Paper Title:

Parameters Optimization of Semisolid Diecasting Process for Air-Conditioner’s Triple Valve in HPb59-1 Alloy

Periodical Advanced Materials Research (Volumes 129 - 131)
Main Theme Material and Manufacturing Technology
Edited by Xie Yi and Li Mi
Pages 936-941
DOI 10.4028/www.scientific.net/AMR.129-131.936
Citation Guan Hai Yan et al., 2010, Advanced Materials Research, 129-131, 936
Online since August, 2010
Authors Guan Hai Yan, Sheng Dun Zhao, Zheng Hui Sha
Keywords HPb59-1, Orthogonal Test, Parameter Optimization, Semisolid Diecasting, Simulation
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The disadvantages of air-conditioner’s triple valve in HPb59-1 alloy processed by traditional solid state hot forging, such as larger forming loads, lower material utilization, larger subsequent machining allowance, nonuniform microstructure, are put forward. However, semisolid diecasting forming which can overcome the above shortcomings is a fascinating technology. The process paremeters which had a larger influence on filling ability of semisolid slurry and casting quality, such as pouring temperature, shot velocity and preheated temperature of the die, were chosen. Furthermore, based on orthogonal test, the semisolid diecasting process of a certain type triple valve was simulated with FLOW-3D. According to the analysis of temperature field, pressure field and surface defect concentration, the optimal process parameters such as pouring temperature 897.25 °C, shot velocity 1.5 m/s and preheated temperature of the die 260 °C, were obtained, and the effectiveness of the technology was well demonstrated by numerical simulation.

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