Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Medium-strength steel rail with high yield strength and production method thereof
The invention belongs to the field of steel rail production, and particularly relates to a medium-strength steel rail with high yield strength and a production method thereof. The moderate-strength steel rail with the high yield strength has the advantages that the yield strength is larger than or equal to 820 MPa, the tensile strength ranges from 1200 MPa to 1300 MPa, and the ductility is larger than or equal to 10%. According to the moderate-strength steel rail, under the condition that various alloy elements are not added, the high yield strength is obtained through online heat treatment process design, the contact fatigue damage occurrence probability in the passenger and freight mixed transportation line using process can be effectively reduced, the service performance of the steel rail can be effectively improved, the service life of the steel rail can be effectively prolonged, and the train running safety is improved; meanwhile, the medium-strength steel rail with the high yield strength is simple in production method and easy to operate, and large-scale application and popularization of the medium-strength steel rail in passenger and freight mixed transportation lines are facilitated.
本发明属于钢轨生产领域，具体涉及一种具有高屈服强度的中等强度钢轨及其生产方法。本发明所述具有高屈服强度的中等强度钢轨，其具有：屈服强度≥820MPa，抗拉强度为1200‑1300MPa，延伸率≥10％。本发明涉及的中等强度钢轨在不添加多种合金元素的情况下，通过在线热处理工艺设计获得了高屈服强度，能够有效降低在客货混运线路使用中的接触疲劳伤损出现几率，能够有效提升钢轨的服役性能和服役寿命，提高列车运行安全性，同时本专利提供的具有高屈服强度的中等强度钢轨生产方法简单、易操作，利于其在客货混运线路的大规模推广应用。
Medium-strength steel rail with high yield strength and production method thereof
The invention belongs to the field of steel rail production, and particularly relates to a medium-strength steel rail with high yield strength and a production method thereof. The moderate-strength steel rail with the high yield strength has the advantages that the yield strength is larger than or equal to 820 MPa, the tensile strength ranges from 1200 MPa to 1300 MPa, and the ductility is larger than or equal to 10%. According to the moderate-strength steel rail, under the condition that various alloy elements are not added, the high yield strength is obtained through online heat treatment process design, the contact fatigue damage occurrence probability in the passenger and freight mixed transportation line using process can be effectively reduced, the service performance of the steel rail can be effectively improved, the service life of the steel rail can be effectively prolonged, and the train running safety is improved; meanwhile, the medium-strength steel rail with the high yield strength is simple in production method and easy to operate, and large-scale application and popularization of the medium-strength steel rail in passenger and freight mixed transportation lines are facilitated.
本发明属于钢轨生产领域，具体涉及一种具有高屈服强度的中等强度钢轨及其生产方法。本发明所述具有高屈服强度的中等强度钢轨，其具有：屈服强度≥820MPa，抗拉强度为1200‑1300MPa，延伸率≥10％。本发明涉及的中等强度钢轨在不添加多种合金元素的情况下，通过在线热处理工艺设计获得了高屈服强度，能够有效降低在客货混运线路使用中的接触疲劳伤损出现几率，能够有效提升钢轨的服役性能和服役寿命，提高列车运行安全性，同时本专利提供的具有高屈服强度的中等强度钢轨生产方法简单、易操作，利于其在客货混运线路的大规模推广应用。
Medium-strength steel rail with high yield strength and production method thereof
一种具有高屈服强度的中等强度钢轨及其生产方法
LI RUOXI (Autor:in) / DENG YONG (Autor:in) / YANG DAWEI (Autor:in) / YUAN JUN (Autor:in)
25.10.2022
Patent
Elektronische Ressource
Chinesisch
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