公开(公告)号：EP2896712A4

公开(公告)日：2016-04-27

申请号：EP13837663

申请日：2013-09-05

申请人： NHK SPRING CO LTD

发明人： ONO YUITIROU ,  SHIRAISHI TOHRU ,  ONO YOSHIKI ,  TAKAHASHI KEITA

IPC分类号： C22C38/00 ,  B21F3/02 ,  B21F35/00 ,  B24C1/10 ,  B24C11/00 ,  C21D1/06 ,  C21D7/06 ,  C21D8/06 ,  C21D9/02 ,  C22C38/04 ,  C22C38/54 ,  C23C8/22 ,  C23C8/80 ,  F16F1/06

CPC分类号： F16F1/021 ,  B21F3/02 ,  B21F35/00 ,  B24C1/10 ,  C21D1/06 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D7/06 ,  C21D8/065 ,  C21D9/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/18 ,  C22C38/22 ,  C22C38/24 ,  C22C38/34 ,  C22C38/46 ,  C23C8/02 ,  C23C8/22 ,  C23C8/80 ,  F16F1/06 ,  F16F2224/0216 ,  F16F2226/00 ,  F16F2236/04 ,  F16F2238/026

摘要： Tensile residual stress due to coiling processing is solved and appropriate compressive residual stress distribution is imparted by forming C-condensed layer at the wire material surface, so that compression coil spring having high durability is produced by using inexpensive wire material in the method for production of the present invention. The coil spring includes steel wire material containing 0.45 to 0.80 weight% of C, 0.15 to 2.50 weight% of Si, 0.3 to 1.0 weight% of Mn and iron and inevitable impurities as the remainder, and having a circle equivalent diameter of 2.5 mm to 10 mm, in which internal hardness at a freely selected cross section of the wire material is in a range of 570 to 700 Hv, C-condensed layer which exceeds average concentration of C contained in the steel wire material exists at surface layer part, and in an approximate maximum principal stress direction generated when a compressive load is loaded on spring of inner diameter side of the coil spring of the wire material, unloaded compressive residual stress at a depth of 0.2 mm and 0.4 mm from surface of the wire material is not less than 200 MPa and not less than 60 MPa, respectively.

摘要翻译： 通过在线材表面形成C缩合层来解决由于卷取加工而产生的拉伸残余应力，并且通过在线材表面形成C型冷凝层来赋予适当的压缩残余应力分布，从而通过在生产方法中使用便宜的线材制造具有高耐久性的压缩螺旋弹簧 本发明。 螺旋弹簧包括含有C：0.45〜0.80重量％，Si：0.15〜2.50重量％，Mn：0.3〜1.0重量％，余量不可避免的杂质的钢丝材料，圆当量直径为2.5毫米 10mm，其中线材自由选择的横截面的内部硬度在570〜700Hv的范围内，超过钢丝材料中含有的C的平均浓度的C缩合层存在于表层部， 当在线材的螺旋弹簧的内径侧的弹簧上施加压缩载荷时产生的近似最大主应力方向，在距离线材表面0.2cm深度和0.4mm深度处的无载荷的压缩残余应力不是 分别小于200MPa且不小于60MPa。

公开(公告)号：EP2719782A4

公开(公告)日：2015-03-04

申请号：EP12797338

申请日：2012-04-27

申请人： NHK SPRING CO LTD

发明人： SHIRAISHI TOHRU ,  ONO YOSHIKI ,  ARAOKA YUJI

IPC分类号： C22C1/04 ,  A61C8/00 ,  B22F3/20 ,  B22F3/24 ,  B22F9/04 ,  C22C1/00 ,  C22C14/00 ,  C23C8/24

CPC分类号： C22C14/00 ,  A61L27/06 ,  B22F1/0088 ,  B22F3/03 ,  B22F3/10 ,  B22F3/14 ,  B22F2003/208 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/0458 ,  C22F1/183 ,  C23C8/24 ,  C23C8/80 ,  B22F2201/02 ,  B22F9/06 ,  B22F1/004 ,  B22F2201/20 ,  B22F1/0003 ,  B22F3/15 ,  B22F3/105 ,  B22F3/20

摘要： A titanium alloy member with high strength and high proof stress not only in the surface but also inside, using a general and inexpensive ±-² type titanium alloy, and a production method therefor, are provided. The production method includes preparing a raw material made of titanium alloy, nitriding the raw material to form a nitrogen-containing raw material by generating a nitrogen compound layer and/or a nitrogen solid solution layer in a surface layer of the raw material, mixing the raw material and the nitrogen-containing raw material to yield a nitrogen-containing mixed material, sintering the nitrogen-containing mixed material to obtain a sintered titanium alloy member by bonding the material together and uniformly diffusing nitrogen in solid solution from the nitrogen-containing raw material to the entire interior portion of the sintered titanium alloy member, and hot plastic forming the sintered titanium alloy member.

摘要翻译： 提供了一种使用普通且廉价的±2型钛合金的强度高且不仅在表面而且内部具有高强度和高应力的钛合金构件及其制造方法。 制造方法包括：制备由钛合金制成的原料，通过在原料的表面层中产生氮化合物层和/或氮固溶体层，将原料渗氮以形成含氮原料，将 原料和含氮原料，得到含氮混合材料，烧结含氮混合材料，通过将该材料粘合在一起并将固氮中的氮均匀地从含氮原料 烧结钛合金构件的整个内部的材料，以及形成烧结钛合金构件的热塑性材料。

公开(公告)号：EP2840155A4

公开(公告)日：2016-01-20

申请号：EP13778444

申请日：2013-03-29

申请人： NHK SPRING CO LTD

发明人： ARAOKA YUJI ,  SHIRAISHI TOHRU ,  ONO YOSHIKI

IPC分类号： C22C23/00 ,  B21C23/00 ,  B22D11/00 ,  B22D11/01 ,  B22D11/06 ,  B22D21/04 ,  C22C1/02 ,  C22F1/06

CPC分类号： C22C23/06 ,  B21C23/001 ,  B21C23/005 ,  B22D11/005 ,  B22D11/0611 ,  B22D21/007 ,  B22F3/10 ,  B22F3/20 ,  B22F3/24 ,  B22F5/12 ,  B22F2998/10 ,  C21D7/00 ,  C21D7/06 ,  C21D8/06 ,  C22C1/02 ,  C22C1/0408 ,  C22C23/00 ,  C22C23/02 ,  C22F1/06 ,  Y02P10/212 ,  Y10T428/12 ,  Y10T428/12993 ,  B22F9/08 ,  B22F3/17 ,  B22F2003/166 ,  B22F3/18

摘要： A high-strength magnesium alloy member is suitable for products in which at least one of bending stress and twisting stress primarily acts. The member has required elongation and 0.2 % proof stress, whereby strength and formability are superior, and has higher strength and large compressive residual stress in the vicinity of the surface of a wire rod. In the magnesium alloy member formed as a wire rod in which at least one of bending stress and twisting stress primarily acts, the wire rod includes a surface portion having the highest hardness of 170 HV or more in the vicinity of the surface and an inner portion having a 0.2 % proof stress of 550 MPa or more and an elongation of 5 % or more, and the wire rod has the highest compressive residue stress in the vicinity of the surface of 50 MPa or more.

摘要翻译： 高强度镁合金构件适用于主要作用弯曲应力和扭转应力中至少一种的产品。 该构件需要伸长率和0.2％的弹性应力，由此强度和成形性优异，并且在线材表面附近具有较高的强度和较大的压缩残余应力。 在形成为弯曲应力和扭转应力中的至少一种主要作用的线材的镁合金构件中，线材包括在表面附近具有最高硬度为170HV或更高的表面部分， 具有550MPa以上的0.2％屈服应力和5％以上的伸长率，并且线材在表面附近具有最高的压缩残余应力为50MPa以上。

公开(公告)号：EP1132490A4

公开(公告)日：2005-04-13

申请号：EP00951939

申请日：2000-08-10

申请人： NHK SPRING CO LTD

发明人： TAKEHANA TOSHIHIRO ,  KATSUYA AKIHIRO ,  SHIRAISHI TOHRU

IPC分类号： B22D18/02 ,  B22D19/00 ,  B22D19/14 ,  B22F1/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/18 ,  C22C49/14 ,  F02B23/06 ,  F02F3/04

CPC分类号： B22F1/004 ,  B22D18/02 ,  B22D19/0027 ,  B22D19/14 ,  B22F2003/248 ,  C22C38/02 ,  C22C38/06 ,  C22C38/18 ,  C22C49/14 ,  F02B23/0672 ,  F02F3/045 ,  F05C2201/021 ,  F05C2251/042 ,  F05C2253/16 ,  Y02T10/125 ,  Y10T428/12486 ,  Y10T428/12757 ,  Y10T428/12958 ,  Y10T428/249927

摘要： A metal matrix composite (4) constitutes a part of a piston (1). The metal matrix composite (4) is comprised of a matrix comprising a light metal alloy and, incorporated therein, a reinforcing material comprising a metal fiber, wherein the reinforcing material contains Fe and Cr as main components and also contains at least one of Al and Si, the content of Cr being 5 to 30 % and the content of the at least one of Al and Si being 3 to 10 %, and the metal fiber has a diameter of ζ 20 νm to ζ100 νm. The reinforcing material is formed by the molten metal extraction method and has irregularities on its circumferential surface. The solution treatment for the metal matrix composite (4) is carried out in a temperature range of 470 °C to 500 °C for suppressing the formation of an intermetallic compound.

公开(公告)号：EP3059025A4

公开(公告)日：2017-06-28

申请号：EP14854805

申请日：2014-10-08

申请人： NHK SPRING CO LTD

发明人： TAKAHASHI KEITA ,  SHIRAISHI TOHRU ,  ONO YUICHIRO ,  NAGASAWA KAORU

IPC分类号： B21F35/00 ,  B21F3/06 ,  B21F11/00

CPC分类号： B21F35/00 ,  B21F3/06 ,  B21F11/005 ,  B21F23/00 ,  B21F99/00 ,  H05B6/101

摘要： A spring forming device in which the steel wire can be continuously cut off without stopping the feeding of the steel wire in cutting, and in which the steel wire can be uniformly heated, is provided. The spring forming device has a wire supplying mechanism for supplying a steel wire using a plurality of feeding rollers, a heating mechanism for heating the steel wire, a coiling mechanism for forming in a coil state the heated steel wire, and a cutting mechanism for cutting the steel wire coiled at a given number of turns off the steel wire remained backward. A cutting blade of the cutting mechanism follows tracks having a speed Va that moves to the receiving blade and a speed Vc that moves in an axial direction of the coiled steel wire, in cutting of the steel wire.

摘要翻译： 本发明提供一种弹簧成形装置，其能够在不停止切断钢丝的供给的同时连续切断钢丝，并且能够均匀加热钢丝。 该弹簧成形装置具有用于供给使用多个供给辊的钢丝的供丝机构，对钢丝进行加热的加热机构，将加热后的钢丝以线圈状态成形的卷取机构，以及切断机构 在给定的钢丝匝数下盘绕的钢丝保持向后。 在切割钢丝时，切割机构的切割刀片跟随具有移动到接收刀片的速度Va的轨道和沿着盘绕钢丝的轴向移动的速度Vc。

公开(公告)号：EP2607507A4

公开(公告)日：2015-09-23

申请号：EP11818260

申请日：2011-08-15

申请人： NHK SPRING CO LTD

发明人： ARAOKA YUJI ,  SHIRAISHI TOHRU ,  ONO YOSHIKI

IPC分类号： C22C1/04 ,  B22F1/00 ,  B22F3/14 ,  B22F3/24 ,  B22F9/04 ,  C22C14/00 ,  C22F1/00 ,  C22F1/18 ,  C23C8/24

CPC分类号： C22C14/00 ,  B22F1/004 ,  B22F1/0081 ,  B22F1/0088 ,  B22F3/14 ,  B22F3/24 ,  B22F2003/248 ,  C22C47/14 ,  C22C49/11 ,  C22F1/183 ,  C23C8/02 ,  C23C8/24 ,  C23C8/80

摘要： A titanium alloy material having high overall strength is produced by applying nitrogen to ±-² type titanium alloys that are widely used. A production method for a titanium alloy member includes preparing a titanium alloy material for sintering as a raw material of a sintered body; nitriding the titanium alloy material for sintering, thereby forming a nitrogen compound layer and/or a nitrogen solid solution layer in a surface layer of the titanium alloy material for sintering and yielding a nitrogen-containing titanium alloy material for sintering; mixing the titanium alloy material for sintering and the nitrogen-containing titanium alloy material for sintering, thereby yielding a titanium alloy material for sintering mixed with nitrogen-containing titanium alloy material; sintering the titanium alloy material for sintering mixed with nitrogen-containing titanium alloy material, thereby bonding the material each other and dispersing nitrogen contained in the nitrogen-containing titanium alloy material for sintering in a condition in which nitrogen is uniformly dispersed into an entire inner portion of the sintered body by solid solution.

摘要翻译： 通过将氮施加到广泛使用的±2型钛合金上来制造具有高整体强度的钛合金材料。 钛合金构件的制造方法包括制备用于烧结的钛合金材料作为烧结体的原料; 氮化钛合金材料进行烧结，从而在钛合金材料的表面层中形成氮化合物层和/或氮固溶体层，用于烧结并产生用于烧结的含氮钛合金材料; 混合用于烧结的钛合金材料和用于烧结的含氮钛合金材料，从而产生用含氮钛合金材料混合的烧结钛合金材料; 烧结与含氮钛合金材料混合的钛合金材料，由此将材料彼此粘合并将氮气均匀分散在氮气均匀分散的状态下分散在整个内部的氮含量的钛合金材料中分散氮 的烧结体。

公开(公告)号：EP2743366A4

公开(公告)日：2016-06-22

申请号：EP12822031

申请日：2012-07-26

申请人： NHK SPRING CO LTD

发明人： IKAI KAZUYA ,  SHIRAISHI TOHRU ,  ONO YUICHIRO ,  ONO YOSHIKI

IPC分类号： C22C38/04 ,  B21F35/00 ,  B24C1/10 ,  C21D7/06 ,  C21D8/06 ,  C21D9/02 ,  C22C38/02 ,  C22C38/18 ,  C22C38/24 ,  C22C38/34 ,  C22C38/46 ,  C22C38/54 ,  F16F1/02 ,  F16F1/06

CPC分类号： F16F1/021 ,  B21F35/00 ,  B24C1/10 ,  C21D7/06 ,  C21D8/065 ,  C21D9/02 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/24 ,  C22C38/34 ,  C22C38/46 ,  F16F1/06

摘要： By giving an appropriate compressive residual stress to a wire material, a compression coil spring having high durability can be provided even using an inexpensive wire material. The present invention provides a compression coil spring formed by using a steel wire material, the steel wire material consisting of C: 0.45 to 0.85 mass%, Si: 0.15 to 2.5 mass%, Mn: 0.3 to 1.0 mass%, Fe and inevitable impurities as a remainder, and a circle-equivalent diameter of 1.5 to 9.0 mm, wherein hardness of a freely selected cross-section of the wire material is 570 to 700 HV, and at an inner diameter side of the coil spring, unloaded compressive residual stress at a depth of 0.2 mm from a surface in an approximate maximal main stress direction in a case in which compressive load is loaded on the spring is 200 MPa or more, and unloaded compressive residual stress at a depth of 0.4 mm from surface is 100 MPa or more.

公开(公告)号：EP2719781A4

公开(公告)日：2015-04-29

申请号：EP12796078

申请日：2012-04-27

申请人： NHK SPRING CO LTD

发明人： SHIRAISHI TOHRU ,  ONO YOSHIKI ,  ARAOKA YUJI

IPC分类号： C22C1/04 ,  A61L27/00 ,  B22F3/24 ,  B22F9/04 ,  B24C1/10 ,  C22C14/00 ,  C22F1/00 ,  C22F1/18

CPC分类号： B22F1/0081 ,  A61L27/06 ,  B22F3/24 ,  B22F2998/10 ,  C22C1/0458 ,  C22C14/00 ,  C22F1/183 ,  C23C8/80 ,  C23C26/00 ,  B22F1/0088 ,  B22F1/0003 ,  B22F3/10 ,  B22F3/14 ,  B22F3/15 ,  B22F3/105

公开(公告)号：EP2628813A4

公开(公告)日：2014-06-18

申请号：EP11832618

申请日：2011-10-14

申请人： NHK SPRING CO LTD

发明人： ARAOKA YUJI ,  SHIRAISHI TOHRU ,  ONO YOSHIKI

IPC分类号： C22C23/06 ,  B22F3/14 ,  B22F3/20 ,  C22C23/00

CPC分类号： C22C23/00 ,  B22F3/20 ,  B22F3/24 ,  B22F5/12 ,  B22F2998/00 ,  B22F2998/10 ,  C22C23/06 ,  C22F1/06 ,  B22F2303/01 ,  B22F2301/058 ,  B22F9/08 ,  B22F3/10

摘要： A high-strength magnesium alloy wire rod suitable for products in which at least one of bending stress and twisting stress primarily acts is provided. The wire rod has required elongation and 0.2 % proof stress, whereby strength and formability are superior, and has higher strength in the vicinity of the surface. In the wire rod, the surface portion has the highest hardness in a cross section of the wire rod, the highest hardness is 170 HV or more, and the inner portion has a 0.2 % proof stress of 550 MPa or more and an elongation of 5% or more.