scholarly journals 517 Thermal Stress and Heat Transfer Coefficient for Stalk in the Low Pressure Die Casting Machine dipping into Molten Metal

2010 ◽  
Vol 2010.63 (0) ◽  
pp. 191-192
Author(s):  
Hiroki OGURA ◽  
Yusuke HIGASHI ◽  
Hendra ◽  
Wenbin LI ◽  
Nao-Aki NODA
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Thermal Stress ◽  
Transfer Coefficient ◽  
Molten Metal ◽  
Die Casting ◽  
Casting Machine ◽  
Low Pressure ◽  
Low Pressure Die Casting ◽  
Pressure Die Casting

scholarly journals Thermal Stress and Heat Transfer Coefficient for Ceramics Stalk Having Protuberance Dipping into Molten Metal

2010 ◽  
Vol 4 (8) ◽  
pp. 1198-1213 ◽  
Author(s):  
Nao-Aki NODA ◽  
Hendra ◽  
Wenbin LI ◽  
Yasushi TAKASE ◽  
Hiroki OGURA ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Thermal Stress ◽  
Transfer Coefficient ◽  
Molten Metal

Three-Dimensional Surface Heat Transfer Coefficient and Thermal Stress Analysis for Ceramics Tube Dipping into Molten Metal

2010 ◽  
Vol 452-453 ◽  
pp. 233-236 ◽  
Author(s):  
Yasushi Takase ◽  
Wen Bin Li ◽  
Hendra ◽  
Hiroki Ogura ◽  
Yusuke Higashi ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Thermal Stress ◽  
Transfer Coefficient ◽  
Molten Metal ◽  
Thermal Stresses ◽  
Three Dimensional ◽  
Surface Heat ◽  
Surface Heat Transfer ◽  
Surface Heat Transfer Coefficient

The low pressure die casting machine has been used in industries because of its low-cost and high efficiency precision forming technique. In the low pressure die casting process is that the permanent die and filling systems are placed over the furnace containing the molten alloy. The filling of the cavity is obtained by forcing the molten metal, by means of a pressurized gas, to rise into a ceramic tube, which connects the die to the furnace. The ceramics tube, called stalk, has high temperature resistance and high corrosion resistance. However, attention should be paid to the thermal stress when the ceramics tube is dipped into the molten metal. It is important to reduce the risk of fracture that may happen due to the thermal stresses. To calculate the thermal stress, it is necessary to know the surface heat transfer coefficient when the ceramics tube dips into the molten metal. In this paper, therefore, the three-dimensional thermo-fluid analysis is performed to calculate surface heat transfer coefficient correctly. The finite element method is applied to calculate the thermal stresses when the tube is dipped into the crucible with varying dipping speeds and dipping directions. It is found that the thermal stress can be reduced by dipping slowly when the tube is dipped into the molten metal.

GS0603 Thermal Stress Analysis for Ceramics Stalk in Low Pressure Die Casting

2008 ◽  
Vol 2008 (0) ◽  
pp. _GS0603-1_-_GS0603-2_
Author(s):  
Yasushi TAKASE ◽  
Hendra ◽  
Nao-Aki NODA ◽  
Masakazu OOSATO ◽  
Hiroki OGURA
Keyword(s):  
Thermal Stress ◽  
Stress Analysis ◽  
Die Casting ◽  
Low Pressure ◽  
Thermal Stress Analysis ◽  
Low Pressure Die Casting ◽  
Pressure Die Casting
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