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公开(公告)号：EP3604600A1
公开(公告)日：2020-02-05
申请号：EP19192685.6
申请日：2011-06-07
IPC分类号： C22C38/00 , B21B3/00 , C21D8/00 , C21D9/04 , C22C38/34 , C22C38/54 , B21B1/085 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/40
摘要： A steel rail includes: by mass%, higher than 0.85% to 1.20% of C; 0.05% to 2.00% of Si; 0.05% to 0.50% of Mn; 0.05% to 0.60% of Cr; P≤0.0150%; and the balance consisting of Fe and inevitable impurities, wherein 97% or more of a head surface portion which is in a range from a surface of a head corner portion and a head top portion as a starting point to a depth of 10 mm has a pearlite structure, a Vickers hardness of the pearlite structure is Hv320 to 500, and a CMn/FMn value which is a value obtained by dividing CMn [at.%] that is a Mn concentration of a cementite phase in the pearlite structure by FMn [at.%] that is a Mn concentration of a ferrite phase is equal to or higher than 1.0 and equal to or less than 5.0.
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2.发明公开PEARLITE RAIL HAVING SUPERIOR ABRASION RESISTANCE AND EXCELLENT TOUGHNESS 有权PERLITSCHIENE MIT HOHER ABRIEBFESTIGKEIT UND HERVORRAGENDER FESTIGKEIT
公开(公告)号：EP2343390A1
公开(公告)日：2011-07-13
申请号：EP09823351.3
申请日：2009-10-30
CPC分类号： C22C38/02 , C21C7/0025 , C21C7/064 , C22C38/002 , C22C38/04
摘要： This pearlite rail consists of a steel including: in terms of percent by mass, C: 0.65 to 1.20%; Si: 0.05 to 2.00%; Mn: 0.05 to 2.00%; P≤ 0.0150%; S≤ 0.0100%; Ca: 0.0005 to 0.0200%, and Fe and inevitable impurities as the balance, wherein a head surface portion which ranges from surfaces of head corner portions and a head top portion to a depth of 10 mm has a pearlite structure, a hardness Hv of the pearlite structure is in a range of 320 to 500, and Mn sulfide-based inclusions having major lengths in a range of 10 to 100 µm are present at an amount per unit area in a range of 10 to 200/mm 2 in a cross-section taken along a lengthwise direction in the pearlite structure.
摘要翻译： 该珠光体钢轨由钢组成，包括：按质量％计，C：0.65〜1.20％ Si：0.05〜2.00％ Mn：0.05〜2.00％ P‰0.0150％; S‰‰0.0100％; Ca：0.0005〜0.0200％，作为余量的Fe和不可避免的杂质，其中从头角部分和头顶部分的表面到10mm深度的头表面部分具有珠光体组织，硬度Hv 珠光体组织在320〜500的范围内，主要长度为10〜100μm的Mn硫化物系夹杂物，以10〜200个/ mm 2的范围内的单位面积的量存在， 在珠光体结构中沿长度方向截取的截面。
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3.发明公开PROCESS FOR PRODUCING PEARLITIC RAIL EXCELLENT IN WEARING RESISTANCE AND DUCTILITY 有权方法用于生产具有优良的耐磨强度和延展性珠光体钢轨
公开(公告)号：EP2045341A1
公开(公告)日：2009-04-08
申请号：EP07791533.8
申请日：2007-07-24
CPC分类号： C22C38/04 , B21B1/085 , C21D8/0205 , C21D9/04 , C21D2211/009 , C22C38/02
摘要： The invention provides a method for producing a pearlitic rail by subjecting to at least rough hot rolling and finish hot rolling a billet comprising, in mass%, C: 0.65-1.20%, Si: 0.05-2.00%, Mn: 0.05-2.00%, and a remainder of iron an unavoidable impurities, wherein the finish hot rolling is conducted by rolling at a rail head surface temperature in a range of not higher than 900 °C to not lower than Ar 3 transformation point or Ar cm transformation point to produce a head cumulative reduction of area of not less than 20% and a reaction force ratio of not less than 1.25, and the finish hot rolled rail head surface is subjected to accelerated cooling or spontaneous cooling to at least 550 °C at a cooling rate of 2 to 30 °C/sec, thereby refining the rail head structure to attain a hardness within a predetermined range and improving rail wear resistance and ductility.
摘要翻译： 本发明提供一种方法，用于通过对至少粗热轧和终热轧的钢坯包括产生珠光体钢轨，以质量％计，C：0.65-1.20％以下，Si：0点05分至2：00％以下，Mn：0点05分至2：00％ 和铁不可避免的杂质，worin热精轧的剩余部分是通过在范围不高于900℃的在轨头表面温度轧制到不低于Ar 3相变点或Ar cm相变点，以产生传导 的不小于20％的面积的头部的累积减少和不小于1.25的反作用力比，和精热轧钢轨头部表面进行加速冷却或自然放冷到至少550℃，以冷却速率 为2〜30℃/秒，由此精炼轨头结构以获得预定的范围和改进钢轨的耐磨性和延性内的硬度。
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4.发明公开PEARLITE BASED HIGH-CARBON STEEL RAIL HAVING EXCELLENT DUCTILITY AND PROCESS FOR PRODUCTION THEREOF 审中-公开PERLIT-BASIERTE HARTSTAHLSCHIENE MIT AUSGEZEICHNETERDUKTILITÄTUND HERSTELLUNGSVERFAHRENDAFÜR
公开(公告)号：EP2447383A1
公开(公告)日：2012-05-02
申请号：EP10791775.9
申请日：2010-04-14
CPC分类号： C21D9/04 , C21D8/00 , C21D8/005 , C21D8/0226 , C21D2211/009 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/14
摘要： This high-carbon pearlitic steel rail having excellent ductility, includes: in terms of percent by mass, C: more than 0.85% to 1.40%; Si: 0.10% to 2.00%; Mn: 0.10% to 2.00%; Ti: 0.001 % to 0.01 %; V: 0.005% to 0.20%; and N: less than 0.0040%, with the balance being Fe and inevitable impurities, wherein contents of Ti and V fulfill the following formula (1), and a rail head portion has a pearlite structure. 5 ≤ V % by mass / Ti % by mass ≤ 20
摘要翻译： 这种具有优异延展性的高碳珠光体钢轨包括：以质量％计，C：大于0.85％至1.40％; Si：0.10〜2.00％; Mn：0.10〜2.00％ Ti：0.001〜0.01％ V：0.005〜0.20％ 和N：小于0.0040％，余量为Fe和不可避免的杂质，Ti和V的含量满足下式（1），轨头部具有珠光体组织。 5‰¤V％质量/ Ti％质量‰¤20
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5.发明公开METHOD OF COOLING WELDED RAIL SECTION, DEVICE FOR COOLING WELDED RAIL SECTION, AND WELDED RAIL JOINT 审中-公开冷却方法焊接栏杆部分设备用于冷却焊接轨道部和无缝线路PUSH
公开(公告)号：EP2415885A1
公开(公告)日：2012-02-08
申请号：EP10761386.1
申请日：2010-03-30
IPC分类号： C21D9/04 , B23K31/00 , C21D9/50 , E01B11/46 , B23K101/26
CPC分类号： E01B29/44 , B23K11/04 , B23K23/00 , B23K31/02 , B23K2201/26 , B23K2203/04 , C21D9/04 , C21D9/505 , C21D11/005 , C21D2211/009 , C21D2221/00 , C22C1/02 , E01B11/46
摘要： The invention provides a method of cooling a rail weld zone. The method includes a first rail web portion cooling process of cooling a rail web portion cooling region of the rail weld zone in a part of a temperature range until the completion of transformation from austenite to pearlite, a second rail web portion cooling process of cooling the rail web portion cooling region after the entire rail web portion of the rail weld zone is transformed to pearlite, a foot portion cooling process of cooling a foot portion of the rail weld zone, and a head portion cooling process of cooling a head portion of the rail weld zone. When cooling time of the first and second rail web portion cooling processes is t minute, a k value satisfies an expression represented as -0.1t+0.63≤k≤-0.1t+2.33.
摘要翻译： 本发明提供了一种冷却钢轨焊接区的方法。 该方法包括将第一轨道腹板部分冷却冷却钢轨腹板部分冷却钢轨焊接区的区域中的温度范围内的一部分，直到转化完成从奥氏体到珠光体的过程中，第二柱部冷却冷却的过程 柱部的钢轨焊接区的整个钢轨腹板部分后的冷却区域被变换为珠光体，冷却钢轨焊接区的一个底脚部分的一个底脚部分冷却过程中，和冷却的头部的头部冷却过程 钢轨焊接区。 当冷却所述第一和第二柱部的冷却过程的时间为t分钟，代表作为-0.1t表达的k值为SATIS外资企业+ 0.63‰¤k‰¤-0.1 T + 2.33。
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6.发明公开PEARLITIC RAIL WITH EXCELLENT WEAR RESISTANCE AND TOUGHNESS 有权美国麻省理工学院医学教授VESCHLEISSBESTÄNDIGKEITUND FESTIGKEIT
公开(公告)号：EP2400040A1
公开(公告)日：2011-12-28
申请号：EP10743487.0
申请日：2010-01-21
CPC分类号： C21D9/04 , C21D2211/009 , C22C38/005 , C22C38/02 , C22C38/04
摘要： This pearlitic rail consists of a steel including: in terms of percent by mass, C: 0.65% to 1.20%; Si: 0.05% to 2.00%; Mn: 0.05% to 2.00%; and REM: 0.0005% to 0.0500%, with the balance being Fe and inevitable impurities, wherein, in a head portion of the rail, a head surface portion which ranges from surfaces of head corner portions and a head top portion to a depth of 10 mm has a pearlite structure, and the hardness Hv of the head surface portion is in a range of 320 to 500.
摘要翻译： 该珠光体钢轨由钢包括：按质量百分比计，C：0.65％至1.20％; Si：0.05〜2.00％ Mn：0.05〜2.00％ REM：0.0005〜0.0500％，余量为Fe和不可避免的杂质，其中，在轨道的头部，头部表面部分从头部拐角部分和头顶部分的表面到10深度 mm具有珠光体组织，头表面部分的硬度Hv在320〜500的范围内。
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公开(公告)号：EP3940090A1
公开(公告)日：2022-01-19
申请号：EP20774132.3
申请日：2020-03-02
摘要： A rail including a predetermined chemical composition is provided, in which 90 area% or greater of a metallographic structure in a cross section of a rail web portion is a pearlite structure, a minimum value of a hardness in the cross section of the rail web portion is Hv 300 or greater, and a difference between a maximum value and the minimum value of the hardness in the cross section of the rail web portion is Hv 40 or less.
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公开(公告)号：EP3249070B1
公开(公告)日：2020-03-18
申请号：EP16740299.9
申请日：2016-01-22
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