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): 1689-1694. KONG Gangqiang. Numerical analysis on negative frictional resistance of pile influenced by taper angles[J]. Chinese Journal of Underground Space and Engineering, 2016, 12(6): 1689-1694......
) phase is oxidized to Fe3O4 as presented in Figure 4(b). After oxidative desulfurization treatment, the diffractions due to fayalite taper off, whereas those due to magnetite are gradually enhanced......
to the shear test simulation. The volume compression test device of granule medium is designed, as shown in Fig. 6, and NGM is selected as the medium, with the barrel diameter of 80 mm and the granular......
of the dynamic experimental device were as follows. 1) Tailings slurry was mixed with FAMC uniformly using an electric mixer in a 50 L mixing barrel. The mixed slurry was pumped to the feeding inlet......
of the granular charging barrel system; p1 is the pressure of punch; and ph is the transfer pressure at the distance of h. The sheet metal during the HGMF process is in a free drawing-bulging state before..., 3(1): 279-282. [19] LANG Li-hui, LIU Kang-ning, CAI Gao-shen, GUO Chan. Numerical research on forming technology of complicated taper-shaped part of TC4 titanium alloy by thermal deep drawing......
, the disadvantages of using the stirrer could include large power consumption, limitations to the working temperature (above 1000 °C), temperature control across the barrel and the possible reaction of the melt......
barrel is 1.0 m long with inner diameter of 0.8 m and external diameter of 1.0 m. 2) The heating mode has constant current, voltage and power, with iron chromium aluminum alloy mesh as heating element......
, and the length of roll barrel is 130 mm. The maximum roll force is 200 kN. The speed ratio of the top roll to the bottom roll is 1.2, and the rolling linear speeds of the top and bottom rolls are 28.6......
at 838-853 K for 20 min. Meanwhile, the mold was preheated to the preset temperature, and then the lubricant was sprayed uniformly. Finally, the re-melted billet was placed in the barrel of the SC......
of barrel compression test was developed by EBRAHIMI and NAJAFIZADEH [20] to determine the friction factor by the following relationship: ......
