| 摘要 |
The present invention relates to a composite forged part of an inner race and a boss. The present invention comprises: an inner race preliminary hot forging area; and a boss preliminary hot forging area positioned inside the inner race preliminary hot forging area. The inner race preliminary hot forging area comprises: an inner race hot forging area; and an inner race hollow area positioned in an inner diameter unit of the inner race hot forging area. The boss preliminary hot forging area comprises: a boss hot forging area; and a boss hollow area positioned in an inner diameter unit of the boss hot forging area. A boss forged part is disposed in the inner diameter unit of the inner race hot forged part to maximally use pierced scrap of an inner race so as to reduce input weight of a material. |
