各种卡环根据形状的不同可以分成四大类(如图1):1)直形超重卡环(甲);2)弯形起重卡环(乙);3)末端卡环(丙);4)连接卡环(丁)。不论哪一种卡环主要的锻造工序是这样的:端部摔圆球,摔杆,端部拍扁,弯曲,校正。但在端部拍扁之前应该摔多大的球 A variety of snap ring according to the shape of the different can be divided into four categories (Figure 1): 1) Straight overweight snap ring (A); 2) curved lifting clamp ring (B); 3) 4) Connect the snap ring (D). No matter what kind of snap ring main forging process is like this: the end of the ball throw, wrestling, the end pat flat, curved, corrected. But how big the ball should be dropped before the end is flattened