• Adhesive wear and surface - fatigue wear are the two major wear forms in rail steel.

    粘附磨损疲劳磨损主要磨损形式

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  • A new submerged entry nozzle (SEN) with four outlets was used for casting heavy rail steel.

    针对攀钢大方连铸结晶器,采用孔水口浇注重钢。

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  • The rigidity's evolvement of the two kinds of PD3 rail steel at different stage of life is analyzed.

    分析PD3钢轨固定荷载循环条件下不同寿命阶段试样理论应力最大处维氏硬度演化

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  • Quenching is one of the leading technologies that improves the strength and toughness of rail steel.

    钢轨全长淬火使钢轨强韧主要途径之一

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  • The production status of rail steel and smelting technology of heavy-rail steel in China are summarized.

    本文对我国钢轨生产情况及重钢的冶炼技术做了综合论述。

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  • 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链状硫化锰夹杂物

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  • The wear rate of rail steel increases linearly with the hardness of the corresponding wheel steel rising.

    钢轨材料磨损对应车轮硬度增加而增加,且近似呈线性关系

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  • 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U 74进行相变硬化

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  • 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连铸热送热装工艺生产钢轨组织变化所能达到的各项性能指标

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  • The main characteristics of the rail steel are low manganese and high carbon which content is being closed to eutectoid.

    成分特征含量共析点左右钢轨

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  • The pearlitic rail steel was widely used as rail track in China for its prominent performance in anti-wearing and high yield strength.

    珠光体轨道目前我国铁路轨道采用的主要钢种,性能特点是抗磨损性能好,屈服强度

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  • The effect of specimen type, thickness, dimension ratio, and notch sharpness on fracture toughness of a carbon rail steel was examined.

    研究试样类型、试样厚度比例试样尺寸切口度等因素断裂韧性影响

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  • Heat treatment can increase the tensile strength and the hardness of the rail steel, and the contact fatigue strength is also increased.

    通过热处理提高强度硬度接触疲劳强度随之提高

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  • Research purposes: at a low temperature, the mechanical properties of rail steel get worse and brittle (failures) can happen more easily.

    研究目的钢轨钢材低温力学性能差,容易发生脆性破坏,直接威胁着铁路运输安全。

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  • The hydrogen content in the molten heavy rail steel was measured in every stages from LD tapping to mould(without the VD refining process).

    研究了包钢转炉出钢结晶各个工序过程(未经VD真空处理)钢液含量变化。

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  • 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.

    根据包钢冶炼条件采用VD真空处理降低钢液含量是完全必要的。

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  • 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.

    从而现有U74制定淬火工艺参数提供理论指导,以提高淬火质量

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  • 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生产性能预报模型,并通过模型结构优化提高了模型预报可靠性。

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  • 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.

    稀土加入0.01%时,奥氏体晶粒尺寸明显细化冲击显著改善。

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  • 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.

    腐蚀性能同强度韧性一样事关铁路运营效益和安全等重大问题

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  • 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.

    简述攀钢大方连铸结晶器电磁搅拌技术冷控制技术凝固末端动态下技术连铸中的应用效果。

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  • 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.

    简述攀钢大方连铸结晶器电磁搅拌技术冷控制技术凝固末端动态下技术连铸中的应用效果。

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  • 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.

    采用过渡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锰钢辙叉钢轨双过渡层对接试验

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  • 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.

    在经过腐蚀钢轨拉伸断口进行显微组织断口形貌同步观察直接观察到了断日形貌特征显微组织的某些相关结果。

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  • 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二次冷却控制系统保证了连铸坯内部质量力学性能,满足攀钢后续产品使用铸坯要求。

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  • 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.

    介绍了钢轨溶解析出分布情况分析了钒钢轨钢组织结构钢轨钢性能影响

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  • 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.

    高速冶炼可以LF精炼过程采用较高炉渣碱度RH精炼过程中,应适当降低炉渣碱度减少精炼时间

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  • A bloom continuous Casting machine main cast quality steel and alloy steel, such as heavy rail steel, hard-line steel, spring steel, bearing steel, alloy structural steel, and other key species.

    大方连铸机主要浇铸优质合金钢钢、硬线钢、弹簧钢轴承钢、合金结构钢重点品种。

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  • A bloom continuous Casting machine main cast quality steel and alloy steel, such as heavy rail steel, hard-line steel, spring steel, bearing steel, alloy structural steel, and other key species.

    大方连铸机主要浇铸优质合金钢钢、硬线钢、弹簧钢轴承钢、合金结构钢重点品种。

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