目前铸造行业中这一领域在标准上的空白,对推动3D打印技术在铸造行业的应用以及砂型的产品化有着重要的意义。 相似文献
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介绍我国自硬砂铸造工艺及装备发展概况。国内自硬砂铸造行业在致力创建敏捷制造体系的同时,更加注重建立精益生产,虚拟制造,计算机集成技术,绿色工程,清洁生产,节能减排等思路,引领大型高端铸件自硬砂铸造走向绿色、环保、智能化的发展趋势。 相似文献
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Based on the practical experience of establishing three art casting laboratories in three different colleges of Guangdong,this paper focuses on the development of contemporary art casting’s education.By analyzing the reason for the shortage of professionals nowadays and the characteristics of modern foundry industry in the Pearl River Delta,the authors try to find out what kind of knowledge structures a modern foundry industry professional should have.Then,from the viewpoint of education,the authors introduce how to combine the art casting laboratory and the creative art casting course as a new teaching pattern,on the one hand,to attract more students to study casting technology,on the other hand,to train them to be qualified professionals for the modern foundry industry. 相似文献
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近年来,国家对制造业的数字化、网络化、智能化越来越重视,特别是《中国制造2025》的发布,更是促进整个制造业向智能制造迈进,铸造行业也应该紧跟步伐.在传统压力铸造行业中压铸机的加料、取件,切边机的上件、下件,加工机床的上件、下件,都是依靠人来完成,大大制约了行业的发展.本文阐述了压力铸造的全自动化生产,为压力铸造行业的... 相似文献