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长线台座生产预应力圆孔板时,一盘冷拨丝中总有数根不够长线台座长度或张拉时断裂的纲丝。为了节约钢材,要把长度不够的钢丝进行绑扎或打结,但结头处总是大于端头板梳筋槽,采用简易拉模生产的构件厂,由于模具重量较轻,通过前端头板时用人工把模框抬起即可,而采用芯管内振拉模或外振拉模的构件厂,由于模具重量大,无法把模具抬起,只
When a long-term pedestal produces pre-stressed circular orifices, there are always a few wires in a cold-picked wire that are not long enough for the length of the pedestal or broken when tensioned. In order to save steel materials, the length of steel wire must be tied or knotted, but the knot end is always larger than the comb groove of the head plate, and the component factory produced by simple drawing die is lighter in weight and passes through the front head plate. It is only necessary to lift the mold frame manually, and the component factory using the internal vibration pull mold or external vibration pull mold can not lift the mold due to the heavy mold weight.