公开(公告)号：US08192565B2

公开(公告)日：2012-06-05

申请号：US12665228

申请日：2008-06-23

申请人： Tomokazu Masuda ,  Takehiro Tsuchida ,  Masaki Shimamoto ,  Motohiro Horiguchi ,  Shinsuke Masuda ,  Koichi Akazawa ,  Shogo Murakami ,  Mutsuhisa Nagahama ,  Hiroshi Yaguchi ,  Koichi Sakamoto

发明人： Tomokazu Masuda ,  Takehiro Tsuchida ,  Masaki Shimamoto ,  Motohiro Horiguchi ,  Shinsuke Masuda ,  Koichi Akazawa ,  Shogo Murakami ,  Mutsuhisa Nagahama ,  Hiroshi Yaguchi ,  Koichi Sakamoto

IPC分类号： C21D6/00

CPC分类号： C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/22

摘要： The present invention provides a steel for machine and structural use which is capable of maintaining mechanical characteristics such as strength by reducing a S content as well as of exhibiting excellent machinability (particularly tool life) in intermittent cutting (such as hobbing) with the high speed tool, and a method useful for producing the steel for machine and structural use. The steel for machine and structural use according to the invention secures 0.002% or more of solute N in the steel and has a chemical composition which is appropriately adjusted and satisfies a relationship of the following expression (1): (0.1×[Cr]+[Al])/[O]≧150 . . . (1), in which [Cr], [Al], and [0] represent a Cr content (mass %), an Al content (mass %), and an O content (mass %), respectively.

摘要翻译： 本发明提供一种用于机械和结构用途的钢，其能够通过降低S含量以及在间歇切割（例如滚轧）中以高速度显示优异的机械加工性（特别是工具寿命）来保持机械特性，例如强度 工具和用于生产机器和结构用钢的方法。 根据本发明的机械和结构用钢，确保了钢中的溶质N的0.002％以上，并且具有适当调整的化学组成，并满足下述式（1）的关系：（0.1×[Cr] + [Al]）/ [O]≥150。 。 。 （1）中，[Cr]，[Al]和[0]分别表示Cr含量（质量％），Al含量（质量％）和O含量（质量％）。

公开(公告)号：US20100193090A1

公开(公告)日：2010-08-05

申请号：US12665228

申请日：2008-06-23

申请人： Tomokazu Masuda ,  Takehiro Tsuchida ,  Masaki Shimamoto ,  Motohiro Horiguchi ,  Shinsuke Masuda ,  Koichi Akazawa ,  Shogo Murakami ,  Mutsuhisa Nagahama ,  Hiroshi Yaguchi ,  Koichi Sakamoto

发明人： Tomokazu Masuda ,  Takehiro Tsuchida ,  Masaki Shimamoto ,  Motohiro Horiguchi ,  Shinsuke Masuda ,  Koichi Akazawa ,  Shogo Murakami ,  Mutsuhisa Nagahama ,  Hiroshi Yaguchi ,  Koichi Sakamoto

IPC分类号： C21D6/00 ,  C22C38/00 ,  C22C38/22 ,  C22C38/20

CPC分类号： C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/22

摘要： The present invention provides a steel for machine and structural use which is capable of maintaining mechanical characteristics such as strength by reducing a S content as well as of exhibiting excellent machinability (particularly tool life) in intermittent cutting (such as hobbing) with the high speed tool, and a method useful for producing the steel for machine and structural use. The steel for machine and structural use according to the invention secures 0.002% or more of solute N in the steel and has a chemical composition which is appropriately adjusted and satisfies a relationship of the following expression (1): (0.1×[Cr]+[Al])/[O]≧150 . . . (1), in which [Cr], [Al], and [0] represent a Cr content (mass %), an Al content (mass %), and an O content (mass %), respectively.

摘要翻译： 本发明提供一种用于机械和结构用途的钢，其能够通过降低S含量以及在间歇切割（例如滚轧）中以高速度显示优异的机械加工性（特别是工具寿命）来保持机械特性，例如强度 工具和用于生产机器和结构用钢的方法。 根据本发明的机械和结构用钢，确保了钢中的溶质N的0.002％以上，并且具有适当调整的化学组成，并满足下述式（1）的关系：（0.1×[Cr] + [Al]）/ [O]≥150。 。 。 （1）中，[Cr]，[Al]和[0]分别表示Cr含量（质量％），Al含量（质量％）和O含量（质量％）。

公开(公告)号：US08273292B2

公开(公告)日：2012-09-25

申请号：US12809107

申请日：2009-01-20

申请人： Koichi Sakamoto ,  Motohiro Horiguchi ,  Shogo Murakami ,  Hiroshi Yaguchi ,  Shinsuke Masuda ,  Koichi Akazawa

发明人： Koichi Sakamoto ,  Motohiro Horiguchi ,  Shogo Murakami ,  Hiroshi Yaguchi ,  Shinsuke Masuda ,  Koichi Akazawa

IPC分类号： C22C38/18

CPC分类号： C21C7/064 ,  C21C7/06 ,  C22C1/002 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28

摘要： The present invention provides a steel for machine and structural use which sustains mechanical properties such as strength by reducing S content, and exerts excellent machinability (in particular, tool life) in both of intermittent cutting with HSS tools and continuous cutting with carbide tools. The invention relates to a steel for machine and structural use which contains an oxide inclusion containing, wherein a total mass of an average composition of the oxide inclusions is 100%: CaO: 10 to 55 mass %; SiO2: 20 to 70 mass %; Al2O3: more than 0 and 35 mass % or less; MgO: more than 0 and 20 mass % or less; MnO: more than 0 and 5 mass % or less; and one or more members selected from the group consisting of Li2O, Na2O, K2O, BaO, SrO and TiO2: 0.5 to 20 mass % in total.

摘要翻译： 本发明提供一种用于机械和结构用途的钢，其通过降低S含量而保持诸如强度的机械性能，并且在用HSS工具进行的间歇切削和用硬质合金工具的连续切削中都具有优异的机械加工性（特别是刀具寿命）。 本发明涉及一种含有氧化物夹杂物的机械和结构用钢，其中氧化物夹杂物的平​​均组成的总质量为100％：CaO：10〜55质量％ SiO 2：20〜70质量％ Al2O3：大于0和35质量％以下; MgO：大于等于0和20质量％ MnO：大于0和5质量％以下; 和选自Li 2 O，Na 2 O，K 2 O，BaO，SrO和TiO 2中的一种以上的成分总计为0.5〜20质量％。

公开(公告)号：US20110229363A1

公开(公告)日：2011-09-22

申请号：US12809107

申请日：2009-01-20

申请人： Koichi Sakamoto ,  Motohiro Horiguchi ,  Shogo Murakami ,  Hiroshi Yaguchi ,  Shinsuke Masuda ,  Koichi Akazawa

发明人： Koichi Sakamoto ,  Motohiro Horiguchi ,  Shogo Murakami ,  Hiroshi Yaguchi ,  Shinsuke Masuda ,  Koichi Akazawa

IPC分类号： C22C38/22

CPC分类号： C21C7/064 ,  C21C7/06 ,  C22C1/002 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28

摘要： The present invention provides a steel for machine and structural use which sustains mechanical properties such as strength by reducing S content, and exerts excellent machinability (in particular, tool life) in both of intermittent cutting with HSS tools and continuous cutting with carbide tools. The invention relates to a steel for machine and structural use which contains an oxide inclusion containing, wherein a total mass of an average composition of the oxide inclusions is 100%: CaO: 10 to 55 mass %; SiO2: 20 to 70 mass %; Al2O3: more than 0 and 35 mass % or less; MgO: more than 0 and 20 mass % or less; MnO: more than 0 and 5 mass % or less; and one or more members selected from the group consisting of Li2O, Na2O, K2O, BaO, SrO and TiO2: 0.5 to 20 mass % in total.

摘要翻译： 本发明提供一种用于机械和结构用途的钢，其通过降低S含量而保持诸如强度的机械性能，并且在用HSS工具进行的间歇切削和用硬质合金工具的连续切削中都具有优异的机械加工性（特别是刀具寿命）。 本发明涉及一种含有氧化物夹杂物的机械和结构用钢，其中氧化物夹杂物的平​​均组成的总质量为100％：CaO：10〜55质量％ SiO 2：20〜70质量％ Al2O3：大于0和35质量％以下; MgO：大于等于0和20质量％ MnO：大于0和5质量％以下; 和选自Li 2 O，Na 2 O，K 2 O，BaO，SrO和TiO 2中的一种以上的成分总计为0.5〜20质量％。

公开(公告)号：US06596227B2

公开(公告)日：2003-07-22

申请号：US09935583

申请日：2001-08-24

申请人： Yosuke Shindo ,  Hiroshi Yaguchi ,  Takehiro Tsuchida ,  Koichi Sakamoto ,  Masato Kaiso ,  Masami Somekawa ,  Ikuo Hoshikawa ,  Sei Kimura

发明人： Yosuke Shindo ,  Hiroshi Yaguchi ,  Takehiro Tsuchida ,  Koichi Sakamoto ,  Masato Kaiso ,  Masami Somekawa ,  Ikuo Hoshikawa ,  Sei Kimura

IPC分类号： C22C3660

CPC分类号： C22C38/60 ,  C21C7/0006 ,  C21C7/0645 ,  C22C38/002

摘要： A machine structure steel superior in chip disposability and mechanical properties which contains sulfide-type inclusions such that those particles of sulfide-type inclusions with major axes not shorter than 5 &mgr;m have an average aspect ratio not larger than 5.2 and which also contains coarse particles of sulfide-type inclusions such that the relation a/b≦0.25 is satisfied, where a denotes the number of particles of sulfide-type inclusions with major axes not shorter than 20 &mgr;m, and b denotes the number of particles of sulfide-type inclusions with major axes not shorter than 5 &mgr;m. The machine structure steel exhibits good chip disposability and mechanical properties despite its freedom from lead.

摘要翻译： 一种机械结构钢，具有优异的切屑可处理性和机械性能，其含有硫化物型夹杂物，使得长轴不小于5um的硫化物型夹杂物的平​​均纵横比不大于5.2，并且还含有 硫化物型夹杂物满足a / b <= 0.25的关系，其中a表示长轴不小于20um的硫化物型夹杂物的颗粒数，b表示硫化物型夹杂物的颗粒数 主轴不小于5马姆。 机器结构钢尽管不受铅的影响，但具有良好的切屑可处理性和机械性能。

公开(公告)号：US08052925B2

公开(公告)日：2011-11-08

申请号：US11997612

申请日：2006-09-07

申请人： Koichi Sakamoto ,  Hiroshi Yaguchi ,  Atsuhiko Yoshida ,  Goro Anan ,  Yoshiteru Fukuoka

发明人： Koichi Sakamoto ,  Hiroshi Yaguchi ,  Atsuhiko Yoshida ,  Goro Anan ,  Yoshiteru Fukuoka

IPC分类号： C22C38/60

CPC分类号： C22C38/002 ,  C21C7/06 ,  C21D8/0226 ,  C21D8/105 ,  C22C38/001 ,  C22C38/04 ,  C22C38/60

摘要： A low carbon resulfurized free-machining steel having a high machinability is provided. This steel comprises 0.02 to 0.15% by mass of C, up to 0.004% by mass (more than 0% by mass) of Si, 0.6 to 3% by mass of Mn, 0.02 to 0.2% by mass of P, 0.2 to 1% by mass of S, up to 0.005% by mass (more than 0%) of Al, 0.008 to 0.04% by mass of O, and 0.002 to 0.03% by mass of N; and the average oxygen concentration in the MnS in the steel is at least 0.4% by mass.

摘要翻译： 提供了具有高切削性的低碳脱硫自由加工钢。 该钢中，C：0.02〜0.15质量％，Si：0.004质量％（大于0质量％），Mn：0.6〜3质量％，P：0.02〜0.2质量％，0.2：1 以质量％计，Al：0.005质量％（大于0％），O：0.008〜0.04质量％，N：0.002〜0.03质量％ 钢中的MnS中的平均氧浓度为0.4质量％以上。

公开(公告)号：US20100104468A1

公开(公告)日：2010-04-29

申请号：US11997612

申请日：2006-09-07

申请人： Koichi Sakamoto ,  Hiroshi Yaguchi ,  Atsuhiko Yoshida ,  Goro Anan ,  Yoshiteru Fukuoka

发明人： Koichi Sakamoto ,  Hiroshi Yaguchi ,  Atsuhiko Yoshida ,  Goro Anan ,  Yoshiteru Fukuoka

IPC分类号： C22C38/60

CPC分类号： C22C38/002 ,  C21C7/06 ,  C21D8/0226 ,  C21D8/105 ,  C22C38/001 ,  C22C38/04 ,  C22C38/60

摘要： A low-carbon sulfur-containing free-cutting steel having excellent cuttability which contains 0.02-0.15 mass % C, NT up to 0.004 mass % Si (excluding 0 mass %), 0.6-3 mass % Mn, 0.02-0.2 mass % P, 0.2-1 mass % S, up to 0.005 mass % Al (excluding 0 mass %), 0.008-0.04 mass % 0, and 0.002-0.03 mass % N and in which the average oxygen concentration in the MnS is 0.4 mass % or higher.

摘要翻译： 含有0.02-0.15质量％C，NT至0.004质量％Si（不包括0质量％），0.6-3质量％Mn，0.02-0.2质量％P的优异的可切割性的低碳含硫自由切削钢P ，0.2〜1质量％的S，0.005质量％以下的Al（不含0质量％），0.008〜0.04质量％0，0.002〜0.03质量％N，MnS中的平均氧浓度为0.4质量％ 更高。

公开(公告)号：US07666350B2

公开(公告)日：2010-02-23

申请号：US10579798

申请日：2004-11-26

申请人： Hiroshi Yaguchi ,  Koichi Sakamoto ,  Tomoko Sugimura ,  Goro Anan ,  Katsuhiko Ozaki

发明人： Hiroshi Yaguchi ,  Koichi Sakamoto ,  Tomoko Sugimura ,  Goro Anan ,  Katsuhiko Ozaki

IPC分类号： C22C38/60 ,  C22C38/00

CPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/60

摘要： The present invention provides a low-carbon resulfurized free machining steel product excellent in machinability typified by finished surface roughness even though toxic Pb or special elements such as Bi or Te are not added, and a suitable production method thereof. A steel product has a specific composition, has contents of Mn and S satisfying the following conditions: 0.40≦Mn*S≦1.2 and Mn/S≧3.0, and contains a ferrite-pearlite structure as the metallographic structure, in which the average width (μm) of sulfide inclusions in the steel product is 2.8*(log d) or more, wherein d (mm) is the diameter of the steel product, and pro-eutectoid ferrite in the metallographic structure has a hardness HV of 133 to 150 or a difference in deformation resistance at a strain of 0.3 between 200° C. and 25° C. is 110 MPa or more and 200 MPa or less, the deformation resistances being determined in a compression test at a deformation rate of 0.3 mm/min.

摘要翻译： 本发明提供一种即使没有添加有毒的Pb或诸如Bi或Te的特殊元素的切削性能优异的低成本的无机硫化自由加工钢产品及其合适的制造方法。 钢产品具有特定的组成，Mn和S的含量满足以下条件：0.40＆nlE; Mn * S＆nlE; 1.2和Mn /S≥3.0，并且包含铁素体 - 珠光体结构作为金相组织，其中平均 钢产品中硫化物夹杂物的宽度（μm）为2.8 *（log d）以上，d（mm）为钢制品的直径，金相组织中的先共析铁素体的硬度HV为133〜 在200℃和25℃之间的应变为0.3时的变形阻力差为110MPa以上且200MPa以下，变形阻力在压缩试验中以0.3mm / 分钟

公开(公告)号：US20070044867A1

公开(公告)日：2007-03-01

申请号：US10579798

申请日：2004-11-26

申请人： Hiroshi Yaguchi ,  Koichi Sakamoto ,  Tomoko Sugimura ,  Goro Anan ,  Katsuhiko Ozaki

发明人： Hiroshi Yaguchi ,  Koichi Sakamoto ,  Tomoko Sugimura ,  Goro Anan ,  Katsuhiko Ozaki

IPC分类号： C22C38/60

CPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/60

摘要： The present invention provides a low-carbon resulfurized free machining steel product excellent in machinability typified by finished surface roughness even though toxic Pb or special elements such as Bi or Te are not added, and a suitable production method thereof. A steel product has a specific composition, has contents of Mn and S satisfying the following conditions: 0.40≦Mn*S≦1.2 and Mn/S≧3.0, and contains a ferrite-pearlite structure as the metallographic structure, in which the average width (μm) of sulfide inclusions in the steel product is 2.8*(log d) or more, wherein d (mm) is the diameter of the steel product, and pro-eutectoid ferrite in the metallographic structure has a hardness HV of 133 to 150 or a difference in deformation resistance at a strain of 0.3 between 200° C. and 25° C. is 110 MPa or more and 200 MPa or less, the deformation resistances being determined in a compression test at a deformation rate of 0.3 mm/min.

摘要翻译： 本发明提供一种即使没有添加有毒的Pb或诸如Bi或Te的特殊元素的切削性能优异的低成本的无机硫化自由加工钢产品及其合适的制造方法。 钢产品具有特定的组成，Mn和S的含量满足以下条件：0.40 <= Mn * S <= 1.2，Mn / S> = 3.0，并且含有铁素体 - 珠光体组织作为金相组织，其中 钢产品中硫化物夹杂物的平​​均宽度（mum）为2.8 *（log d）以上，d（mm）为钢制品的直径，金相组织中的原共析铁素体的硬度HV为 在200℃〜25℃的应变为0.3度的变形阻力差为110MPa以上且200MPa以下的变形阻力在变形率为0.3的压缩试验中求出， mm / min。

公开(公告)号：US08900381B2

公开(公告)日：2014-12-02

申请号：US12241593

申请日：2008-09-30

申请人： Tomoko Sugimura ,  Koichi Sakamoto ,  Atsuhiko Yoshida ,  Kei Masumoto

发明人： Tomoko Sugimura ,  Koichi Sakamoto ,  Atsuhiko Yoshida ,  Kei Masumoto

IPC分类号： C22C38/00 ,  C22C5/02 ,  C22C38/04 ,  C21D9/02 ,  C22C38/02 ,  C22C38/06 ,  C21D9/00

CPC分类号： C22C38/04 ,  C21D9/0075 ,  C21D9/02 ,  C21D2211/004 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06

摘要： Disclosed is a spring steel which contains, by mass, 1.2% or less C; 0.1% to 2% Mn; 0.2% to 3% Si; 0.0003% to 0.005% Al; to 8 ppm Li; 30 ppm or less (excluding 0 ppm) Ca; and 10 ppm or less (excluding 0 ppm) Mg. The steel contains oxide inclusions satisfying the following conditions (1) to (3) in a number of 1×10−4 or more per square millimeter: (1) containing a total of 80 percent by mass or more of Al2O3 and SiO2 based on the inclusion composition excluding Li2O; (2) having a ratio by mass of Al2O3 to SiO2 of from 1:4 to 2:3; and (3) containing lithium (Li). The spring steel gives a spring that exhibits superior fatigue properties without strict control of the average composition of inclusions.

摘要翻译： 公开了以质量计含有1.2％以下C的弹簧钢; 0.1％至2％Mn; 0.2％至3％的Si; 0.0003％至0.005％的Al; 至8ppm Li; 30ppm以下（不含0ppm）Ca; 和10ppm以下（不含0ppm）Mg。 钢含有满足以下条件（1）至（3）的氧化物夹杂物，其数量为每平方毫米1×10 -4以上：（1）基于以下的总和为80质量％以上的Al 2 O 3和SiO 2： 不含Li2O的夹杂物组成; （2）Al 2 O 3与SiO 2的质量比为1:4至2:3; 和（3）含有锂（Li）。 弹簧钢弹簧具有优异的疲劳性能，而不需要严格控制夹杂物的平​​均组成。