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MOBILE FLASH-BUTT WELDING METHOD FOR 60KG/M R260 HOT-ROLLED RAIL
MOBILE FLASH-BUTT WELDING METHOD FOR 60KG/M R260 HOT-ROLLED RAIL
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机译：60kg / m R260热轧钢轨移动闪光焊接方法
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#$%^&*AU2019208227A120200213.pdf#####Abstract The invention discloses a mobile flash-butt welding method for 60kg/m R260 hot-rolled rail, comprising a pre-flash stage, a flash stage, an boost stage, an upset stage and a forge stage; the total welding heat input is 3.0-4.8MJ, the total welding duration is 110-135s, and the welding upset allowance is 12.4-16.7 mm. The invention can improve the rail welding quality by controlling the total welding heat input, the total welding duration and the upset allowance in the mobile flash-butt welding process, as well as controlling the welding heat input and duration of each stage. According to the invention, the 60kg/m R260 hot-rolled rail can be successfully subjected to mobile flash-butt welding. As a result, the total width of the heat affected zone of the mobile flash-butt welding joint of whole 60kg/m R260 hot-rolled rail can be controlled within 32mm, and the difference between the maximum and the minimum value thereof is not more than 8.2mm, so as to reduce internal defects of the rail joint and ensure stable welding quality.1/3 Fig. 1 Fig. 2
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机译：＃$％^＆* AU2019208227A120200213.pdf #####抽象本发明公开了一种用于60kg / m 2 R260热轧钢轨的移动式对接焊接方法，包括预闪阶段，闪阶段，升压阶段、,陷阶段和锻造阶段;总数焊接热量输入为3.0-4.8MJ，总焊接时间为110-135s，焊接不正常余量为12.4-16.7毫米。本发明通过控制焊缝质量可以提高钢轨焊接质量。移动式对接中的总焊接热量输入，总焊接持续时间和加厚量焊接过程，以及控制焊接热输入和每个阶段的持续时间。根据根据本发明，60kg / m 2的R260热轧钢轨可以成功承受移动式对接焊接。结果，活动对接焊缝的热影响区的总宽度60kg / m的R260热轧钢轨的最大宽度可控制在32mm以内其最大值和最小值不大于8.2mm，以减少内部导轨接头缺陷，确保稳定的焊接质量。1/3图。1图2
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