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钢管的抗弯和抗扭能力较一般钢材大,是一种经济断面钢材。随着工业的发展,需要大量钢管,因此,电焊钢管生产技术有了飞跃发展,其中高频焊接钢管是发展电焊钢管生产的主要方向。在奋发图强、自力更生的精神鼓舞下,我们试制成功高频接触焊管和高频感应焊管,在生产实践中,效果显著,现简介于下。一、高频焊管原理高频焊管机由机械和电气两部分组成。机械部分包括带钢对焊机、展卷机、切边机、成型机、焊接机、定径机、锯断机等,组成钢管自动生产线。电气部分为一台高频发生器,图1为发生器的原理图,外电源输入经整流后,送入振荡管屏极,与槽路偶合产生高频振荡,由输出变压器将高频电能,通过接触块(或感应器)输送给管子,进行加热焊接。
Steel pipe bending and torsional capacity than the average steel, is an economical section of steel. With the development of industry, a large number of steel pipes are needed. Therefore, the production technology of electric arc welded steel pipes has been leapfrogged. Among them, high-frequency welded steel pipes are the main directions for the development of electric welded steel pipes. Inspired by our efforts and self-reliance, we have succeeded in trial production of high frequency contact welded pipe and high frequency induction welded pipe. In production practice, the effect is remarkable. First, the principle of high-frequency welded pipe High-frequency welded pipe machine by the mechanical and electrical two parts. Mechanical parts include strip butt welding machine, exhibition roll machine, trimming machine, molding machine, welding machine, sizing machine, sawing machine and so on, forming steel automatic production line. The electrical part is a high-frequency generator, Figure 1 is the schematic diagram of the generator, the external power input rectified, into the oscillating tube screen, coupled with the tank to produce high-frequency oscillation, the output transformer high-frequency power, Through the contact block (or sensor) delivered to the pipe, the heat welding.