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) in spinning missiles. The spin angular rate with large amplitude will cause the accuracy of the conventional velocity numerical integration algorithm in SINS to decrease dramatically when the ballistic... integration algorithm was optimized for SINS in spinning ballistic missiles. The superiority of the optimized algorithm over the conventional one was analytically derived and validated by the simulation......
] analyzed the formation of thin-walled shells with inner reinforcing ribs formed by conventional spinning technology through the design of three different blanks. The impacts of spindle speed... the spinning process based on physical experiments. And the model was optimized by adding new design points based on the expected improvement criterion. During multi-pass conventional spinning, roller......
Trans. Nonferrous Met. Soc. China 28(2018) 328-339 Effects of backward path parameters on formability in conventional spinning of aluminum hemispherical parts Tian GAN1,2, Zhong-qi YU1,2, Yi-xi... 20 February 2017 Abstract: During multi-pass conventional spinning, roller paths combined with the forward and the backward pass are usually used to improve the material formability. In order......
]. International Journal of Machine Tools and Manufacture, 2003, 43: 1419-1435 [2] EL-KHABEERY M M, FATTOUH M, EL-SHEIKH M N. On the conventional simple spinning of cylindrical aluminium cups [J]. International... University, 2007: 9-11 [8] MA Fei, YANG He, ZHAN Mei. Research on the effect of material parameters on the multi-pass conventional spinning process[C]// The Second International Symposium on Advanced......
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or conventional spinning. 2) Material parameters The blank material is LF2M, of which some material parameters are listed in Table 2. The stress-strain curve of the material is obtained by the tensile test... of stress and strain distribution of first-pass conventional spinning under different roller traces [J]. Journal of Materials Processing Technology, 2002, 129: 326-329. [7] XUE Ke-min, L? Yan. Elastic......
Mg-9Gd-3Y-0.3Zr合金的蠕变行为李会会,王斌,易丹青,刘会群,黄翔,田哲中南大学材料科学与工程学院摘 要:研究Mg-9Gd-3Y-0.3Zr合金在不同温度(200300℃)和应力(30110MPa)条件下的蠕变行为,利用金相显微镜,透射电镜等分析蠕变过程中合金组织的演变.结果表明:温度较低时(200250℃),蠕变曲线分为瞬时和稳态蠕变两部分,利用Arrhenius公式计算出合金的平均应力指数n=2,由此判断蠕变机制是晶界滑移机制,平均蠕变激活能Q=85.6kJ/mol;当温度为300℃时,合金......
Mg-5Y-3Sm-0.8Ca-0.5Sb合金的蠕变行为张清,李全安,陈君,张兴渊摘 要:通过蠕变试验,组织观察和理论计算,研究了Mg-5Y-3Sm-0.8Ca-0.5Sb合金在200℃,50MPa和200℃,70MPa条件下的蠕变行为.结果表明,Mg-5Y-3Sm-0.8Ca-0.5Sb合金在200℃时具有与商用耐热镁合金WE43相近的蠕变性能;随着蠕变应力的增大,合金的晶粒尺寸变化不大,晶界变得不明显;应力指数计算值显示,此时蠕变受扩散和晶界滑动两种机制控制.关键词:Mg-5Y-3Sm-0......
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Trans. Nonferrous Met. Soc. China 30(2020) 1169-1182 Effects of melt spinning process parameters and wheel surface quality on production of 6060 aluminum alloy powders and ribbons Sultan OZTURK1..., Gaziantep University, Gaziantep, Turkey Received 1 August 2019; accepted 17 February 2020 Abstract: The aim of this study is to investigate the surface quality of the melt spinning wheel, which......
