在我厂生产的50米～3/时制氧机设备中,有三种无缝钢管(10钢)弯成的螺旋(右旋)式冷却器(图1)。过去只有一台简陋的弯管机,产品质量差,生产效率低,劳动强度大。为了满足产品批量不断增加的需要,我厂于一九七四年自行设计制造了一台专用的卧式螺旋弯管机(图2)。几年的使用效果证明,能满足生产要求。主要技术参数 1.钢管最大弯曲半径R=450毫米 2.最大弯曲半径时的钢管直径及壁厚为89×4毫米 Among the 50m ~ 3 / h oxygen plant equipment produced by our factory, there are three kinds of spiral (right-handed) coolers made of seamless steel pipe (10 steel) (Figure 1). In the past there was only a simple pipe bender, poor product quality, low productivity, labor-intensive. In order to meet the increasing demand for product batch, our factory designed and manufactured a dedicated horizontal spiral pipe bender in 1974 (Figure 2). Years of use proved that to meet production requirements. The main technical parameters 1. Tube bending radius R = 450 mm 2. The maximum bending radius of the pipe diameter and wall thickness of 89 × 4 mm