A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PEARLITIC RAIL
To achieve high 0.2% yield stress effective for enhancing fatigue damage resistance of a rail on the rail after product shipment.SOLUTION: There is provided a pearlitic rail having steel material inspection certification describing at least a measurement result of 0.2% yield stress of a rail head, having a component composition containing, by mass%, C:0.70 to 0.85%, Si:0.1 to 1.5%, Mn:0.4 to 1.5%, P:0.035% or less, S:0.010% or less and Cr:0.05 to 1.50%, and the balance Fe with inevitable impurities, and enhancement amount of 0.2% yield stress at 90 days after creation date of the steel material inspection certification to 0.2% yield stress described in the steel material inspection certification of 40 MPa or more.SELECTED DRAWING: None
【課題】レールの耐疲労損傷性の向上に有効な、高い０．２％耐力を製品出荷後のレールにおいて実現する。【解決手段】少なくともレール頭部の０．２％耐力の測定結果が記載された鋼材検査証明書を備えるレールであって、質量％で、Ｃ：０．７０〜０．８５％、Ｓｉ：０．１〜１．５％、Ｍｎ：０．４〜１．５％、Ｐ：０．０３５％以下、Ｓ：０．０１０％以下およびＣｒ：０．０５〜１．５０％を含有し、残部がＦｅおよび不可避的不純物の成分組成を有し、前記鋼材検査証明書に記載された０．２％耐力に対して、該鋼材検査証明書の作成日から少なくとも９０日経過後の０．２％耐力の向上代が４０ＭＰａ以上であるパーライト系レール。【選択図】 なし
PEARLITIC RAIL
To achieve high 0.2% yield stress effective for enhancing fatigue damage resistance of a rail on the rail after product shipment.SOLUTION: There is provided a pearlitic rail having steel material inspection certification describing at least a measurement result of 0.2% yield stress of a rail head, having a component composition containing, by mass%, C:0.70 to 0.85%, Si:0.1 to 1.5%, Mn:0.4 to 1.5%, P:0.035% or less, S:0.010% or less and Cr:0.05 to 1.50%, and the balance Fe with inevitable impurities, and enhancement amount of 0.2% yield stress at 90 days after creation date of the steel material inspection certification to 0.2% yield stress described in the steel material inspection certification of 40 MPa or more.SELECTED DRAWING: None
【課題】レールの耐疲労損傷性の向上に有効な、高い０．２％耐力を製品出荷後のレールにおいて実現する。【解決手段】少なくともレール頭部の０．２％耐力の測定結果が記載された鋼材検査証明書を備えるレールであって、質量％で、Ｃ：０．７０〜０．８５％、Ｓｉ：０．１〜１．５％、Ｍｎ：０．４〜１．５％、Ｐ：０．０３５％以下、Ｓ：０．０１０％以下およびＣｒ：０．０５〜１．５０％を含有し、残部がＦｅおよび不可避的不純物の成分組成を有し、前記鋼材検査証明書に記載された０．２％耐力に対して、該鋼材検査証明書の作成日から少なくとも９０日経過後の０．２％耐力の向上代が４０ＭＰａ以上であるパーライト系レール。【選択図】 なし
PEARLITIC RAIL
パーライト系レール
HONJO MINORU (author) / KIMURA TATSUKI (author) / ICHINOMIYA KATSUYUKI (author) / HASE KAZUKUNI (author)
2020-04-02
Patent
Electronic Resource
Japanese
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