高強度PC鋼線
    1.
    发明申请
    高強度PC鋼線 审中-公开
    高强度PC钢丝

    公开(公告)号:WO2017014231A1

    公开(公告)日:2017-01-26

    申请号:PCT/JP2016/071264

    申请日:2016-07-20

    CPC classification number: C22C38/00 C21D8/08 C22C38/54

    Abstract: 鋼線の化学組成が、質量%で、C:0.90~1.10%、Si:0.80~1.50%、Mn:0.30~0.70%、P:0.030%以下、S:0.030%以下、Al:0.010~0.070%、N:0.0010~0.010%、Cr:0~0.50%、V:0~0.10%、B:0~0.005%、Ni:0~1.0%、Cu:0~0.50%、ならびに、残部:Feおよび不純物であり、鋼線の表面から0.1D[D:鋼線の線径]の部位(表層部)のビッカース硬さ(Hv S )と表層部より内側の領域のビッカース硬さ(Hv I )との比が[1.10<Hv S /Hv I ≦1.15]を満足し、鋼線の表面から0.01Dまでの領域(最表層領域)における金属組織が、面積%で、パーライト組織:80%未満、ならびに、残部:フェライト組織および/またはベイナイト組織であり、上記最表層領域より内側の領域における金属組織が、面積%で、パーライト組織:95%以上であり、かつ、引張強さが2000~2400MPaである、高強度PC鋼線。この高強度PC鋼線は、製造方法が容易であって、かつ、耐遅れ破壊特性に優れる。

    Abstract translation: 该高强度PC钢丝的化学成分以质量%计含有C:0.90〜1.10%,Si:0.80〜1.50%,Mn:0.30〜0.70%,P:0.030%以下,S:0.030%或 较少,Al:0.010-0.070%,N:0.0010-0.010%,Cr:0-0.50%,V:0-0.10%,B:0-0.005%,Ni:0-1.0%,Cu:0-0.50% ,其余为Fe和杂质。 满足以下条件:表面层的面积为0.1D [D:钢丝直径]的维氏硬度与钢丝表面(表面层)的面积与维氏硬度(HvI)之比 [1.10

    WIRE ROD FOR DRAWING HAVING EXCELLENT DRAWABILITY, SUPER-HIGH-STRENGTH STEEL WIRE AND MANUFACTURING METHOD THEREOF
    2.
    发明申请
    WIRE ROD FOR DRAWING HAVING EXCELLENT DRAWABILITY, SUPER-HIGH-STRENGTH STEEL WIRE AND MANUFACTURING METHOD THEREOF 审中-公开
    用于具有优良可拉拔性的图纸的钢丝绳,超高强度钢丝及其制造方法

    公开(公告)号:WO2011055919A3

    公开(公告)日:2011-07-07

    申请号:PCT/KR2010007279

    申请日:2010-10-22

    CPC classification number: C21D8/08 C21D1/20 C21D9/525 C22C38/02 C22C38/18

    Abstract: A wire rod having excellent drawability includes, by wt%, 0.8-1.0% C, 0.3-0.7% Mn, 0.2-0.6% Cr and a balance of Fe and inevitable impurities. A method for manufacturing a super-high-strength steel wire includes: a first heat-treatment step of heating a wire rod having the above steel composition, and maintaining the heated wire rod at 1100~1200?; a second heat-treatment step of maintaining the heated wire rod at 900~1000?; a step of subjecting the wire rod of the second heat-treatment step to lead patenting at 540~640?; and a step of drawing the lead-patented wire rod.

    Abstract translation: 具有优良可拉伸性的线材按重量百分比包括:0.8-1.0%的C,0.3-0.7%的Mn,0.2-0.6%的Cr以及余量的Fe和不可避免的杂质。 制造超高强度钢丝的方法包括:第一热处理步骤,加热具有上述钢成分的线材,并将加热的线材保持在1100〜1200℃; 将加热的线材保持在900〜1000℃的第二热处理步骤; 对第二热处理工序的线材进行540〜640℃的铅淬火处理的工序。 以及拉拔专利线材的步骤。

    PROCESS FOR MANUFACTURING ROLLED STEEL PRODUCTS
    3.
    发明申请
    PROCESS FOR MANUFACTURING ROLLED STEEL PRODUCTS 审中-公开
    制造轧制钢产品的工艺

    公开(公告)号:WO1988002031A1

    公开(公告)日:1988-03-24

    申请号:PCT/EP1987000537

    申请日:1987-09-18

    Inventor: AICHER, Max

    CPC classification number: C21D1/30 C21D1/19 C21D8/08

    Abstract: Process for manufacturing rolled steel products, for example tension steels suitable for threading or similar, according to which steels having a C content of between 0.50 and 0.80 % by weight, an Si content of between 0.20 and 0.60 % by weight, and a Mn content of between 0.30 and 0.80 % by weight are subjected, by means of cooling after hot rolling provided by the rolling heat on the output side of the finishing stand, to a surface hardening operation in such a way that the material is immediately and completely transformed into martensite in an edge region, whereas the heat content remaining in the central region causes, during subsequent cooling, the tempering of the martensitic edge region which does not go beyond the bainite region. The process is characterized in that after cooling, cold working is effected followed by tempering. The degree of elongation is preferably 0.5 to 1.5 %; tempering is preferably effected at a temperature between 350 DEG C and 380 DEG C and for a hold time of 5 to 60 seconds at maximum temperature. With this process it is possible to manufacture, in a simple and a profitable manner, rolled steel products, for example tension steels, which fully comply with the requirements of the building industry as regards deformability and mechanical characteristics.

    Abstract translation: 制造轧制钢产品的方法,例如适用于螺纹或类似的张力钢,根据该方法,C含量为0.50-0.80%(重量),Si含量为0.20-0.60%(重量),Mn含量 为0.30〜0.80重量%,通过在精轧机的输出侧的轧制热提供的热轧后的冷却进行表面硬化处理,使材料立即完全转变为 马氏体在边缘区域中,而在中心区域中残留的热量在随后的冷却期间导致不超过贝氏体区域的马氏体边缘区域的回火。 该方法的特征在于冷却后进行冷加工,然后回火。 伸长率优选为0.5〜1.5%。 回火优选在350℃至380℃的温度下进行,并在最高温度下进行5至60秒的保持时间。 通过这一过程,可以以简单而有利可图的方式制造出完全符合建筑行业在变形性和机械特性方面的要求的轧制钢产品,例如张力钢。

    ULTRA-HIGH-STRENGTH STEEL BAR AND METHOD FOR MANUFACTURING SAME
    4.
    发明申请
    ULTRA-HIGH-STRENGTH STEEL BAR AND METHOD FOR MANUFACTURING SAME 审中-公开
    超高强度钢条及其制造方法

    公开(公告)号:WO2012002638A3

    公开(公告)日:2012-02-23

    申请号:PCT/KR2011002744

    申请日:2011-04-18

    Abstract: The present invention relates to an ultra-high-strength steel bar and to a method for manufacturing same, wherein the steel bar comprises: C: 0.05 to 0.45 wt %, Si: 0.10 to 0.35 wt %, Mn: 0.1 to 0.85 wt %, Cr: 0.6 to 1.20 wt %, Mo: 0.05 to 0.35 wt %, with the remainder being Fe and other impurities. The method for manufacturing the steel bar involves twice performing a process of reheating and rough-milling billets for the steel bar comprising the above-described alloy composition so as to reduce the prior-austenite grain size, and performing intermediate roll-milling and finishing roll-milling to manufacture steel bars and cooling the steel bars with water to a temperature of 400 to 600°C through a Tempcore process such that a fine ferrite structure is formed at a center layer. The method of the present invention involves forming a martensite structure, serving as a hardening layer, at a surface layer, by means of the alloy design, heat treatment, rolling ratio control, Tempcore process, etc., and enables the center layer to have a fine ferrite structure, thereby producing an ultra-high-strength steel bar which has a yield strength of 800MPa or higher, a tensile strength of 900 MPa or higher, and an elongation percentage of 10% or higher, and which satisfies 180° bending test. The steel bar of the present invention can be combined with high-strength concrete to be effectively used as a main bar or a shear-reinforcing bar in a building structure.

    Abstract translation: 本发明涉及一种超高强度钢筋及其制造方法,其中,所述钢筋由C:0.05〜0.45重量%,Si:0.10〜0.35重量%,Mn:0.1〜0.85重量% ,Cr:0.6〜1.20重量%,Mo:0.05〜0.35重量%,余量为Fe等杂质。 钢棒的制造方法包括两次对包含上述合金组成的钢棒进行再加热和粗加工钢坯的工序,以降低原奥氏体粒径,并且进行中间辊磨和精轧辊 - 通过Tempcore工艺,用水制造钢筋并用水将钢筋冷却至400-600℃的温度,从而在中心层形成精细的铁素体结构。 本发明的方法涉及通过合金设计,热处理,轧制比率控制,Tempcore工艺等在表面层形成用作硬化层的马氏体结构,并使中心层具有 由此制造屈服强度为800MPa以上,抗拉强度为900MPa以上,延伸率为10%以上的超高强度钢棒,并且满足180°弯曲 测试。 本发明的钢筋可以与高强度混凝土组合使用,以有效地用作建筑结构中的主筋或抗剪钢筋。

    PROCESS OF ROLLING AND OF THERMAL TREATING OF ROLLED SECTIONS
    5.
    发明申请
    PROCESS OF ROLLING AND OF THERMAL TREATING OF ROLLED SECTIONS 审中-公开
    轧制过程和热处理轧制过程

    公开(公告)号:WO2010055067A1

    公开(公告)日:2010-05-20

    申请号:PCT/EP2009/065003

    申请日:2009-11-11

    CPC classification number: C21D8/08 B21B45/0224 C21D9/525 C21D9/5732

    Abstract: A process of rolling and of thermal treating of rolled sections, in particular steel bars, in which the rolled section is passed through a pre-finishing stand PM, through two waterboxes WB1, WB2 and a finishing mill FM at the inlet temperature T in chosen with a value such that the outlet temperature T out of the rolled section does not exceed temperature T out_max = (Ac3-d 0,7 )°C, where "Ac3" is the temperature at which in the steel, during heating, the transformation of ferrite into austenite ends, and "d" is the diameter of the bar to be treated.

    Abstract translation: 轧制部分,特别是钢棒的轧制和热处理的过程,其中轧制部分通过预精轧机架PM,通过两个水箱WB1,WB2和精轧机FM在入口温度Tin下进行轧制和热处理, 使得轧制部的出口温度Tout不超过温度Tout_max =(Ac3-d0.7)℃的值,其中“Ac3”是钢中的温度,在加热期间,将铁素体转变成奥氏体 末端,“d”是要处理的条的直径。

    METHOD FOR PRODUCING STEEL AND USE THEREOF IN STEEL CONSTRUCTION
    6.
    发明申请
    METHOD FOR PRODUCING STEEL AND USE THEREOF IN STEEL CONSTRUCTION 审中-公开
    用于生产钢丝和它的用途钢

    公开(公告)号:WO01027339A1

    公开(公告)日:2001-04-19

    申请号:PCT/EP2000/009975

    申请日:2000-10-11

    Abstract: The invention relates to a method for improving the surface characteristics of low-alloyed heat treatable steel in particular for the production of high strength steel wire comprising a martensitic structural base in order to withstand very high pressure and tensile stress in steel constructions. Said low-alloyed martensitic convertible steel is subjected to one or more processing steps in a thermal treatment procedure of a targetted, evenly distributed edge decarburization process at a depth of 1-15 % of the steel mass located below the surface. An arrangement of several steel wire rods produced according to the inventive method is also disclosed.

    Abstract translation: 公开了一种用于提高低可治疗钢的表面性质尤其是用于生产高强度钢线用马氏体微观结构的碱,用于接收在钢结构描述非常高的压缩和拉伸应力的方法。 低合金的马氏体转换钢在靶向均匀分布脱碳其热处理的一个或多个处理级与对应于地下的钢的质量的1〜15%的深度进行。 此外,根据制备的钢线材的方法的多个的配置被示出。

    RUST-RESISTANT CONSTRUCTIONAL STEEL AND METHOD FOR PRODUCING THE SAME
    7.
    发明申请
    RUST-RESISTANT CONSTRUCTIONAL STEEL AND METHOD FOR PRODUCING THE SAME 审中-公开
    NICHROSTENDER结构钢及其制造方法

    公开(公告)号:WO99031283A1

    公开(公告)日:1999-06-24

    申请号:PCT/DE1998/003583

    申请日:1998-12-07

    Abstract: The invention relates to a method for producing rust-resistant constructional steels which can be used for sheets, strips, pipes, bars etc., in a wide range of areas of application. One preferred use for the inventive steels is the production of smooth or ribbed, weldable concrete steels, i.e. rust-resistant reinforcement steels for reinforced concrete construction. The aim of the invention is to produce rust-resistant, weldable constructional steels which can be classified as martensitic or ferritic-martensitic, which can be manufactured without annealing and cold-forming according a simplified method, and which have at least equivalent material characteristics. According to the invention, the desired characteristics of the rust-resistant constructional steels, such as resistance and strength characteristics, weldability and resistance to corrosion are obtained by means of thermomechanical treatment using the rolling heat instead of annealing and subsequent cold-forming. On cooling, the rust-resistant martensitic or ferritic-martensitic constructional steels were found to have obtained the same or better properties directly from the rolling heat as if they had been heat-treated and then cold-formed. The invention therefore provides a method for producing rust-resistant constructional or concrete steel without annealing and cold-forming, and therefore more cheaply.

    Abstract translation: 生产不锈钢结构钢等在很宽范围的片材,带材,管材,棒材的应用中使用进行说明。 应用的优选领域是生产光滑或带肋的,从而也可焊接钢混凝土,即 不锈钢加固钢筋混凝土建筑。 本发明的目的是能够生产不锈钢,可焊接的结构钢,一旦属于马氏体或铁素体 - 马氏体类,可以通过简化的工艺,而不退火和冷成形,并且具有在另一方面至少等同的材料特性来制造。 根据本发明的概念,不锈钢结构钢的预期性能,如强度和韧性,可焊性,并通过从所述轧制热形变热处理的耐腐蚀性和不通过退火和随后的冷加工可以实现的。 据发现直接从等于或高于热处理和随后冷成形后更好的轧制热性能的马氏体不锈钢和铁素体 - 马氏体钢冷却过程中产生的。 利用本发明的方法,实现了该退火可以省略冷锻和不锈钢结构钢或混凝土,可以低成本地制造。

    線材及びこれを用いた鋼線
    9.
    发明申请
    線材及びこれを用いた鋼線 审中-公开
    使用相同的钢丝绳和钢丝

    公开(公告)号:WO2013146676A1

    公开(公告)日:2013-10-03

    申请号:PCT/JP2013/058566

    申请日:2013-03-25

    Abstract:  線材は、所定量のC、Si、Mn、N、Al、P、Sを含み、残部が鉄及び不可避不純物であり、Al量とN量が下記式(1)の関係を満足し、 [Al]≦-2.1×10×[N]+0.255 ・・・(1) (但し、式(1)において[Al]、[N]は、それぞれAl、Nの含有量(質量%)である。) 組織の95面積%以上がパーライト組織であるとともに、AlN量が0.005%以上であり、且つ、長さaと厚さbの相乗平均(ab) 1/2 で表されるAlNの径d GM の最大値極値分布において、d GM が10~20μmであるAlNの割合が、個数基準で50%以上である。 線材は、高強度化に伴う耐遅れ破壊特性の低下を抑制し、建築基準に適合する耐遅れ破壊特性を有する高強度PC鋼線、ワイヤーロープ等に用いることができる。

    Abstract translation: 本发明的线材包括预定量的C,Si,Mn,N,Al,P和S,其余为铁和不可避免的杂质,Al的量和满足由式 1):[Al] <= -2.1×10×[N] + 0.255(式(1)中的[Al]和[N]分别为Al和N的含量(质量%)),至少95 结构的面积%为珠光体组织,AlN的量为0.005%以上,AlN直径dGM为dGM的极值分布中的AlN比为10〜20μm,表示为dGM的最大值 因为长度a和厚度b的几何平均值(ab)1/2,在数量上至少为50%。 在该线材中,抑制伴随强度增加的延迟断裂特性的降低,线材可用于具有适合于建筑物的延迟断裂特性的高强度PC钢丝绳,钢丝绳等中 码。

    WIRE ROD FOR DRAWING HAVING EXCELLENT DRAWABILITY, SUPER-HIGH-STRENGTH STEEL WIRE AND MANUFACTURING METHOD THEREOF
    10.
    发明申请
    WIRE ROD FOR DRAWING HAVING EXCELLENT DRAWABILITY, SUPER-HIGH-STRENGTH STEEL WIRE AND MANUFACTURING METHOD THEREOF 审中-公开
    具有优良拉拔性的钢丝绳,超高强度钢丝及其制造方法

    公开(公告)号:WO2011055919A2

    公开(公告)日:2011-05-12

    申请号:PCT/KR2010/007279

    申请日:2010-10-22

    CPC classification number: C21D8/08 C21D1/20 C21D9/525 C22C38/02 C22C38/18

    Abstract: A wire rod having excellent drawability includes, by wt%, 0.8-1.0% C, 0.3-0.7% Mn, 0.2-0.6% Cr and a balance of Fe and inevitable impurities. A method for manufacturing a super-high-strength steel wire includes: a first heat-treatment step of heating a wire rod having the above steel composition, and maintaining the heated wire rod at 1100~1200℃; a second heat-treatment step of maintaining the heated wire rod at 900~1000℃; a step of subjecting the wire rod of the second heat-treatment step to lead patenting at 540~640℃; and a step of drawing the lead-patented wire rod.

    Abstract translation: 具有优异的拉伸性的线材包括重量%,0.8-1.0%C,0.3-0.7%Mn,0.2-0.6%Cr,余量为Fe和不可避免的杂质。 一种超高强度钢丝的制造方法包括:对具有上述钢组成的线材进行加热,将加热的线材保持在1100〜1200℃的第一热处理工序; 将加热的线材保持在900〜1000℃的第二热处理工序; 使第二热处理工序的线材在540〜640℃下进行专利处理的工序; 以及拉丝铅专利线材的步骤。

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