中频弯管特性及弯管壁厚计算

• 作 者: 方英鹤
• 机 构: 东北电力设计院
• 出 处: 吉林电力技术
• 发表日期: 1988年01期
• 关键词: 弯管 弯制 冷却介质 局部加热 椭圆度 回弹量 弯曲角 减薄量 汽水管道设计 辊式

一、概述所谓中频弯管,是指在弯管机内,管子以一定速度通过感应圈,在中频电流作用下钢管快速局部加热到完全塑性状态,经过弯曲后又喷入冷却介质使它快速冷却,以保持弯曲后的形状直到弯管终止。由于中频弯管是由一个个微段逐步弯制的,所以外观质量很好,椭圆度,壁厚

First, an overview of the so-called IF elbow, is in the pipe bending machine, the pipe to a certain speed through the induction coil, the role of IF current under rapid partial heating of the steel tube to a fully plastic state, after bending and then injected into the cooling medium so that it quickly cooling , To keep the bent shape until the elbows terminate. As the MF elbow is a gradual bending of a micro-segment, so the appearance of good quality, ovality, wall thickness