我厂为生产远红外烘烤食品炉,急需用大量的(?)24×1毫米的薄钢管,由于此管子货源缺乏,故将库存积压的4～5吨(?)23×1毫米的管子(材料为 A3、20钢)用(?)22毫米的钢球和辅助模具,在25吨液压机上冷挤成所要求的尺寸,目前已大批投入使用。零件尺寸及模具见图1、图2。 I plant for the production of far-infrared baking food furnace, the urgent need to use a large number of (?) 24 × 1 mm thin steel pipe, due to the lack of supply of the pipe, it will inventory backlog of 4 to 5 tons (?) 23 × 1 mm pipe (Made of A3, 20 steel) with (?) 22 mm steel ball and auxiliary mold, 25 tons of hydraulic machine cold extrusion to the required size, has been put into operation in large quantities. Part size and mold shown in Figure 1, Figure 2.