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of macro prosity and gas porosity that may exist in the castings, a better pouring system was found. The result shows under the condition of pouring temperature 655℃, mold initial temperature 200.... School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China) Abstract: In order to observe fluid and temperature field of molten metal filling......
alloy slab ingot are caused by increasing of pouring temperature. While with the increase of pouring temperature, the mushy zone between liquidus and solidus shallows. Under the same pouring..., the effect of pulling speed on the solid-liquid interface morphology is more remarkable than pouring temperature, the pulling speed should be controlled under 3.5×10-4 m/s in this computational condition......
of the casting. The higher shell temperature and the lower pouring temperature are advantageous to reducing the hot tearing susceptibility of the casting.Key words:K418 superalloy; auto turbocharger turbine... superalloy for auto turbocharger turbine wheelSHI Zhao-xia, DONG Jian-xin, ZHANG Mai-cang, ZHENG Lei(High Temperature Materials Research Laboratory, University of Science and Technology Beijing,Beijing......
, and thus to accurately predict the non-uniformity of concrete pouring temperature. The concrete temperature field during vibration was also precisely calculated by accurate description of heat absorption characteristics of different parts of concrete when vibration. Based on the above method, the prediction model was used to predict the pouring temperature of a practical engineering. The comparison......
pouring channel and the solid shell inside the channel can be avoided when the pouring temperature is in the range between 660 ℃ and 680 ℃. The length of the vertical section of the serpentine pouring..., the pouring temperature for obtaining the feedstock with suitable microstructure decreases. And some changes occur across the radial microstructures, that is, the spherical grains at the centre transfer......
Trans. Nonferrous Met. Soc. China 24(2014) 3465-3476 Influence of melt pouring temperature and plate inclination on solidification and microstructure of A356 aluminum alloy produced using oblique... to produce semisolid slurry at plate exit. Melt pouring temperature provides required condition of solidification whereas plate inclination enables necessary shear for producing semisolid slurry......
region, as well as the increasing of primary dendrite radius and secondary dendrite arm spacing under the same pouring temperature were caused by increasing casting speed. While under the same casting speed, the deepening of molten pool, shallowing of pasty region, and the increasing of grain size were caused by increasing pouring temperature. In this experimental condition, the casting speed of 10......
, CuAl2+α(Al)-CuAl2 eutectic and Cu9Al4. Additionally, the pouring temperature, cooling mode of the Cu plate surface and start time of the forced cooling after pouring have no effect..., the liquid Al was degassed and refined with C2Cl6 after the temperature of the liquid Al reached the set temperature (20 °C higher than the pouring temperature) and held for 20 min. When......
; 1 Introduction In order to obtain fine-grained ingots, the nucleation frequency must be increased and grain growth must be restricted. Various techniques such as low temperature pouring, rapid... transfer through the crucible walls. The low temperature pouring method is simple to operate, but difficult to control. The rapid cooling method is applied to special field due to different component......
Engineering, Tsinghua University, Beijing 100084, China Received 19 May 2016; accepted 9 October 2016 Abstract: The effects of pouring temperature, vibration frequency, and the number of curves... serpentine channel pouring (VSCP) process in the RDC process. The results show that the pouring temperature, the vibration frequency, and the number of the curves strongly affect the microstructure......