八年来,我厂一直使用锻造方式生产双边支重轮,近两年采用了接近最后形状的复合分模锻造新工艺。一、工艺方案分析对比如图1所示,我厂采用原工艺锻造的双边支重轮,其毛坯外形和尺寸精度与按国外某厂标准生产的锻坯差距很大,轨面、窝面和内孔三部位成形差,材料利用率低,原材料多耗8kg,切削加工量大。(图中双点划线示出国外 In the past eight years, our factory has been using the forging method to produce the bilateral roller wheels. In the recent two years, we have adopted a new composite sub-forging process close to the final shape. First, the process of analysis and comparison As shown in Figure 1, I used the original plant forging bilateral roller, the rough shape and dimensional accuracy of a foreign plant standards produced by a large gap between the billet, rail surface, The three parts of the hole forming poor, low utilization of materials, raw materials consume more 8kg, cutting a large amount. (The two-dot chain line in the figure shows foreign countries