The significance of stress corrosion test for rail steel is demonstrated.
本文首先阐述了研究轨钢应力腐蚀的意义。
Adhesive wear and surface - fatigue wear are the two major wear forms in rail steel.
粘附磨损和疲劳磨损是轨钢的主要磨损形式。
A new submerged entry nozzle (SEN) with four outlets was used for casting heavy rail steel.
针对攀钢大方坯连铸结晶器，采用四孔水口浇注重轨钢。
The rigidity's evolvement of the two kinds of PD3 rail steel at different stage of life is analyzed.
分析了两种PD3钢轨钢在固定荷载循环条件下不同寿命阶段试样理论应力最大处的维氏硬度的演化。
Quenching is one of the leading technologies that improves the strength and toughness of rail steel.
钢轨全长淬火是使钢轨强韧化的主要途径之一。
The production status of rail steel and smelting technology of heavy-rail steel in China are summarized.
本文对我国钢轨钢的生产情况及重轨钢的冶炼技术做了综合论述。
There are some amount of the chain sulphide inclusion in the microstructure of the rail steel frequently.
钢轨钢中常含有数量较多的条链状硫化锰夹杂物。
The wear rate of rail steel increases linearly with the hardness of the corresponding wheel steel rising.
钢轨材料的磨损率随对应车轮硬度的增加而增加，且近似呈线性关系。
Laser transformation hardening was carried out on U74 rail steel by a self-developed high power diode laser.
使用自制的大功率半导体激光器对U 74轨钢进行了相变硬化。
This paper introduces the change of microstructure and properties of the rolled rail steel of CC bloom in hot charging.
文章主要介绍了采用钢轨钢连铸坯热送热装工艺生产钢轨组织的变化和所能达到的各项性能指标。
The main characteristics of the rail steel are low manganese and high carbon which content is being closed to eutectoid.
其成分特征是碳含量在共析点左右的高碳低锰钢轨钢。
The pearlitic rail steel was widely used as rail track in China for its prominent performance in anti-wearing and high yield strength.
珠光体轨道钢是目前我国铁路轨道采用的主要钢种，其性能特点是抗磨损性能好，屈服强度高。
The effect of specimen type, thickness, dimension ratio, and notch sharpness on fracture toughness of a carbon rail steel was examined.
研究了试样类型、试样厚度、比例试样尺寸及切口尖度等因素对普碳轨钢断裂韧性的影响。
Heat treatment can increase the tensile strength and the hardness of the rail steel, and the contact fatigue strength is also increased.
通过热处理可提高轨钢的强度及硬度，接触疲劳强度也随之提高。
Research purposes: at a low temperature, the mechanical properties of rail steel get worse and brittle (failures) can happen more easily.
研究目的：钢轨钢材在低温下力学性能变差，容易发生脆性破坏，这直接威胁着铁路运输的安全。
The hydrogen content in the molten heavy rail steel was measured in every stages from LD tapping to mould(without the VD refining process).
研究了包钢重轨钢从转炉出钢到结晶器各个工序过程（未经VD真空处理）钢液中氢含量变化。
According to smelting condition of Baotou iron and steel group, VD refining process should be adopted to reduce the hydrogen content in the heavy rail steel.
根据包钢重轨钢的冶炼条件，采用VD真空处理降低钢液中氢含量是完全必要的。
The test results offered a theoretical basis for determining the heat treating technic parameters of U74 rail steel, and the quenching quality can be improved.
从而为现有U74轨钢制定淬火工艺参数提供理论指导，以提高其淬火质量。
A mathematic model to predict the mechanical properties of heavy rail steel has been developed by means of neural network according to the demand of production.
采用神经网络方法建立了重轨生产性能预报模型，并通过模型结构优化提高了模型预报的可靠性。
When the content of RE addition is 0.01%, the grain size of austenite can be obviously fined, and the impacting toughness of heavy rail steel can be obviously improved.
当稀土加入量为0.01%时，重轨钢的奥氏体晶粒尺寸明显细化，冲击韧度显著改善。
The corrosion resistance of the heavy rail steel as well as the strength and toughness, is a matter of major issues concerning railway operation efficiency and security.
重轨钢的耐腐蚀性能同其强度和韧性一样，事关铁路运营效益和安全等重大问题。
The key technologies, such as M-EMS, secondary cooling scheme, dynamic soft reduction, and its application to bloom continuous casting for heavy rail steel were presented.
简述了攀钢大方坯连铸结晶器电磁搅拌技术、二冷控制技术和凝固末端动态轻压下技术在重轨钢连铸中的应用效果。
The key technologies, such as M-EMS, secondary cooling scheme, and dynamic soft reduction, and its application to bloom continuous casting for heavy rail steel were presented.
简述了攀钢大方坯连铸结晶器电磁搅拌技术、二冷控制技术和凝固末端动态轻压下技术在重轨钢连铸中的应用效果。
By two double-mediate layer method, using developed welding materials and technology of forced arc molding, butt joining tests of high manganese steel with rail steel are completed.
采用两种过渡层方法，使用研制的过渡层焊接材料，结合强制成形电弧焊工艺进行了高锰钢辙叉与钢轨双过渡层对接焊试验。
The microstructure and fracture morphology of directly etched fracture sample of rail steel were observed. The relatinos between the microstructure and fracture morphology were discussed.
在经过腐蚀的钢轨钢拉伸断口上进行了显微组织和断口形貌的同步观察，直接观察到了断日形貌特征与显微组织的某些相关结果。
The secondary cooling control scheme suitable for rail steel ensures the billet internal quality and mechanical properties, and meets the requirements of follow-on products using billets.
满足攀钢钢种连铸工艺要求的二次冷却控制系统，保证了连铸坯内部质量和力学性能，满足攀钢后续产品使用铸坯的要求。
The dissolution, precipitation and distribution of vanadium in rail steel are introduced in this paper, effect of vanadium on the microstructure and properties of rail steel is also analyze.
介绍了钒在钢轨钢中溶解、析出、分布情况，分析了钒对钢轨钢组织结构及对钢轨钢性能的影响。
During the high rate heavy rail steel smelting, the upper basicity slag can be used during the LF refining, but it reduces suitable basicity of slag and refining time during the RH refining.
高速重轨钢的冶炼可以在LF精炼过程中采用较高的炉渣碱度，而在RH精炼过程中，应适当降低炉渣碱度和减少精炼时间。
During the high rate heavy rail steel smelting, the upper basicity slag can be used during the LF refining, but it reduces suitable basicity of slag and refining time during the RH refining.
高速重轨钢的冶炼可以在LF精炼过程中采用较高的炉渣碱度，而在RH精炼过程中，应适当降低炉渣碱度和减少精炼时间。
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