直缝焊管的管坯成型质量对焊接性能及其成品管的性能有很大影响。本文以立辊和精成型辊为重点,谈谈各种成型条件(辊型,尺寸等)对成型质量的影响。试验方法和试验条件试验装置如图1所示,其机架宽为300毫米。平板借助入口箱形导卫装置,送进粗成型辊 BR1、BR2、BR3形成半圆形。然后,再经过 BR3、立辊 SR1、SR2和精成型辊 FR1 Longitudinal welded pipe tube forming quality of the welding performance and finished tube performance have a significant impact. In this paper, the vertical roller and finishing roller as the focus, talk about a variety of molding conditions (roller type, size, etc.) on the molding quality. Test methods and test conditions Test device shown in Figure 1, the rack width of 300 mm. The flat plate is fed into the rough forming rollers BR1, BR2, BR3 by means of an inlet box-shaped guide guard, forming a semicircle. Then through BR3, upright rolls SR1, SR2 and finishing roll FR1