ZTAp-Fe复合材料复合铸造模拟及试验研究  

Simulation and Experimental Analysis of ZTAp-Fe Composite Casting

作　　者：范磊[1,2,3,4] 任清海 石子杰 范兴帅 胡纯 王梓晗 Fan Lei;Ren Qinghai;Shi Zijie;Fan Xingshuai;Hu Chun;Wang Zihan(School of Mechatronics and Information Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;China University of Mining and Technology(Beijing)Top Coal Mining Coal Industry Engineering Research Center,Bejing 100083,China;Zhengzhou Coal Mining Machinery Group Co.,Ltd.,Zhengzhou 450016,China;State Key Laboratory of Tribology,Tsinghua University,Bejing 100084,China)

机构地区：[1]中国矿业大学(北京)机电与信息工程学院,北京100083 [2]中国矿业大学(北京)放顶煤开采煤炭行业工程研究中心,北京100083 [3]郑州煤矿机械集团股份有限公司,河南郑州450016 [4]清华大学摩擦学国家重点实验室,北京100084

出　　处：《稀有金属》2022年第8期1041-1047,共7页Chinese Journal of Rare Metals

基　　金：清华大学摩擦学国家重点实验室开放基金资助项目(SKLTKF20B11);中央高校基本科研业务费项目(2021YQJD21);大学生创新训练项目(202104023)资助。

摘　　要：煤矿综采设备的关键部件在设备工作过程中受磨损严重,导致设备失效带来较大的经济损失。新型耐磨复合材料拥有极好的耐磨性与强度,将其用于设备关键部件可以有效提高煤炭综采装备部件的使用寿命,从而降低煤炭开采过程中的成本,因此对新型耐磨复合材料的关键应用技术的研究具有重要实用价值。本文通过真空烧结技术制备了氧化锆增韧氧化铝颗粒增强铁基(ZTAp-Fe)复合材料,并对ZTApFe复合材料进行复合铸造,利用有限元数值模拟及试验的方法对界面进行了研究。结果表明:真空烧结过程中ZTAp没有与其他原材料发生化学反应生成新的物相。烧结后ZTAp受压应力,铁基体受拉应力,形成热膨胀位错强化。有限元数值模拟计算ZTAp-Fe复合材料表面温度的变化和内部温度场的分布情况表明ZTAp-Fe复合材料基体与覆层可以发生熔合。浇注温度为1650℃时进行复合铸造,ZTAp-Fe复合材料与覆层结合处界面结合良好,界面过渡层厚度约为10μm。ZTAp-Fe复合材料与覆层的界面处元素相互扩散,形成冶金结合。The key components of the fully mechanized mining equipment are severely worn during the operation of the equipment,resulting in equipment failure and large economic losses.The new wear-resistant composite material has excellent wear resistance and strength.The use of it in the key components of the equipment can effectively increase the service life of the coal mining equipment components,thereby reducing the cost in the coal mining process.Therefore,the research on the key application technology of new wear-resistant composite material had important practical value.Composite casting technology was a common combination technology of composite materials and mechanical parts.The key of the composite casting method to prepare parts is whether the clad metal and the composite material can be combined stably.The key to the stable combination of the two was whether the interface between the two was stable.Therefore,the study of the interface between the two has important theoretical significance.In this paper,vacuum sintering method was used to prepare zirconia toughened alumina iron matrix(ZTAp-Fe)composite.The metal matrix material was iron-based self-fluxing alloy powder with an average particle size of 50μm,ZTA particles with an average particle size of 2 mm were selected as the reinforcing phase.And the QM-3SP4 planetary ball mill was used for mixing,PP-100S full-automatic tablet press was used to press the mixed powder into a green body,and the green body was placed in ZT-40-20 vacuum carbon tube sintering furnace for vacuum sintering,then,the Japanese Rigaku company type D/mas-250p X-ray diffractometer(XRD)was used to analyze the phase composition of ZTAp-Fe composite.In the composite casting experiment,the pouring temperature was 1650℃,ZTAp-Fe composite size was 100mm×67 mm×40 mm,the casting size was 100 mm×67 mm×40 mm,and the sand mold material was industrial water,the size of glass sand and sand mould was 300 mm×210 mm×160 mm.ProCAST software was used to perform composite casting numerical simulatio

关 键 词：复合材料 复合铸造 模拟 界面 

分 类 号：TB333[一般工业技术—材料科学与工程]