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Influence of Processing Conditions on Microstructure and Mechanical Properties of Large Thin-Wall Centrifugal Ti–6Al–4V CastingXin Feng1,Jianke Qiu1,Yingjie Ma1,Jiafeng Lei1,Yuyou Cui1,Xinhua Wu2,Rui Yang11. Institute of Metal Research, Chinese Academy of Sciences2. Department of Materials Engineering, Monash University摘 要:In this work,the effects......
; 文章编号:1672-7207(2016)12-4090-09 Effect of tongue on pressure fluctuation and internal flow in centrifugal pump MOU Jiegang, LIU Jian, ZHENG Shuihua, GU Yunqing, DAI Dongshun, MA Yi (College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China) Abstract: In order to clarify the tongue influence on the internal flow field of centrifugal......
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离心铸造WC/钢组织结构的研究 易少霞1,尤显卿1,张焱2,丁峰2,刘宝1 (1.合肥工业大学,材料科学与工程学院,安徽,合肥,230009;2.安徽职业技术学院,机械工程系,安徽,合肥,230011) 摘要:选用GCr15轴承钢为基体,WC颗粒为增强相,采用离心铸造工艺制备WC/钢复合材料-LGJW20.用金相分析,电镜扫描(SEM),X射线衍射(XRD)及能谱分析(EDS)等方法研究材料铸态的相变过程及显微组织.研究结果表明:LGJW20显微组织中基体主要为细小的珠光体组织,基体中析出大量M_(23)C_6及MC型等细小碳化物颗粒;WC原始颗粒以各种复式碳化物的形式析出,分别形成枝状或鱼骨状共晶碳化物,网状二次碳化物及大块状碳化物. 关键词:离心铸造; WC/钢复合材料; 显微组织; 碳化物; centrifugal casting; WC/steel composites......
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! (5 97710 5 5 ); Modeling of added particle distribution in centrifugal force field Abstract: The numerical modeling of the particle distribution in the centrifugal force field was established by using continuity theory and the moving law of particle. The particle distribution process in the centrifugal force field was analyzed theoretically by using......
m3/h)范围内,h/b=1.0时离心泵的扬程,效率远比其他h/b时的低. 图3 不同导叶叶高对离心泵外特性影响 Fig. 3 Influence of different guide vane heights on external characteristics of centrifugal pump 图4所示为不同流量,不同导叶叶高时监测点P3和P4的压力脉动系数随时间的变化曲线.由图4可见....当叶轮压力面尾缘逐渐接近导叶前缘时,径向速度逐渐增大,动静干涉作用对导叶内流场影响不可忽略. 参考文献: [1] CHALGHOUM I, ELAOUD S, AKROUT M, et al. Transient behavior of a centrifugal pump during starting period[J]. Applied Acoustics, 2016, 109......
; 文章编号:1672-7207(2009)03-0706-05 Fault diagnosis of centrifugal compressor vibration based on wavelet power spectrum and rough set theory ZENG Qing-sheng, WANG..., and rough set was used to build the simpler knowledge base of intelligent fault diagnosis system. A new fault diagnosis method on centrifugal compressor vibration based on wavelet power spectrum......
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