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目前生产水泥门窗框所用的模具较落后。一般浇捣一种规格的门框或窗框,必须相应制作一套固定式的内、外模具,一模一用,毫无互换性。我国目前所设计、应用的门窗框品种繁多、规格复杂,因此制作门窗框钢模投资大,修理费用多,耗钢量多,收益甚少,不能适应发展的需要。我厂经过反复实践和计算,终于找出11种模数的标准块,这样就可迅速拼装成标准图集上任意一
The molds currently used in the production of cement door and window frames are relatively backward. Generally, one type of door frame or window frame must be cast, and a set of fixed inner and outer molds must be made accordingly. China has currently designed and applied a wide variety of door and window frames, and its specifications are complex. Therefore, the production of steel frames for door and window frames requires large investment, high repair costs, and a large amount of steel consumption with little revenue, and cannot meet the needs of development. After repeated practice and calculations, our factory has finally found 11 modular blocks, so that it can be quickly assembled into any of the standard atlases.