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often produces low pressure area and oil reflux in the high-speed opening and closing process of the spool, causing cavitation and vortex and other phenomena. These phenomena will affect the stability... the appearance of low pressure area and oil backflow in the process of high speed opening and closing of spool. The stability of flow field and the flow rate of high speed switch valve are improved. Finally......
differential pressure, the reactant gas is carried into the reaction region and the product gas is carried out of the reaction region under the condition that the gas and the solid skeleton can have gas-solid... and chemical properties before and after the reaction, such as density, molar mass, gas pressure, and solid volume, which makes the process of gas flow through porous media very complicated [16-19......
C2 structure separator exhibits a high collection efficiency for fine alloy particles under the same gas atomization condition. These two structure separators in series connection can effectively... performance of combined separator for gas atomized powder production LIU Yang, ZHANG Guo-qing, XU Wen-yong, ZHENG Liang, LI Zhou (Science and Technology on Advanced High Temperature Structural Materials......
efficiency due to its high pressure ratio and low turbine outlet temperature (TOT). Therefore, the aeroderivative gas turbine provides a new choice for power generation. The simple cycle however... three-shaft gas turbine and HAT cycle An aeroderivative three-shaft gas turbine is taken as the simulation object. The gas turbine contains two compressors (the low-pressure and the high-pressure......
J. Cent. South Univ. Technol. (2008) 15(s1): 457-461 DOI: 10.1007/s11771-008-399-7 Rheological properties of oil-based drilling fluids at high temperature and high pressure ZHAO Sheng-ying(赵胜英... viscosity, plastic viscosity and yield point of oil-based drilling fluids at high temperature and pressure was established using the method of regressive analysis. It is confirmed that the calculated data......
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by a high-velocity gas stream carrying solid particles as the atomization medium, was introduced. The characteristics of powders prepared by common gas atomization and dual-phase flow atomization...; additionally, they possess a finer microstructure and higher cooling rate under the same atomization gas pressure and the same gas flow. The Weber number in the crash criteria of liquid atomization......
of such powders is the inert gas atomization of metal alloy melts.To fulfill these requirements, the metal alloy is usually produced in a vacuum induction melting furnace (VIGA = vacuum induction melting/gas atomization) and poured by means of a preheated tundish system into a gas nozzle where the metal stream is disintegrated by a high kinetic energy inert gas jet.The produced micro-droplets solidify......
Hall-flowmeter [J]. Powder Technology, 2011, 205(1): 71-80. [12] KAWAMURA Y, MANO H, INOUE A. Synthesis of ZrC/Zr55Al 10Ni5Cu30 metallic-glass matrix composite powders by high pressure gas atomization...-developed double-nozzle gas atomization technique was used to produce AlSi10Mg powder. Effects of delivery tube diameter, gas pressure, and melt superheat on powder characteristics were investigated......
Strengthening pelletization of manganese ore fines containing high combined water by high pressure roll grinding and optimized temperature elevation systemZHU De-qing(朱德庆)1, YU Wei(余为)1, 2, ZHOU Xian... affects the roasting performance of pellets. In this work, high pressure roll grinding (HPRG) process and optimization of temperature elevation system were investigated to improve the strength......
