概述为解决大型钢管弯曲加工问题,我厂在1969年先后试制成功了两台不同类型的大型中频弯管机,最大弯管直径可达φ325毫米,解决了我厂船舶管系大型管件加工的技术关键问题。中频弯管的基本原理,是利用中频电流产生的交变电磁场,来加热管子,被加热的加热带很狭窄,而加热带两旁处于冷态,因此,当外界给予管子一个弯曲力矩时,管子就发生弯曲变形。这一弯管方法的优点是,可以节省大量的 Overview In order to solve the problem of large-scale steel pipe bending, I plant in succession in 1969, two different types of large-scale IF pipe bending machine, the largest pipe diameter up to φ325 mm, to solve our factory ship pipe large tube processing technology The key issue. The basic principle of the middle frequency elbow is to use the alternating electromagnetic field generated by the intermediate frequency current to heat the pipe. The heated heating band is very narrow, while the heating band is cold on both sides. Therefore, when the outside world gives the pipe a bending moment, Bending deformation occurred. The advantage of this pipe bending method is that it can save a lot of money