锻造锤的发明让他们省力不少。
So, it is always formed on the die-forging hammer by the open-die forging with insert mode.液压支架中的缸底生产批量不是太大,外形多变,所以它多在锤上用镶块模开式模锻成形。
Different forging hammer cogging-down way will lead to different evenness degree and graininess of eutectic carbide.锻锤开坯方式不同其共晶碳化物均匀度、颗粒度有很大的差异。