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装生啤酒的铝桶,目前由7升桶Φ205mm逐渐向小型化转化,以1～3升桶为主。7升及3升的铝桶起初用拉深加工方法制造,为了小型化,降低成本,而采用薄壁化,为此就可能采用DI方法加工,並谋求确立这种制造技术。一、DI加工所谓DI加工是指落料→拉深→再次拉深→变薄拉深的一连串加工。冲裁及拉深是拉深冲压加工,再拉深和变薄拉深是体积加工,共两道工序。各道加工工序的工件形状变化如图1所示。体积加工的模具排列见图2所示。需耐内压力的容器,为了放置时稳定性好,可按图
Draft beer aluminum barrels, the current 7-barrels from Φ205mm gradually transformed into small, mainly to 1-3 barrels. The 7L and 3L aluminum casings were initially produced by deep drawing. In order to miniaturize and lower the cost, thinner aluminum casings are used, and the DI method may be used for this purpose, and this manufacturing technique is sought to be established. First, the DI processing The so-called DI processing refers to blanking → drawing → re-drawing → thinning a series of deep processing. Blanking and drawing is the drawing processing, drawing and then drawing is the volume of processing, a total of two processes. The shape of the workpiece in each channel is shown in Figure 1. Volume processing die arrangement shown in Figure 2. To withstand the pressure of the container, in order to place the good stability, according to the map