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扩张形毛边槽是八十年代出现的一种新型毛边槽,它与常规毛边槽相比,有提高锻模毛边槽部分的寿命和降低变形力的优点。几年来,我厂在模锻回转体锻件时一直是应用图1所示的常规毛边槽,下模分模面的圆角处很容易磨损,给剪边造成了一定的困难。有时因磨损严重,在剪切过程中,沿锻件毛边周围出现撕裂现象(冷剪),甚至使锻件产生变形。扩张毛边槽见图2,即上模毛边槽桥部制成个斜角(取a为10°),这样,在模
Expansion-shaped flash tank is a new type of flash tank appeared in the eighties. Compared with the conventional flash tank, it has the advantage of improving the service life and reducing the deformation force of the burr tank part. Over the past few years, I plant forging swivel forgings has been applied as shown in Figure 1 the conventional flash tank, the lower mold parting surface of the fillet Department is easy to wear, to the edge caused some difficulties. Sometimes due to severe wear and tear, the phenomenon of tearing (cold shear) occurs along the burr edge of the forging during shearing, and even the forging is deformed. Expansion flash slot see Figure 2, the upper mold burr bridge made of a bevel (take a is 10 °), so that in the mold