铝合金轮毂低压铸造模具的冷却方法探索

Exploration of Die Cooling Mode of Al-Alloy Wheels in Low Pressure Casting

针对铝合金轮毂低压铸造时,铸件的加工面容易产生表面热收缩,进而在涂装后产生气泡点,造成产品报废的问题,对低压铸造模具的冷却方式进行了研究。结果表明,通过改变模具下模的冷却方式,以保证铸件表面的顺序凝固,从而消除了工件表面热收缩现象,大幅提高了铸造的合格率。

Aimed at the problems that the surface thermal shrinkage easily appear in the machined surface of aluminum alloy wheels in low pressure die casting, then many bubble points appear in the surface after coating, which results in the product scrapped, the cooling mode of the dies for low pressure casting was studied. The results show that the thermal shrinkage on casting surface can be eliminated by changing the cooling mode of the lower mold to ensure the order solidification of the casting surface, the pass rate of the castings substantially increase.