道岔与无缝线路焊接后，随着轨温的变化，长钢轨纵向温度力将直接作用于道岔的撤叉和转撤部分。
When a turnout is connected with CWR through welded joints, the longitudinal rail temperature force ACTS directly on the frog and the switch section along with the variation of rail temperature.
结果表明：钢轨焊接所需顶锻力随顶锻量、顶锻速度的增加而增大，随焊口温度的降低而升高。
The results show that the upset force increases with the increasing of the upset length and upset speed, and increases with the reducing of the heating temperature.
论述了自行研制的钢轨全断面有效温度测试仪的原理及结构。
The principle and structure of the self made testing instrument for measuring the effective temperature in the full cross section of steel rail are described and discussed in this paper.
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