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美标道岔垫板厂介绍钢轨预热要?/h3>

发布时间 : 2017-01-18    
  道岔不管是在铁路运行中,还是在煤矿施工以及运输中,都发挥着重要的作用,同时也承受着巨大的压力,同时要受到各种环境因素的破坏,因此道岔在实际应用中,会发生破损、破裂等现象,因此美?a href="/supply/494.html" target="_blank">道岔垫板对于道岔来说具有重要意义。同时在焊接钢轨过程中,我们也要掌握其中的技术,下面美标道岔垫板厂家给大家介绍一下,如何控制焊接预热过程中的火焰温度?br />   调节火焰、钢轨预热。将液化气和氧气调压器上的压力完全释放掉(归零),再将预热器上的两个阀门完全打开。通过氧气和液化气的调压阀分别将液化气压力调节?.07MPa,氧气压力调节至0.49MPa。测量并记录轨温,用预热器加热钢轨。安装预热器支架并调整位置,使预热器处于砂模的中央,预热器离轨面的距离保持在48?5mm范围内?br />   在砂模外,快速打开预热器液化气阀门,点燃火焰并将其稍稍开大,慢慢打开预热器的氧气阀门,交替打开氧气液化气阀门,直至在预热器的喷嘴处获得一个大?2mm的蓝色焰心。将预热器迅速放在预先定位好的预热支架上,并将预热器在砂模中迅速居中定位,此时火焰从砂模两侧冒出,并且均匀对称?0kg/m钢轨的预热时间一般掌握在5min以上,具体以钢轨端头颜色发红为标准既不能预热不足,也不能预热过度?br />   将分流塞放在砂模边缘上进行加热,不间断地注视整个加热过程,确认预热足够后迅速撤走预热器,先关掉氧气阀门,再关掉液化气阀门。在预热临结束时,注意左右晃动预热器?s,以使轨底角加强预热?br />

  只有做好焊接的预热工作,后期在施工过程中,才能够符合生产的标准和要求,前期的预热工作也十分重要,因此希望美标道岔垫板厂家分享的预热工作要点,能够对您有所帮助。易思特铁路器材专业从事美标道岔垫板的生产销售,如果您想要了解更多产品信息,欢迎您来电咨询我?a href="http://1111587.cn" target="_blank">http://1111587.cn?

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