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滚角与侧滚角系数 侧滚角是轮轴线与水平面的夹角,侧滚角系数则是侧滚角与2倍横移量的比值.当3种车轮踏面与该60N钢轨道岔断面匹配时,其侧滚角与侧滚角系数随横移量的分布如图7所示. 图7 侧滚角和侧滚角系数随轮对横移量的分布 Fig. 7 Distributions of roll angle and roll angle coefficient with wheelset lateral...滚角与侧滚角系数,等效锥度和轮径差的影响. 2.1 轨距 当窄轨距为1 432 mm,标准轨距为1 435 mm,宽轨距为1 440 mm时,3种车轮踏面与该钢轨断面匹配时的接触几何参数如图9所示. 图9 轮轨接触几何参数随轮对横移量的分布 Fig. 9 Distributions of wheel-rail contact geometric parameters with wheelset......
words: wettability; contact angle; aluminium; alumina; SiC; graphite 1 Introduction Understanding the wetting behaviour of aluminium on ceramics is crucial for the improvement of the aluminium... molten aluminium and solid alumina [1-11] at temperatures of interest (as shown in Fig. 1). However, there is a considerable spread in the experimental results. Therefore, the contact angle under high......
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="ChDivSummary">The effect of open porosity of Y2O3 ceramic on the apparent contact angle and interaction between molten Ti47 Al alloy and Y2O3 ceramic substrates under pure Ar was investigated by using...Effect of Open Porosity of Y2O3 Ceramic on the Apparent Contact Angles and Interactions Between Ti47Al Alloys and Y2O3 CeramicChao Ran1,2,Hua-rui Zhang1,2,Hu Zhang1,2,Bei-bei Wan1,2,Peng Bai1,21......
volatilize on the liquid droplet surface and destroy the new aluminium oxide on droplet surface, adding Mg in aluminium can reduce the contact angle of aluminium on fly ash and improve the wettability. SiO2... influence is reduced and the non-reactivity wetting affects chiefly on the contact course. Key words: contact angle; aluminium alloy; sessile drop technique; fly ash 金属基复合材料的性能, 不仅取决于金属基体和增强相材料的性能, 更主要地取......
analysis of high contact ratio gears based on pressure angle[J]. Journal of Central South University(Science and Technology), 2014, 45(11): 3792-3799. [10] 魏伟锋, 张广鹏, 杜真一, 等. 参数化直线共轭内啮合泵齿廓设计方法[J]. 机械工程... of internal gear drive with arc contact path WANG Yanzhong, LI Yuan, REN Shaoying, ZHAO Pengkun (School of Mechanical Engineering & Automation, Beihang University, Beijing 100191, China) Abstract......
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Properties of vacuum cast CuCr25 and CuCr25Te contact material XIU Shi-xin(修士新)1, YANG Ren(杨 韧)2, XUE Jun(薛 军)3, WANG Jin-xing(汪金星)3 1. State Key Laboratory of Electrical Insulation...; Abstract: The CuCr25 and CuCr25Te contact materials were manufactured by vacuum casting process. The microstructures of two alloys were observed by metallographic microscope......