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公开(公告)号:US08137484B2
公开(公告)日:2012-03-20
申请号:US12288542
申请日:2008-10-20
申请人: Masayuki Hashimura , Atsushi Mizuno , Kenichiro Naito , Hiroshi Hagiwara , Kohichi Isobe , Hiroshi Hirata
发明人: Masayuki Hashimura , Atsushi Mizuno , Kenichiro Naito , Hiroshi Hagiwara , Kohichi Isobe , Hiroshi Hirata
CPC分类号: C22C38/001 , C21D2211/005 , C21D2211/009 , C22C38/002 , C22C38/04 , C22C38/60
摘要: The present invention provides steel superior in machinability comprised of, by wt %, C: 0.005 to 0.2%, Si: 0.001 to 0.5%, Mn: 0.2 to 3.0%, P: 0.001 to 0.2%, S: 0.03 to 1.0%, T.N: 0.002 to 0.02%, T.O: 0.0005 to 0.035%, and the balance of Fe and unavoidable impurities, said steel satisfying one or both of Mn/S in the steel being 1.2 to 2.8 or an area ratio of pearlite over a grain size of 1 μm in a microstructure of the steel being not more than 5%.
摘要翻译: 本发明提供了以C:0.005〜0.2%,Si:0.001〜0.5%,Mn:0.2〜3.0%,P:0.001〜0.2%,S:0.03〜1.0%,重量% TN:0.002〜0.02%,TO:0.0005〜0.035%,余量由Fe和不可避免的杂质构成,所述钢满足钢中Mn / S的一种或两种或1.2或2.8,或珠光体相对于晶粒尺寸的面积比 在钢的微观结构中为1μm以下,不超过5%。
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公开(公告)号:US20090050241A1
公开(公告)日:2009-02-26
申请号:US12288542
申请日:2008-10-20
申请人: Masayuki Hashimura , Atsushi Mizuno , Kenichiro Naito , Hiroshi Hagiwara , Kohichi Isobe , Hiroshi Hirata
发明人: Masayuki Hashimura , Atsushi Mizuno , Kenichiro Naito , Hiroshi Hagiwara , Kohichi Isobe , Hiroshi Hirata
IPC分类号: C21D6/00
CPC分类号: C22C38/001 , C21D2211/005 , C21D2211/009 , C22C38/002 , C22C38/04 , C22C38/60
摘要: The present invention provides steel superior in machinability comprised of, by wt %, C: 0.005 to 0.2%, Si: 0.001 to 0.5%, Mn: 0.2 to 3.0%, P: 0.001 to 0.2%, S: 0.03 to 1.0%, T.N: 0.002 to 0.02%, T.O: 0.0005 to 0.035%, and the balance of Fe and unavoidable impurities, said steel satisfying one or both of Mn/S in the steel being 1.2 to 2.8 or an area ratio of pearlite over a grain size of 1 μm in a microstructure of the steel being not more than 5%.
摘要翻译: 本发明提供了以C:0.005〜0.2%,Si:0.001〜0.5%,Mn:0.2〜3.0%,P:0.001〜0.2%,S:0.03〜1.0%,重量% TN:0.002〜0.02%,TO:0.0005〜0.035%,余量由Fe和不可避免的杂质构成,所述钢满足钢中Mn / S的一种或两种或1.2或2.8,或珠光体的晶粒面积比 1微米的钢的微观结构不大于5%。
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公开(公告)号:US20060013720A1
公开(公告)日:2006-01-19
申请号:US10534858
申请日:2003-11-14
申请人: Masayuki Hashimura , Atsushi Mizuno , Kenichiro Naito , Hiroshi Hagiwara , Kohichi Isobe , Hiroshi Hirata
发明人: Masayuki Hashimura , Atsushi Mizuno , Kenichiro Naito , Hiroshi Hagiwara , Kohichi Isobe , Hiroshi Hirata
IPC分类号: C22C38/04
CPC分类号: C22C38/001 , C21D2211/005 , C21D2211/009 , C22C38/002 , C22C38/04 , C22C38/60
摘要: The present invention provides steel superior in machinability comprised of, by wt %, C: 0.005 to 0.2%, Si: 0.001 to 0.5%, Mn: 0.2 to 3.0%, P: 0.001 to 0.2%, S: 0.03 to 1.0%, T.N: 0.002 to 0.02%, T.O: 0.0005 to 0.035%, and the balance of Fe and unavoidable impurities, said steel satisfying one or both of Mn/S in the steel being 1.2 to 2.8 or an area ratio of pearlite over a grain size of 1 μm in a microstructure of the steel being not more than 5%.
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公开(公告)号:US07488396B2
公开(公告)日:2009-02-10
申请号:US10534858
申请日:2003-11-14
申请人: Masayuki Hashimura , Atsushi Mizuno , Kenichiro Naito , Hiroshi Hagiwara , Kohichi Isobe , Hiroshi Hirata
发明人: Masayuki Hashimura , Atsushi Mizuno , Kenichiro Naito , Hiroshi Hagiwara , Kohichi Isobe , Hiroshi Hirata
CPC分类号: C22C38/001 , C21D2211/005 , C21D2211/009 , C22C38/002 , C22C38/04 , C22C38/60
摘要: The present invention provides steel superior in machinability comprised of, by wt %, C: 0.005 to 0.2%, Si: 0.001 to 0.5%, Mn: 0.2 to 3.0%, P: 0.001 to 0.2%, S: 0.03 to 1.0%, T.N: 0.002 to 0.02%, T.O: 0.0005 to 0.035%, and the balance of Fe and unavoidable impurities, said steel satisfying one or both of Mn/S in the steel being 1.2 to 2.8 or an area ratio of pearlite over a grain size of 1 μm in a microstructure of the steel being not more than 5%.
摘要翻译: 本发明提供了以C:0.005〜0.2%,Si:0.001〜0.5%,Mn:0.2〜3.0%,P:0.001〜0.2%,S:0.03〜1.0%,重量% TN:0.002〜0.02%,TO:0.0005〜0.035%,余量由Fe和不可避免的杂质构成,所述钢满足钢中Mn / S的一种或两种或1.2或2.8,或珠光体的晶粒面积比 1微米的钢的微观结构不大于5%。
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公开(公告)号:US07789974B2
公开(公告)日:2010-09-07
申请号:US10362651
申请日:2001-12-20
CPC分类号: B32B27/36 , B32B17/10018 , B32B17/10761 , B32B17/10788 , C21D2211/003 , C22C38/001 , C22C38/002 , C22C38/22 , C22C38/34 , Y10S148/908
摘要: The present invention provides a spring steel having both a high strength and a good coiling property after heat treatment, characterized by: containing, in mass, C: 0.4 to 1.2%, Si: 0.9 to 3.0%, Mn: 0.1 to 2.0%, P: 0.015% or less, S: 0.015% or less, Cr: 2.5% or less, and N: 0.001 to 0.015%, with the balance consisting of Fe and unavoidable impurities; and, in the microstructure of the steel after hot rolling, the density of globular cementite carbides 0.2 to 3 μm in circle-equivalent diameter being 0.5 piece/μm2 or less and the density of globular cementite carbides over 3 μm in circle-equivalent diameter being 0.005 piece/μm2 or less.
摘要翻译: 本发明提供一种在热处理后具有高强度和良好卷取性能的弹簧钢,其特征在于:以质量计含有C:0.4〜1.2%,Si:0.9〜3.0%,Mn:0.1〜2.0% P:0.015%以下,S:0.015%以下,Cr:2.5%以下,N:0.001〜0.015%,余量由Fe和不可避免的杂质构成。 在热轧后的钢的微观组织中,圆当量直径为0.2〜3μm的球状渗碳体碳化物的密度为0.5片/μm2以下,圆当量直径为3μm以上的球状渗碳体碳化物的密度为 0.005片/μm2以下。
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公开(公告)号:US20090092516A1
公开(公告)日:2009-04-09
申请号:US11919735
申请日:2007-03-29
CPC分类号: C21D9/52 , C21D1/18 , C21D2211/008 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/34 , C22C38/60 , Y02P10/212
摘要: The present invention provides spring use heat treated steel which is cold coiled, can achieve both sufficient atmospheric strength and coilability, has a tensile strength of 2000 MPa or more, and can improve the performance as a spring by heat treatment after spring fabrication, that is, high strength spring-use heat treated steel characterized by containing, by mass %, C: 0.45 to 0.9%, Si: 1.7 to 3.0%, and Mn: 0.1 to 2.0%, restricting N: to 0.007% or less, having a balance of Fe and unavoidable impurities, and satisfying, in terms of the analyzed value of the extracted residue after heat treatment, [amount of Fe in residue on 0.2 μm filter/[steel electrolysis amount]×100≦1.1.
摘要翻译: 本发明提供一种冷卷绕弹簧使用的热处理钢,能够实现充分的大气强度和线性化,拉伸强度为2000MPa以上,并且可以通过弹簧加工后的热处理提高作为弹簧的性能,即 特征在于,以质量%计含有C:0.45〜0.9%,Si:1.7〜3.0%,Mn:0.1〜2.0%的高强度弹簧用热处理钢,其特征在于,将N:0.007%以下, Fe和不可避免的杂质的平衡,从热处理后的提取残渣的分析值来说,[0.2mum过滤器上残留物中的Fe量[[钢电解量]×100 <= 1.1]。
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公开(公告)号:US10131973B2
公开(公告)日:2018-11-20
申请号:US11630222
申请日:2005-11-30
摘要: The present invention provides spring steel used for spring steel wire achieving both high strength and cold coilability and spring steel wire, that is, spring steel containing, by mass %, C: 0.45 to 0.70%, Si: 1.0 to 3.0%, Mn: 0.05 to 2.0%, P: 0.015% or less, S: 0.015% or less, N: 0.0015 to 0.0200%, and t-O: 0.0002 to 0.01 and further limiting Al≤0.01% and Ti≤0.003%. Further, it is characterized by satisfying the following regarding the cementite-based spherical carbides present at an observed plane, an occupied area ratio of grains with a circle equivalent diameter of 0.2 μm or more of 7% or less, a density of presence of grains with a circle equivalent diameter of 0.2 to 3 μm of 1/μm2 or less, and a density of presence of grains with a circle equivalent diameter 3 μm or more of 0.001/μm2 or less, having an prior austenite grain size number of #10 or higher and a residual austenite of 15 mass % or less, and having an area ratio of poor regions with a small density of presence of cementite-based carbides of a circle equivalent diameter of 2 μm or more of 3% or less.
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公开(公告)号:US20090205753A1
公开(公告)日:2009-08-20
申请号:US11918997
申请日:2007-03-29
IPC分类号: C22C38/02
CPC分类号: C21D9/525 , C21D1/25 , C21D2211/008 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/60 , Y02P10/212
摘要: The present invention provides spring-use heat treated steel which is cold coiled, can achieve both sufficient atmospheric strength and coiling workability, has a tensile strength of 2000 MPa or more, and can improve the performance as a spring by heat treatment after shaping the spring, that is, heat treated steel for high strength spring containing, by mass %, C: 0.45 to 0.9%, Si: 1.0 to 3.0%, Mn: 0.1 to 2.0%, V: over 0.1 to 1.0%, N: limited to 0.007% or less, and a balance of Fe and unavoidable impurities, and satisfying, in terms of the analyzed value of the extracted residue after heat treatment, [amount of V in filtrate filtered by 0.2 μm filter (mass %)]≧[amount of V in steel (mass %)]×0.4.
摘要翻译: 本发明提供一种冷卷绕弹簧用热处理钢,能够获得足够的大气强度和卷取加工性,拉伸强度为2000MPa以上,并且能够在成形弹簧后通过热处理提高作为弹簧的性能 即,以质量%计含有C:0.45〜0.9%,Si:1.0〜3.0%,Mn:0.1〜2.0%,V:0.1〜1.0%以下的高强度弹簧用热处理钢,N:限于 0.007%以下,余量由Fe和不可避免的杂质构成,从热处理后的提取残渣的分析值来看,[0.2μm过滤器过滤的滤液中的V量(质量%)] = [ 钢中V含量(质量%)]×0.4。
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公开(公告)号:US06338763B1
公开(公告)日:2002-01-15
申请号:US09407103
申请日:1999-09-27
申请人: Masayuki Hashimura , Hiroshi Hagiwara , Takanari Miyaki , Hiroaki Hayashi , Shoichi Suzuki , Ikuo Ochiai
发明人: Masayuki Hashimura , Hiroshi Hagiwara , Takanari Miyaki , Hiroaki Hayashi , Shoichi Suzuki , Ikuo Ochiai
IPC分类号: C21D902
摘要: This invention provides an oil-tempered wire having high strength (tensile strength of not less than 1960 MPa) and excellent workability and specifically provides a steel wire for high-strength springs comprising as steel components, in weight percent, C 0.4-0.7% Si 1.2-2.5% Mn 0.1-0.5% Cr 0.4-2.0% Al 0.0001-0.005%, and being limited to P not more than 0.015% and S not more than 0.015%, the balance being Fe and unavoidable impurities, the steel wire having no nonmetallic inclusions of a size greater than 15 &mgr;m, a tensile strength of not less than 1960 MPa, and a yield ratio (&sgr;0.2/&sgr;B) of not less than 0.8 and not greater than 0.9 or a yield ratio (&sgr;0.2/&sgr;B) of not less than 0.8 and an amount of residual austenite of not greater than 6%. This invention also provides a method of producing the steel wire.
摘要翻译: 本发明提供一种具有高强度(抗拉强度不低于1960MPa)和优异的加工性的油回火丝,具体提供了一种用于高强度弹簧的钢丝,其包括重量百分比,余量为Fe和不可避免的钢组分 杂质,钢丝不具有大于15μm的非金属夹杂物,拉伸强度不小于1960MPa,屈服比(σ0.2/σB)不小于0.8且不大于0.9或不大于0.9 屈服比(σ0.2/σB)不小于0.8,残余奥氏体量不大于6%。 本发明还提供一种钢丝的制造方法。
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公开(公告)号:US08845825B2
公开(公告)日:2014-09-30
申请号:US11919735
申请日:2007-03-29
IPC分类号: C22C38/08 , C23C8/20 , C23C8/24 , C23C8/00 , C23C8/26 , C23C8/50 , C23C22/00 , C22C38/16 , C22C33/00 , C22C38/60 , C22C38/02 , C22C38/18 , C21D9/52 , C22C38/34 , C22C38/04 , C22C38/00
CPC分类号: C21D9/52 , C21D1/18 , C21D2211/008 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/34 , C22C38/60 , Y02P10/212
摘要: The present invention provides spring use heat treated steel which is cold coiled, can achieve both sufficient atmospheric strength and coilability, has a tensile strength of 2000 MPa or more, and can improve the performance as a spring by heat treatment after spring fabrication, that is, high strength spring-use heat treated steel characterized by containing, by mass %, C: 0.45 to 0.9%, Si: 1.7 to 3.0%, and Mn: 0.1 to 2.0%, restricting N: to 0.007% or less, having a balance of Fe and unavoidable impurities, and satisfying, in terms of the analyzed value of the extracted residue after heat treatment, [amount of Fe in residue on 0.2 μm filter/[steel electrolysis amount]×100≦1.1.
摘要翻译: 本发明提供一种冷卷绕弹簧使用的热处理钢,能够实现充分的大气强度和线性化,拉伸强度为2000MPa以上,并且可以通过弹簧加工后的热处理提高作为弹簧的性能,即 特征在于,以质量%计含有C:0.45〜0.9%,Si:1.7〜3.0%,Mn:0.1〜2.0%的高强度弹簧用热处理钢,其特征在于,将N:0.007%以下, 平衡Fe和不可避免的杂质,并且,对于热处理后的提取残渣的分析值来说,[0.2μm过滤器上残渣中的Fe量[[钢电解量]×100&nlE; 1.1]。
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