我厂生产的Z424—1B型油压表中的关键零件—油缸的加工,最突出的矛盾是在挤压加工后,尺寸精度很难控制,多年来,一直是个难题。去年,我们对此工艺进行了理论上的分析和探讨,初步找到了油缸挤压后尺寸不稳定的因素,从而改进了工艺,收到了一定的效果。 I plant production Z424-1B-type hydraulic pressure gauge in the key parts - cylinder processing, the most prominent contradiction in the extrusion process, the dimensional accuracy is difficult to control, over the years, has been a problem. Last year, we conducted a theoretical analysis and discussion of this process. We initially found out the factors that affect the size of the cylinder after being squeezed so as to improve the process and achieve certain results.