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。
He points out that both Hong Kong and Zurich have managed to make a success of their rail systems, heavy and light respectively, though there are few cities in the world as hilly.
他指出，尽管世界上很少有城市像香港和苏黎世那样多山，但香港和苏黎世都成功地建设了各自的轻铁和重铁系统。
That has allowed coal mines and shippers to switch to cheaper rail transport from costly trucks for heavy cargos.
煤矿和其他货主在运输重型货物时，可以选择比比以往高成本的公路运输更便宜的铁路运输方式。
The team compared the lifecycle emissions of high-speed electric rail with transport by car, by heavy rail (the Amtrak diesel system) and by air.
研究小组将高速列车同汽车，火车（美国的全国铁路乘客公司的柴油机车）以及飞机的排放周期进行了比较。
The equivalent figures for passenger kilometres are 75% by automobile, 24% by air and 1% by heavy rail.
而乘客旅行里程数的等效数据是：汽车：75%，飞机：24%，火车：1%。
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。
This paper mainly analyzes the process of bloom casting for heavy rail and internal cracks like central crack and so on in order to solve the internal quality problems.
对方坯重轨钢系列铸坯内部产生的中间裂、中心裂等缺陷进行工艺探索研究，以解决生产过程中出现的内部质量问题。
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。
Emergent events in urban rail transit threaten the safety and order of the network. Heavy events will result in operation interruption, serious train delay and also passenger delay.
突发事件威胁城市轨道交通网络的安全与秩序，严重的将导致运营中断和列车与乘客的大规模延误。
The technology and equipment of rolling heavy rail by using continuous casting billet were introduced. The quality and mechanical performance of heavy rail were introduced too.
简要介绍了包钢钢联轨梁轧钢厂连铸坯轧制重轨的工艺、设备，以及重轨产品的质量和力学性能。
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。
It is also found that the spall and fine cleft are due to local melting of heavy rail tread.
缺损和小裂口则是因重轨踏面局部熔融所造成的。
Automatic detection of heavy rail surface defects, has long been expected to solve the problem.
重轨表面缺陷的自动检测，长期以来一直是期待解决的问题。
Heavy haul and high speed railways require high strength, tough rail heat treated rails.
简述了重载、速铁路运输需要高强韧性钢轨——全长热处理钢轨的必要性。
It is on this basis, the paper proposes a surface defects detection system of thermal heavy rail based on machine vision.
正是在此基础上，本文提出了基于机器视觉的热态重轨表面缺陷检测系统。
Especially the online detection of the thermal heavy rail is the focus of attention.
尤其是热态重轨的在线检测更是关注的焦点。
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.
大方坯连铸机主要浇铸优质钢和合金钢，如重轨钢、硬线钢、弹簧钢、轴承钢、合金结构钢等重点品种。
The universal finish pass is the best method of rolling high precision heavy rail.
结果表明，轧制高精度重轨的最好方法是使用全万能成品孔。
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。
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。
Normal service life of U74 heavy rail and service life of the damaged rail are estimated by fracture dynamical analysis and possible mechanism on the longitudinal crack on the rail discussed.
通过断裂力学分析，估算出u 74重轨的正常使用寿命及伤轨残余使用寿命；探讨了钢轨纵裂的可能机制。
Via vacuum induction furnace and metallographical analysis, the effects of RE on the grain size of the austenite and distance of the pearlite laminae of high-carbon steel for heavy rail were studied.
通过真空感应炉模拟实验，结合金相分析，研究稀土对于高碳重轨钢奥氏体晶粒尺寸和珠光体片层间距等的影响作用。
The finite element method (FEM) model was established to predict the temperature field, shell growth and solid fraction of the heavy rail bloom caster.
采用有限元方法，对某钢厂的重轨钢大方坯连铸机的凝固过程温度场分布情况、坯壳生长规律和凝固率进行了模拟研究。
The theoretical prediction values of the surface temperature of heavy rail, the straightening temperature and corresponding cooling time are in reasonable agreement with experimental results.
重轨表面温度、矫前温度及相对应的冷却时间计算值与实测结果基本相符。
This paper introduces the general arrangement, main technical parameters, diesel engine, transmission system, car body, braking system and running gear of GCD-470 heavy rail motor car.
介绍了新型电传动重型轨道车的总体布置、主要技术参数、动力装置、传动系统、车体、制动系统、走行部、型式试验及考核运行等。
The press straightening process of heavy rail was simulated and researched by finite element software of ANSYS.
利用有限元软件ANSYS对重轨的压力矫直过程进行了三堆有限元模拟，对重轨矫直过程中的弹塑性变形过程进行了分析。
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。
Combined heavy rail trains have been widely opened in China Datong-Qinhuangdao line, which has made significant economic efficiency and social benefits.
组合式重载列车已在我国大秦铁路广泛开行，取得了显著的经济效率和社会效益。
Combined heavy rail trains have been widely opened in China Datong-Qinhuangdao line, which has made significant economic efficiency and social benefits.
组合式重载列车已在我国大秦铁路广泛开行，取得了显著的经济效率和社会效益。
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