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Measure the interfacial heat transfer coefficient of heat transfer between the casting and the mold size, affecting rate of solidification casting, and ultimately determines the quality and performance of castings, casting simulation is indispensable boundary conditions, is also the most difficult to measure a parameter. Squeeze casting is a combination of casting and forging features in one of the near net shape process. In this paper, inverse heat conduction algorithm reverse the squeeze casting casting / mold interfacial heat transfer coefficient, the effects of different extrusion pressures squeeze casting solidification process of interfacial heat transfer coefficient of variation. Designed a squeeze casting solidification process temperature measurement devices, and the use of different ZL101A alloy extrusion pressure casting temperature test, obtained at different pressures squeeze casting, mold temperature data points. Nonlinear estimation method based on the principle, VC language combining ANSYS secondary development tool APDL language of the casting process, casting / mold interfacial heat transfer coefficient inverse process, and through the establishment of virtual test, compared to reverse the resulting heat transfer coefficient and Settings heat transfer coefficient of the degree of fit, verify the accuracy of writing anti-counting procedures. Based on the experimental measurements casting / mold temperature at different locations within the data, using the inverse procedure prepared by reverse squeeze pressures at different interfacial heat transfer coefficient of extrusion pressure on the interfacial heat transfer coefficient. Research shows that the extrusion casting process, the interface heat transfer coefficient with the pressing force applied rapidly rose to a maximum value and then gradually decreased; extrusion pressure of the casting / mold interface, the variation of heat transfer coefficient has a significant effect. As the extrusion pressure, the casting / mold interface, increasing the peak heat transfer coefficient, and the interface heat transfer coefficient is larger and longer hold time. 0,25,50,75 MPa peak when the interfacial heat transfer coefficient were 3858.65,6718.96,7250.82,8020.44 W / (m2 · ℃). Finally, numerical simulation applications, will reverse the resulting interfacial heat transfer coefficient as the initial boundary conditions squeeze casting temperature field simulation, compared to the inverse of the casting did not participate in the center of the simulated temperature and measured temperature, 0,25,50, 75MPa when the corresponding maximum error of 5.52%, 8.81%, 4.73%, 6.04%, verified established herein squeeze casting experiment and interfacial heat transfer coefficient inverse feasibility and accuracy. In this experiment, as the extrusion pressure increases, the solidification time is reduced casting center, 25MPa after the extrusion pressure of the solidification time becomes less significant.
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