The Neimenggu Polytechnic Institute Xiao Keze Zhao Liangyi
Issue 1, Pages: 3-6(1988)
摘要:Computer Simulation of Solidification has been studied experimentally and theoretically using a computer program implementing the assumption that all parts absorbed heat from metal to be a specific medium. Data linked to metalmedium interactions were processed, than two kinds of dynamic boundary condition equations of three sorts of sands are available, test casting employing this method reduces the computer time requirements.
摘要:The author studied the properties of the Zn-27%Al alloy without any addition and in case of adding the B, B-Ti, or rare earth elements in it . Through observation,measuring its microstructure and its mechanical properties, friction wear, etching resistance and so on, the author found out that the ZA27 alloy possesses good characteristics and in some case is possible to be used as a wear resistance material to take the place of ZQSn6-6-3. Some experiment results were analysed theoretically by the author.
摘要:This paper is systematical to introduce the influence upon chemical elements, smelting technique, heat treating technique, modifying effect, refining effect, mechanical properties,etc. of ZL101 alloy as a result of treating ZL101 alloy with potassium fluozirconate, and sum up the technological parameters and good application effect for treating ZLlOl alloy with patassium f luozirconate.
摘要:The firstimportant condition cf die casting process is correctly controlling the technolgic parameters. In this paper it may be proved as follo-w: 1 ) The temperature feia distribution is reasonable;2) The condition of soliditication is improved;3) The dense thickness of surface section is remained. If all factors as above mention will be perfect satisfaction,the pressure tightness of slide valve can be achieved.
摘要:In this paper, the heat transfer at every step of die casting process, from holding furnance, shooting sleeve, runner, and gate to cavity were considered. Based on these considerations and as well as the character of injection system of modern die casting machine, an optimum die temperature for getting high quality castings may be determined.It is suggested that building up a good condition of heat balance,in order to maintain the optimum die temperature should be regarded as one of the important duties of die designer.
The wuhan Institute of Technology Han Hui Wei Zhsolian
Issue 1, Pages: 24-28(1988)
摘要:In this paper, the Theological correlation with leveling and sagging of mould coatings were studied . Using Casson pattern and based on experiments, rheological parameters are presented to evaluate the leveling and sagging of mould coatings quantitatively. Scientific facts and ways were supplied for preparation and application of mould coatings.