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1. 发明专利

JP2004162161A Mechanical part and method for producing the same 有权
公开(公告)号：JP2004162161A
公开(公告)日：2004-06-10
申请号：JP2003037802
申请日：2003-02-17
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： INOUE KOICHIRO , KUREBAYASHI YUTAKA , MATSUMURA KOJI , MATSUDA HIDEKI , TAKASHIMA MITSUO
IPC分类号： C21D1/06 , C21D9/30 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/58 , C22C38/60 , C23C8/26 , C23C8/50
CPC分类号： C22C38/42 , C21D1/06 , C22C38/02 , C22C38/04 , C23C8/26 , C23C8/50
摘要： PROBLEM TO BE SOLVED: To provide a mechanical part made from steel, surface-hardened by nitriding, and being excellent in strengths and easiness in correcting bend and to provide a method for producing the same.
SOLUTION: The mechanical part 1 made from steel and surface-hardened by nitriding has a surface layer part 2 improved in its surface hardness by the nitriding and an inner layer part 3 exhibiting a substantially constant hardness not affected by the nitriding. The Vickers hardness of the inner layer part 3 is 190 to 260 HV. In the surface layer part 2, the Vickers hardness in the reference position 50 μm deep from the surface of the member is 340 to 460 HV. The depth of an effective hardened layer having a Vickers hardness of 270 HV is at least 0.3 mm deep from the surface 4 of the member.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2004307930A Non-heat treated steel to be hot-forged for connecting rod 审中-公开
公开(公告)号：JP2004307930A
公开(公告)日：2004-11-04
申请号：JP2003102939
申请日：2003-04-07
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： INOUE KOICHIRO , KINOSHITA TOYOTAKA , ISHIDA MASAO
IPC分类号： C22C38/00 , C22C38/42 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To inexpensively provide a non-heat treated steel to be hot-forged for a connecting rod, which reliably acquires high yield strength and fatigue strength even if thermal refining treatment is omitted after hot forging, and is constituted only by inexpensive elements without containing expensive V.
SOLUTION: The non-heat treated steel to be hot-forged for the connecting rod has a composition comprising, by wt.%, less than 0.15-0.35% C, more than 1.2% but 2% or less Si, 0.5-1.5% Mn, more than 0.05% but 0.2% or less P, 0.01-0.5% Cu, 0.01-0.5% Ni, 0.01-1% Cr, 0.001-0.01% s-Al, 0.005-0.035% N and the balance Fe with unavoidable impurities, while satisfying the expression 1: 0.6≤Ceq≤0.85 (wherein Ceq=C+0.07×Si+0.16×Mn+0.61×P+0.19×Cu+0.17×Ni+0.2×Cr), the expression 2: α>0.25 (wherein α=1/10×Si+3/5×P+6×N), and the expression 3: β

3. 发明专利

JP2004183094A Nonheat-treated steel easily fractured and separated at low temperature, and engaged member fractured and separated at low temperature 有权
$Nonheat-treated steel easily fractured and separated at low temperature, and engaged member fractured and separated at low temperature$
公开(公告)号：JP2004183094A
公开(公告)日：2004-07-02
申请号：JP2003356201
申请日：2003-10-16
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： INOUE KOICHIRO , KINOSHITA TOYOTAKA , ISHIDA MASAO
IPC分类号： C22C38/00 , C22C38/42 , C22C38/60
CPC分类号： C22C38/42 , B21K1/766 , C21D1/02 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/34 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a nonheat-treated steel which has suitable toughness within a use temperature range, and is easily fractured and separated not only in the conventional low temperature region including a cryogenic region for liquid nitrogen cooling or the like required by the object to be fractured, but also in an inexpensively reachable low temperature region, and to provide an engaged member fractured and separated at low temperatures.
SOLUTION: The nonheat-treated steel easily fractured and separated at low temperatures has a composition comprising, by mass, 0.15 to 0.35% C, 0.5 to 2.0% Si, 0.5 to 1.5% Mn, 0.03 to 0.15% P, 0.01 to 0.15% S, 0.01 to 0.5% Cu, 0.01 to 0.5% Ni, 0.01 to 1.0% Cr, 0.001 to 0.01% s-Al, 0.005 to 0.035% N, 0.0001 to 0.01% Ca and 0.001 to 0.01% O, and satisfying 0.6≤Ceq≤0.85 and 0≤T
Tr ≤1.5, and the balance Fe with inevitable impurities.
COPYRIGHT: (C)2004,JPO&NCIPI

4. 发明专利

JP2010024510A Steel for plastic molding die having excellent temperature controllability 有权
标题翻译：用于塑料模具的钢具有极好的温度控制能力
公开(公告)号：JP2010024510A
公开(公告)日：2010-02-04
申请号：JP2008189208
申请日：2008-07-22
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： IBUKI MOTOHIRO , INOUE KOICHIRO
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a steel for a plastic molding die which has high corrosion resistance and thermal conductivity, and has excellent temperature controllability.
SOLUTION: The steel for the plastic molding die having excellent temperature controllability is composed of a steel having a composition comprising, by mass, 0.03 to 0.25% C, 0.01 to 0.40% Si, 0.10 to 1.50% Mn, ≤0.30% P, ≤0.050% S, 0.05 to 0.20% Cu, 0.05 to 1.50% Ni, 5.0 to 10.0% Cr, 0.10 to 2.00% Mo, 0.01 to 0.10% V, ≤0.10% N, ≤0.01% O and ≤0.05% Al, also satisfying inequality(Cr+Mo)≤10% and inequality 7≤(Cr+3.3Mo), and the balance Fe with inevitable impurities.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有高耐蚀性和导热性的塑料模具用钢，并且具有优异的温度可控性。解决方案：具有优异的温度可控性的塑料模具用钢由具有以质量计含有0.03〜0.25％C，0.01〜0.40％Si，0.10〜1.50％Mn，≤0.30％ P，≤0.050％S，0.05〜0.20％Cu，0.05〜1.50％Ni，5.0〜10.0％Cr，0.10〜2.00％Mo，0.01〜0.10％V，≤0.10％N，≤0.01％O，≤0.05％ Al，也满足不等式（Cr + Mo）≤10％和不等式7≤（Cr + 3.3Mo），余量为Fe与不可避免的杂质。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2008188608A Die for die-casting and its surface treating method 审中-公开
标题翻译： DIE铸造及其表面处理方法
公开(公告)号：JP2008188608A
公开(公告)日：2008-08-21
申请号：JP2007023660
申请日：2007-02-02
申请人： Daido Amistar Co Ltd , Daido Steel Co Ltd , Nissin Electric Co Ltd , 大同アミスター株式会社 , 大同特殊鋼株式会社 , 日新電機株式会社
发明人： INOUE KOICHIRO , ISHII TAKAYA , KOBAYASHI KIICHI , KITAGAWA TOSHIHIRO
IPC分类号： B22D17/22 , B22C9/06 , C23C8/14 , C23C8/42 , C23C14/06 , C23C14/08 , C23C14/32 , C23C28/00
摘要： PROBLEM TO BE SOLVED: To provide a die for die-casting having excellent erosion-resistance characteristic and together with sticking resistance characteristic at the casting time of molten metal of Al, Mg or Zn or these alloys, and its surface treating method for surely having these above characteristics.
SOLUTION: In the die 1 for die-casting, used to casting of the molten metal; on the surface 2 of the die 1 for related die casting, at least containing a cavity, a first layer 4 composed of one or more of carbide, nitride or carbo-nitride, in one or more of metals in IVA, VA and VIA groups or the nitride containing Si or Al in metals of IVA, VA or VIA groups, and a second layer 6 containing at least one of the above oxide layer 5, are provided.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有优异的抗侵蚀特性以及Al，Mg或Zn或这些合金的熔融金属铸造时的耐粘连性的压铸用模具及其表面处理方法肯定有这些上述特点。
解决方案：在用于压铸的模具1中，用于铸造熔融金属; 在用于相关压铸的模具1的表面2上，至少包含空腔，由IVA，VA和VIA组中的一种或多种金属中的一种或多种碳化物，氮化物或碳氮化物组成的第一层4 或包含IVA，VA或VIA基团的金属中的含有Si或Al的氮化物，以及含有至少一种上述氧化物层5的第二层6。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2006104519A High toughness hot tool steel and its production method 审中-公开
标题翻译：高韧性热工钢及其生产方法
公开(公告)号：JP2006104519A
公开(公告)日：2006-04-20
申请号：JP2004292746
申请日：2004-10-05
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： INOUE KOICHIRO , SUZUKI KAZUHO
IPC分类号： C22C38/00 , B22D23/10 , B22D27/04 , C21D8/00 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high toughness hot tool steel to be used as a production material for a die for hot working, wherein even it is used as a large-sized die stock, a long die life is attained by giving high hardness, and further, danger that cracks are generated during the use of a die is reduced by securing high toughness and ductility.
SOLUTION: A hot tool steel is made into an ingot under the condition that the average cooling rate from a solidus temperature at the time of solidification to a liquidus temperature is ≥0.025°C/s, the ingot is heated to the temperature range of 1,240 to 1,360°C, and the crystallized carbides and carbonitrides are subjected to solution treatment, thus the one in which the density of the carbides and carbonitrides crystallized in the steel together with oxide-based inclusions is (1) ≤0.01 piece in the large-sized one having the diameter of the equivalent circle of >50 μm, and is (2) ≤100 pieces in the small-sized one having the diameter of the equivalent circle of 1 to 50 μm per mm
2 of the cross-section in the steel is obtained.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供用作热加工用模具的制造材料的高韧性热工具钢，其中即使用作大型模具坯料，也可以通过以下方式实现长的模具寿命：提供高硬度，并且通过确保高韧性和延展性来降低在使用模具期间产生裂纹的危险。
解决方案：在固化时的固相线温度至液相线温度的平均冷却速度≥0.025℃/ s的条件下，将热工具钢制成锭，将锭加热至温度范围为1,240〜1360℃，结晶碳化物和碳氮化物进行固溶处理，其中，与氧化物系夹杂物一起在钢中结晶的碳化物和碳氮化物的密度为（1）≤0.01 具有当量圆直径>50μm的大尺寸尺寸，并且在小于等于1mm的直径为1至50μm的每mm 2 < / SP>钢的横截面。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JPH11279698A Non-heat treated steel for hot forging, easy of separation by fracture, and its production 失效
$Non-heat treated steel for hot forging, easy of separation by fracture, and its production$
标题翻译：用于热锻的非热处理钢，易碎分离及其生产
公开(公告)号：JPH11279698A
公开(公告)日：1999-10-12
申请号：JP8537098
申请日：1998-03-31
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： INOUE KOICHIRO , NAKAMURA SADAYUKI
IPC分类号： F16C7/02 , C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To produce a non-heat treated steel for hot forging, usable in an as-non-treat-treated state after forming of a refined material into the shape of parts for machine structural use by hot forging, capable of separation by breaking in the case of the one to be used in a combined state after separation into two or more pieces, causing practically no problem of plastic deformation of the surface of breaking and having high fatigue strength of material and also to provide a connecting rod for engine using the steel.
SOLUTION: This non-heat treated steel for hot forging has an alloy composition consisting of, by weight, 0.2-0.6% C, 0.1-3.0% Si, 0.1-1.8% Mn, 0.1-1.0% Cr, 0.1-0.5% V, 0.05-0.20% P, 0.0001-0.020% As, 0.001-0.020% Sb, 0.005-0.030% Sn, 0.005-0.045% sol-Al, 0.005-0.030% N, and the balance essentially Fe and satisfying As+Sb+Sn≤0.030% and also has ≤35 HRC hardness after hot forging.
COPYRIGHT: (C)1999,JPO
摘要翻译：要解决的问题：为了生产用于热锻造的非热处理钢，可以在将精炼材料成型为通过热锻造进行机械结构使用的部件的形状中可以进行非处理处理的状态，能够分离通过在分离成两片以上之后在组合状态下使用的情况下断裂，实际上没有导致表面破裂的塑性变形和材料的疲劳强度高的问题，并且还提供了用于发动机采用钢材。解决方案：这种用于热锻的非热处理钢具有合金组成，其重量含量为0.2-0.6％C，0.1-3.0％Si，0.1-1.8％Mn，0.1-1.0％Cr，0.1-0.5％V ，0.05-0.20％P，0.0001-0.020％As，0.001-0.020％Sb，0.005-0.030％Sn，0.005-0.045％sol-Al，0.005-0.030％N，余量基本上为Fe，满足As + Sb + Sn <= 0.030％，热锻后也具有≤35HRC硬度。

8. 发明专利

JP2012007221A Method for manufacturing steel for plastic molding die 有权
标题翻译：制造塑料模具钢的方法
公开(公告)号：JP2012007221A
公开(公告)日：2012-01-12
申请号：JP2010145736
申请日：2010-06-28
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： IBUKI MOTOHIRO , SAKURAI SHINGO , INOUE KOICHIRO
IPC分类号： C21D6/00 , B29C33/38 , C22C38/00 , C22C38/58 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To improve mirror surface properties of a molding die while keeping the dimensional accuracy of the molding die after heat treatment.SOLUTION: A method for manufacturing a prehardened steel for a plastic molding die includes: a first hardening process in which a steel material which contains specified alloy components and the remaining comprising Fe and inevitable impurities is held at a hardening temperature or higher of an austenite transformation point and is cooled from the hardening temperature to 500°C by a cooling speed of 1-5°C/min; a second hardening process in which the steel is cooled from 500°C to 200°C by a cooling speed of 2.5-10°C/min; and an annealing process for annealing this steel material at 500-600°C. The cooling speed in this second hardening process is larger than the cooling speed of the first hardening process.
摘要翻译：要解决的问题：为了提高成型模具的镜面性能，同时保持热处理后的成型模具的尺寸精度。解决方案：一种用于制造用于塑料模制模具的预硬化钢的方法包括：第一硬化过程，其中含有特定合金组分的钢材和其余包含Fe和不可避免的杂质保持在固化温度或更高的硬化温度奥氏体相变点，并以1-5℃/ min的冷却速度从硬化温度冷却至500℃; 第二硬化过程，其中钢的冷却速度为2.5-10℃/分钟，从500℃冷却至200℃; 以及在500-600℃退火该钢材的退火工艺。该第二硬化处理中的冷却速度大于第一硬化处理的冷却速度。版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2005344205A Steel for machine part having excellent high temperature strength and machinability 审中-公开
标题翻译：具有极好的高温强度和机械性能的机器钢
公开(公告)号：JP2005344205A
公开(公告)日：2005-12-15
申请号：JP2004169018
申请日：2004-06-07
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： INOUE KOICHIRO , OTA HISASHI
IPC分类号： F16F1/02 , C21D6/00 , C22C38/00 , C22C38/24 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide steel for machine parts having high temperature strength and machinability which has high strength (high temperature strength) when used at a high temperature of 400 to 600°C and also has satisfactory machinability when subjected to machining in a pre-harden state after quenching and tempering.
SOLUTION: The steel for machine parts has a composition comprising, by mass, 0.3 to 0.4% C, 0.5 to 1.5% Si, 0.3 to 1.5% Mn, 3 to 6% Cr, Mo+1/2W: 0.5 to 3%, 0.3 to 1.5% V, 0.001 to 0.02% Al, 0.005 to 0.025% N and ≤0.05% P, and the balance Fe with inevitable impurities.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为在400〜600℃的高温下使用时具有高强度（高温强度）的高温强度和机械加工性的机械部件用钢，并且在进行加工时也具有良好的机械加工性淬火回火后处于预硬化状态。＆lt; P＆gt;解决方案：用于机器部件的钢具有以质量计包含0.3〜0.4％的C，0.5〜1.5％的Si，0.3〜1.5％的Mn，3〜6％的Cr，Mo + 1 / 2W：0.5〜 3％，0.3〜1.5％V，0.001〜0.02％Al，0.005〜0.025％N，≤0.05％P，余量为Fe与不可避免的杂质。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2005336553A Hot tool steel 审中-公开
标题翻译：热工钢
公开(公告)号：JP2005336553A
公开(公告)日：2005-12-08
申请号：JP2004157270
申请日：2004-05-27
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： INOUE KOICHIRO
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide hot tool steel having a low dependency of impact value on cooling rate and also having excellent toughness, hardness, machinability and heat check resistance.
SOLUTION: The hot tool steel has a composition consisting of, by weight, 0.3 to 0.5% C, 0.2 to 1.0% Si, 0.5 to 2.5% Mn, 0.001 to 0.05% P, 0.01 to 0.06% S, 3.0 to 6.0% Cr, 0.5 to 3.0% (Mo+1/2W), 0.3 to 1.5% V, 0.001 to 0.02% Al, 0.005 to 0.025% N, 0.001 to 0.01% O, 0.0001 to 0.01% Ca and the balance Fe with impurities and is refined to 38 to 52 HRC after quench-and-temper treatment.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供对冷却速度具有低冲击值依赖性的热工具钢，并且还具有优异的韧性，硬度，可加工性和耐热检查性。解决方案：热工具钢具有以重量计包含0.3〜0.5％C，0.2〜1.0％Si，0.5〜2.5％Mn，0.001〜0.05％P，0.01〜0.06％S，3.0〜 6.0％Cr，0.5〜3.0％（Mo + 1 / 2W），0.3〜1.5％V，0.001〜0.02％的Al，0.005〜0.025％的N，0.001〜0.01％的O，0.0001〜0.01％的Ca，余量为Fe 在淬火和回火处理后，精制为38〜52HRC。版权所有（C）2006，JPO＆NCIPI

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