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1. 发明专利

JP2005307241A High-sulfur free-cutting steel 审中-公开
标题翻译：高硫自由切割钢
公开(公告)号：JP2005307241A
公开(公告)日：2005-11-04
申请号：JP2004122929
申请日：2004-04-19
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： HATTORI ATSUSHI , KANO TAKASHI
IPC分类号： C21C7/00 , C21C7/04 , C21C7/06 , C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a high-sulfur free-cutting steel which contains much S but a controlled amount of coarse sulfide and hard carbosulfide, consequently has adequate machinability, and is less liable to cause inconvenience like the lowering of surface quality, reduction in hermeticity, the shortening of the tool life and the low precision of a finish-machined surface, originating from the falling of inclusions.
SOLUTION: The high-sulfur free-cutting steel comprises, by mass%, 0.20% or less C, 0.05-1.50% Si, 0.50-3.0% Mn, 0.02-0.40% P, 0.4-1.0% S, 0.0050-0.0150% O and the balance Fe with unavoidable impurities.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供含有大量S但受控量的粗硫化物和硬质硫化碳的高硫自由切削钢，因此具有足够的机械加工性，并且不太容易引起诸如表面降低等不便质量下降，气密性降低，刀具寿命缩短，精加工表面精度低，源于夹杂物的下落。解决方案：高硫自由切削钢以质量％计含有0.20％以下的C，0.05-1.50％的Si，0.50-3.0％的Mn，0.02-0.40％的P，0.4-1.0％的S，0.0050 -0.0150％O，余量为Fe与不可避免的杂质。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2005154886A Free-cutting steel and fuel injection system component using the same 有权
标题翻译：使用其自由切割钢和燃油喷射系统组件
公开(公告)号：JP2005154886A
公开(公告)日：2005-06-16
申请号：JP2004119532
申请日：2004-04-14
申请人： Daido Steel Co Ltd , Denso Corp , 大同特殊鋼株式会社 , 株式会社デンソー
发明人： KANO TAKASHI , SAKOMA YASUHIRO , ASAOKA JUNYA , SHIMIZU MAKI , MORI KATSUMI , ENDO HISASHI
IPC分类号： C21C7/00 , C22C33/04 , C22C38/00 , C22C38/14 , C22C38/18 , C22C38/28 , C22C38/38
CPC分类号： C22C38/22 , C22C38/02 , C22C38/04 , F02M55/025 , F02M61/168 , F02M2200/8069
摘要： PROBLEM TO BE SOLVED: To provide a free-cutting steel capable of suppressing production of coarse inclusions, and having a high fatigue strength and an excellent machinability.
SOLUTION: The free-cutting steel contains, by mass %, 0.1 to 0.5% C, 0.05 to 2.5% Si, 0.1 to 3.5% Mn, 0.0005 to 0.004% S, 0.01 to 0.06% Al, 0.003 to 0.01% Ti, ≤0.0015% 0, 0.003 to 0.01% N, 0.015 to 0.025% Bi, and the balance of Fe and inevitable impurities, wherein the formula (1) below is satisfied: -4.8≤log(([N]-0.0015)×[Ti]
0.98 )≤-4.3...(1).
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够抑制粗大夹杂物的生产，并且具有高的疲劳强度和优异的机械加工性的自由切削钢。解决方案：切削钢以质量％计含有0.1〜0.5％的C，0.05〜2.5％的Si，0.1〜3.5％的Mn，0.0005〜0.004％的S，0.01〜0.06％的Al，0.003〜0.01％ Ti，≤0.0015％0，0.003〜0.01％N，0.015〜0.025％Bi，余量为Fe和不可避免的杂质，其中满足下式（1）：-4.8≤log（（[N] -0.0015） ×钛[Ti] 0.98 ）≤-4.3 ...（1）。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2003300156A Grinding performance evaluating method 审中-公开
标题翻译：研磨性能评估方法
公开(公告)号：JP2003300156A
公开(公告)日：2003-10-21
申请号：JP2002106670
申请日：2002-04-09
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： KANO TAKASHI , KUREBAYASHI YUTAKA
IPC分类号： B24B49/16 , B24B49/18 , B24B53/00
摘要： PROBLEM TO BE SOLVED: To provide a grinding performance evaluating method capable of exactly and simply evaluating the grinding performance of a workpiece having a curved surface-shaped ground surface.
SOLUTION: After forming a cylindrical surface 4b having the same curvature as a grinding wheel on a tip end surface of a test piece 4 by a cylindrical grinding wheel 2 equipped to a main shaft of a general-purpose lathe, the cylindrical grinding wheel is subjected to dressing. Then, while grinding of the test piece cylindrical surface by the cylindrical grinding wheel is repeated, grinding resistance added on the cylindrical grinding wheel is measured by a dynamometer. On the basis of the total number of grinding execution until the grinding resistance exceeds a predetermined value, the grinding performance of the test piece is evaluated. On the basis of the evaluated result about a plurality of test pieces structured from different materials, a structuring material of the workpiece having the grinding performance can be selected.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种能够准确且简单地评价具有曲面状地面的工件的研磨性能的磨削性能评价方法。解决方案：通过装配到通用车床主轴的圆柱形砂轮2，在试件4的前端面上形成具有与砂轮相同曲率的圆柱形表面4b，圆柱形磨削轮子进行敷料。然后，通过圆柱形砂轮重复对试件圆柱形表面的磨削，通过测力计测量加在圆柱形砂轮上的耐磨性。基于研磨执行的总数，直到研磨阻力超过预定值，评估试验片的研磨性能。基于关于由不同材料构成的多个测试件的评估结果，可以选择具有研磨性能的工件的结构材料。版权所有（C）2004，JPO

4. 发明专利

JP2010180473A Cracking connecting rod and method for producing the same 有权
标题翻译：破碎连接杆及其制造方法
公开(公告)号：JP2010180473A
公开(公告)日：2010-08-19
申请号：JP2009027755
申请日：2009-02-09
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： MIYAZAKI TAKAHIRO , NAKAJIMA TOMOYUKI , HOBO MAKOTO , KATO SHINICHIRO , KANO TAKASHI , YOSHIDA HIROAKI , FUJIWARA MASANAO , TSUDA MASASHI , YAMAGUCHI KATSUYA
IPC分类号： C22C38/00 , B21J5/00 , B21J5/02 , B21K1/14 , C21D8/00 , C22C38/60 , F16C7/02
摘要： PROBLEM TO BE SOLVED: To provide a cracking connecting rod made of a ferrite-pearlite type non-heattreated steel, and having a high fatigue limit, and to provide a method for producing the same.
SOLUTION: The cracking connecting rod is composed of a ferrite-pearlite type non-heattreated steel comprising essential additional elements and optionally comprisable additional elements, and in which 0.20 to 0.60% C is comprised. The cracking connecting rod is at least provided with: a large edge part and a small edge part respectively engaged with a crankshaft and a piston; and a rod part connecting them and subjected to coining treatment. To this, C, N, Ti, Mn and Cr are added as the essential additional elements, and Si, P, S, V, Pb, Te, Ca and Bi are added as the optional additional elements. In these additional elements, Mn is added, by mass, in the range of 0.30 to 1.50% and Cr is added in the range of 0.05 to 1.00%. The connecting rod further comprises N in the range of 0.005 to 0.03% and also Ti in the range of ≤0.20% so as to satisfy Ti≥3.4N+0.02. The connecting rod further comprises ≤2.0% Si, ≤0.2% P, ≤0.2% S, ≤0.50% V, ≤0.30% Pb, ≤0.3% Te, ≤0.01% Ca and ≤0.30% Bi, and in which the 0.2% proof stress in the rod part is >700 MPa, and further, the 0.2% proof stress in the large edge part is
摘要翻译：要解决的问题：提供一种由铁素体 - 珠光体型非热处理钢制成并具有高疲劳极限的开裂连杆，并提供其制造方法。解决方案：裂解连杆由铁素体 - 珠光体型非加热处理钢构成，其包括必需的附加元素和任选的可包含的附加元素，并且其中包含0.20至0.60％的C。破裂连杆至少设有：分别与曲轴和活塞接合的大边缘部分和小边缘部分; 和连接它们并进行压印处理的杆部分。添加C，N，Ti，Mn和Cr作为必需的附加元素，并且添加Si，P，S，V，Pb，Te，Ca和Bi作为任选的附加元素。在这些附加元素中，Mn以质量计添加在0.30〜1.50％的范围内，Cr的添加量为0.05〜1.00％。连接杆还包括在0.005-0.03％的范围内的N和≤0.20％的Ti，以满足Ti≥3.4N+ 0.02。连杆还包括≤2.0％Si，≤0.2％P，≤0.2％S，≤0.50％V，≤0.30％Pb，≤0.3％Te，≤0.01％Ca和≤0.30％Bi，其中0.2 杆部的耐屈曲应力> 700MPa，大边缘部的0.2％的屈服应力<650MPa。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2007092102A Case-hardening steel and carburizing part using the same (especially differential gear) 审中-公开
标题翻译：使用其的硬化钢和加固部分（特殊差速器）
公开(公告)号：JP2007092102A
公开(公告)日：2007-04-12
申请号：JP2005280838
申请日：2005-09-27
申请人： Daido Steel Co Ltd , Nissan Motor Co Ltd , 大同特殊鋼株式会社 , 日産自動車株式会社
发明人： MIURA NAOMI , HAYASHI TAKAO , OKADA YOSHIO , MIYAZAKI TAKAHIRO , HATTORI ATSUSHI , KANO TAKASHI
IPC分类号： C22C38/00 , C21D1/06 , C21D6/00 , C21D9/32 , C22C38/32 , C23C8/22 , F16H55/06
摘要： PROBLEM TO BE SOLVED: To provide a case-hardening steel provided with excellent impact fatigue strength and a carburized part using the same (especially a differential gear). SOLUTION: This case-hardening steel is composed, by mass, of 0.10-0.30% C, ≤0.10% Si, 0.3-0.85% Mn, 0.002-0.015% P, ≤0.015% S, 0.30-0.65% Cr, 0.10-1.00% Mo, 0.0005-0.0035% B, 0.015-0.100% Nb, 0.01-0.1% Al and the balance Fe with inevitable impurities, and satisfies the formula (1); 2.0≤10Si(%)+Cr(%)+Mn(%)+Mo(%)≤30. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异的冲击疲劳强度的表面硬化钢和使用其的渗碳部件（特别是差速齿轮）。 <硬质钢>该硬质合金钢按质量计含有0.10〜0.30％的C，≤0.10％的Si，0.3-0.85％的Mn，0.002-0.015％的P，≤0.015％的S，0.30-0.65％的Cr ，0.10-1.00％Mo，0.0005-0.0035％B，0.015-0.100％Nb，0.01-0.1％Al，余量为Fe和不可避免的杂质，并满足式（1）; 2.0≤10Si（％）+的Cr（％）+的Mn（％）+的Mo（％）≤30。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2004068128A Steel for machine structural use having excellent chip crushability 审中-公开
公开(公告)号：JP2004068128A
公开(公告)日：2004-03-04
申请号：JP2002232425
申请日：2002-08-09
申请人： Daido Steel Co Ltd , Honda Motor Co Ltd , 大同特殊鋼株式会社 , 本田技研工業株式会社
发明人： HAYAISHI MASAKAZU , KANO TAKASHI , YAMADA NORIYUKI , SHIIKI KATSUAKI
IPC分类号： C22C38/00 , C22C38/02 , C22C38/04 , C22C38/14 , C22C38/18 , C22C38/22 , C22C38/60
CPC分类号： C22C38/002 , C21D6/005 , C21D6/008 , C21D2211/004 , C21D2261/00 , C22C38/02 , C22C38/04 , C22C38/14 , C22C38/18 , C22C38/22 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide free cutting steel which has excellent chip crushability in steel for machine structural use.
SOLUTION: The steel has an alloy composition comprising, by weight, 0.05 to 0.8% C, 0.01 to 2.5% Si, 0.1 to 3.5% Mn and 0.01 to 0.2% S, and comprising 0.0005 to 0.02% Ca or Ca+Mg, 0.002 to 0.010% Ti and/or 0.002 to 0.025% Zr and 0.0005 to 0.010% O, and the balance Fe with inevitable impurities. Then, MnS inclusions with a mean particle diameter of ≥1.0 μm are present by ≥5 pieces/mm
2 per 0.01% of the S content. In a microscopic field, the occupancy area of Ca-containing sulfide inclusions satisfying the condition of (area[μm
2 ]/aspect ratio)≥10 and also comprising ≥1.0 wt.% Ca lies within the range of 15 to 40% in the occupancy area of all sulfide inclusions.
COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2003055735A Free-cutting steel for machine structure having excellent machinability by super-hardened tool 有权
标题翻译：超硬工具机械结构优质自由切割钢
公开(公告)号：JP2003055735A
公开(公告)日：2003-02-26
申请号：JP2001356402
申请日：2001-11-21
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： KANO TAKASHI , KUREBAYASHI YUTAKA
IPC分类号： C21C7/00 , C21C7/04 , C21C7/10 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/22 , C22C38/60
CPC分类号： C22C38/002 , C22C38/02 , C22C38/04 , C22C38/22 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide free-cutting steel for a machine structure which can always obtain desired machinability, in particular, machinability by a super-hardened tool, and a production method therefor.
SOLUTION: An alloy having a composition containing, by weight, 0.05 to 0.8% C, 0.01 to 2.5% Si, 0.1 to 3.5% Mn and 0.0005 to 0.01% O, and the balance Fe with inevitable impurities is melted by refining similarly to that in the ordinary production of steel for a machine structure. In this case, S, Al and Ca are added so that the compositional ranges of 0.01 to 0.2% S, 0.001 to 0.020% Al and 0.0005 to 0.02% Ca, and the following conditions of [S]/[O]: 8 to 40, [Ca]×[S]: 1×10
-5 to 1×10
-3 , [Ca]/[S]: 0.01 to 20, and [Al]: 0.001 to 0.020% are satisfied, with which the steel in which the occupancy ratio of sulfide inclusions containing ≥1.0% Ca and present in contact with oxide inclusions containing 8 to 62% CaO is ≥2.0×10
-4 mm
2 per the field area of 3.5 mm
2 is obtained.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种能够始终获得期望的机加工性，特别是通过超硬工具的机械加工性的机器结构的自由切削钢及其制造方法。解决方案：一种合金，其组合物含有0.05-0.8％的C，0.01-2.5％的Si，0.1到3.5％的Mn和0.0005到0.01％的O，余量的Fe与不可避免的杂质通过类似于在普通钢材生产中用于机器结构。在这种情况下，添加S，Al和Ca，使得组成范围为0.01〜0.2％S，0.001〜0.020％Al，0.0005〜0.02％Ca，以及[S] / [O]：8〜 40，[Ca]×[S]：1×10 -5〜1×10 -3，[Ca] / [S]：0.01〜20，[Al]：0.001〜0.020％其中含有> = 1.0％Ca并且与含有8至62％CaO的氧化物夹杂物接触的硫化物夹杂物的占有率的钢的面积> = 2.0×10 -4 mm 2 3.5mm 2。

8. 发明专利

JP2009057623A Carburized high rigidity steel and component for machine structure using the same 有权
标题翻译：加工高刚性钢和使用该机械结构的组件
公开(公告)号：JP2009057623A
公开(公告)日：2009-03-19
申请号：JP2007228157
申请日：2007-09-03
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： HAYASHI HIDESATO , KANO TAKASHI
IPC分类号： C22C38/00 , C21D1/06 , C21D1/76 , C21D6/00 , C21D9/28 , C21D9/32 , C22C38/24 , C22C38/32 , C23C8/22 , C23C8/34
CPC分类号： Y02P10/212
摘要： PROBLEM TO BE SOLVED: To provide carburized high rigidity steel which is prevented from being deformed or damaged even when a large torque is applied, and has excellent impact strength, and in which lowering of the fatigue strength caused by the deformation and the damage can be suppressed even when the large torque is continuously applied, and a component for machine structure. SOLUTION: The carburized high rigidity steel is obtained such that a carburized layer is formed on the surface of the steel material having a composition containing, by mass%, 0.40-0.70% C, 0.10-0.50% Si, 0.10-1.00% Mn, 1.00-2.00% Cr, 2.00-6.00% Mo and 0.30-1.50% V and the balance Fe with inevitable impurities. Carbon concentration Xc on the surface of the carburized layer is 0.6≤Xc≤0.7 mass%, and a carburizing distance δc is 0.8 mm≤δc≤1.2 mm, a segregation ratio (a) of Mo is 1.00≤a≤1.30 and a remaining γ quantity in the steel material is ≤10 vol%. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供即使施加大的扭矩也防止变形或损坏的渗碳高刚性钢，并且具有优异的冲击强度，并且其中由变形引起的疲劳强度的降低和即使连续施加大扭矩也能够抑制损伤，也可以抑制机械构造的部件。解决方案：获得渗碳高刚性钢，使得在具有以质量％计含有0.40-0.70％C，0.10-0.50％Si，0.10-1.00％的组成的钢材的表面上形成渗碳层％Mn，1.00-2.00％Cr，2.00-6.00％Mo和0.30-1.50％V，余量为Fe与不可避免的杂质。渗碳层表面的碳浓度Xc为0.6≤Xc≤0.7质量％，渗碳距离δc为0.8mm≤δc≤1.2mm，Mo的偏析比（a）为1.00≤a≤1.30，余量钢材的γ量≤10体积％。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2006161141A Carburized component and its production method 有权
标题翻译：加固组分及其生产方法
公开(公告)号：JP2006161141A
公开(公告)日：2006-06-22
申请号：JP2004358617
申请日：2004-12-10
申请人： Daido Steel Co Ltd , Honda Motor Co Ltd , 大同特殊鋼株式会社 , 本田技研工業株式会社
发明人： HATTORI ATSUSHI , KANO TAKASHI , SERIKAWA TOMOKO , MIZUNO YOSHIKI
IPC分类号： C23C8/22 , C21D1/06 , C22C38/00 , C22C38/18 , C22C38/24 , C23C8/80
CPC分类号： C23C8/80 , C23C8/22
摘要： PROBLEM TO BE SOLVED: To provide a carburized component realizing the increase of strength regarding a power transmission component such as a gear, and to provide its production method.
SOLUTION: The carburized component has a composition comprising, by mass, 0.01 to 0.30% C, 0.80 to 1.50% Si, 0.30 to 1.20% Mn and 2.0 to 5.5% Cr, and the balance Fe with inevitable impurities. The average C concentration from the surface to a depth of 0.2 mm in the steel after vacuum carburization treatment is 1.2 to 3.0%, the area ratio of carbides from the surface to a depth of 50 μm is 15 to 60%, also, the carbides are finely dispersed and precipitated in such a manner that the carbides with the dimensions of ≤10 μm account for ≥90% of the total component, and further, the depth of an intergranular oxide layer from the surface is ≤1 μm.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种实现增加诸如齿轮的动力传递部件的强度的渗碳部件，并提供其制造方法。解决方案：渗碳组分的组成包括质量为0.01至0.30％的C，0.80至1.50％的Si，0.30至1.20％的Mn和2.0至5.5％的Cr，余量为Fe和不可避免的杂质。真空渗碳处理后钢中从表面到深度0.2mm的平均C浓度为1.2〜3.0％，碳化物从表面到深度50μm的面积比为15〜60％，碳化物以使得尺寸≤10μm的碳化物占总成分的≥90％的方式精细地分散和沉淀，此外，表面上的晶间氧化物层的深度≤1μm。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2005307243A High-sulfur free-cutting steel 审中-公开
标题翻译：高硫自由切割钢
公开(公告)号：JP2005307243A
公开(公告)日：2005-11-04
申请号：JP2004123230
申请日：2004-04-19
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： HATTORI ATSUSHI , KANO TAKASHI
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a high-sulfur free-cutting steel which contains much S but a controlled amount of coarse sulfide and hard carbosulfide, consequently has adequate machinability, and is less liable to cause inconvenience like the lowering of surface quality, reduction in hermeticity, the shortening of the tool life and the low precision of a finish-machined surface, originating from the falling of inclusions.
SOLUTION: The high-sulfur free-cutting steel comprises, by mass%, 0.20% or less C, 0.5-3.0% Mn, 0.02-0.40% P, 0.4-1.0% S, 0.5-3.0% Cr, 0.0050-0.0250% O and the balance Fe with unavoidable impurities, while satisfying the composition conditions expressed by the following expressions (1) to (3), when WMn (%) is defined as an Mn content, WCr (%) as a Cr content, WS (%) as an S content and WO (%) as an O content: (1) 1.5 ≤ (WMn+WCr)/WS ≤ 4.0, (2) 40 ≤ (WMn+WCr)/WO and (3) 1.0 ≤ WCr/WMn ≤ 2.5.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供含有大量S但受控量的粗硫化物和硬质硫化碳的高硫自由切削钢，因此具有足够的机械加工性，并且不太容易引起诸如表面降低等不便质量下降，气密性降低，刀具寿命缩短，精加工表面精度低，源于夹杂物的下落。解决方案：高硫自由切削钢以质量％计含有0.20％以下的C，0.5-3.0％的Mn，0.02-0.40％的P，0.4-1.0％的S，0.5-3.0％的Cr，0.0050 -0.0250％O，余量为不可避免杂质的Fe，同时满足以下表达式（1）〜（3）表示的组成条件，当将WMn（％）定义为Mn含量时，WCr（％）为Cr含量，作为O含量的WS（％）和作为O含量的WO（％）：（1）1.5≤（WMn + WCr）/WS≤4.0，（2）40≤（WMn + WCr）/ WO和（3） 1.0≤WCr/WMn≤2.5。版权所有（C）2006，JPO＆NCIPI

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