冷拔棒材,不论是黑色或有色金属,都是一种最经济有效的成材,冷拔棒材最明显的优点,是表面光滑平直,断面尺寸精确,可以满足自动车床或流水生产线需要。在近代的冷拔设备中,双拖板连续拉拔机十分引入注目。它能把任意长度的坯料以直线运动不断拔制出成品。在国外,还配套成直线流程的联合生产机组(见图1),包括有坯料子矫、连续拉拔、立矫、平矫、定尺切断,抛光和收集等一步法的生产工艺。这种联合机组,具有效率高、占用场地少、劳 Cold drawn bar, whether black or nonferrous metal, is one of the most cost-effective and finished products. The most obvious advantage of cold drawn bar is the smooth and straight surface, the accurate cross section size, which can meet the needs of automatic lathe or assembly line. In the modern cold drawing equipment, double drag plate continuous drawing machine is very much attention. It can be any length of the billet continuous linear motion to pull the finished product. In foreign countries, it is also equipped with a series of production processes with linear processes (see Fig. 1). The production process includes one-step process of blank sub-straightening, continuous drawing, vertical straightening, leveling, length cutting, polishing and collecting. This combined unit, with high efficiency, occupy less space, labor