公开(公告)号：US6063218A

公开(公告)日：2000-05-16

申请号：US103915

申请日：1993-08-10

申请人： Tomoki Muraoka ,  Masayuki Kobayashi

发明人： Tomoki Muraoka ,  Masayuki Kobayashi

IPC分类号： C21D6/00 ,  C21D9/40 ,  C22C38/00 ,  C22C38/18 ,  C22C38/32 ,  F16C19/00 ,  F16C33/12 ,  F16C33/30 ,  F16C33/62 ,  F16C33/64 ,  B21K1/02 ,  F16C17/00

CPC分类号： C22C38/32 ,  C22C38/18 ,  F16C33/121 ,  F16C33/30 ,  F16C33/62 ,  F16C33/64 ,  Y10S148/906

摘要： In a method of manufacturing a bearing, a high-frequency hardened steel essentially containing the following elements in the following percentage by weight is employed as the material of at least one of the outer and inner races of the bearing which is drilled,C; 0.5 to 0.65%, Si; 0.07 to 0.15%,Mn; 0.05 to 0.35%, Cr; 0.25 to 0.55%, andB; 0.0035% or less,a workpiece 10 Hv 230 in maximum hardness is formed with the high-frequency hardened steel subjected to hot forging, a part of the workpiece where a hole 12 is to be formed is drilled, and a part of the workpiece 10 where a track 14 is formed is subjected to high-frequency hardening until it becomes at least Hv 653 in hardness. The workpiece formed with the steel material subjected to hot forging is not larger than Hv 230 in maximum hardness. Hence, the workpiece can be drilled without reduction of the service life of the drilling tool, and the track region of the bearing has a hardness value which is practical in use.

摘要翻译： 在制造轴承的方法中，采用基本上含有以下重量百分比的以下元素的高频淬火钢作为钻孔轴承的外圈和内圈中的至少一个，C; 0.5〜0.65％，Si; 0.07〜0.15％，Mn： 0.05〜0.35％，Cr： 0.25〜0.55％，B： 0.0035％以下，通过进行热锻造的高频硬化钢形成最大硬度的工件10Hv230，钻出要形成孔12的工件的一部分，将工件10的一部分 其中形成轨道14经受高频硬化，直到硬度至少为653赫兹。 由热锻造的钢材形成的工件的最大硬度不大于Hv 230。 因此，可以在不降低钻具的使用寿命的情况下钻削工件，并且轴承的轨道区域具有在使用中实用的硬度值。

公开(公告)号：US4871268A

公开(公告)日：1989-10-03

申请号：US143389

申请日：1988-01-13

申请人： Kyozaburo Furumura ,  Tomoki Muraoka ,  Yasuo Murakami ,  Tsutomu Abe

发明人： Kyozaburo Furumura ,  Tomoki Muraoka ,  Yasuo Murakami ,  Tsutomu Abe

IPC分类号： F16C33/32 ,  C22C38/44 ,  F16C33/34 ,  F16C33/62

CPC分类号： F16C33/32 ,  C22C38/44 ,  F16C33/62 ,  F16C2240/18 ,  Y10S148/906 ,  Y10S384/912 ,  Y10T428/30

摘要： A rolling bearing has an inner race, an outer race and a roller, at least one of the inner race, outer race and roller being made with an alloy steel consisting of two or more of 0.2 to 1.7% by weight of Mn, 0.2 to 1.2% by weight of Si, 0.2 to 1.7% by weight of Cr, 0.1 to 0.3% by weight of Mo and 0.1 to 1.0% by weight of Ni, 0.4 to 0.7% by weight of C and the balance of Fe, and by subjecting the alloy steel to carburizing hardening to obtain(a) an additional carbon content at the surface portion of 0.35 to 0.6% by weight and(b) a dissolved carbon content at the surface portion of 0.75 to 1.1% by weight, and having:(c) a hardness at the core portion as H.sub.R C of 57 to 64 and(d) a difference in hardness between the surface portion and the core portion within .+-.5 of H.sub.R C.

摘要翻译： 滚动轴承具有内圈，外圈和滚子，所述内圈，外圈和滚子中的至少一个由合金钢制成，所述合金钢由0.2重量％〜1.7重量％的Mn，0.2〜 1.2重量％的Si，0.2〜1.7重量％的Cr，0.1〜0.3重量％的Mo和0.1〜1.0重量％的Ni，0.4〜0.7重量％的C，余量为Fe， 对合金钢进行渗碳硬化，得到（a）表面部分的附加碳含量为0.35〜0.6重量％，（b）表面部分的溶解碳含量为0.75〜1.1重量％，具有： （c）核心部分的硬度为HRC为57至64，（d）表面部分和芯部分之间的硬度差在HRC的±5内。

公开(公告)号：US5077003A

公开(公告)日：1991-12-31

申请号：US430876

申请日：1989-11-02

申请人： Tomoki Muraoka ,  Kiyoshi Hirakawa

发明人： Tomoki Muraoka ,  Kiyoshi Hirakawa

IPC分类号： C22C38/18 ,  C22C38/22 ,  C22C38/32 ,  C22C

CPC分类号： C22C38/18 ,  C22C38/22 ,  C22C38/32 ,  F16C33/62 ,  F16C33/64 ,  F16C19/06 ,  Y10S148/906 ,  Y10S384/912

摘要： A rolling-part steel and a rolling part employing same are disclosed. The steel includes: C; 0.1 to 0.7 wt. %, Si; below or equal to 0.04 wt. %; Mn; below or equal to 1.0 wt. %, Cr; 0.2 to 1.0 wt. %, S; below or equal to 0.003 wt. %; P; below or equal to 0.025 wt. %, O; below or equal to 0.0015 wt. %, the reminder Fe, and a necessary impurity. The steel has a good plastic-workability such that the rolling part can be produced only by plastic working. The steel also has a good hardenability.

摘要翻译： 公开了一种轧制部分钢和使用它的滚动部件。 钢包括：C; 0.1〜0.7重量％ ％，Si; 低于或等于0.04wt。 ％; 锰; 低于或等于1.0wt。 ％，Cr; 0.2〜1.0重量％ ％，S; 低于或等于0.003wt。 ％; P; 低于或等于0.025wt。 ％，O; 低于或等于0.0015wt。 ％，提醒Fe和必需的杂质。 钢具有良好的塑性加工性，使得轧制部仅能通过塑性加工制造。 钢也具有良好的淬透性。

公开(公告)号：US5542991A

公开(公告)日：1996-08-06

申请号：US251267

申请日：1994-05-31

申请人： Tomoki Muraoka ,  Tsutomu Abe ,  Kazuhiro Kobayashi ,  Kenichi Hosoda

发明人： Tomoki Muraoka ,  Tsutomu Abe ,  Kazuhiro Kobayashi ,  Kenichi Hosoda

IPC分类号： B21C1/00 ,  C22C38/32 ,  F16C29/00 ,  F16C33/62

CPC分类号： F16C29/005 ,  C22C38/32 ,  F16C33/62

摘要： A rail for a linear motion guide bearing is fabricated by using a steel which contains C in a range of from 0.56 to 1.0% by weight, Si in a range of up to 0.15% by weight, Mn in a range from 0.20 to 0.40% by weight, Cr in a range of from 0.30 to 0.70% by weight, and B in a range of from 0.0005 to 0.0035% by weight, whereby the hardness of the track surface of the resultant rail is higher than a Vickers hardness of 700, and the die is not decreased in service 1 life by the cold-drawing of the steel.

摘要翻译： 用于直线运动导轨轴承的轨道是通过使用含有C在0.56至1.0重量％范围内的Si，至多0.15重量％的Si，0.20至0.40重量％的Mn， 的Cr在0.30〜0.70重量％的范围内，B在0.0005〜0.0035重量％的范围内，由此所得轨道的轨道表面的硬度高于维氏硬度700， 并且通过钢的冷拉拔，模具的寿命不会降低。

公开(公告)号：US5013525A

公开(公告)日：1991-05-07

申请号：US442259

申请日：1989-11-28

申请人： Kaneaki Hamada ,  Kazuichi Tsubota ,  Tomoki Muraoka

发明人： Kaneaki Hamada ,  Kazuichi Tsubota ,  Tomoki Muraoka

IPC分类号： C22C38/00 ,  C22C38/18 ,  C22C38/22 ,  F16C33/30

CPC分类号： F16C33/62 ,  C22C38/18 ,  Y10S148/906

摘要： The present invention provides a steel for a corrosion-resistant rolling part having excellent corrosion resistance, high quenching and tempering hardness, and excellent workability for use in linear bearings, ball screws and rolling bearings of industrial machinery which must be strictly prevented from undergoing environmental contamination due to oil and grease. The steel comprises 0.5% or more and 0.7% or less by weight of carbon, 0.1% or more and 1.5% or less by weight of silicon, 0.1% or more and 2.0% or less by weight of manganese, 3.0% or more and less than 6.0%, preferably 4.0% or more and 5.5% or less, by weight of chromium, 0.05% or less by weight of phosphorus, 0.03% or less, preferably 0.01% or less, by weight of sulfur and 0.0015% or less by weight of oxygen, and may further comprise at least one of 0.05% or more and 2.0% or less, preferably 0.05% or more and 1.0% or less, by weight of molybdenum and 0.1% or more and 0.8% or less, preferably 0.2% or more and 0.8% or less, by weight of copper, with the balance being iron and unavoidable impurities.

摘要翻译： 本发明提供一种耐腐蚀性优良的钢，具有优良的耐腐蚀性，高淬火回火硬度，以及用于工业机械的直线轴承，滚珠丝杠和滚动轴承的加工性能，必须严格防止其受到环境污染 由于油和油脂。 钢含有0.5重量％以上0.7重量％以下的碳，0.1重量％以上1.5重量％以下的硅，0.1重量％以上2.0重量％以下的锰，3.0重量％以上， 小于6.0重量％，优选4.0重量％以上5.5重量％以下的铬，0.05重量％以下的磷，0.03重量％以下，优选为0.01重量％以下，优选为0.01重量％以下，0.0015重量％以下。 的氧，并且还可以包含0.05重量％以上且2.0重量％以下，优选为0.05重量％以上且1.0重量％以下的钼，0.1重量％以上且0.8以下的至少1种，优选为 0.2％以上且0.8％以下的铜，余量为铁和不可避免的杂质。