近年来,为了获得优质、高效、低成本的铝铸件,很多国家在低压铸造工艺和设备方面都进行了许多改进,并取得了不少新的发展。以往由于低压铸造设备使用率低,保养维修困难,在使用上存在一些问题,近年来在有些国家已有所改进,下面简要地介绍一些情 In recent years, in order to obtain high-quality, high-efficiency and low-cost aluminum castings, many countries have made many improvements in the low-pressure casting process and equipment, and many new developments have been made. In the past due to the low utilization rate of low-pressure casting equipment, maintenance and repair difficulties, there are some problems in use, in some countries in recent years has been improved, the following brief introduction of some love