铝合金电磁低压铸造工艺试验及应用

研究了铝合金电磁低压铸造工艺参数关系及控制方法;通过试验及数学分析研究确定了电磁驱动力与电流、流量与电流之间的关系及计算模型,并进行了电磁低压铸造和气压低压铸造实际铸件性能对比。结果表明,电磁低压铸造的流量大小与电极电流成线性关系;并且当电极电流一定时,随出液口高度增加,流量减小,电磁低压铸造生产的铸件性能得到明显提高;电磁低压铸造方法比传统气压低压铸造控制过程更精确。

Electromagnetic Low Pressure Casting Technology for Aluminum Alloy

The processing parameters relationship and control method of electromagnetic low pressure casting for aluminum alloy have been investigated. The relationship between electromagnetic driving force and electric current as well as flux volume and electric current, and its mathematical model have been determined by experiment and mathematical analyses. Meanwhile, the properties of castings in electromagnetic low pressure casting and in conventional low pressure casting have been compared. It is found that the aluminum liquid flux volume of electromagnetic low pressure casting presents a strictly linear relation with the electrode current with a given magnetic inductivity. With a given electrode current, the aluminum liquid flux volume can be decreased with raising the height of liquid aluminum alloy outlet, which is helpful for improving the properties of electromagnetic low pressure castings. The accuracy of control process in electromagnetic low pressure casting is obviously superior to that in conventional low pressure casting.