我厂生产的糖业机械中,有一些(石千)体、顶盖等大型零件,要由板材下料后制成,我厂采用了合理套材的办法,节约了很多铜材。现举两个例子说明如下: (一)工件是斜锥盘,它的展开形状是一个大缺圆形(如图1),最大直径达6280公厘,最好的方法是将钢板裁成窄的扇面形,然后并焊成。钢板采用3200×1700×6的;在一张铜板上可作两种套材法,即图2和图3所示的两种套材法,钢板的利用率都是96％。但图2的方法,因裁出的块数较 I plant the sugar machinery, there are some (Shiqian) body, roof and other large parts, made of sheet metal material after the cut, I used a reasonable kit approach, saving a lot of copper. Here are two examples to illustrate the following: (a) the workpiece is oblique cone, its unfolded shape is a large lack of round (Figure 1), the maximum diameter of 6280 mm, the best way is to cut the steel sheet narrow The fan-shaped, and then welded into. The steel plate is 3200 × 1700 × 6; two kinds of sheathing method can be used on a copper plate, that is, two kinds of sheathing methods as shown in FIG. 2 and FIG. 3, the utilization rate of the steel plate is both 96%. However, the method of Figure 2, because of the number of cut out of the block