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1. 发明授权

US07371293B2 Cold finished seamless steel tubes 有权
标题翻译：冷成品无缝钢管
公开(公告)号：US07371293B2
公开(公告)日：2008-05-13
申请号：US11039954
申请日：2005-01-24
申请人： Takashi Nakashima , Kouichi Kuroda , Kenichi Beppu
发明人： Takashi Nakashima , Kouichi Kuroda , Kenichi Beppu
IPC分类号： C22C38/18 , C22C38/00 , C21D8/10
CPC分类号： C21D9/08 , B21D3/04 , Y10T428/12458
摘要： Cold finished seamless steel tubes are made such that the residual stress F to be generated at the stage of the correction process after cold working is controlled to be 30 MPa or more and the scattering thereof is 30 MPa or less, when measured by Crampton method. Further, by adjusting the average grain size of spheroidized carbides, the dimensional change which emerges in lathe turning of the outside and inside diameter of relevant steel tubes due to the residual strain can be suppressed, and the strict roundness as well as the excellent machinability can be secured at the final processing stage of the work pieces for bearing parts. Consequently, steel tubes with high dimensional accuracy and less dimensional change at the final steps such as lathe turning, heat treatment and the like, can be made for use as bearing parts.
摘要翻译：制成冷成品无缝钢管，使得在通过Crampton法测量时，在冷加工后的校正处理阶段中产生的残余应力F被控制为30MPa以上，散射为30MPa以下。此外，通过调整球状碳化物的平均粒径，可以抑制由于残留应变而导致的相关钢管的外径和内径的车削转弯引起的尺寸变化，严格的圆度以及优异的机械加工性在轴承零件的工件的最终加工阶段被固定。因此，可以在诸如车床车削，热处理等的最终步骤中具有高尺寸精度和较小尺寸变化的钢管用作轴承部件。

2. 发明申请

US20050191509A1 Cold finished seamless steel tubes 有权
标题翻译：冷成品无缝钢管
公开(公告)号：US20050191509A1
公开(公告)日：2005-09-01
申请号：US11039954
申请日：2005-01-24
申请人： Takashi Nakashima , Kouichi Kuroda , Kenichi Beppu
发明人： Takashi Nakashima , Kouichi Kuroda , Kenichi Beppu
IPC分类号： B21C1/22 , B21D3/04 , B32B5/14 , F16C33/64 , F16L9/02
CPC分类号： C21D9/08 , B21D3/04 , Y10T428/12458
摘要： Cold finished seamless steel tubes are made such that the residual stress F to be generated at the stage of the correction process after cold working is controlled to be 30 MPa or more and the scattering thereof is 30 MPa or less, when measured by Crampton method. Further, by adjusting the average grain size of spheroidized carbides, the dimensional change which emerges in lathe turning of the outside and inside diameter of relevant steel tubes due to the residual strain can be suppressed, and the strict roundness as well as the excellent machinability can be secured at the final processing stage of the work pieces for bearing parts. Consequently, steel tubes with high dimensional accuracy and less dimensional change at the final steps such as lathe turning, heat treatment and the like, can be made for use as bearing parts.
摘要翻译：制成冷成品无缝钢管，使得在通过Crampton法测量时，在冷加工后的校正处理阶段中产生的残余应力F被控制为30MPa以上，散射为30MPa以下。此外，通过调整球状碳化物的平均粒径，可以抑制由于残留应变而导致的相关钢管的外径和内径的车削转弯引起的尺寸变化，严格的圆度以及优异的机械加工性在轴承零件的工件的最终加工阶段被固定。因此，可以在诸如车床车削，热处理等的最终步骤中具有高尺寸精度和较小尺寸变化的钢管用作轴承部件。

3. 发明授权

US08091399B2 Process for manufacturing a seamless tube 有权
标题翻译：无缝管制造工艺
公开(公告)号：US08091399B2
公开(公告)日：2012-01-10
申请号：US11790875
申请日：2007-04-27
申请人： Kenichi Beppu
发明人： Kenichi Beppu
IPC分类号： B21B17/10
CPC分类号： B21C37/30 , B21B17/14 , B21B19/04 , B21B23/00 , B21B45/004 , B21C37/06 , C21D8/10
摘要： A process for manufacturing a seamless tube which can effectively suppress thickness deviations which are apt to occur in thin-walled seamless tubes is provided. A billet which has been soaked in a heating furnace at a given temperature for a given length of time is subjected to piercing and elongation rolling to form a mother tube, which is then soaked in a reheating furnace at a given temperature for a given length of time and then subjected to sizing to produce a seamless tube with a wall thickness of at most 4 mm. The wall thickness of the tube after sizing is at most 4 mm, the soaking time at the given temperature in the heating furnace is in the range of [billet diameter (mm)×(from 0.14-0.35 )] minutes, and the soaking time at the given temperature in the reheating furnace is in the range of [mother tube wall thickness (mm)×(from 3.0-10.0)] minutes.
摘要翻译：提供一种可以有效地抑制在薄壁无缝管中易发生的厚度偏差的无缝管的制造方法。将已经在给定温度下在加热炉中浸泡一定长度时间的坯料进行穿孔和伸长轧制以形成母管，然后将母管在给定温度下在再加热炉中浸泡一定长度的时间，然后进行上浆以产生壁厚最大为4mm的无缝管。上浆后管的壁厚为4mm以下，加热炉中在给定温度下的均热时间在[坯料直径（mm）×（0.14-0.35）]分钟的范围内，均热时间在再加热炉中的给定温度处于[母管壁厚（mm）×（3.0-10.0）]分钟的范围内。

4. 发明申请

US20100193171A1 PRODUCTION METHOD OF INTERNALLY RIBBED STEEL TUBE AND THE INTERNALLY RIBBED STEEL TUBE 有权
标题翻译：内部钢管和内部钢管的生产方法
公开(公告)号：US20100193171A1
公开(公告)日：2010-08-05
申请号：US12761009
申请日：2010-04-15
申请人： Kenichi Beppu
发明人： Kenichi Beppu
IPC分类号： F28F1/40 , B21C37/20
CPC分类号： F28F1/40 , B21C1/24 , B21C37/207 , B21D3/04 , C21D7/12 , C21D8/08 , C21D2221/00 , Y10T29/49384 , Y10T29/49385 , Y10T29/49391
摘要： There is provided a production method of an internally ribbed steel tube, capable of forming spiral ribs stably so as to reduce troubles at the time of cold drawing for forming the spiral ribs of the steel tube. In this production method, the spiral ribs can be formed stably so as to reduce troubles at the time of cold drawing for forming the spiral ribs by straightening bends of a blank tube before the cold drawing for forming the spiral ribs, by optimizing the direction of the spiral rib formation after the bend straightening, and by correcting the drawing schedule depending on the blank tube. The obtained internally ribbed steel tube is well applicable to an increased capacity and a higher temperature/higher pressure operation of a boiler because the steel tube is provided with high formability and excellent quality as a boiler steel tube.
摘要翻译：提供了能够稳定地形成螺旋肋的内部有棱纹的钢管的制造方法，以减少冷拉拔时对钢管的螺旋肋的形成的麻烦。在该制造方法中，可以稳定地形成螺旋肋，以便通过在用于形成螺旋肋的冷拉伸之前矫正用于形成螺旋肋的冷拔之前的坯管的弯曲来减少用于形成螺旋肋的冷拉伸时的麻烦，在弯曲矫正之后形成螺旋形肋，并且根据空白管校正绘制进度。所获得的内部带肋钢管适用于锅炉的增加容量和更高的温度/更高的压力操作，因为钢管具有高的成形性和作为锅炉钢管的优良品质。

5. 发明申请

US20080011037A1 Process for manufacturing a seamless tube 有权
标题翻译：无缝管制造工艺
公开(公告)号：US20080011037A1
公开(公告)日：2008-01-17
申请号：US11790875
申请日：2007-04-27
申请人： Kenichi Beppu
发明人： Kenichi Beppu
IPC分类号： B21B17/10
CPC分类号： B21C37/30 , B21B17/14 , B21B19/04 , B21B23/00 , B21B45/004 , B21C37/06 , C21D8/10
摘要： A process for manufacturing a seamless tube which can effectively suppress thickness deviations which are apt to occur in thin-walled seamless tubes is provided. A billet which has been soaked in a beating furnace at a given temperature for a given length of time is subjected to piercing and elongation rolling to form a mother tube, which is then soaked in a reheating furnace at a given temperature for a given length of time and then subjected to sizing to produce a seamless tube with a wall thickness of at most 4 mm. The wall thickness of the tube after sizing is at most 4 mm, the soaking time at the given temperature in the heating furnace is in the range of [billet diameter (mm)×(from 0.14-0.35)] minutes, and the soaking time at the given temperature in the reheating furnace is in the range of [mother tube wall thickness (mm)×(from 3.0-10.0)] minutes.
摘要翻译：提供一种可以有效地抑制在薄壁无缝管中易发生的厚度偏差的无缝管的制造方法。将在已经在给定温度下在打浆炉中浸泡一定长度时间的坯料进行穿孔和伸长轧制以形成母管，然后将母管在给定温度下在再加热炉中浸泡一定长度的时间，然后进行上浆以产生壁厚最大为4mm的无缝管。上浆后管的壁厚最大为4mm，加热炉中在给定温度下的均热时间在[坯料直径（mm）×（0.14-0.35）]分钟的范围内，均热时间在再加热炉中的给定温度下，在[母管壁厚（mm）×（3.0-10.0）]分钟的范围内。

6. 发明授权

US08281635B2 Production method of internally ribbed steel tube and drawing plug for use therein 有权
标题翻译：内部有肋钢管和拉丝塞的生产方法
公开(公告)号：US08281635B2
公开(公告)日：2012-10-09
申请号：US12823462
申请日：2010-06-25
申请人： Kenichi Beppu
发明人： Kenichi Beppu
IPC分类号： B21C1/24
CPC分类号： B21C1/24 , B21C3/16 , B21C37/207 , C10M129/40 , C10M2201/085 , C10M2207/125 , C10M2207/1253 , C10N2230/06 , C10N2240/403 , C10N2250/14 , C21D8/10 , C21D9/08 , F28F1/40 , F28F19/06 , F28F2245/00
摘要： There is provided a production method capable of forming spiral ribs stably by reducing troubles at the time of cold drawing for forming the spiral ribs on an internally ribbed steel tube. When the internally ribbed steel tube on which a plurality of stripes of spiral ribs are formed in the tube axis direction is manufactured by inserting a plug on which a plurality of stripes of spiral grooves are formed on the outer peripheral surface thereof into the tube to be worked subjected to chemical treatment and then performing cold drawing, drawing is performed with the plug preheated to 50 to 200° C., thus forming the spiral ribs on the internal surface of a blank tube. The chemical treatment preferably includes a pickling step of removing oxided scale and rust on the tube surface, a step of forming a zinc phosphate coat on the neutralized tube surface, and a step of forming a lubricating layer on the zinc phosphate coat. The internally ribbed steel tube thus obtained is well applicable to increased capacity and higher temperature/higher pressure of a boiler because the steel tube is provided with formability and quality excellent as a boiler steel tube.
摘要翻译：提供了一种能够通过减少在内部带肋钢管上形成螺旋肋的冷拉伸时的麻烦来稳定地形成螺旋肋的制造方法。当在其轴线方向上形成有多条螺旋状肋条的内部带肋钢管时，通过在其外周面上插入形成有多条螺旋槽的条状的塞子，进行化学处理，然后进行冷拉拔，将预热至50〜200℃的塞进行拉伸，由此在空管的内表面上形成螺旋状的肋。化学处理优选包括在管表面除去氧化垢和锈蚀的酸洗步骤，在中和的管表面上形成磷酸锌涂层的步骤，以及在磷酸锌涂层上形成润滑层的步骤。由此获得的内部有棱纹的钢管，由于钢管具有作为锅炉钢管的成形性和质量优异性，因此适用于锅炉的增加容量和较高的温度/更高的压力。

7. 发明授权

US07846274B2 High strength steel pipe for an air bag 有权
标题翻译：用于气囊的高强度钢管
公开(公告)号：US07846274B2
公开(公告)日：2010-12-07
申请号：US10948581
申请日：2004-09-24
申请人： Kunio Kondo , Miyuki Yamamoto , Takashi Takano , Kenichi Beppu , Susumu Hirano , Keisuke Hitoshio , Hidetoshi Kurata
发明人： Kunio Kondo , Miyuki Yamamoto , Takashi Takano , Kenichi Beppu , Susumu Hirano , Keisuke Hitoshio , Hidetoshi Kurata
IPC分类号： C22C38/18
CPC分类号： C22C38/40 , B60R21/268 , C21D1/18 , C21D8/10 , C21D9/08 , C22C38/20 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/42 , C22C38/48 , C22C38/50 , C22C38/58
摘要： In order to manufacture a steel pipe for an air bag which can cope with increase in the pressure of gas blown into an air bag and decreases in the wall thickness of an accumulator, a steel having a composition, mass %, of: C: 0.05-0.20%, Si: 0.1-1.0%, Mn: 0.20-2.0%, P: at most 0.025%, S: at most 0.010%, Cr: 0.05-1.0%, Al: at most 0.10%, if necessary at least one of Mo: at most 0.50%, Ni: at most 1.5%, Cu: at most 0.5%, V: at most 0.2%, Ti: at most 0.1%, Nb: at most 0.1%, and B: at most 0.005%, and also if necessary, at least one of Ca: at most 0.01%, Mg: at most 0.01%, and REM (rare earth elements): at most 0.01%, and a remainder of Fe and impurities is used to produce a steel pipe, and the pipe is then subjected to cold working to predetermined dimensions, then to heating to a temperature of at least the Ac1 transformation temperature followed by quenching, and then to tempering at a temperature no higher than the Ac1 transformation temperature.
摘要翻译：为了制造气囊用钢管，能够应对气泡吹入的气体的压力增加，蓄压器的壁厚减小，组成质量％为C：0.05的钢 -0.20％，Si：0.1〜1.0％，Mn：0.20〜2.0％，P：0.025％以下，S：0.0％以下，Cr：0.05〜1.0％，Al：0.10％ Mo：0.50以下，Ni：1.5％以下，Cu：0.5％以下，V：0.2％以下，Ti：0.1％以下，Nb：0.1％以下，B：0.005以下％，根据需要，还可以使用Ca：0.01％以下，Mg：0.01％以下，REM（稀土元素）：0.01％以下，Fe和杂质余量中的至少一种，然后将管冷却至预定尺寸，然后加热至至少Ac1相变温度，然后淬火，然后在不高于Ac1转变温度的温度下回火。

8. 发明申请

US20050039826A1 High strength steel pipe for an air bag and a process for its manufacture 有权
标题翻译：用于气囊的高强度钢管及其制造方法
公开(公告)号：US20050039826A1
公开(公告)日：2005-02-24
申请号：US10948581
申请日：2004-09-24
申请人： Kunio Kondo , Miyuki Yamamoto , Takashi Takano , Kenichi Beppu , Susumu Hirano , Keisuke Hitoshio , Hidetoshi Kurata
发明人： Kunio Kondo , Miyuki Yamamoto , Takashi Takano , Kenichi Beppu , Susumu Hirano , Keisuke Hitoshio , Hidetoshi Kurata
IPC分类号： B60R21/268 , C21D1/18 , C21D8/10 , C21D9/08 , C22C38/20 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/40 , C22C38/42 , C22C38/48 , C22C38/50 , C22C38/58 , C22C38/44
CPC分类号： C22C38/40 , B60R21/268 , C21D1/18 , C21D8/10 , C21D9/08 , C22C38/20 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/42 , C22C38/48 , C22C38/50 , C22C38/58
摘要： In order to manufacture a steel pipe for an air bag which can cope with increase in the pressure of gas blown into an air bag and decreases in the wall thickness of an accumulator, a steel having a composition, mass %, of: C: 0.05-0.20%, Si: 0.1-1.0%, Mn: 0.20-2.0%, P: at most 0.025%, S: at most 0.010%, Cr: 0.05-1.0%, Al: at most 0.10%, if necessary at least one of Mo: at most 0.50%, Ni: at most 1.5%, Cu: at most 0.5%, V: at most 0.2%, Ti: at most 0.1%, Nb: at most 0.1%, and B: at most 0.005%, and also if necessary, at least one of Ca: at most 0.01%, Mg: at most 0.01%, and REM (rare earth elements): at most 0.01%, and a remainder of Fe and impurities is used to produce a steel pipe, and the pipe is then subjected to cold working to predetermined dimensions, then to heating to a temperature of at least the Ac1 transformation temperature followed by quenching, and then to tempering at a temperature no higher than the Ac1 transformation temperature.
摘要翻译：为了制造气囊用钢管，能够应对气泡吹入的气体的压力增加，蓄压器的壁厚减小，组成质量％为C：0.05的钢 -0.20％，Si：0.1〜1.0％，Mn：0.20〜2.0％，P：0.025％以下，S：0.0％以下，Cr：0.05〜1.0％，Al：0.10％ Mo：0.50以下，Ni：1.5％以下，Cu：0.5％以下，V：0.2％以下，Ti：0.1％以下，Nb：0.1％以下，B：0.005以下％，根据需要，还可以使用Ca：0.01％以下，Mg：0.01％以下，REM（稀土元素）：0.01％以下，Fe和杂质余量中的至少一种，然后将管冷却至预定尺寸，然后加热至至少Ac1相变温度，然后淬火，然后在不高于Ac1转变温度的温度下回火。

9. 发明授权

US08387251B2 Production method of internally ribbed steel tube 有权
标题翻译：内部有肋钢管的生产方法
公开(公告)号：US08387251B2
公开(公告)日：2013-03-05
申请号：US12761009
申请日：2010-04-15
申请人： Kenichi Beppu
发明人： Kenichi Beppu
IPC分类号： B21D53/06 , B23P15/26 , B21C1/24
CPC分类号： F28F1/40 , B21C1/24 , B21C37/207 , B21D3/04 , C21D7/12 , C21D8/08 , C21D2221/00 , Y10T29/49384 , Y10T29/49385 , Y10T29/49391
摘要： There is provided a production method of an internally ribbed steel tube, capable of forming spiral ribs stably so as to reduce troubles at the time of cold drawing for forming the spiral ribs of the steel tube. In this production method, the spiral ribs can be formed stably so as to reduce troubles at the time of cold drawing for forming the spiral ribs by straightening bends of a blank tube before the cold drawing for forming the spiral ribs, by optimizing the direction of the spiral rib formation after the bend straightening, and by correcting the drawing schedule depending on the blank tube. The obtained internally ribbed steel tube is well applicable to an increased capacity and a higher temperature/higher pressure operation of a boiler because the steel tube is provided with high formability and excellent quality as a boiler steel tube.
摘要翻译：提供了能够稳定地形成螺旋肋的内部有棱纹的钢管的制造方法，以减少冷拉拔时对钢管的螺旋肋的形成的麻烦。在该制造方法中，可以稳定地形成螺旋肋，以便通过在用于形成螺旋肋的冷拉伸之前矫正用于形成螺旋肋的冷拔之前的坯管的弯曲来减少用于形成螺旋肋的冷拉伸时的麻烦，在弯曲矫正之后形成螺旋形肋，并且根据空白管校正绘制进度。所获得的内部带肋钢管适用于锅炉的增加容量和更高的温度/更高的压力操作，因为钢管具有高的成形性和作为锅炉钢管的优良品质。

10. 发明申请

US20100319425A1 PRODUCTION METHOD OF INTERNALLY RIBBED STEEL TUBE AND DRAWING PLUG FOR USE THEREIN 有权
标题翻译：内胆钢管的制造方法及其使用的插图
公开(公告)号：US20100319425A1
公开(公告)日：2010-12-23
申请号：US12823462
申请日：2010-06-25
申请人： Kenichi Beppu
发明人： Kenichi Beppu
IPC分类号： B21C3/16 , B21C37/20 , B21B45/04
CPC分类号： B21C1/24 , B21C3/16 , B21C37/207 , C10M129/40 , C10M2201/085 , C10M2207/125 , C10M2207/1253 , C10N2230/06 , C10N2240/403 , C10N2250/14 , C21D8/10 , C21D9/08 , F28F1/40 , F28F19/06 , F28F2245/00
摘要： There is provided a production method capable of forming spiral ribs stably by reducing troubles at the time of cold drawing for forming the spiral ribs on an internally ribbed steel tube. When the internally ribbed steel tube on which a plurality of stripes of spiral ribs are formed in the tube axis direction is manufactured by inserting a plug on which a plurality of stripes of spiral grooves are formed on the outer peripheral surface thereof into the tube to be worked subjected to chemical treatment and then performing cold drawing, drawing is performed with the plug preheated to 50 to 200° C., thus forming the spiral ribs on the internal surface of a blank tube. The chemical treatment preferably includes a pickling step of removing oxided scale and rust on the tube surface, a step of forming a zinc phosphate coat on the neutralized tube surface, and a step of forming a lubricating layer on the zinc phosphate coat. The internally ribbed steel tube thus obtained is well applicable to increased capacity and higher temperature/higher pressure of a boiler because the steel tube is provided with formability and quality excellent as a boiler steel tube.
摘要翻译：提供了一种能够通过减少在内部带肋钢管上形成螺旋肋的冷拉伸时的麻烦来稳定地形成螺旋肋的制造方法。当在其轴线方向上形成有多条螺旋状肋条的内部带肋钢管时，通过在其外周面上插入形成有多条螺旋槽的条状的塞子，进行化学处理，然后进行冷拉拔，将预热至50〜200℃的塞进行拉伸，由此在空管的内表面上形成螺旋状的肋。化学处理优选包括在管表面除去氧化垢和锈蚀的酸洗步骤，在中和的管表面上形成磷酸锌涂层的步骤，以及在磷酸锌涂层上形成润滑层的步骤。由此获得的内部有棱纹的钢管，由于钢管具有作为锅炉钢管的成形性和质量优异性，因此适用于锅炉的增加容量和较高的温度/更高的压力。

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