摘要:
The invention provides a method of cooling a rail weld zone. The method includes a first rail web portion cooling process of cooling a rail web portion cooling region of the rail weld zone in a part of a temperature range until the completion of transformation from austenite to pearlite, a second rail web portion cooling process of cooling the rail web portion cooling region after the entire rail web portion of the rail weld zone is transformed to pearlite, a foot portion cooling process of cooling a foot portion of the rail weld zone, and a head portion cooling process of cooling a head portion of the rail weld zone. When cooling time of the first and second rail web portion cooling processes is t minute, a k value satisfies an expression represented as -0.1t+0.63≤k≤-0.1t+2.33.
摘要翻译:本发明提供了一种冷却钢轨焊接区的方法。 该方法包括将第一轨道腹板部分冷却冷却钢轨腹板部分冷却钢轨焊接区的区域中的温度范围内的一部分,直到转化完成从奥氏体到珠光体的过程中,第二柱部冷却冷却的过程 柱部的钢轨焊接区的整个钢轨腹板部分后的冷却区域被变换为珠光体,冷却钢轨焊接区的一个底脚部分的一个底脚部分冷却过程中,和冷却的头部的头部冷却过程 钢轨焊接区。 当冷却所述第一和第二柱部的冷却过程的时间为t分钟,代表作为-0.1t表达的k值为SATIS外资企业+ 0.63‰¤k‰¤-0.1 T + 2.33。