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我厂加工弯管部件(图1),原用灌砂热煨法。后来设计了简易成形弯管模(图2),效果良好。现介绍如下。工作原理将管件沿导向轮插入两模之间,开动压力机,由递送芯棒把管件徐徐压入圆形曲槽,管件全部进入槽内后,提起压力机头,芯棒退出。安放第二根管件,连续操作,前面的管件被后而的管件顶出模外,自动脱落,得到180°弯管。注意事项 1.因管件弯曲半径小、管壁薄,弯曲成形后回弹力较大,故成形模曲率半径应适当缩小6～8毫米,以克服回弹。
I plant processing pipe fittings (Figure 1), the original sand burning hot simmer. Later, the design of simple forming elbow mold (Figure 2), the effect is good. Now introduced as follows. Working principle Insert the tube along the guide wheel between the two molds, start the press, the delivery mandrel to the tube slowly into the round groove, the tube into the tank all, lift the pressure head, mandrel exit. Place the second tube, continuous operation, the front of the tube after the top of the tube out of the mold, automatically fall off, get 180 ° elbow. Matters needing attention 1 because the tube bending radius is small, the thin wall, bending the greater the resilience after forming, so the forming mold radius of curvature should be reduced by 6 to 8 mm, to overcome the rebound.