公开(公告)号：US20070181231A1

公开(公告)日：2007-08-09

申请号：US10590846

申请日：2005-03-09

申请人： Masaharu Ueda ,  Kazuo Pujita ,  Koichiro Matsushita ,  Takeshi Yamamoto ,  Takuya Satoh

发明人： Masaharu Ueda ,  Kazuo Pujita ,  Koichiro Matsushita ,  Takeshi Yamamoto ,  Takuya Satoh

IPC分类号： C21D9/04

CPC分类号： C21D9/04 ,  B21B1/085 ,  C21D2211/009 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/24

摘要： Disclosed are methods of producing steel rails having a high carbon content and being excellent in wear resistance and ductility from the slabs for rails. One method involves producing a steel rail having a high content of carbon, comprising finish rolling the rail in two consecutive passes, with a reduction rate per pass of a cross-section of the rail of 2-30%, wherein the conditions of the finish rolling satisfy the following relationship: S≦800/(C×T), wherein S is the maximum rolling interval time (seconds), C is the carbon content of the steel, wherein the carbon content is 0.85-1.40 mass %, and T is the maximum surface temperature (° C.) of the rail head. Another method involves producing a steel rail with a high content of carbon, comprising: finish rolling the rail in three or more passes, with a reduction rate per pass of a cross-section of the rail of 2-30%, wherein the conditions of the finish rolling satisfy the following relationship: S≦2400/(C×T×P), wherein S is the maximum rolling interval time (seconds), C is the carbon content of the steel rail, wherein the carbon content is 0.85˜1.40 mass %, T is the maximum surface temperature (° C.) of a rail head, and P is the number of passes, which is 3 or more. In addition to above, controlled additional amounts of V, Nb, N may be added to the steel rail and/or controlled rapid cooling of the rail after rolling may be accomplished to provide further improvements.

摘要翻译： 公开了一种生产具有高碳含量并且具有优异的耐磨性和延展性的钢轨的方法。 一种方法包括生产具有高碳含量的钢轨，其中包括以两次连续的道次精轧轧制轨道，轨道横截面的每次通过的减速率为2-30％，其中完成的条件 轧制满足以下关系：S <= 800 /（C×T），其中S是最大轧制间隔时间（秒），C是钢的碳含量，其中碳含量为0.85-1.40质量％，T为 轨头的最大表面温度（°C）。 另一种方法包括生产具有高碳含量的钢轨，其特征在于：以三次或更多道次精轧轧制轨道，轨道横截面的每次通过的减速率为2-30％，其中条件 精轧满足以下关系：S <= 2400 /（CxTxP）其中S是最大轧制间隔时间（秒），C是钢轨的碳含量，其中碳含量为0.85〜1.40质量％ T是轨头的最大表面温度（℃），P是3次以上的通过次数。 除了上述之外，可以在钢轨上加入控制的附加量的V，Nb，N，和/或可以在轧制之后控制轨道的快速冷却，以提供进一步的改进。

公开(公告)号：US20140087320A1

公开(公告)日：2014-03-27

申请号：US14119819

申请日：2012-05-23

申请人： Kenichi Karimine ,  Masaharu Ueda ,  Katsuya Iwano ,  Hideo Tottori ,  Takeshi Yamamoto

发明人： Kenichi Karimine ,  Masaharu Ueda ,  Katsuya Iwano ,  Hideo Tottori ,  Takeshi Yamamoto

IPC分类号： C21D9/04

CPC分类号： C21D9/04 ,  B23K31/02 ,  B23K2101/26 ,  B23K2103/04 ,  C21D1/30 ,  C21D9/50 ,  C21D2221/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18

摘要： A method of reheating a rail weld zone after rails were welded, a distance C between a reheating region P of a rail web portion 2 and a welding center Q is set to more than or equal to 0.2 times and less than or equal to three times a HAZ length Lh of the rail weld zone. A length B of the reheating region P may be more than or equal to 0.5 times and less than or equal to five times the HAZ length Lh of the rail weld zone. A height A of the reheating region P may be more than or equal to 0.2 times a height Hw of the rail web portion 2. A temperature Th reached in a reheating process at a center of the reheating region P may be higher than or equal to 400° C. and lower than or equal to 750° C.

摘要翻译： 在焊接轨道之后再次加热钢轨焊接区域的方法，将铁轨腹板部分2的再加热区域P与焊接中心Q之间的距离C设定为大于或等于0.2倍且小于或等于三倍 轨道焊接区的HAZ长度Lh。 再加热区域P的长度B可以大于或等于轨道焊接区域的HAZ长度Lh的0.5倍且小于或等于五倍。 再加热区域P的高度A可以大于或等于轨道腹板部分2的高度Hw的0.2倍。再加热区域P的中心处的再加热过程中达到的温度Th可以高于或等于 400℃，低于或等于750℃

公开(公告)号：US20110155821A1

公开(公告)日：2011-06-30

申请号：US13061001

申请日：2009-10-30

申请人： Masaharu Ueda ,  Kazunori Seki ,  Takuya Satou ,  Takeshi Yamamoto

发明人： Masaharu Ueda ,  Kazunori Seki ,  Takuya Satou ,  Takeshi Yamamoto

IPC分类号： E01B5/02

CPC分类号： C22C38/02 ,  C21C7/0025 ,  C21C7/064 ,  C22C38/002 ,  C22C38/04

摘要： This pearlite rail consists of a steel including: in terms of percent by mass, C: 0.65 to 1.20%; Si: 0.05 to 2.00%; Mn: 0.05 to 2.00%; P≦0.0150%; S≦0.0100%; Ca: 0.0005 to 0.0200%, and Fe and inevitable impurities as the balance, wherein a head surface portion which ranges from surfaces of head corner portions and a head top portion to a depth of 10 mm has a pearlite structure, a hardness Hv of the pearlite structure is in a range of 320 to 500, and Mn sulfide-based inclusions having major lengths in a range of 10 to 100 μm are present at an amount per unit area in a range of 10 to 200/mm2 in a cross-section taken along a lengthwise direction in the pearlite structure.

摘要翻译： 该珠光体钢轨由钢组成，以质量％计，C：0.65〜1.20％ Si：0.05〜2.00％ Mn：0.05〜2.00％ P＆nlE; 0.0150％; S＆nlE; 0.0100％; Ca：0.0005〜0.0200％，作为余量的Fe和不可避免的杂质，其中，从顶角部和头顶部的表面到深度为10mm的头表面部分具有珠光体组织，硬度Hv为 珠光体组织在320〜500的范围内，主要长度为10〜100μm的Mn硫化物系夹杂物的截面积为10〜200个/ mm 2，单位面积的量 沿着珠光体组织的长度方向。

公开(公告)号：US20090314049A1

公开(公告)日：2009-12-24

申请号：US12309439

申请日：2007-07-24

申请人： Masaharu Ueda ,  Kazunori Seki ,  Takuya Sato ,  Takeshi Yamamoto

发明人： Masaharu Ueda ,  Kazunori Seki ,  Takuya Sato ,  Takeshi Yamamoto

IPC分类号： B21D31/00

CPC分类号： C22C38/04 ,  B21B1/085 ,  C21D8/0205 ,  C21D9/04 ,  C21D2211/009 ,  C22C38/02

摘要： The invention provides a method for producing a pearlitic rail by subjecting to at least rough hot rolling and finish hot rolling a billet comprising, in mass %, C: 0.65-1.20%, Si: 0.05-2.00%, Mn: 0.05-2.00%, and a remainder of iron an unavoidable impurities, wherein the finish hot rolling is conducted by rolling at a rail head surface temperature in a range of not higher than 900° C. to not lower than Ar3 transformation point or Arcm transformation point to produce a head cumulative reduction of area of not less than 20% and a reaction force ratio of not less than 1.25, and the finish hot rolled rail head surface is subjected to accelerated cooling or spontaneous cooling to at least 550° C. at a cooling rate of 2 to 30° C./sec, thereby refining the rail head structure to attain a hardness within a predetermined range and improving rail wear resistance and ductility.

摘要翻译： 本发明提供一种生产珠光体钢轨的方法，该方法至少进行粗轧热精轧，其中以质量％计含有C：0.65-1.20％，Si：0.05-2.00％，Mn：0.05-2.00％ ，剩余的铁是不可避免的杂质，其中通过在不高于900℃至不低于Ar 3相变点或Arcm相变点的轨道头表面温度下轧制进行精热轧，以产生 头部累积减少面积不小于20％，反作用力比不小于1.25，最终热轧钢轨头表面经过加速冷却或自发冷却至少550℃，冷却速率为 2〜30℃/秒，从而精炼轨头结构以获得预定范围内的硬度，并提高钢轨的耐磨性和延展性。

公开(公告)号：US10144983B2

公开(公告)日：2018-12-04

申请号：US14119819

申请日：2012-05-23

申请人： Kenichi Karimine ,  Masaharu Ueda ,  Katsuya Iwano ,  Hideo Tottori ,  Takeshi Yamamoto

发明人： Kenichi Karimine ,  Masaharu Ueda ,  Katsuya Iwano ,  Hideo Tottori ,  Takeshi Yamamoto

IPC分类号： C21D9/04 ,  B23K31/02 ,  C21D1/30 ,  C21D9/50 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  B23K101/26 ,  B23K103/04

摘要： A method of reheating a rail weld zone after rails were welded, a distance C between a reheating region P of a rail web portion 2 and a welding center Q is set to more than or equal to 0.2 times and less than or equal to three times a HAZ length Lh of the rail weld zone. A length B of the reheating region P may be more than or equal to 0.5 times and less than or equal to five times the HAZ length Lh of the rail weld zone. A height A of the reheating region P may be more than or equal to 0.2 times a height Hw of the rail web portion 2. A temperature Th reached in a reheating process at a center of the reheating region P may be higher than or equal to 400° C. and lower than or equal to 750° C.

公开(公告)号：US08210019B2

公开(公告)日：2012-07-03

申请号：US12309439

申请日：2007-07-24

申请人： Masaharu Ueda ,  Kazunori Seki ,  Takuya Sato ,  Takeshi Yamamoto

发明人： Masaharu Ueda ,  Kazunori Seki ,  Takuya Sato ,  Takeshi Yamamoto

IPC分类号： B21B23/00 ,  B21D37/16

CPC分类号： C22C38/04 ,  B21B1/085 ,  C21D8/0205 ,  C21D9/04 ,  C21D2211/009 ,  C22C38/02

摘要： The invention provides a method for producing a pearlitic rail by rough hot rolling and finish hot rolling a billet. In the finish hot rolling, the billet is rolled at a rail head surface temperature in a range of not higher than 900° C. to not lower than the Ar3 transformation point or Arcm transformation point to produce a head cumulative reduction of area of not less than 20%, where the reaction force ratio of the finish rolling is not less than 1.25. The finish hot rolled rail head surface is subjected to accelerated cooling or spontaneous cooling to a temperature of 550° C. or less at a cooling rate of 2 to 30° C./seconds, thereby refining the rail head structure to attain a hardness within a predetermined range, and improving rail wear resistance and ductility.

摘要翻译： 本发明提供一种通过粗热轧和精轧热轧生产珠光体钢轨的方法。 在精轧中，钢坯以不高于900℃的轨头头表面温度轧制至不低于Ar3相变点或Arcm相变点，以产生不少于面积的头部累积减少量 超过20％，其中精轧的反作用力比不小于1.25。 将最终热轧钢轨头表面以2〜30℃/秒的冷却速度进行加速冷却或自发冷却至550℃以下的温度，由此精炼轨头结构以获得硬度 预定范围，提高轨道耐磨性和延展性。

公开(公告)号：US11241893B2

公开(公告)日：2022-02-08

申请号：US17195678

申请日：2021-03-09

申请人： Takeshi Yamamoto

发明人： Takeshi Yamamoto

IPC分类号： B41J11/00

摘要： A heating device includes a first member having a first sheet holding face, and a second member having a second sheet holding face and disposed facing the first sheet holding face of the first member. The first and second sheet holding faces are configured to hold a sheet between the first and second sheet holding faces. The sheet has a resin surface on at least one face of the sheet. The heating device is configured to heat the sheet while the first and second sheet holding faces hold the sheet on which liquid is applied. At least one of the first and second sheet holding faces is configured to contact the resin surface of the sheet. The at least one of the first and second sheet holding faces has an uneven surface with a plurality of convex or concave portions.

公开(公告)号：US20170300797A1

公开(公告)日：2017-10-19

申请号：US15513140

申请日：2014-09-22

申请人： Takeshi YAMAMOTO ,  Cosmonet Co., Ltd.

发明人： Takeshi Yamamoto

IPC分类号： G06K19/07 ,  G06K19/077 ,  H04B10/508 ,  H04B10/69

CPC分类号： G06K19/0728 ,  G01R27/28 ,  G06K19/07 ,  G06K19/0772 ,  H04B10/22 ,  H04B10/508 ,  H04B10/69

摘要： A data carrier 2 is provided with a comparator 41, a capacitor 42, a comparator operation adjustment resistor 43, a resistance voltage divider circuit 44 and a reactive-current resistor 45. The capacitor 42 is disposed between the cathode of a photo-diode (PD) 21 and the minus input terminal of the comparator 41. The comparator operation adjustment resistor 43 is disposed between the plus terminal of a primary battery 271 and the minus input terminal of the comparator 41. The resistance voltage divider circuit 44 is constituted by a series connection of voltage dividing resistors 441 and 442. One end of the resistance voltage divider circuit 44 is connected to the plus terminal of the primary battery 271. The junction between the voltage division resistor 441 and the other voltage division resistor 442 is connected to the plus input terminal of the comparator 41.

公开(公告)号：US09752217B2

公开(公告)日：2017-09-05

申请号：US14008205

申请日：2012-04-13

申请人： Tatsuo Yokoi ,  Hiroshi Shuto ,  Riki Okamoto ,  Nobuhiro Fujita ,  Kazuaki Nakano ,  Takeshi Yamamoto

发明人： Tatsuo Yokoi ,  Hiroshi Shuto ,  Riki Okamoto ,  Nobuhiro Fujita ,  Kazuaki Nakano ,  Takeshi Yamamoto

IPC分类号： C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/28 ,  C22C38/34 ,  C22C38/38

CPC分类号： C22C38/34 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/003 ,  C21D2211/004 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/28 ,  C22C38/38

摘要： In a hot-rolled steel sheet, an average pole density of an orientation group {100} to {223} , which is represented by an arithmetic mean of pole densities of orientations {100} , {116} , {114} , {112} , and {223} is 1.0 to 4.0 and a pole density of a crystal orientation {332} is 1.0 to 4.8, in a thickness center portion which is a thickness range of ⅝ to ⅜ from the surface of the steel sheet; an average grain size in the thickness center portion is less than or equal to 10 μm and a grain size of cementite precipitating in a grain boundary of the steel sheet is less than or equal to 2 μm; and an average grain size of precipitates containing TiC in grains is less than or equal to 3 nm and a number density per unit volume is greater than or equal to 1×1016 grains/cm3.

公开(公告)号：US09726182B2

公开(公告)日：2017-08-08

申请号：US14356470

申请日：2012-11-06

申请人： Hirofumi Kanazawa ,  Takeshi Yamamoto

发明人： Hirofumi Kanazawa ,  Takeshi Yamamoto

IPC分类号： F04D13/06 ,  H02K5/12 ,  H02K5/10 ,  F04D29/42 ,  F04D29/12

CPC分类号： F04D13/06 ,  F04D29/126 ,  F04D29/426 ,  F05B2260/603 ,  H02K5/10 ,  H02K5/12

摘要： A water pump has a pump section having radial impeller blades, a rotational shaft for rotating the radial impeller blades, and a motor section provided in the rear of the pump section and driving the rotational shaft. The motor section has a motor casing, a motor housed in the motor casing and rotating the rotational shaft, bearings provided on both sides of the motor interposed between them on the rotational shaft, interposed between an inner surface of the motor casing and the rotational shaft, and rotatably supporting the rotational shaft. In the motor casing, a vent hole for venting air between a motor space in which the motor is disposed in the motor casing and an outside of the motor casing is formed.