Non-refined steel being reduced in anisotropy of material and excellent in strength, toughness and machinability
    2.
    发明授权
    Non-refined steel being reduced in anisotropy of material and excellent in strength, toughness and machinability 失效
    非精制钢材料的各向异性降低,强度,韧性和机械加工性优异

    公开(公告)号:US06454881B1

    公开(公告)日:2002-09-24

    申请号:US09979506

    申请日:2001-11-23

    IPC分类号: C22C3820

    摘要: Provided is a non heat-treated steel that requires no particular controls over cooling rates and no aging treatments after hot working, that can sufficiently increase tensile strength, yield strength and toughness even at lightly deformed parts, and furthermore, that has excellent material anisotropy and machinability as an alloy steel for machine structures. In other words, it is a non heat-treated steel that contains: C: more than 0.05 mass % to less than 0.10 mass %; Si: 1.0 mass % or less; Mn: more than 2.2 mass % to 5.0 mass %; S: less than 0.020 mass %; Cu: more than 1.0 mass % to 3.0 mass %; Ni: 3.0 mass % or less; Cr: 0.01 to 2.0 mass %; Al: 0.1 mass % or less; Ti: 0.01 to 0.10 mass %; B: 0.0003 to 0.03 mass %; N: 0.0010 to 0.0200 mass %; O: 0.0060 mass % or less; and the balance Fe and inevitable impurities, and that the steel structure is bainitic having block structures at 10% or more in area ratios.

    摘要翻译: 提供一种非热处理钢,其不需要特别的冷却速度控制和热加工后的时效处理,即使在轻度变形部分也能够充分提高拉伸强度,屈服强度和韧性,此外,具有优异的材料各向异性和 作为机械结构的合金钢的机械加工性。 换句话说,它是一种非热处理钢,其含有:C:大于0.05质量%至小于0.10质量%; Si:1.0质量%以下; Mn:大于2.2质量%〜5.0质量% S:小于0.020质量% Cu:大于1.0质量%〜3.0质量% Ni:3.0质量%以下 Cr:0.01〜2.0质量% Al:0.1质量%以下 Ti:0.01〜0.10质量% B:0.0003〜0.03质量% N:0.0010〜0.0200质量% ○:0.0060质量%以下; 余量为Fe和不可避免的杂质,钢结构为贝氏体,其面积比为10%以上。

    Steel For Machine Structural Use With Excellent Strength, Ductility, And Toughness And Method For Producing The Same
    3.
    发明申请
    Steel For Machine Structural Use With Excellent Strength, Ductility, And Toughness And Method For Producing The Same 审中-公开
    钢结构使用优良的强度,延性和韧性及其生产方法

    公开(公告)号:US20080017283A1

    公开(公告)日:2008-01-24

    申请号:US11795192

    申请日:2006-06-30

    IPC分类号: C21D9/46 C22C38/00

    CPC分类号: C21D9/46 C22C38/00

    摘要: A steel for machine structural use with a better strength-ductility-toughness balance than maraging steel and applications thereof are provided. The steel for machine structural use with excellent strength, ductility, and toughness contains, in percent by mass, more than 0.30% to 0.5% of carbon, 1.0% or less of silicon, 1.5% or less of manganese, 0.025% or less of aluminum, 0.3% to 0.5% of molybdenum, and 0.0005% to 0.01% of boron, and the balance is iron and incidental impurities. The steel has a structure including at least 90% by volume of martensitic structure. The martensitic structure includes blocks having a size of 1.5 μm or less. Dissolved boron is contained in an amount of at least 0.0005% and is present at boundaries of prior austenite grains in a concentration at least 1.5 times that in the prior austenite grains.

    摘要翻译: 提供了一种具有比马氏体时效钢更好的强度 - 延性 - 韧性平衡的机械结构用钢及其应用。 具有优异的强度,延展性和韧性的机械结构用钢,以质量%计含有超过0.30%〜0.5%的碳,1.0%以下的硅,1.5%以下的锰,0.025%以下的 铝,0.3〜0.5%的钼和0.0005〜0.01%的硼,余量为铁和杂质。 该钢具有至少90体积%的马氏体组织。 马氏体结构包括尺寸为1.5μm或更小的块。 溶解硼的含量至少为0.0005%,并且在现有奥氏体晶粒的边界处,其浓度至少为现有奥氏体晶粒中的1.5倍。

    High-Strength Steel and Metal Bolt Excellent In Character of Delayed Fracture
    4.
    发明申请
    High-Strength Steel and Metal Bolt Excellent In Character of Delayed Fracture 审中-公开
    高强度钢和金属螺栓优良延迟断裂性质

    公开(公告)号:US20080264524A1

    公开(公告)日:2008-10-30

    申请号:US11922746

    申请日:2006-10-27

    IPC分类号: C22C38/54

    摘要: A high-strength steel having excellent character of delayed fracture can be manufactured at a low cost without adding expensive alloy elements such as Ni, Co or V in large quantities. The steel including a steel microstructure in which a ratio of martensite phase is 90% or more and a diameter of prior austenite grains is 10 μm or less, the steel microstructure being made by hardening and then tempering at 100° C. to 400° C., the steel including C: more than 0.30% and not more than 0.50% by mass, Si: not more than 1.0% by mass, Mn: not more than 1.5% by mass, Ti: not more than 0.1% by mass, Mo: not less than 0.3% and not more than 0.50% by mass, B: not less than 0.0005% and not more than 0.01% by mass, and a balance composed of Fe and inevitable impurities.

    摘要翻译: 可以以低成本制造具有优异延迟断裂特性的高强度钢,而不需要大量添加诸如Ni,Co或V的昂贵的合金元素。 包括马氏体相的比率为90%以上,原奥氏体晶粒直径为10μm以下的钢组织的钢,钢组织通过硬化然后在100℃回火至400℃ 包括C:大于0.30%且不大于0.50质量%的钢,Si:不大于1.0质量%,Mn:不大于1.5质量%,Ti:不大于0.1质量% Mo:0.3%以上且0.50质量%以下,B:0.0005%以上且0.01质量%以下,余量由Fe和不可避免的杂质构成。

    SPRING STEEL AND METHOD FOR MANUFACTURING THE SAME
    5.
    发明申请
    SPRING STEEL AND METHOD FOR MANUFACTURING THE SAME 有权
    弹簧钢及其制造方法

    公开(公告)号:US20130048158A1

    公开(公告)日:2013-02-28

    申请号:US13638375

    申请日:2011-02-28

    摘要: Disclosed is high strength spring steel that can limit the depth of pitting occurring when corroded and therefore possesses high strength as well as excellent pitting corrosion resistance and corrosion fatigue property, with a composition containing: C: greater than 0.35 mass % and less than 0.50 mass %; Si: greater than L75 mass % and less than or equal to 3.00 mass %; Mn: 0.2 mass % to 1.0 mass %; Cr: 0.01 mass % to 0.04 mass %; P: 0.025 mass % or less; S: 0.025 mass % or less; Mo: 0.1 mass % to 1.0 mass %; and 0: 0.0015 mass % or less, under a condition that a PC value calculated by PC=4.2×([C]+[Mn])+0.1×(1/[Si]+1/[Mo])+20.3×[Cr]+0.001×(1/[N]) is greater than 3.3 and equal to or less than 8.0. Also disclosed is a preferred method for manufacturing the same.

    摘要翻译: 公开了一种高强度弹簧钢,其可以限制腐蚀发生的点蚀深度,因此具有高强度以及优异的耐点腐蚀性和耐腐蚀疲劳性能,组合物含有:C:大于0.35质量%且小于0.50质量% %; Si:大于L75质量%且小于等于3.00质量%; Mn:0.2质量%〜1.0质量% Cr:0.01质量%〜0.04质量% P:0.025质量%以下; S:0.025质量%以下; Mo:0.1质量%〜1.0质量% 在[PC] = 4.2×([C] + [Mn])+ 0.1×(1 / [Si] + 1 / [Mo])+ 20.3× [Cr] + 0.001×(1 / [N])大于3.3且等于或小于8.0。 还公开了其制造方法。

    Hot forging facility
    6.
    发明授权
    Hot forging facility 有权
    热锻设备

    公开(公告)号:US07827842B2

    公开(公告)日:2010-11-09

    申请号:US11921320

    申请日:2006-06-05

    IPC分类号: B21D37/16

    摘要: A hot forging facility enabling the manufacture of a hot forged product excellent in fatigue properties and cold workability is provided. A heating furnace for heating a steel material and a hot forging apparatus for performing forging of the heated steel material are sequentially arranged on a transport line. A partially cooling apparatus/apparatuses for partially cooling a forged product after hot forging is provided on an exit side of the hot forging apparatus.

    摘要翻译: 提供了一种能够制造疲劳性能和冷加工性优异的热锻产品的热锻设备。 用于加热钢材的加热炉和用于进行加热钢材锻造的热锻设备依次布置在输送线上。 在热锻设备的出口侧设置用于在热锻后部分冷却锻造产品的部分冷却装置/设备。