西安铁路局电务修配厂精铸45碳素钢线环钳子的试制任务,过去在外省市协作,因铸件表面光洁度达不到图纸设计要求而转我厂生产。钳子的钳口上下模两种铸件的R部位和球面,要求达到▽_5以上;而且尺寸精度要求也很高。钳子上下模零件图见图1、图2、铸件尺 Xi’an Railway Bureau electric repair plant casting 45 carbon steel wire ring pliers trial task, in the past in other provinces and cities collaborate, because the surface roughness of the casting drawings design requirements and transferred to our factory production. Pliers jaw up and down the two parts of the cast R parts and spherical, required to reach ▽ _5 above; and dimensional accuracy requirements are also high. Pliers up and down mold parts shown in Figure 1, Figure 2, casting ruler