紧急勾贝(图1)是货车制动配件中的主要零件,在我们车间是成批生产。过去我们采用套筒式胎模焖制,产量和质量一直提不高。在大破自由锻锤不能模锻的迷信后,苦战了五昼夜,终于把这种锻件在蒸汽锤上改用模锻成功,使产量猛增四倍, The emergency cabbages (Figure 1) are the main components of truck brake components and are produced in batch on our shop floor. In the past we used a sleeve-type fetal mold stewing, production and quality has been raised is not high. After breaking the superstition that the forged hammer can not be forged, the fighting forged up for five days and nights, finally succeeded in switching the forging to steam forging and succeeded in making the output soar by four times.