The weldment change bit mechanical The wind tower cylinder girth assembly and Welding Material process, in order to ensure the high quality of the assembly and welding, and improve work efficiency, the use of large weldments displacement machinery mainly include a variety of general and special roller frame and large head-to-tail frame tipper. Wind tower cylinder paired set of welding wheel frame By the barrel wind tower production process, usually first paired set of welded tube section, and then sent to take a long production line, section by section group welding to the required length. Due to the The wind towers cylinder 3 ° taper, and the diameter of each section Flashlight, so the Tong Shen girth on the more difficult. Special assembly to achieve the tapered Flashlight rapid assembly, and to ensure the quality of the group, has successfully developed and assembly of stereotypes production dedicated to the tube section pairs roller frame, the shape of the roller frame structure by a pair of active roller passive wheel and four individually adjustable roller, mounted on a common chassis. Both sides of the chassis equipped with wheels, can be moved along the track (electric or manual). The wind towers cylinder production line take a long roller frame Welding Assembly
The total height of the land-based wind tower up to 100m, segment length of 12 ~~ 22m, the sea-based wind tower a total height of 120m, the segment length is 40m. Therefore, wind towers to take a long cylinder is one of the most critical processes. Are assembled in pairs Flashlight must be precise to ensure a uniform seam gap. Barrel then wind tower the long girth assembly and welding quality, usually using a combination of roller stand, CD / CI general welding roller stand the FIR type heavy-duty the assembly wheel frame and FIT hydraulic increase passive roller frame.
Force is complex and not qualitative a great wind tower structure, the main weld (wind towers cylinder longitudinal, vertical circular seam the flange ring sewn) performance must be the same as the base metal. That the tensile strength of the Welding Assembly and -40 ° C low temperature notched impact value shall not be less than the lowest value of the standard requirements of the base metal. -10 â„ƒ CTOD values ??must also meet the requirements of the corresponding manufacturing regulations. The strength and notched impact toughness of welded joints depends on many factors, mainly including Welding Material, welding processes, welding heat input, preheat temperature, the highest level between temperature and post-weld heat treatment. Therefore, for the wind towers master cylinder weld before welding production EN288-3 standard welding procedure qualification, to verify whether the performance of welded joints to meet the requirements.