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1. 发明专利

IN236KON2015A WIRE FOR PISTON RINGS 未知
公开(公告)号：IN236KON2015A
公开(公告)日：2015-06-12
申请号：IN236KON2015
申请日：2015-01-27
申请人： TOKUSEN KOGYO KK , NIPPON KOSHUHA STEEL CO LTD
发明人： KAMON RYOUICHI , MIZUNO YUKITAKA
IPC分类号： C22C38/00
摘要： [Object] To provide a wire 1 for piston rings which is less likely to cause a width of an end gap 4 of a piston ring to be varied, is excellent in processability during coiling, and is obtained at low cost. [Solution] The wire 1 for piston rings is made of steel which contains 0.50% by weight or greater but 0.80% by weight or less of C, 1.00% by weight or less of Si, 1.00% by weight or less of Mn, 11.0% by weight or greater but 14.0% by weight or less of Cr, 0.20% by weight or greater but 2.0% by weight or less of Mo, and an unavoidable impurity. An area ratio of carbide particles having a circle-equivalent diameter of 0.2 μm or greater but 5 μm or less in a structure in a transverse section of the wire 1 is equal to or less than 10%. A Vickers hardness of the wire 1 is equal to or greater than 350 but equal to or less than 450. The wire 1 is obtained through quenching and tempering. A temperature of the tempering is equal to or higher than 645°C.

2. 发明公开

EP2905352A4 WIRE FOR PISTON RINGS 有权
标题翻译： WIRE活塞环
公开(公告)号：EP2905352A4
公开(公告)日：2016-06-15
申请号：EP12886048
申请日：2012-10-03
申请人： TOKUSEN KOGYO KK , NIPPON KOSHUHA STEEL CO LTD
发明人： KAMON RYOUICHI , MIZUNO YUKITAKA
IPC分类号： C22C38/00 , C21D1/18 , C21D6/00 , C21D8/06 , C21D9/52 , C22C38/02 , C22C38/04 , C22C38/22 , C22C38/24 , F16J9/26
CPC分类号： C22C38/24 , C21D1/18 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/065 , C21D9/52 , C21D9/525 , C21D2211/004 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/22 , F16J9/26
摘要： [Object] To provide a wire 1 for piston rings which is less likely to cause a width of an end gap 4 of a piston ring to be varied, is excellent in processability during coiling, and is obtained at low cost. [Solution] The wire 1 for piston rings is made of steel which contains 0.50% by weight or greater but 0.80% by weight or less of C, 1.00% by weight or less of Si, 1.00% by weight or less of Mn, 11.0% by weight or greater but 14.0% by weight or less of Cr, 0.20% by weight or greater but 2.0% by weight or less of Mo, and an unavoidable impurity. An area ratio of carbide particles having a circle-equivalent diameter of 0.2 µm or greater but 5 µm or less in a structure in a transverse section of the wire 1 is equal to or less than 10%. A Vickers hardness of the wire 1 is equal to or greater than 350 but equal to or less than 450. The wire 1 is obtained through quenching and tempering. A temperature of the tempering is equal to or higher than 645°C.

3. 发明专利

JP2002003989A HIGH WEAR RESISTANT ALLOY STEEL AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002003989A
公开(公告)日：2002-01-09
申请号：JP2000192525
申请日：2000-06-27
申请人： NIPPON KOSHUHA STEEL CO LTD
发明人： NAKAMURA KATSUYA , MIZUNO YUKITAKA , HAYASHIDA KEIICHI
IPC分类号： C21D6/00 , C21D1/06 , C22C38/00 , C22C38/24
摘要： PROBLEM TO BE SOLVED: To provide high wear resistant alloy steel which can be manufactured at low cost and has wear resistance equal to or higher than that of high speed steel and in which the occurrence of thermal distortion is reduced and to provide its manufacturing method. SOLUTION: The high wear resistant alloy steel is steel having a composition containing >=[0.06×(2×Mo(mass%)+W(mass%))+0.25×V(mass%)+0.50]% C,

4. 发明专利

JP2001279393A BEARING STEEL EXCELLENT IN GRINDABILITY 失效
公开(公告)号：JP2001279393A
公开(公告)日：2001-10-10
申请号：JP2000094595
申请日：2000-03-30
申请人： NIPPON KOSHUHA STEEL CO LTD
发明人： MIZUNO YUKITAKA , TAKASHIMA TOSHIAKI , FURUSAWA SADAYOSHI
IPC分类号： F16C33/32 , C22C38/00 , C22C38/38 , C22C38/58 , F16C33/34 , F16C33/62
摘要： PROBLEM TO BE SOLVED: To provide a steel material which is a bearing material used for roller bearing such as ball bearing and enables high-precision and high-efficiency grinding at the final grinding of rolling elements and to contribute to the improvement of the productivity and performance of a bearing. SOLUTION: This bearing steel excellent in grindability has a composition consisting of, by weight, 0.6-1.2% C, 0.1-2.0% Si, 0.1-2.0% Mn, 0.8-14.0% Cr and the valance Fe with inevitable impurities. Moreover, the relationship between the length, in a rolling direction, of carbonitrides composed essentially of Ti existing as the inevitable impurities and the number of these carbonitrides, with respect to 200 mm2 inspection area, is as follows: the number of the carbonitrides with a length of 10- =75 μm is n4. Further, when an inclusion index N is represented by N=2n1+5n2+10n3+15n4, 10

5. 发明专利

JP2005060812A Ferritic free cutting stainless steel 有权
标题翻译：无切割切割不锈钢
公开(公告)号：JP2005060812A
公开(公告)日：2005-03-10
申请号：JP2003296449
申请日：2003-08-20
申请人： Nippon Koshuha Steel Co Ltd , 日本高周波鋼業株式会社
发明人： SAWADA YASUO , MIZUNO YUKITAKA , YUASA YUICHI , FURUSAWA SADAYOSHI
IPC分类号： C22C38/00 , C22C38/44 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide lead-free ferritic free cutting stainless steel which has excellent outgass resistance, corrosion resistance and machinability.
SOLUTION: The ferritic free cutting stainless steel has a composition comprising, by mass, ≤0.1% C, ≤1.0% Si, ≤0.5% Mn, >0.05 to 0.15% P, 0.1 to 0.4% S, 0.5 to 1.5% Cu, ≤1.0% Ni, 16 to 21% Cr, ≤1.0% Mo, ≤0.05% N and ≤0.03% O, and the balance Fe with inevitable impurities, and in which the ratio between the Mn content and the S content, (Mn/S) is controlled to ≤2.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供无铅铁素体自由切削不锈钢，具有优异的耐气孔性，耐腐蚀性和可加工性。解决方案：铁素体自由切削不锈钢具有以质量计≤0.1％C，≤1.0％Si，≤0.5％Mn，> 0.05-0.15％P，0.1-0.4％S，0.5-1.5 ％Cu，≤1.0％Ni，16〜21％Cr，≤1.0％Mo，≤0.05％N和≤0.03％O，余量为Fe与不可避免的杂质，其中Mn含量与S含量之比，（Mn / S）控制在≤2。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2012219367A Non-magnetic stainless steel 有权
标题翻译：非磁性不锈钢
公开(公告)号：JP2012219367A
公开(公告)日：2012-11-12
申请号：JP2011089666
申请日：2011-04-14
申请人： Nippon Koshuha Steel Co Ltd , 日本高周波鋼業株式会社
发明人： MIZUNO YUKITAKA
IPC分类号： C22C38/00 , C22C38/58 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a non-magnetic stainless steel which is high in corrosion resistance and has high strength which can be endured in a high load and a heavy load even under the environment of a strong magnetic field.SOLUTION: The non-magnetic stainless steel includes the optimized contents of C, Cr, N, V, Mn, Ni, Al and the balance being Fe and inevitable impurities and the contents of C and N is 0.3 to 0.6 mass% in the total quantity, and when the contents of Cr, N, C and V are represented by [Cr], [N], [C] and [V], respectively, the [N] being the N content and X represented by the following formula: X=[Cr]/100-0.10 and Y=4.25×[C]+3.64×[N] has a relation that a ratio of [N]/X is 0.4 to 3.0 and the [V] being the V content has a relation that a ratio of [V]/Y is 0.7 to 1.5.
摘要翻译：要解决的问题：提供耐腐蚀性高的非磁性不锈钢，并且具有高强度，即使在强磁场的环境下也能承受高负载和重负载。解决方案：非磁性不锈钢包括C，Cr，N，V，Mn，Ni，Al的优化含量，余量为Fe和不可避免的杂质，C和N的含量为0.3〜0.6质量％在总量上，当Cr，N，C和V的含量分别由[Cr]，[N]，[C]和[V]表示时，[N]是N含量，X表示为 X = [Cr] /100-0.10，Y = 4.25×[C] + 3.64×[N]与[N] / X的比例为0.4〜3.0，[V]为 V含量与[V] / Y的比例为0.7〜1.5的关系。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JPH11279710A Bearing steel excellent in acoustic property and quietness 失效
标题翻译：轴承钢在声学性质和安静性方面优秀
公开(公告)号：JPH11279710A
公开(公告)日：1999-10-12
申请号：JP10003198
申请日：1998-03-27
申请人： Kobe Steel Ltd , Nippon Koshuha Steel Co Ltd , 日本高周波鋼業株式会社 , 株式会社神戸製鋼所
发明人： MIZUNO YUKITAKA , FURUSAWA SADAYOSHI , KANATSUKI KOJI
IPC分类号： F16C33/58 , C22C38/00 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To obtain a steel excellent in an acoustic property and quietness by making an acid insoluble impurity less than a specified pieces per unit steel when dissolving, in a mixed acid aqueous solution heated to a specified temp, the steel which contains a specified content in each of C, Si, Mn, Cr, Al and the balance Fe with inevitable impurities, and restricts Ti, O in the impurities to a specified content.
SOLUTION: A content, by weight, is 0.6-1.2% C, 0.1-2.0% Si, 0.1-2.0% Mn, 10.0-14.0% Cr, ≤0.04% Al. Ti, O in the impurities, by weight, ≤0.0015% T, ≤0.0012% O. A mixed acid aqueous solution is prepared by mixing, by mass, 60% nitric acid, 96% sulfuric acid, pure water in the volume ratio of 25:1:55 and heating to 90-95°C. An acid insuluble impurity includes Al
2 O
3 of 50%, and its size is ≥15 μm major diameter and is less than 19 pieces in 10 g of the steel. In the case corrosion resistance is not required, a Cr content is 0.8-2.0%, and in the case of needing that of medium degree, it is 2.0-10.0%.
COPYRIGHT: (C)1999,JPO
摘要翻译：要解决的问题：为了通过在溶解时将每单位钢中的特定片数的酸不溶性杂质在加热到规定温度的混合酸水溶液中，使其具有优异的声学性质和安静性的钢，在C，Si，Mn，Cr，Al中的每一种中指定含量，余量为Fe与不可避免的杂质，并将杂质中的Ti，O限制在规定的含量。解决方案：重量含量为0.6-1.2％C，0.1-2.0％Si，0.1-2.0％Mn，10.0-14.0％Cr，<= 0.04％Al。杂质中的Ti，O，<= 0.0015％T，<= 0.0012％O.混合酸水溶液通过以质量计混合60％硝酸，96％硫酸，体积中的纯水比例为25:1:55，加热至90-95℃。酸不纯的杂质包括50％的Al 2 O 3，其尺寸>15μm的大直径，并且在10g钢中小于19个。在不需要耐腐蚀性的情况下，Cr含量为0.8〜2.0％，在中等程度的情况下为2.0〜10.0％。

8. 发明专利

JP2002012941A FREE CUTTING STEEL FOR PLASTIC MOLDING DICE EXCELLENT IN FINISHED SURFACE ROUGHNESS 失效
公开(公告)号：JP2002012941A
公开(公告)日：2002-01-15
申请号：JP2000193471
申请日：2000-06-27
申请人： NIPPON KOSHUHA STEEL CO LTD
发明人： TAKASHIMA TOSHIAKI , MIZUNO YUKITAKA , FURUSAWA SADAYOSHI
IPC分类号： B29C33/38 , C22C38/00 , C22C38/40 , C22C38/44
摘要： PROBLEM TO BE SOLVED: To provide a free cutting steel for plastic molding dice low in cost and excellent in finished surface roughness, by which machinability is improved without addition of much amount of elements capable of improving machinability, and without applying special heat treatment, and by which opposite characteristics such as machinability, hardening and finished surface roughness can be improved. SOLUTION: This free cutting steel for plastic molding dice, low in cost and excellent in finished surface roughness, is composed of 0.20 to 0.60 mass % C, 0.3 to 1.00 mass % Si, 0.50 to 1.50 mass % Mn, 0.010 to 0.050 mass % S, 0.30 to 1.2 mass % Cr, 0.05 to 1.00 Ni, 0.01 to 0.05 mass % Al and the balance Fe with inevitable impurities. The steel has a structure consisting of ferrite and pearlite, wherein the ratio of area of ferrite content is 15 to 40% and the residue is pearlite, and has the hardness of 83 to 97 HRB, and further, contains at least one selected from the group consisting of 0.1 to 1.0 mass % Cu and 0.1 to 1.0 mass % Mo according to necessary.

9. 发明专利

JPH10317010A INSTRUMENT FOR MEASURING SHAPE OF MATERIAL TO BE HEAT-TREATED AND METHOD FOR MEASURING SHAPE THEREOF 失效
公开(公告)号：JPH10317010A
公开(公告)日：1998-12-02
申请号：JP13928497
申请日：1997-05-14
申请人： NIPPON KOSHUHA STEEL CO LTD , WATANABE RYUZO , KAWASAKI AKIRA
发明人： MIZUNO YUKITAKA , WATANABE RYUZO , KAWASAKI AKIRA
IPC分类号： G01B11/24 , B22F3/10 , C21D1/74
摘要： PROBLEM TO BE SOLVED: To surely enable the measurement in two-dimension or three-dimension during actual working time by analyzing picture data related to the shape, deforming quantities, distribution of the deforming quantities and uneven deformation of a material to be heat-treated during the heat treatment. SOLUTION: The heat treatment is executed to the material 2 to be heat- treated set in the inner part of an atmosphere heating furnace 1 while controlling the atmosphere, and the material 2 to be heat-treated is monitored with a camera 6 from the outside through a peep hole 7 in the atmosphere heating furnace 1. In the monitored picture data, same points in the material among the reference picture data before heat treatment working and the measured objective data during the heat treatment working, are specified. Based on plural displacing quantities of these same points in the material, the deforming quantities, distribution of the deforming quantities and uneven deformation in the whole material to be heat-treated are calculated with the picture data analyzing device 8.

10. 发明专利

JP2003113448A STEEL FOR BEARING SUPERIOR IN SILENT PROPERTY 审中-公开
公开(公告)号：JP2003113448A
公开(公告)日：2003-04-18
申请号：JP2001310551
申请日：2001-10-05
申请人： NIPPON KOSHUHA STEEL CO LTD
发明人： TAKASHIMA TOSHIAKI , MIZUNO YUKITAKA
IPC分类号： F16C33/32 , C22C38/00 , C22C38/38 , C22C38/58 , F16C33/62
摘要： PROBLEM TO BE SOLVED: To provide a steel for bearing superior in a silent property, which stably provides a satisfactory silence property and an acoustic feature. SOLUTION: This steel for bearing improves the acoustic feature and silent property by controlling a composition of oxides in the steel. Specifically, the steel is improved in the acoustic feature and the silent property by controlling the contents of Al2 O3 to 60 to 90 mass%, the contents of MgO to 10 to 30 mass%, the contents of SiO2 to 10 mass% or less, and the contents of CaO to 10 mass% or less.

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