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1. 发明公开

US20240043949A1 WIRE ROD FOR CONCRETE REINFORCING STEEL FIBER, STEEL FIBER, AND MANUFACTURING METHOD THEREFOR 审中-公开
公开(公告)号：US20240043949A1
公开(公告)日：2024-02-08
申请号：US18268057
申请日：2021-12-13
申请人： POSCO CO., LTD
发明人： Yo-sep YANG , Jaeseung LEE , Je-wook JANG , Manjae LEE
IPC分类号： C21D8/08 , C22C38/02 , C22C38/04 , C22C38/00 , C21D9/52 , C21D8/02 , C21D8/06
CPC分类号： C21D8/08 , C22C38/02 , C22C38/04 , C22C38/002 , C21D9/525 , C21D8/0226 , C21D8/0263 , C21D8/065 , C21D2211/005 , C21D2211/009
摘要： Provided is a wire rod for a concrete reinforcing steel fiber, a steel fiber, and a manufacturing method therefor. According to one disclosed embodiment of a wire rod for a concrete reinforcing steel fiber, the wire rod comprises, by weight, C: 0.01 to 0.04%, Si: 0.07 to 0.3%, Mn: 1.0 to 2.0%, P: 0.1 to 0.3% and the balance of Fe and other unavoidable impurities, wherein, when the radius of the wire rod is r, in a region from the center of a cross section perpendicular of the longitudinal direction to 0.95*r, the area fraction of ferrite is 90% or more, and the remainder comprises pearlite, wherein the average grain size of the ferrite may be 30 μm or less and the colony size of the pearlite may be 10 μm or less.

2. 发明授权

US10774534B2 Deformed reinforcing bar 有权
公开(公告)号：US10774534B2
公开(公告)日：2020-09-15
申请号：US16076779
申请日：2017-02-08
申请人： JFE STEEL CORPORATION
发明人： Kiyoshi Uwai , Takashi Iwamoto , Kazukuni Hase
IPC分类号： E04C5/06 , C22C38/60 , E04C5/03 , C22C38/38 , C21D7/10 , C21D8/08 , C21D6/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/24 , C22C38/26 , C21D9/00
摘要： A high manganese content deformed reinforcing bar having an austenite single phase microstructure has excellent bending workability. A deformed reinforcing bar includes a chemical composition containing, in mass %, C: 0.7% or more and 1.2% or less, Si: 1.0% or less, Mn: 9% or more and 15% or less, Cr: 1.0% or less, P: 0.03% or less, and S: 0.05% or less, the balance consisting of Fe and inevitable impurities; and a microstructure comprising an austenite single phase. The ratio of the difference between the maximum and minimum hardness at a periphery of a cross-section perpendicular to the longitudinal direction with respect to a central average hardness is 15% or less. Two or more ribs extend in the longitudinal direction at equal intervals in a cross-sectional circumferential direction. The ratio of the difference between the maximum and minimum width of the ribs to the minimum width is 50% or less.

3. 发明授权

US5873958A High strength and high toughness steel wires and method for making the same 失效
标题翻译：高强度高韧性钢丝及其制造方法
公开(公告)号：US5873958A
公开(公告)日：1999-02-23
申请号：US921517
申请日：1997-09-02
申请人： Koichi Makii , Hiroshi Yaguchi , Nobuhiko Ibaraki , Takaaki Minamida , Masato Kaiso
发明人： Koichi Makii , Hiroshi Yaguchi , Nobuhiko Ibaraki , Takaaki Minamida , Masato Kaiso
IPC分类号： C21D8/06 , C21D8/08 , C21D9/52 , C22C38/00 , C22C38/18
CPC分类号： C21D8/06 , C21D2201/03 , C21D2211/003 , Y10S977/763
摘要： A steel wire is composed mainly of fine pearlite and/or coarse pearlite, where the lamellar cementite in the pearlite is amorphous or amorphous-like. Alternatively, the wire may be composed mainly of bainite, where the cementite in the bainite is amorphous or amorphous-like. To manufacture the steel wire, a starting steel product is subjected repeatedly to patenting and cold drawing, and then subjected to final drawing at a true strain of 2.0 or above while cooling. The steel wire is higher in strength and toughness than wire whose lamellar cementite consists of nano crystals. The steel wire does not suffer any delamination when subjected to torsion.
摘要翻译：钢丝主要由细珠光体和/或粗珠光体组成，其中珠光体中的层状渗碳体是无定形的或无定形的。或者，线可以主要由贝氏体组成，其中贝氏体中的渗碳体是无定形的或非晶态的。为了制造钢丝，将起始钢产品反复进行专利和冷拉伸，然后在冷却时以2.0或更高的真实应变进行最终拉伸。钢丝的强度和韧性高于层状渗碳体由纳米晶体组成的钢丝。钢丝受扭时不会发生分层。

4. 发明授权

US4594113A Process for producing reinforcing steel in the form of rods or rod wire 失效
标题翻译：用于生产杆或杆丝形式的钢筋的方法
公开(公告)号：US4594113A
公开(公告)日：1986-06-10
申请号：US738598
申请日：1985-05-28
申请人： Emil Elsner , Horst Brehmer
发明人： Emil Elsner , Horst Brehmer
IPC分类号： C21D8/08 , C21D9/52
CPC分类号： C21D9/525 , C21D8/08
摘要： For the production of a reinforcing steel with a higher yield point and good weldability and toughness, microalloying elements are alloyed with the steel and their proportion represents 0.02 and 0.06% vanadium and 0.01 to 0.02% nitrogen, said proportions not being sufficient for achieving a higher yield point of at least 450 N/mm.sup.2. However, this is reached if the rolling stock undergoes controlled, but relatively limited cooling during or after rolling, in such a way that the compensating temperature of the steel reaches at least 700.degree. C. Due to the fact that the microalloying elements are only alloyed in small quantities and only relatively small water quantities are required, reinforcing steel can be economically produced. In addition, the process permits coiling in the case of wire rolling and can also be used on other rolled steel products.
摘要翻译：为了生产具有较高屈服点和良好焊接性和韧性的钢筋，微合金元素与钢合金化，其比例为0.02和0.06％的钒和0.01至0.02％的氮，所述比例不足以达到较高的屈服点至少为450N / mm2。然而，如果轧制过程中轧制期间或轧制后的轧制材料受到控制但相对有限的冷却，钢的补偿温度达到至少700℃，则达到这一点。由于微合金元素仅合金化少量，只需要相对较小的水量，可以经济地生产钢筋。此外，该方法允许在丝网轧制的情况下进行卷取，并且也可以用于其它轧制钢产品。

5. 发明授权

US3102060A Method for the mechanical twisting of cold-formed profile steels 失效
标题翻译：冷成型型钢的机械扭转方法
公开(公告)号：US3102060A
公开(公告)日：1963-08-27
申请号：US85953059
申请日：1959-12-14
申请人： SCHOCH AG ERNST
发明人： HANS SCHOCH , EUGEN WYSS
IPC分类号： B21D11/15 , B21F7/00 , C21D8/08
CPC分类号： B21D11/15 , B21F7/00 , C21D8/08

6. 发明授权

US2716080A Process for increasing the strength of steel 失效
标题翻译：提高钢筋强度的工艺
公开(公告)号：US2716080A
公开(公告)日：1955-08-23
申请号：US25056751
申请日：1951-10-09
申请人： JOHANNES SCHWARZ
发明人： JOHANNES SCHWARZ
IPC分类号： C21D8/08 , C21D8/10
CPC分类号： C21D8/08 , C21D8/10

7. 发明授权

US5762724A High strength steel strand for prestressed concrete and method for manufacturing the same 失效
标题翻译：用于预应力混凝土的高强度钢绞线及其制造方法
公开(公告)号：US5762724A
公开(公告)日：1998-06-09
申请号：US701272
申请日：1996-08-22
申请人： Yukio Yamaoka , Masao Yamada , Masaru Kodama , Toshiki Suwa , Nobuhiko Ibaraki , Masato Kaiso
发明人： Yukio Yamaoka , Masao Yamada , Masaru Kodama , Toshiki Suwa , Nobuhiko Ibaraki , Masato Kaiso
IPC分类号： C21D8/08 , C21D9/52 , C21D9/64 , C22C38/02 , C21D8/06
CPC分类号： C21D9/525 , C21D8/08 , C21D2211/003 , C21D2211/009 , C21D9/64
摘要： A high strength steel strand for PC of a wire material having a pearlite structure and containing 0.80 to 1.30% of C, 0.60 to 2.50% of Si and 0.30 to 1.50% of Mn, remainder being Fe and unavoidable impurities, wherein a cementite portion of the wire material comprises a mixed structure of fibrous cementite and granular cementite, the volumetric proportion of the granular cementite to the total cementite is 10 to 40%, the particle diameter of the granular cementite is 40 to 300.ANG., and the strand has a tensile strength of 235 kgf/mm.sup.2 or higher and an elongation of 3.5% or greater.
摘要翻译：一种具有珠光体组织并且含有C：0.80〜1.30％，Si：0.60〜2.50％，Mn：0.30〜1.50％的PC材的高强度钢丝，余量为Fe和不可避免的杂质，其中，线材包括纤维渗碳体和颗粒渗碳体的混合结构，粒状渗碳体与总渗碳体的体积比例为10〜40％，粒状渗碳体的粒径为40〜300，强度为235kgf / mm2以上，伸长率为3.5％以上。

8. 发明授权

US4913751A Higher strength steel, especially reinforcing steel or drawing shop feed stock with improved material properties and improved processability 失效
标题翻译：高强度钢，特别是加强钢或拉丝车间原料，具有改善的材料性能和改进的加工性能
公开(公告)号：US4913751A
公开(公告)日：1990-04-03
申请号：US229596
申请日：1988-08-08
申请人： Wolfgang Schmitt , Franz Tamm , Gunter Lankau
发明人： Wolfgang Schmitt , Franz Tamm , Gunter Lankau
IPC分类号： C21D8/08 , C21D9/52 , C22C38/00
CPC分类号： C21D9/525 , C21D8/08 , C21D9/52 , Y10S148/902
摘要： An elongated steel element of enhanced strength suitable for use as reinforcement for concrete or drawing feed stock has a cross section which is heterogenous in structure and strength, the cross section comprising a core, a peripheral layer and a transition region between the core and the peripheral layer, the transition region consisting essentially of higher strength, harder martensite, the peripheral layer being of lower strength than the transition region and the core being of lower strength than the peripheral layer.
摘要翻译：适合用作混凝土或拉伸原料增强材料的增强强度的细长钢元件具有结构和强度不均匀的横截面，横截面包括芯，周边层和芯与周边之间的过渡区所述过渡区域基本上由较高强度，较硬的马氏体组成，所述外围层的强度低于所述过渡区域，并且所述芯部的强度低于所述周边层。

9. 发明授权

US4877463A Method for producing rolled steel products, particularly threaded steel tension members 失效
标题翻译：生产轧制钢产品的方法，特别是螺纹钢张力部件
公开(公告)号：US4877463A
公开(公告)日：1989-10-31
申请号：US205556
申请日：1988-06-07
申请人： Max Aicher , Dieter Jungwirth , Hans-Wilhelm Klein , Dieter Russwurm
发明人： Max Aicher , Dieter Jungwirth , Hans-Wilhelm Klein , Dieter Russwurm
IPC分类号： B21B1/16 , C21D1/19 , C21D8/08 , C21D9/00 , C21D9/52
CPC分类号： C21D8/08 , C21D1/19 , Y10S148/902 , Y10S148/907
摘要： To produce threaded steel tension members, steel is used with a C-content of 0.50 to 0.80%, preferably 0.75%, a Si-content of 0.20 to 0.50%, preferably 0.25%, and a Mn content of 0.30 to 0.80%, preferably 0.60%. Exiting from the rolling heat at the outlet side of the finishing stand after hot rolling, the tension member or rod is subjected to surface quenching by a cooling medium, preferably water, so that the steel in a rim zone R.sub.1 is transformed immediately and completely into martensite, while the heat content remaining in the core zone K.sub.1 does not effect a tempering of the martensite rim zone during the subsequent cooling beyond the range of the intermediate stage. Steel tension members of this type have a high ductility and toughness at a high yield limit and high strength, they are corrosion-resistant to a great degree and have a wear resistant surface which makes them particularly suitable for threaded tension rods in which the threads are produced either by a cold forming operation or hot rolled ribs.
摘要翻译：为了制造螺纹钢张力构件，使用C含量为0.20〜0.50％，优选为0.25％，Mn含量为0.30〜0.80％的C含量为0.50〜0.80％，优选为0.75％ 0.60％。从热轧后的精轧机出口侧的轧制热量出发，通过冷却介质，优选水进行表面淬火，使得边缘区域R1中的钢被立即变形并完全变形马氏体，而在随后的冷却过程中，在核心区域K1中残留的热量不会使马氏体边缘区域回火到超过中间阶段的范围。这种类型的钢张力构件在高屈服极限和高强度下具有高延展性和韧性，它们在很大程度上具有耐腐蚀性，并且具有耐磨表面，使得它们特别适用于螺纹的螺纹拉杆通过冷成型操作或热轧肋制造。

10. 发明授权

US4605449A Process for producing a rolled steel product having high weldability, a high yield strength and a good notch impact toughness at very low temperatures 失效
标题翻译：具有高焊接性，高屈服强度和极低温下良好的切口冲击韧性的轧制钢产品的制造方法
公开(公告)号：US4605449A
公开(公告)日：1986-08-12
申请号：US695386
申请日：1985-01-28
申请人： Arthur Schummer , Jean de la Hamette , Guy Lessel , Jean-Paul Beck , Armand Frantz
发明人： Arthur Schummer , Jean de la Hamette , Guy Lessel , Jean-Paul Beck , Armand Frantz
IPC分类号： C21D7/13 , C21D8/08 , C21D9/52
CPC分类号： C21D8/08 , C21D7/13
摘要： A process for producing rolled steel products, especially reinforcing rod for concrete or other elements to be encased in concrete and having good weldability, a high yield strength and high energy absorption for the Charpy V impact test at very low temperatures comprising forming a silicon and aluminum containing steel whose carbon content (C), manganese content (MN), and niobium content (NB) are related by the relationship set forth below. The steel blank is rolled so that the last three passes result in more than 20% of the total cross section reduction, these rolling passes are carried out so that the temperature T1 before, the temperature T2 during, and the temperature T3 after rolling are also related to the diameter D in the manner set forth below to yield a high yield strength LE and a high energy absorption expressed as KCV at -120.degree. C. The relationships are:LE=1035+510 C+192 MN+2270 NB-0.21 T1-0.42 T2-0.48 T3-3.51 DandKCV=2202-2066 C+23.20 MN-2064 NB-0.77 T1-1.24 T2-0.23 T3-1.98 D.
摘要翻译：一种制造轧制钢产品的方法，特别是用于混凝土或其他要被包装在混凝土中并且具有良好可焊性的钢筋的加强杆，在非常低的温度下用于夏比V冲击试验的高屈服强度和高能量吸收的方法，包括形成硅和铝碳含量（C），锰含量（MN）和铌含量（NB）的含碳钢通过下述关系相关。钢坯被轧制，使最后三次通过导致总横截面减少的20％以上，这些轧制通过进行，使得轧制前的温度T1，温度T2和轧制之后的温度T3也是以下列方式与直径D相关，以产生高屈服强度LE和在-120℃下表示为KCV的高能量吸收。关系是：LE = 1035 + 510C + 192MN + 2270 NB-0.21 T1-0.42 T2-0.48 T3-3.51 D和KCV = 2202-2066 C + 23.20 MN-2064 NB-0.77 T1-1.24 T2-0.23 T3-1.98 D.

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