随着工业生产的发展,重型机器设备愈来愈大,对各种巨型锻件的需要量也愈来愈多.巨型圈类锻件是某些重型机器设备不可缺少的零件之一.例如重型起重吊车的回转轴承,重型设备的传动大齿圈等.这些圈类锻件都是采用整体锻造或分段锻造后焊接起来的.最近我厂锻造直径将近10米的大轴承锻件就是采用后一种方法(图1),具体工艺过程介绍如下: With the development of industrial production, heavy machinery and equipment are getting larger and larger, and the demand for various giant forgings is also increasing .Magnetic ring forgings are one of the indispensable parts of some heavy machinery and equipment, such as heavy lifting Crane slewing bearings, heavy equipment transmission gear ring, etc. These ring forgings are used forging or segmented forging welded together recently I plant forging nearly 10 meters in diameter for large bearing forgings is the latter method (Figure 1), the specific process described below: