铝合金轮毂低压铸造充型时间检测技术开发与应用

Development and Application of Filling Time Detection Technology for Low Pressure Casting of Aluminum Alloy Wheels

低压铸造充型参数设计是否合理,直接影响铸造铝合金轮毂产品的内部质量,之前我司充型参数一般依靠理论计算,但受浇道截面尺寸、滤网种类、产品结构等因素影响,充型参数设定不能达到最优。为准确判断铝液实际充型完成时间,开发了低压铸造充型时间检测技术。已将此技术成功应用于多个铝合金轮毂铸造难题的研究及改善中,比如大尺寸小浇道产品安装面氧化皮,铸件缩松、气孔等。另外,基于此技术还对低压铸造机充型控制程序进行了优化改进,实现了充型时间的智能化控制,保证充型完成后及时加压,显著提高了产品质量。

Whether the design of filling parameters in low-pressure casting is reasonable directly affects the internal quality of cast aluminum alloy hub products.Our filling parameters generally rely on theoretical calculation previously,but affected by gate section size,filter type,product structure and other factors,the setting of filling parameters cannot reach the optimal.In order to accurately judge the actual filling time of liquid aluminum,the filling time detection technology of the low pressure casting was developed.We have successfully applied this technology to the research and improvement of many aluminum alloy wheel casting problems,such as large size and small gate product mounting surface oxidation skin,casting dispersed shrinkage,blowhole,etc.In addition,based on this technology,the mold filling control program of the low pressure casting machine was optimized and improved to realize the intelligent control of mold filling time,ensure the timely pressure after the completion of the mold filling,and significantly improve product quality.