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    • 33. 发明申请
    • LOW-PRESSURE LOOP EGR DEVICE
    • 低压循环EGR装置
    • US20130283788A1
    • 2013-10-31
    • US13823320
    • 2011-11-08
    • Yuji Kobayashi
    • Yuji Kobayashi
    • F02M25/07
    • F04D29/684F02B37/00F02M26/06F02M26/09F02M26/17F02M26/19F02M35/10157F02M35/10222F04D29/4213F05D2260/14Y02T10/144Y02T10/146
    • An axis (45c) of an EGR pipe (45) on an outlet end side three-dimensionally crosses an axis (29c) of an intake pipe (29) so as to create inside the intake pipe (29) a swirl flow of an EGR gas having a swirling component in the same direction as a rotating direction of a compressor impeller (17). The EGR pipe (45) includes an EGP flow restricting portion (53) which is provided with a flow passage area gradually reduced toward the intake pipe (29), in its outlet end side portion. A downstream flow restricting portion (55) is formed at a portion in the intake pipe (29) on an immediately downstream side of a junction with the EGR pipe (45). The downstream flow restriction portion (55) has a flow passage area which becomes gradually smaller toward the compressor (13).
    • 出口端侧的EGR管(45)的轴线(45c)三维地与进气管(29)的轴线(29c)交叉,以在进气管(29)的内侧形成涡轮流 具有与压缩机叶轮(17)的旋转方向相同的方向的旋转部件的气体。 EGR管(45)具有在其出口端侧部分设置有朝向吸入管(29)逐渐减小的流路面积的EGP流量限制部(53)。 下游流动限制部分(55)形成在与EGR管(45)的连接处的紧下游侧的进气管(29)的一部分处。 下游侧流通限制部55具有朝向压缩机13逐渐变小的流路面积。
    • 35. 发明申请
    • METHOD OF SHOT-PEENING TREATMENT OF STEEL PRODUCT
    • 钢铁产品处理方法
    • US20120180539A1
    • 2012-07-19
    • US13498453
    • 2010-09-15
    • Yuji Kobayashi
    • Yuji Kobayashi
    • B24C1/10B23Q15/22G01N27/90
    • B24C1/10B24C1/086B24C11/00C21D7/06C23C8/80
    • The present invention aims to provide a method of shot-peening treatment that substantially improves the durability (particularly, heat check resistance) of the treated surface of the steel products in the process of treating by shot peening (hereafter, “SP”) the surface of the steel product that is the work to be treated and that was treated by heat hardening.The SP treatment of the present invention that gives the SP treatment to the steel product that was heat-treated and that is a work to be treated comprises the first SP treatment that removes the compound layer (white layer) and a second SP treatment that gives compressive residual stress to the first SP treated surface that was treated by the first SP treatment where the second SP treatment is carried out only to the products where it has been proved by the non-destructive inspection that the compound layers are removed by the first SP treatment.
    • 本发明的目的在于提供一种喷丸处理方法,其特征在于提高了在喷丸硬化处理(以下称为“SP”)表面处理钢板的处理表面的耐久性(特别是耐热性) 的钢铁产品是待处理的工件,通过热硬化处理。 对被热处理的钢产品进行SP处理的本发明的SP处理是被除去化合物层(白色层)的第一SP处理和给出 通过第一SP处理处理的第一SP处理的第一SP处理表面的压缩残余应力,仅进行第二次SP处理的产品,通过非破坏性检查证明化合物层被第一SP除去 治疗。
    • 37. 发明申请
    • CARBURIZED COMPONENT AND MANUFACTURING METHOD
    • 加固组件和制造方法
    • US20120085465A1
    • 2012-04-12
    • US13304733
    • 2011-11-28
    • Yutaka NeishiTakanari HamadaHidekazu SuenoYuji KobayashiHideaki Sugiura
    • Yutaka NeishiTakanari HamadaHidekazu SuenoYuji KobayashiHideaki Sugiura
    • C23C8/22C22C38/32C22C38/22C22C38/44C22C38/20C22C38/02
    • C23C8/20C21D1/06C21D7/06C21D9/28C21D9/32C21D9/40C23C8/44C23C8/64
    • A carburized component with improved fatigue strength has a base steel containing, by mass %, C: 0.15-0.25%, Si: 0.03-0.50%, Mn: more than 0.60% and not more than 1.5%, P≦0.015%, S: 0.006-0.030%, Cr: 0.05-2.0%, Al≦0.10%, N≦0.03%, and O≦0.0020%, and optionally at least one element selected from Mo, Cu, Ni, B, Ti, Nb and V, the balance being Fe and impurities. A surface hardened layer portion satisfies: (a) average carbon concentration in the region from the outermost surface to a point of 0.2 mm depth of 0.35-0.60 mass %, (b) surface roughness Rz≦15 μm, and (c) σr(0)≦-800 MPa, σr(100)≦-800 MPa, and residual stress intensity index Ir≦80000, wherein Ir is calculated by [Ir=∫|σr(y)|dy], where y μm is the depth from the outermost surface and σr(y) is the residual stress for the points from the outermost surface to a depth of 100 μm with the range of y from 0 to 100 (μm).
    • 具有改善的疲劳强度的渗碳部件具有以质量%计含有C:0.15-0.25%,Si:0.03-0.50%,Mn:大于0.60%且不大于1.5%的基础钢,P< L; 0.015%,S :0.006-0.030%,Cr:0.05-2.0%,Al< N1; 0.10%,N< NlE; 0.03%,O< E; 0.0020%,以及任选的至少一种选自Mo,Cu,Ni,B,Ti,Nb和V ,余量为Fe和杂质。 表面硬化层部分满足:(a)从最外表面到0.2mm深度的区域的平均碳浓度为0.35-0.60质量%,(b)表面粗糙度Rz< ll;15μm,(c)&sgr; r(0)≦̸ -800MPa,&sgr; r(100)≦̸ -800MPa,残余应力强度指数Ir≦̸ 80000,其中Ir由[Ir =∫|&sgr; r(y)| dy] ,其中yμm是从最外表面的深度,并且r(y)是从最外表面到100μm深度的点的残余应力,y的范围为0至100(μm)。
    • 38. 发明授权
    • Method for shot peening
    • 喷丸硬化方法
    • US08151613B2
    • 2012-04-10
    • US12745156
    • 2008-11-21
    • Ryohei IshikuraTakashi KanoMakio KatoYuji KobayashiSatoru UjihashiKiyoshi Okumura
    • Ryohei IshikuraTakashi KanoMakio KatoYuji KobayashiSatoru UjihashiKiyoshi Okumura
    • C21D7/06F16H55/17
    • B24C1/10B24C1/086C21D1/26C21D7/06C21D2211/001C21D2211/008Y10T29/479
    • The object of the present invention is to provide a method for shot peening by which a compressive residual stress that is higher than any achieved by the conventional method can be achieved while the thickness of the processed material that is scraped is suppressed. The method is characterized in that the shot materials are shot against the processed material that has the hardness of 750 HV or more that is calculated from equations (1) to (3) below. The shot materials have Vickers hardness that is higher than the hardness of the processed material by 50 HV to 250 HV. The thickness of the processed material that is to be scraped is suppressed to 5 μm or less. HV(m)={f(C)−f(T,t)}(1−γR/100)+400×γR/100  Equation (1) f(C)=−660C2+1373C+278  Equation (2) f(T,t)=0.05T(log t+17)−318  Equation (3) where C denotes the C (carbon) content in the surface layer that is achieved by carburizing (mass %), T denotes the tempering temperature (K), t denotes the tempering time (hr), and γR denotes the amount of residual austenite (vol. %).
    • 本发明的目的是提供一种用于喷丸硬化的方法,通过该方法可以获得高于通过常规方法实现的压缩残余应力,同时抑制被刮除的被处理材料的厚度。 该方法的特征在于,针对由下述等式(1)至(3)计算的具有750HV或更高的硬度的处理材料进行喷丸处理。 喷丸材料的维氏硬度比加工材料的硬度高50HV至250HV。 要被刮削的被处理材料的厚度被抑制在5μm以下。 HV(m)= {f(C)-f(T,t)}(1-γR/ 100)+ 400×γR/ 100等式(1)f(C)= - 660C2 + 1373C + f(T,t)= 0.05T(log t + 17)-318等式(3)其中C表示通过渗碳实现的表面层中的C(碳)含量(质量%),T表示回火温度 K),t表示回火时间(hr),γR表示残留奥氏体量(体积%)。