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1. 发明授权

US5665179A Process for producing a coil spring 失效
标题翻译：螺旋弹簧的制造方法
公开(公告)号：US5665179A
公开(公告)日：1997-09-09
申请号：US507926
申请日：1995-07-27
申请人： Yoshinobu Izawa , Satoru Kondo , Hiroshi Yarita
发明人： Yoshinobu Izawa , Satoru Kondo , Hiroshi Yarita
IPC分类号： B21F35/00 , C21D1/18 , C21D7/06 , C21D8/06 , C21D9/02 , C22C38/00 , C22C38/26 , C23C8/26 , F16F1/02 , C21D1/06 , C22C38/02
CPC分类号： C21D7/06 , C21D9/02 , C23C8/26 , F16F1/021 , C21D1/18 , C21D8/06 , Y10S148/908
摘要： A process for producing a coil spring comprises steps of: cold drawing a wire comprising: C in an amount of 0.55 to 0.75% by weight; Si in an amount of 1.00 to 2.50% by weight; at least two primary metals selected from the primary metal group consisting of: Mn in an amount of 0.30 to 1.5% by weight; Ni in an amount of 1.00 to 4.00% by weight; Cr in an amount of 0.50 to 2.50% by weight; Mo in an amount of 0.10 to 1.00% by weight; at least one secondary metal selected from the secondary metal group consisting of: V in an amount of 0.05 to 0.60% by weight; Nb in an amount of 0.05 to 0.60% by weight; and the balance of substantially Fe; oil quenching and tempering the wire; hot tempering the wire, thereby preparing the tempered wire whose tensile strength .sigma.b falls in the range of from 1370 to 1670 N/mm.sup.2 ; cold coiling; hardening and tempering; grinding; gas nitriding; high strength two-stage shot peening; and low temperature annealing the tempered wire. Accordingly the present process can product the coil spring whose endurance limit .tau.m is 687.+-.560 MPa and which has high strength and high fatigue resistance without breakage.
摘要翻译：螺旋弹簧的制造方法，其特征在于，包括以下步骤：冷拉丝，其含量为0.55〜0.75重量％ Si为1.00〜2.50重量％; 选自由以下组成的一次金属组成的至少两种主要金属：Mn为0.30〜1.5重量％的量; Ni量为1.00〜4.00重量％; Cr为0.50〜2.50重量％; Mo为0.10〜1.00重量％; 选自次级金属组中的至少一种二次金属，其组成为：V = 0.05-0.60重量％; Nb为0.05〜0.60重量％; 余量基本为Fe; 油淬火回火钢丝; 对钢丝进行热回火，由此制备拉伸强度σb在1370至1670N / mm2范围内的回火丝; 冷卷硬化和回火; 研磨气体氮化高强度两级喷丸硬化; 并对回火丝进行低温退火。因此，本方法可以产生耐久极限τm为687 +/- 560MPa的螺旋弹簧，并且具有高强度和高抗疲劳性而不断裂。

2. 发明授权

US5897717A High strength spring steel and process for producing same 失效
标题翻译：高强度弹簧钢及其制造方法
公开(公告)号：US5897717A
公开(公告)日：1999-04-27
申请号：US41473
申请日：1998-03-11
申请人： Masayuki Hashimura , Masato Yanase , Taisuke Nishimura , Takashi Otowa , Hiroshi Yarita , Ikuo Ochiai , Toshio Ozone , Masaaki Mikura
发明人： Masayuki Hashimura , Masato Yanase , Taisuke Nishimura , Takashi Otowa , Hiroshi Yarita , Ikuo Ochiai , Toshio Ozone , Masaaki Mikura
IPC分类号： C21D8/06 , C21D7/13 , C21D8/00 , C21D9/02 , C22C38/00 , C22C38/24 , C22C38/26 , C22C38/22
CPC分类号： C22C38/24 , C21D7/13 , C21D8/005 , C21D9/02 , C22C38/26 , Y10S148/908
摘要： The present invention provides, at low cost, a valve spring steel having a tensile strength as high as 210 to 240 kgf/mm.sup.2 after oil tempering. The high strength spring steel comprises, based on weight, 0.65 to 0.85% of C, 1.90 to 2.40% of Si, 0.50 to 1.00% of Mn, 0.70 to 1.30% of Cr, 0.10 to 0.30% of Mo, 0.20 to 0.50% of V, 0.01 to 0.04% of Nb and the balance Fe and unavoidable impurities and is subjected to heating at temperature of 1,050 to 1,250.degree. C. and then to rolling so that carbides in the steel have a size of up to 0.15 .mu.m in terms of equivalent circle. A valve spring having a tensile strength as high as 210 to 240 kgf/mm.sup.2 after oil tempering and stabilized quality can be produced while the material cost is greatly reduced by decreasing costly alloying components as much as possible.
摘要翻译：本发明以低成本提供在回火后具有高达210至240kgf / mm2的拉伸强度的气门弹簧钢。高强度弹簧钢以C：0.65〜0.85％，Si：1.90〜2.40％，Mn：0.50〜1.00％，Cr：0.70〜1.30％，Mo：0.10〜0.30％，Mo：0.20〜0.50％的V，0.01〜0.04％的Nb，余量为Fe和不可避免的杂质，并在1050〜1250℃的温度下进行加热，然后进行轧制，使得钢中的碳化物的尺寸高达0.15μm 等效圆的术语可以制造在回火后具有高达210〜240kgf / mm2的拉伸强度且质量稳定的阀弹簧，同时尽可能地降低昂贵的合金成分，大大降低了材料成本。

3. 发明授权

US07470983B2 Semiconductor device reducing warping due to heat production 失效
标题翻译：半导体器件减少由于热量产生的翘曲
公开(公告)号：US07470983B2
公开(公告)日：2008-12-30
申请号：US10559923
申请日：2004-04-23
申请人： Yoshinari Tsukada , Kimio Hachisuka , Hiroshi Yarita , Fumitomo Takano , Yasuro Yamanaka
发明人： Yoshinari Tsukada , Kimio Hachisuka , Hiroshi Yarita , Fumitomo Takano , Yasuro Yamanaka
IPC分类号： H01L23/34 , H01L23/36 , H01L23/12 , H01L23/15 , H01L23/373
CPC分类号： H01L23/373 , H01L2924/0002 , H01L2924/00
摘要： A semiconductor device includes an intermediate layer provided between a semiconductor element and a heat sink. The intermediate layer moderates thermal stress resulting from a difference between thermal expansion of the semiconductor element and thermal expansion of the heat sink arising due to heat produced by the semiconductor element. This thermal stress moderation reduces warping of the semiconductor device as a whole.
摘要翻译：半导体器件包括设置在半导体元件和散热器之间的中间层。中间层缓和由于半导体元件的热膨胀和由于半导体元件产生的热而引起的散热器的热膨胀之间的差异导致的热应力。这种热应力调节减少了整个半导体器件的翘曲。

4. 发明授权

US6074496A High-strength oil-tempered steel wire with excellent spring fabrication property and method for producing the same 失效
标题翻译：具有优良弹簧加工性能的高强度回火钢丝及其制造方法
公开(公告)号：US6074496A
公开(公告)日：2000-06-13
申请号：US38837
申请日：1998-03-12
申请人： Hiroshi Yarita , Shouichi Suzuki , Taisuke Nishimura , Takashi Otowa
发明人： Hiroshi Yarita , Shouichi Suzuki , Taisuke Nishimura , Takashi Otowa
IPC分类号： F16F1/02 , C21D1/74 , C21D1/76 , C21D3/04 , C21D9/52 , C21D9/56 , C22C38/00 , C22C38/34 , C22C38/48 , C22C38/18
CPC分类号： C21D3/04 , C21D9/525 , C22C38/02 , C22C38/04 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/34 , C22C38/44 , C22C38/46 , C22C38/48 , C21D9/561 , Y10S148/908
摘要： A high-strength oil-tempered steel wire with excellent spring fabrication property that is made of spring low-alloy steel, having a decarburized layer of reduced hardness extending to a depth of not greater than 200 .mu.m from the wire surface, a wire surface hardness in the range from an Hv (Vickers hardness) of 420 to an Hv of 50 below the Hv of the wire interior, and an Hv at the interior of the wire beyond the depth of the decarburized layer of not less than 550. The spring low-alloy steel can preferably comprise, in weight percent, 0.45-0.80% C, 1.2-2.5% Si, 0.5-1.5% Mn, 0.5-2.0% Cr and the balance of Fe and unavoidable impurities. The method for producing the foregoing steel wire comprises the steps of continuously passing and heating a starting material low-alloy steel wire fed through a furnace body through-pipe of a continuous heating furnace for oil tempering, decarburizing the low-alloy steel wire under regulation of a dew point of a decarburizing atmosphere in the pipe by introducing into the pipe from its inlet side or a desired intermediate point thereof hydrogen gas or a mixed gas of hydrogen gas and an inert gas and, to form steam by reaction therewith, oxygen gas or an oxygen-containing gas and controlling the amount of oxygen gas or oxygen-containing gas introduced, and thereafter quenching and annealing the low-alloy steel wire.
摘要翻译：一种由弹簧低合金钢制成的具有优异的弹簧加工性能的高强度油回火钢丝，具有从线表面延伸到不大于200μm的深度的硬度降低的脱碳层，线表面硬度在420以下的Hv（维氏硬度）至Hv的50v以下，并且超过脱碳层深度的钢丝内部的Hv不小于550.弹簧低合金钢可优选包含重量百分比为0.45-0.80％C，1.2-2.5％Si，0.5-1.5％Mn，0.5-2.0％Cr，余量为Fe和不可避免的杂质。上述钢丝的制造方法包括以下步骤：连续加热通过用于回火的连续加热炉的炉体通管的原料低合金钢丝，对低合金钢丝进行调质脱碳通过从其入口侧或期望的中间点将氢气或氢气和惰性气体的混合气体引入到管中，并通过与其反应而形成蒸汽，从而使管道中的脱碳气氛的露点或含氧气体，并控制引入的氧气或含氧气体的量，然后对低合金钢丝进行淬火和退火。

5. 发明申请

US20060145334A1 Semiconductor device 失效
标题翻译：半导体器件
公开(公告)号：US20060145334A1
公开(公告)日：2006-07-06
申请号：US10559923
申请日：2004-04-23
申请人： Yoshinari Tsukada , Kimio Hachisuka , Hiroshi Yarita , Fumitomo Takano , Ysuro Yamanaka
发明人： Yoshinari Tsukada , Kimio Hachisuka , Hiroshi Yarita , Fumitomo Takano , Ysuro Yamanaka
IPC分类号： H01L23/34
CPC分类号： H01L23/373 , H01L2924/0002 , H01L2924/00
摘要： A semiconductor device includes an intermediate layer provided between a semiconductor element and a heat sink. The intermediate layer moderates thermal stress resulting from a difference between thermal expansion of the semiconductor element and thermal expansion of the heat sink arising due to heat produced by the semiconductor element. This thermal stress moderation reduces warping of the semiconductor device as a whole.
摘要翻译：半导体器件包括设置在半导体元件和散热器之间的中间层。中间层缓和由于半导体元件的热膨胀和由于半导体元件产生的热而引起的散热器的热膨胀之间的差异导致的热应力。这种热应力调节减少了整个半导体器件的翘曲。

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