Abstract: Thanks to rapid development of pipeline automatic welding technology, the requirements on pipe-end facing is higher and higher for welding technique. The groove form and precision are the key factors to influence welding quality. Pipe-end facing machines of PFM series have such advantages as precise positioning and coring, high cutting force, quick in cutting speed and high precision. The series can process various grooves, such as V type, U type, X type and composite types. The tracing profile mechanism on the rotating cutterhead can keep the processed bevel shape in line with the requirements. The throttle automatic control system can allow the processing speed and idle to interchange. With operational convenience and other advantages, this series fully satisfies the engineering demand and has become the indispensible key equipment for pipeline welding. Localization of pipe-end facing machine of the PFM series has broken foreign technological blockage and price monopoly, satisfied the demand for bevel form and precision in the pipe-end automatic welding technological sector, and effectively improved the technological level and economic results of China's pipeline construction.

Key words: petroleum, natural gas, pipeline, automatic welding, facing machine, PFM series

摘要： 随着管道自动焊接技术的快速发展,焊接工艺对管端坡口的要求愈来愈高。坡口形式及精度已经成为影响焊缝质量的关键因素。PFM系列管端坡口整形机具有定位取心准确,切削力大,切削速度快,精度高,可加工V型、U型、X型及各种复合型坡口,旋转刀盘上的跟踪仿形机构可确保加工坡口的形状、尺寸均匀一致,液压系统油门自动调节可实现加工速度与怠速互换,操作方便等诸多优点,完全满足工程需求,已成为管道全位置自动焊接不可或缺的关键设备。PFM系列管端坡口整形机的国产化,打破了国外同类产品的技术封锁和价格垄断,满足了自动焊接技术对管端坡口形式及精度的需求,有效提高了我国管道施工的技术水平及经济效益。

关键词: 石油, 天然气, 管道, 自动焊, 坡口机, PFM系列