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。
High speed rail material: low carbon steel wire high speed rail production process: weaving and welding.
高速护栏材质：低碳钢丝高速护栏制作工艺：编织焊接而成。
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 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。
It is very difficult to welding a high carbon steel rail and a high manganese steel frog, which is still a worldwide puzzle.
碳钢钢轨与高锰钢辙叉的焊接难度很大，仍属国际性难题。
It is very difficult to welding a high carbon steel rail and a high manganese steel frog, which is still a worldwide puzzle.
碳钢钢轨与高锰钢辙叉的焊接难度很大，仍属国际性难题。
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