Application of Numerical Simulation Technology on the Design of Camera Shell during Die Casting Process

2007 ◽  
Vol 26-28 ◽  
pp. 1041-1044
Author(s):  
Hong Yan ◽  
Zhi Hu ◽  
Ti Shuan Suan
Keyword(s):  
Numerical Simulation ◽  
Material Science ◽  
Die Casting ◽  
Casting Process ◽  
Practical Result ◽  
Die Casting Process ◽  
Computer Numerical Simulation ◽  
The Cost ◽  
Pressure Die Casting

The technology of computer numerical simulation on casting process is an important frontal field of material science and technology. The numerical simulations of camera shell in the pressure die casting process were carried out. The distributions of temperature and solidification time in the filling process were obtained. Based on the simulated results and the Niyama criterion G/ R , the positions of slack were predicted, which were agreement with the practical result. Consequently, an improved scheme was presented, in which the workpiece defects were obviously reduced. So it’s significant for the application of numerical simulation on improving the quality of the casting, shortening the period of producing, reducing the cost and guiding the engineer for taking reasonable method to optimize the technological design.

scholarly journals Melt Quenched High Pressure Die Casting (MQ-HPDC) of an A356 Alloy

2013 ◽  
Vol 765 ◽  
pp. 195-199
Author(s):  
Shou Xun Ji ◽  
Bo Jiang ◽  
Wen Chao Yang ◽  
Zhong Yun Fan
Keyword(s):  
High Pressure ◽  
Die Casting ◽  
A356 Alloy ◽  
Casting Process ◽  
Thermal Mass ◽  
High Pressure Die Casting ◽  
Preheating Temperature ◽  
Die Casting Process ◽  
Pressure Die Casting

Melt quenched high pressure die casting (MQ-HPDC) is a new die casting process developed recently for improving the casting quality of the conventional HPDC process. In the MQ-HPDC process, an alloy melt with a specified dose and superheat is quenched by directly pouring the alloy melt into a preheated metallic container. The thermal mass and preheating temperature of the container is selected so that the alloy melt is quenched just below the alloy liquidus and heterogeneous nucleation takes place during the melt quenching. The quenched alloy melt is then fed immediately into the shot sleeve for component casting. In this paper we present the MQ-HPDC process and the resultant microstructures and mechanical properties of a MQ-HPDC A356 alloy.

Increase Pressure and Homogeneity of Die Castings from EN AC 47100 Alloy

2015 ◽  
Vol 729 ◽  
pp. 108-113
Author(s):  
Stefan Gaspar ◽  
Jan Pasko
Keyword(s):  
Die Casting ◽  
Casting Process ◽  
Internal Quality ◽  
Control Methods ◽  
Technological Factors ◽  
Great Reliability ◽  
Die Casting Process ◽  
Die Castings ◽  
Pressure Die Casting

In the pressure die casting process, a great attention is paid to a die castings quality improvement. This quality has to be ensured with a great reliability and, at the same time, it is necessary to apply control methods to a technological process which provide a complete picture of a die casting process as well as internal quality of the produced die castings. It requires control of the present technological factors of a pressure die casting process. The contribution deals with the effect of die casting plunger velocity inside a filling chamber on mechanical properties of a die casting product from EN AC 47100 alloy.

Numerical simulation of AZ91D alloy automobile plug in pressure die casting process

2007 ◽  
Vol 187-188 ◽  
pp. 349-353 ◽  
Author(s):  
Hong Yan ◽  
Wenwei Zhuang ◽  
Yong Hu ◽  
Qiansheng Zhang ◽  
Hong Jin
Keyword(s):  
Numerical Simulation ◽  
Die Casting ◽  
Casting Process ◽  
Az91d Alloy ◽  
Die Casting Process ◽  
Pressure Die Casting

Predicting heat extraction due to boiling in the cooling channels during the pressure die casting process

2000 ◽  
Vol 214 (3) ◽  
pp. 465-482 ◽  
Author(s):  
L D Clark ◽  
I Rosindale ◽  
K Davey ◽  
S Hinduja ◽  
P J Dooling
Keyword(s):  
Heat Transfer ◽  
Forced Convection ◽  
Die Casting ◽  
Casting Process ◽  
Nucleate Boiling ◽  
Heat Extraction ◽  
Film Boiling ◽  
Cooling Channels ◽  
Die Casting Process ◽  
Pressure Die Casting

The effect of boiling on the rate of heat extraction by cooling channels employed in pressure die casting dies is investigated. The cooling effect of the channels is simulated using a model that accounts for subcooled nucleate boiling and transitional film boiling as well as forced convection. The boiling model provides a continuous relationship between the rate of heat transfer and temperature, and can be applied to surfaces where forced convection, subcooled nucleate boiling and transitional film boiling are taking place in close proximity. The effects of physical parameters such as flow velocity, degree of subcooling, system pressure and bulk temperature are taken into account. Experimental results are obtained using a rig that simulates the pressure die casting process. The results are compared with the model predictions and are found to show good agreement. Instrumented field tests, on an industrial die casting machine, are also reported. These tests show the beneficial effects of boiling heat transfer in the pressure die casting process, including a 75 per cent increase in the production rate for the test component.

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