研究低温下钢轨焊接、放散锁定,采用低温下闪光焊接机机械参数控制、焊接前焊轨接头加温、焊轨过程及焊轨后焊接头保温技术,并将其应用于施工中,形成焊轨接头局部小气候,利用移动保温棚、电热石棉网,有效地保证了低温下的焊接质量,采用大功率拉伸器,结合多点观测位移的方法,解决了单元轨节放散锁定轨温不均匀的问题。 The research of low-temperature rail welding, diffusion lock, the use of low temperature flash welding machine mechanical parameters control, welding before the welding joint heating, welding process and welding track after welding insulation technology, and its application in the construction, the formation of welding rail Joint local microclimate, the use of mobile insulation shed, electric asbestos nets, effectively ensuring the welding quality at low temperatures, the use of high-power tensile device, combined with multi-point observation of the displacement method to solve the unit track section of the release lock rail temperature is not uniform problem.