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发明公开
CN105734244A 一种钢轨道岔尖轨跟端过渡段表面硬度处理方法 无效 - 驳回

一种钢轨道岔尖轨跟端过渡段表面硬度处理方法
摘要：
本发明提供一种应用于钢轨生产加工技术领域的道岔尖轨跟端过渡段表面硬度处理方法，所述的钢轨跟端(1)的过渡段表面(2)硬度处理方法的处理步骤为：1)将加工钢轨跟端(1)的钢轨跟端原材加热至1050℃—1250℃的温度区间；2)对加热后的钢轨跟端原材进行风冷淬火处理，风冷淬火的风压为0.20Mpa—0.35Mpa之间，风冷淬火处理到400℃—450℃之间后，进行自然冷却；3)钢轨跟端原材进行自然冷却后，加工形成钢轨跟端(1)，本发明所述的处理方法，工艺简单，能够有效提高道岔尖轨跟端的过渡段表面的硬度，在使用中不会再出现车轮通过时在钢轨上产生磨损的凹坑，不需要频繁更换道岔尖轨，降低了生产成本和钢轨维护成本。
摘要（英）：

The invention provides a transition section surface hardness treatment method of a turnout tongue rail end of a steel rail applied to the technical field of production of steel rails. The transition section surface (2) hardness treatment method of a rail end (1) comprises the following treatment steps: 1) a rail end raw material for machining the rail end (1) is heated to a temperature section of 1050-1250 DEG C; 2) the air-blast quenching treatment is performed for the heated rail end raw material; the wind pressure of air-blast quenching is 0.20-0.35 Mpa; and the natural cooling is performed after the air-blast quenching treatment is performed to reach 400-450 DEG C; and 3) the rail end raw material is naturally cooled to form the rail end (1). The treatment method is simple in process, can effectively increase the transition section surface hardness of the turnout tongue rail end, cannot generate worn pits caused by wheels passing through the steel rail in use, needs no frequent replacement of a turnout tongue rail, and reduces the production cost and the maintenance cost of the steel rail.

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