在现场,修复钢轨及道岔的外形及结构上各种损伤,焊补占重要地位。英国钢轨研究所近来推广了两项新技术,显著地降低了这项修复费用。第一项是焊药芯管状焊条电弧焊应用于修复轨面外形损伤,也包括岔心塑流坍塌及飞轮擦伤的钢轨。第二项是宽缝铝热焊法应用于受伤而需要切除的焊头。至今在英国铁路上,受伤焊头需 At the scene, repairing the shape and structure of the rail and turnout all kinds of damage, welding make up an important position. The recent introduction of two new technologies by the British Rail Institute has significantly reduced the cost of this repair. The first is welding flux core tubular arc welding used to repair the rail surface shape damage, including the collapse of plastic flow collapse and flywheel abrasion rail. The second is the wide seam aluminum welding method applied to the injured and need to remove the welding head. So far in the British Railways, injured welding head needs