冷拔丝预应力破构件的生产，主要采用长线台座法和短线法。长线法的应用广泛一些。它是在长线台座上张拉预应力钢丝，并临时锚定．然后浇筑检，待砼达到一定强度后将钢丝剪断，最后脱模堆放。在生产过程中，施加的张拉应力，由于受操作方法、钱夹具、环境温度、台座及张拉机具 The production of cold-drawing prestressed components mainly adopts the long-wire pedestal method and the short-term method. The long-line method is widely used. It is to stretch prestressed steel wire on a long-term pedestal and temporarily anchor it. Then, after pouring, the steel wire is cut and the wire is cut and stacked. In the production process, tensile stress is applied due to the operating method, money clamp, ambient temperature, pedestal and tensioning equipment