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41. 发明授权

US10388440B2 R-T-B based sintered magnet 有权
公开(公告)号：US10388440B2
公开(公告)日：2019-08-20
申请号：US15344245
申请日：2016-11-04
申请人： TDK CORPORATION
发明人： Atsushi Tada
IPC分类号： B22F9/04 , H01F1/08 , B22F3/16 , H01F1/053 , C21D1/74 , C21D3/06 , C22C38/00 , C22C38/10 , C22C38/16 , H01F1/057
摘要： An R-T-B based sintered magnet includes R2T14B crystal grains. A grain boundary formed by the two or more adjacent R2T14B crystal grains includes an R—N—O—C concentrated part having higher concentrations of “R”, N, O, and C than those in the R2T14B crystal grains. “R” of the R—N—O—C concentrated part includes Y. A ratio of Y atom to “R” atom in the R—N—O—C concentrated part is 0.65 or more and 1.00 or less. A ratio of O atom to “R” atom in the R—N—O—C concentrated part is more than 0 and 0.20 or less. A ratio of N atom to “R” atom in the R—N—O—C concentrated part is 0.03 or more and 0.15 or less.

42. 发明授权

US09895863B2 High-strength galvanized steel sheet and method of manufacturing the same 有权
公开(公告)号：US09895863B2
公开(公告)日：2018-02-20
申请号：US14914803
申请日：2014-08-22
申请人： JFE Steel Corporation
发明人： Daisuke Harako , Tetsuya Iwata
IPC分类号： B32B15/01 , C23C2/02 , C23C2/40 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C21D1/26 , C21D6/00 , C21D9/46 , B32B15/04 , B32B15/18 , C21D1/74 , C23C2/06 , C22C18/00 , C22C18/04 , C21D8/02 , C21D3/06
CPC分类号： B32B15/013 , B32B15/01 , B32B15/04 , B32B15/18 , C21D1/26 , C21D1/74 , C21D3/06 , C21D6/005 , C21D6/008 , C21D8/0278 , C21D9/46 , C22C18/00 , C22C18/04 , C22C38/00 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/06 , C23C2/40 , Y10T428/12799 , Y10T428/12972 , Y10T428/12993
摘要： A high-strength galvanized steel sheet includes a base steel sheet having a specific chemical composition and a zinc coating layer disposed on the surface of the base steel sheet in a coating weight per side of 20 g/m2 to 120 g/m2, wherein the amount of hydrogen measured by a specific method is 0.05 mass ppm to 0.40 mass ppm; and ISisur/ISibulk and IMnsur/IMnbulk calculated by a specific method are not more than 2.0 and not more than 3.0, respectively.

43. 发明申请

US20170278602A1 R-T-B BASED PERMANENT MAGNET 审中-公开
公开(公告)号：US20170278602A1
公开(公告)日：2017-09-28
申请号：US15440667
申请日：2017-02-23
申请人： TDK CORPORATION
发明人： Takurou IWASA , Masashi MIWA
IPC分类号： H01F1/053 , C22C38/16 , C22C38/14 , C22C38/10 , C21D3/06 , C22C38/00 , B22F9/04 , B22F3/12 , B22F5/00 , H01F1/06 , C22C38/06
摘要： An R-T-B based permanent magnet includes R-T-B based compounds as main-phase crystal grains. R is a rare earth element. T is iron group element(s) essentially including Fe or Fe and Co. B is boron. A two-grain boundary is contained between the two adjacent main-phase crystal grains. An average grain size of the main-phase crystal grains is 0.9 μm or more and 2.8 μm or less. A thickness of the two-grain boundary is 5 nm or more and 200 nm or less.

44. 发明授权

US09620269B2 Method and equipment for processing NdFeB rare earth permanent magnetic alloy with hydrogen pulverization 有权
公开(公告)号：US09620269B2
公开(公告)日：2017-04-11
申请号：US14708460
申请日：2015-05-11
申请人： SHENYANG GENERAL MAGNETIC CO., LTD.
发明人： Baoyu Sun
IPC分类号： H01F41/02 , B22F5/00 , H01F1/057 , B22F9/02 , C21D3/06 , C22C38/00 , C22C38/10 , C22C38/16 , C22C38/32
CPC分类号： H01F1/0577 , B22F9/023 , B22F2998/10 , B22F2999/00 , C21D3/06 , C22C38/002 , C22C38/005 , C22C38/10 , C22C38/16 , C22C38/32 , H01F1/0573 , H01F41/0273 , B22F1/0055 , B22F9/04 , B22F2009/044 , B22F3/02 , B22F3/1021 , B22F3/1028 , B22F2003/247 , B22F2201/20 , B22F2201/11
摘要： A method and an equipment for processing NdFeB rare earth permanent magnetic alloy with a hydrogen pulverization are provided. The method includes steps of: providing a continuous hydrogen pulverization equipment; while driving by a transmission device, passing a charging box loaded with rare earth permanent magnetic alloy flakes orderly through a hydrogen absorption chamber, having a temperature of 50-350° C. for absorbing hydrogen, a heating and dehydrogenating chamber, having a temperature of 600-900° C. for dehydrogenating, and a cooling chamber of the continuous hydrogen pulverization equipment; receiving the charging box by a discharging chamber through a discharging valve; pouring out the alloy flakes after the hydrogen pulverization into a storage tank at a lower part of the discharging chamber; sealing up the storage tank under a protection of nitrogen; and, moving the charging box out through a discharging door of the discharging chamber and re-loading, for repeating the previous steps.

45. 发明授权

US09267183B2 Wire with excellent suitability for drawing and process for producing the same 有权
标题翻译：电线具有优良的适用性，适用于绘图和加工生产
公开(公告)号：US09267183B2
公开(公告)日：2016-02-23
申请号：US12279000
申请日：2006-11-07
申请人： Takuya Kochi , Shogo Murakami , Shoji Miyazaki , Ken Ishida , Masao Toyama , Fujio Koizumi
发明人： Takuya Kochi , Shogo Murakami , Shoji Miyazaki , Ken Ishida , Masao Toyama , Fujio Koizumi
IPC分类号： C21D9/52 , C21D3/06 , C21D8/06 , C22C38/00 , C22C38/04 , C22C38/20 , C22C38/28 , C22C38/34 , C22C38/42 , C22C38/50 , B21B1/16 , B21B3/00
CPC分类号： C21D3/06 , B21B1/16 , B21B3/00 , C21D8/065 , C21D9/525 , C22C38/002 , C22C38/04 , C22C38/20 , C22C38/28 , C22C38/34 , C22C38/42 , C22C38/50
摘要： A hot-rolled wire rod excelling in wire drawability is provided, in which breakage can be suppressed even in heavy work from a large diameter. A hot-rolled wire rod contains C: 0.35 to 0.65% (percent by mass, hereinafter expressed as well), Si: 1.4 to 3.0%, Mn: 0.10 to 1.0%, Cr: 0.1 to 2.0%, P: 0.025% or less (exclusive of 0%), S: 0.025% or less (exclusive of 0%), N: 0.006% or less (exclusive of 0%), Al: 0.1% or less (exclusive of 0%), and O: 0.0030% or less (exclusive of 0%), with the remnant consisting of Fe and inevitable impurities; wherein the content of hydrogen in steel is 2.50 ppm (ppm by mass, hereinafter expressed as well) or less, and hardness (HV) is 460×C00.1 or less (C0 indicates the content of C (percent by mass) in a position of depth of D/4 (D: diameter of the wire rod)).
摘要翻译：提供了一种具有良好的拉丝性的热轧线材，其中即使在大直径的重工作中也能够抑制破损。热轧线材含有C：0.35〜0.65％（质量％，以下也表示），Si：1.4〜3.0％，Mn：0.10〜1.0％，Cr：0.1〜2.0％，P：0.025％较少（不含0％），S：0.025％以下（不含0％），N：0.006％以下（不含0％），Al：0.1％以下（不含0％），O： 0.0030％以下（不含0％），残留物由Fe和不可避免的杂质组成; 钢中的氢含量为2.50ppm（质量ppm，以下也表示）以下，硬度（HV）为460×C00.1以下（C0表示a的含量（质量％）） D / 4深度位置（D：线材直径））。

46. 发明申请

US20150302960A1 MANUFACTURING METHOD OF A POWDER FOR COMPACTING RARE EARTH MAGNET AND THE RARE EARTH MAGNET OMITTING JET MILLING PROCESS 审中-公开
标题翻译：用于压制稀土磁铁的粉末制造方法和稀土磁铁注入喷嘴流程
公开(公告)号：US20150302960A1
公开(公告)日：2015-10-22
申请号：US14441944
申请日：2013-11-08
申请人： XIAMEN TUNGSTEN CO., LTD.
发明人： Hiroshi NAGATA , Chonghu WU
IPC分类号： H01F1/057 , C21D6/00 , C22C1/06 , C22C38/00 , C22C38/16 , C22C38/14 , C22C38/06 , C22C33/00 , B22F9/04 , B22F3/12 , B22F3/04 , H01F1/08 , H01F1/053 , H01F1/055 , H01F41/02 , C21D3/06
CPC分类号： H01F1/0573 , B22F3/04 , B22F3/12 , B22F9/04 , B22F2999/00 , C21D3/06 , C21D6/007 , C22C1/06 , C22C33/00 , C22C38/002 , C22C38/005 , C22C38/007 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C2202/02 , H01F1/0536 , H01F1/0557 , H01F1/0577 , H01F1/086 , H01F41/0266 , B22F2009/045 , B22F2201/013
摘要： The present invention discloses manufacturing methods of a powder for compacting rare earth magnet and rare earth magnet that omit jet milling process, which comprise the steps as follows: 1) casting: casting the molten alloy of rare earth magnet raw material by strip casting method to obtain a quenched alloy with average thickness in a range of 0.2˜0.4 mm; 2) hydrogen decrepitation: decrepitating the quenched alloy hydrogen under a hydrogen pressure between 0.01˜1 MPa for 0.5˜24 h to obtain the powder. The present invention improves the manufacturing processes which are before the process of jet milling for omitting the process of jet milling, thus simplifying the process; which may also acquire a low cost production by efficiently using the precious rare earth resource.
摘要翻译：本发明公开了一种用于压实稀土磁体和稀土磁体的粉末的制造方法，该方法包括以下步骤：1）铸造：通过带式铸造法将稀土磁体原料的熔融合金铸造成获得平均厚度在0.2〜0.4mm范围内的淬火合金; 2）氢气爆裂：在0.01〜1MPa的氢气压力下将淬火的合金氢气破裂0.5〜24h，得到粉末。本发明改进了在喷射研磨过程之前的制造过程，以省略喷射铣削的过程，从而简化了工艺过程; 也可以通过有效利用稀土资源获得低成本生产。

47. 发明申请

US20080257008A1 High Strength Welded Steel Tube Superior in Hydrogen Embrittlement Cracking Resistance of Weld Metal and Method of Production of Same 有权
标题翻译：高强度焊接钢管优良的焊接金属氢脆性开裂性及其生产方法
公开(公告)号：US20080257008A1
公开(公告)日：2008-10-23
申请号：US11884860
申请日：2006-02-22
申请人： Eiji Tsuru , Takuya Hara , Hitoshi Asahi , Hiroshi Morimoto , Yoshio Terada , Tatsuya Yoshida , Kouichi Shinada
发明人： Eiji Tsuru , Takuya Hara , Hitoshi Asahi , Hiroshi Morimoto , Yoshio Terada , Tatsuya Yoshida , Kouichi Shinada
IPC分类号： B21C37/08 , B23K9/02 , C21D3/06 , C21D9/08 , C22C38/00 , F16L9/02
CPC分类号： B23K31/027 , B21C37/08 , B23K33/006 , B23K2101/06 , C21D3/06 , C21D9/08 , C21D9/50 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/58 , Y10T29/5185
摘要： The present invention provides a high strength welded steel pipe superior in weld zone embrittlement crack characteristics and a method of production of the same, that is, a method of production of a welded steel pipe superior in hydrogen embrittlement cracking resistance of weld metal characterized by seam welding from the inner and outer surfaces by a tensile strength of 850 MPa or more, then expanding or reducing the size of the pipe for correction, which method of production of welded steel pipe characterized in that the hydrogen concentration of the preceding weld metal is 0.2 cc or less per 100 g at ordinary temperature.
摘要翻译：本发明提供了一种焊接区脆性裂纹特性优异的高强度焊接钢管及其制造方法，即以接缝为特征的焊接金属的耐氢脆裂纹性优异的焊接钢管的制造方法从内外表面拉伸强度为850MPa以上，然后扩大或缩小用于校正的管道的尺寸，该焊接钢管的制造方法的特征在于，前述焊接金属的氢浓度为0.2 在常温下每100g 100g以下。

48. 发明授权

US06855217B2 Method of baking treatment of steel product parts 失效
标题翻译：钢制品零件烘烤处理方法
公开(公告)号：US06855217B2
公开(公告)日：2005-02-15
申请号：US10274807
申请日：2002-10-21
申请人： Takamasa Suzuki
发明人： Takamasa Suzuki
IPC分类号： C21D1/10 , C21D1/34 , C21D3/06 , C21D9/00 , C21D1/42
CPC分类号： C21D3/06 , C21D1/10 , C21D1/34 , C21D9/0093 , C21D2221/10 , Y02P10/253
摘要： The present invention relates to a method of baking treatment of steel product parts using a high frequency or ultra-high frequency for preventing delayed fracture from occurring due to diffusive hydrogen occluded in steel parts, for example, screws, bolts and the like, or for heating surface layers of the steel parts to generate a difference in temperature between the surface layers and interiors of the steel parts, thereby causing distortion in lattices, wherein the surface layers of the steel parts are rapidly heated to 100 to 300° C. with a high frequency or ultra-high frequency at 10 KHz or higher to remove the diffusive hydrogen which is involved in hydrogen embrittlement, or to transfer an existing state to non-diffusive hydrogen which is not involved in the hydrogen embrittlement.
摘要翻译：本发明涉及一种使用高频或超高频率对钢制零件进行烘烤处理的方法，用于防止由于在钢部件例如螺钉，螺栓等中吸收的扩散氢而发生延迟断裂，或者加热钢部件的表面层以产生钢部件的表面层和内部之间的温度差，从而引起晶格变形，其中钢部件的表面层被快速加热至100至300℃，其中 10KHz以上的高频或超高频以除去与氢脆化有关的扩散氢，或将现有状态转移到不涉及氢脆的非扩散氢。

49. 发明授权

US5821500A Process for manufacturing welding wire 失效
标题翻译：焊丝生产工艺
公开(公告)号：US5821500A
公开(公告)日：1998-10-13
申请号：US798929
申请日：1997-02-11
申请人： Nobuo Araki , Takeji Kagami
发明人： Nobuo Araki , Takeji Kagami
IPC分类号： B23K35/40 , C21D3/06 , C21D9/62 , B23K9/24
CPC分类号： C21D9/62 , B23K35/406 , C21D3/06
摘要： A process for manufacturing seamless flux-cored welding wires 0.8 to 4 mm in diameter with excellent cracking resistance and primer proof quality and containing very little diffusible hydrogen suited for the welding of high-tensile steels and steel structures subjected to large restraining forces by dehydrogenating by high-temperature heating comprises the steps of heating a straight wire 8 to 15 mm in diameter by direct electric heating through a first and a second pair of roll electrodes spaced 2 to 5 m apart and a ring transformer disposed therebetween to a temperature between 620.degree. and 1100.degree. C., cooling the heated wire to a temperature not higher than 500.degree. C. with a coefficient of heat transfer not higher than 250 kcal/m.sup.2 h.degree.C., and drawing to the desired diameter. The welding wire thus obtained a weld containing not more than 5 ml of diffusible hydrogen per 100 g deposited metal.
摘要翻译：制造直径为0.8〜4mm的无缝焊芯焊丝的方法，具有优异的抗开裂性和耐底漆性，并且包含极少的可扩散氢，适用于通过脱氢而受到大的约束力的高拉伸钢和钢结构的焊接高温加热包括通过直接电加热通过隔开间隔2至5微米的第一和第二对辊电极直接加热直径为8毫米直径的环形变压器和设置在其间的环形变压器到620度的步骤和1100℃，将加热丝冷却至不高于500℃的温度，传热系数不高于250kcal / m 2·h℃，并拉伸至所需直径。焊丝由此获得每100g沉积金属含有不超过5毫升可扩散氢的焊缝。

50. 发明授权

US4950336A Method of producing non-oriented magnetic steel heavy plate having high magnetic flux density 失效
标题翻译：制造具有高磁通密度的非取向磁钢重板的方法
公开(公告)号：US4950336A
公开(公告)日：1990-08-21
申请号：US368031
申请日：1989-06-19
申请人： Yukio Tomita , Ryota Yamaba , Yukio Tsuda , Katsuyoshi Yamanaka , Tatsuya Kumagai
发明人： Yukio Tomita , Ryota Yamaba , Yukio Tsuda , Katsuyoshi Yamanaka , Tatsuya Kumagai
IPC分类号： C21D3/06 , C21D8/12
CPC分类号： C21D8/1222 , C21D3/06
摘要： A method of producing non-oriented magnetic steel heavy plate that has good magnetic properties in a low magnetic field that comprises hot-rolling high-purity steel, adjusting the crystal grain size and dehydrogenation treatment, whereby the a uniform ferrite grain diameter is imparted to the steel.

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