在低压铸造金属型浇注的情况下,往往因保压时间掌握不好而造成浇口“冻结”(即浇口长度超过了铸型设计中的浇口长度,并延伸到比浇口大的浇道)。这种“冻结”造成铸件出型困难,有时不得不停止浇注,因而降低生产率。因此,在浇注过程中除了要选择适宜的保压时间外,加强浇口处的保温效果也是十分重要的。比较理 In the case of low pressure cast metal pouring, the gate is often “frozen” due to poor hold time (ie, the gate length exceeds the length of the gate in the mold design and extends over the gate Road). This “freezing” causes the castings to be difficult to produce, sometimes having to stop pouring, thereby reducing productivity. Therefore, in addition to pouring process to select the appropriate dwell time, strengthen the gate at the insulation effect is also very important. More reasonable