Determination of interfacial heat transfer coefficients for squeeze casting of magnesium alloy AZ91 with various section thicknesses

2020 ◽  
pp. 1-14
Author(s):  
Luyang Ren ◽  
Yintian Fu ◽  
Zixi Sun ◽  
Henry Hu
Keyword(s):  
Heat Transfer ◽  
Magnesium Alloy ◽  
Squeeze Casting ◽  
Interfacial Heat Transfer ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Alloy Az91 ◽  
Magnesium Alloy Az91

Experimental study on interfacial heat-transfer coefficients at the casting/die interface in squeeze casting under transient condition

2018 ◽  
Vol 41 (7) ◽  
pp. 802-807
Author(s):  
A. P. Venkatesh ◽  
K. Logesh ◽  
Sirigireddy. Manjith Kumar Reddy ◽  
Omer Ahmed Khan ◽  
Syed Sadiq Ur Rehman ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Squeeze Casting ◽  
Transient Condition ◽  
Interfacial Heat Transfer ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients

Determination of interfacial heat transfer coefficients in a sand mould casting process using an optimised inverse analysis

2015 ◽  
Vol 78 ◽  
pp. 682-694 ◽  
Author(s):  
Gianfranco Palumbo ◽  
Vito Piglionico ◽  
Antonio Piccininni ◽  
Pasquale Guglielmi ◽  
Donato Sorgente ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Inverse Analysis ◽  
Casting Process ◽  
Interfacial Heat Transfer ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Sand Mould ◽  
Mould Casting

Determination of Metal/Die Interfacial Heat Transfer Coefficients in Squeeze Casting of Wrought Aluminum Alloy 7075 With Variations in Section Thicknesses and Applied Pressures

2016 ◽  
Vol 139 (2) ◽  
Author(s):  
Xuezhi Zhang ◽  
Li Fang ◽  
Henry Hu ◽  
Xueyuan Nie
Keyword(s):  
Heat Transfer ◽  
Squeeze Casting ◽  
Transient Heat Conduction ◽  
Hydraulic Press ◽  
Heat Fluxes ◽  
Measured Temperature ◽  
Interfacial Heat Transfer ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Wrought Aluminum

Squeeze casting of wrought aluminum 7075 was carried out on a 75-ton hydraulic press. Metal/die interface heat transfer phenomena in squeeze casting of the alloy were investigated. To facilitate experimental measurements, a five-step casting mold was designed for the experiments. The five-step casting consisted of five different section thicknesses of 2, 4, 8, 12, and 20 mm. Squeeze casing experiments were performed under the applied hydraulic pressures of 30, 60, and 90 MPa. Temperatures were measured at the casting surface and at various specific locations inside the die. At each step, thermocouples were placed at 2, 4, and 6 mm away from the inside die face. Based on the measured temperature results, the interfacial heat transfer coefficients (IHTCs) and heat fluxes were determined by solving the one-dimensional transient heat conduction equation with the inverse method. With increasing the casting section thicknesses from 2 to 20 mm, the peak IHTC values varied from 1683.46 W/m2 K to 9473.23 W/m2 K, 2174.78 W/m2 K to 13,494.05 W/m2 K, and 3873.45 W/m2 K to 15,483.01 W/m2 K for the applied hydraulic pressures of 30, 60, and 90 MPa, respectively.

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