我们在有关车间的帮助下,在普通室温条件下,加工试制成功四根300毫米的研磨平尺,平直度达到0.3微米(图1)。现将工艺介绍如下: 1.锻:用φ150毫米圆棒料,在0.75吨汽锤上锻打成形。 2.退火:见退火温度曲线(图2)。 With the help of the workshop, we processed and successfully produced four 300 mm flat grinding rods at normal room temperature with a flatness of 0.3 μm (Figure 1). The process is as follows: 1. forging: with φ150 mm round bar, forged on the 0.75 tons of steam hammer forming. 2. Annealing: See the annealing temperature curve (Figure 2).