太原矿山机器厂研制的一种新型管棒材矫直机,于1979年末进行了样机试验。试验结果表明,这种矫直机具有效率高,精度好等优点,是一种采用综合矫直原理的新型管棒材矫直机。管棒经过轧制、焊接、冷却、热处理和运输之后,往往由于多种因素使其弯曲变形,对于管材还会产生椭圆度,以及非圆管材的扭曲。为了消除这些缺陷,轧材一般都要进行矫直。通过矫直使管棒材产生适量的弹塑性变形,从而消除原始变 A new type of tube bar straightener developed by Taiyuan Mine Machinery Factory was tested at the end of 1979. The test results show that this straightening machine has the advantages of high efficiency and good accuracy, and is a new type of tube bar straightening machine adopting the principle of comprehensive straightening. After the rod rolling, welding, cooling, heat treatment and transportation, often due to a variety of factors to make it bent, the pipe will produce ovality, and non-round pipe distortion. In order to eliminate these defects, rolled materials are generally straightened. By straightening the tube bar produce an appropriate amount of elastoplastic deformation, thereby eliminating the original change