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浅谈挂式高精度预埋螺栓施工方法房平,李艳云南文山铝业有限公司摘 要:挂式高精度预埋螺栓多用于大型工业厂房的设备安装,预埋螺栓施工的质量直接决定了后续的设备安装及生产运行.为保证施工质量,我们采用了一种预埋螺栓组套安装的施工方法,一台设备所有螺栓通过特制固定架形成一个整体进行预埋,能有效保证螺栓的平面位置及垂直度,满足设备安装及生产要求,取得了较好的效果.关键词:挂式高精度预埋螺栓;组套安装;大型工业厂房;平面位置;垂直度;固定架;模板安装;......
): 311-321. [8] FENG Jian, ZHANG Chang-rui, HUANG Wei-dong. Numerical simulation on near-rapid directional solidification process of Al bar sample [J]. The Chinese Journal of Nonferrous Metals, 2004, 14(3... Numerical simulation of mold-temperature-control solidification YOU Dong-dong(游东东), SHAO Ming(邵 明), LI Yuan-yuan(李元元), ZHOU Zhao-yao(周照耀) Department of Mechanical Engineering, South China......
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has been regarded during directional solidification in recent years. CHEN et al[15] have studied Pb-2.2%Sb and Al-2%Cu (mass fraction) alloy with different sample diameters, and it is recognized..., 33A: 3763-3775. [19] ZHANG W G, LIU L, HUANG T W, ZHANG J H. Determining the temperature measurement of temperature gradient on the ZMLMC directional solidification apparatus and the effect......
January 2011 Abstract: Numerical investigations on the flow field in Ti-Al melt during rectangular cold crucible directional solidification were carried out. Combined with the experimental results, 3-D... Trans. Nonferrous Met. Soc. China 22(2012) 157-163 Numerical calculation of flow field inside TiAl melt during rectangular cold crucible directional solidification YANG Jie-ren, CHEN Rui-run, DING......
Nucleation and growth of high purity aluminum grains in directional solidification bulk sample without electromagnetic stirring ZHANG Jiao(张 佼)1, 2, SHU Da(疏 达)1, RAO Qun-li(饶群力)3... of the temperature gradient as the growth rate increases. Because the 2-D growth is quite different from the real materials processing conditions, No?l et al[5, 6] and Kauerauf et al[7, 8] investigated......
modelling of copper and brass upcasting [J]. Metall Trans B, 1999, 30: 75-98. [5] DING Yu-tian, XU Guang-ji. Numerical simulation of solidification of continuously cast pure Al [J]. Foundry Technology... Numerical simulation of solidification morphologies of Cu-0.6Cr casting alloy using modified cellular automaton model TSAI De-chang, HWANG Weng-sing Department of Materials Science......
was introduced. The distribution regularities of temperature, temperature gradient, Von Mise’s effective stress, X-directional, Y-directional and Z-directional thermal stresses were studied. LMDS... in the district near the specimen; while it is small and dispersive in the district far away from the specimen; 4) The temperature gradient in substrate is mainly along the direction parallel to the substrate......
[7-17]. Seed making is a key step in controlling the structure of TiAl-based alloys in directional solidification. There are several seed making methods developed by LEE et al[10]. The method... the favorable growth direction of α-Ti3Al is (0001). The structure of a directional solidification sample will grow directly from the sides of the columnar grains to produce a lamellar structure......