铸件上放置冒口是消除铸件缩孔的一般手段。对厚大断面的铸件是不可缺少的。铸件愈大,冒口也随之增大,我厂长期以来生产柴油机上的大小飞轮,由于壁厚较大,需放置不同类型的冒口,因此,对造型和清理操作,增加了不少麻烦,同时也降低了金属材料的利用率,造成很大的浪费。那么,对于壁厚大的铸件,能否减少冒口,甚致取消冒口呢!围绕着这个问题,就我 Cast riser on the casting is to eliminate the general means of shrinkage casting. The thick section of the casting is indispensable. The larger the casting, riser also will increase, our factory has long been the production of diesel engines on the size of the flywheel, due to the larger wall thickness, the need to place different types of riser, so modeling and cleaning operations, adding a lot of trouble , But also reduce the utilization of metal materials, resulting in a great waste. So, for the wall thickness of the casting, can reduce the riser, even cancel the riser it! Around this issue, I