胎模锻造,对于形状简单,内孔孔径尺寸和内孔孔深尺寸之比在3倍以上的锻件其成形比较容易,将合适的坯料直接置于胎模型腔内,即可压印冲出盲孔,胎模与锻件的分离也比较方便。但对于锻件的内孔孔径尺寸与内孔孔深尺寸之比在3倍以下的深盲孔类锻件,用模锻造的方法生产就比较困难,一般情况下,只能在锻件上压个凹坑,锻成肥头大耳的笨重锻件,这样不但浪费了大量的原材料,同时给后续机加工也带来不少的麻烦。如图1所示的 Tire forging, the shape is simple, the hole diameter and the hole size of the hole depth ratio of more than 3 times the forging of its forming easier, the right blank directly into the mold cavity, you can stamping out blind Hole, tire and forgings separation is also more convenient. However, for the forging bore diameter size and the ratio of the depth of the bore hole depth of less than 3 times the deep blind hole forgings, die forging method is more difficult to produce, under normal circumstances, only forging a pressure on a pit , Bulky fat forging big forging, not only wasted a lot of raw materials, but also to follow-up machining also brought a lot of trouble. As shown in Figure 1