塔式锅炉叠合式大板梁制作要点

The Main Production Points of the Horizontal Split Large Plate Girder for Tower Boiler

大型火电锅炉叠合式大板梁具有超长、超宽、超重的特点,其制作难点是拱度公差范围窄、上下梁同步起拱和叠合面组孔同心度控制等。论述了大板梁制作的工艺方法,在材料准备、下料、钻孔、装配、焊接、劲板装配、翻身等多个方面采取相应措施,保证大板梁的质量和安全。

Large horizontal split plate girder for a large thermal power boiler is super-long,super-wide and super-heavy,and its manufacturing difficulties are the narrow tolerance range of arch camber,synchronous arching of upper and lower plate girder,and concentricity of holes in the horizontal split surface.The manufacturing process of large plate girder is discussed,the corresponding measures are taken in the aspects of material preparation,blanking,drilling,assembly,welding,stiffener assembly,turning over and other aspects which ensure the quality and safety of the large plate girder.