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1. 发明专利

JP2013169579A Seal box welding equipment of electric resistance welded steel pipe 审中-公开
标题翻译：电焊管密封焊接设备
公开(公告)号：JP2013169579A
公开(公告)日：2013-09-02
申请号：JP2012035927
申请日：2012-02-22
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社 , Nisshin Kokan Kk , 日新鋼管株式会社
发明人： OMOSAKO KOJI , AKIZUKI MAKOTO , TASHIRO TAKANORI , IGAWA SHIGENOBU , FUJIMOTO KAHO , KANAZAWA HIROKI
IPC分类号： B21C37/08 , B23K13/00 , B23K13/02 , B23K13/06
摘要： PROBLEM TO BE SOLVED: To completely prevent a penetrator crack by carrying out gas shielded welding where an oxygen concentration of a welding point or its periphery in a seal box is 300 ppm or less, and further to suppress degradation of a fatigue life.SOLUTION: Seal box welding equipment of an electric resistance welded tube includes: a seal box entrance gas supply pipe (30), a high-frequency heating coil (22), a preheating part gas supply pipe (70), a first oxygen concentration meter (51), a squeeze roll (23), a welding point gas supply pipe (31), a gas supply pipe (32) for adjusting seal box atmosphere in a seal box (5). An impeder (8) is included in the electric resistance welded tube (6), and inert atmosphere gas supply is controlled so that the oxygen concentration at the welding point or its periphery in the seal box (5) is 300 ppm or less.
摘要翻译：要解决的问题：为了通过进行气密保护焊接来完全防止穿透器裂纹，其中焊接点的氧浓度或其周边在密封箱中的氧浓度为300ppm以下，并且进一步抑制疲劳寿命的劣化。解决方案：电阻焊管的密封箱焊接设备包括：密封箱入口气体供给管（30），高频加热线圈（22），预热部分气体供给管（70），第一氧浓度计（51）），挤压辊（23），焊点气体供给管（31），用于调节密封箱（5）中的密封箱气氛的气体供给管（32）。电阻焊接管（6）中包括阻抗器（8），并且控制惰性气体气体供给，使得密封箱（5）的焊接点或其周边处的氧浓度为300ppm以下。

2. 发明专利

JP2011206813A Seal box welding equipment of electric resistance welded tube 有权
标题翻译：电焊管密封焊接设备
公开(公告)号：JP2011206813A
公开(公告)日：2011-10-20
申请号：JP2010077148
申请日：2010-03-30
申请人： Nisshin Kokan Kk , Nisshin Steel Co Ltd , 日新製鋼株式会社 , 日新鋼管株式会社
发明人： AKIZUKI MAKOTO , OMOSAKO KOJI , SUZAKI TSUNETOSHI , KANAZAWA HIROKI
IPC分类号： B23K13/00 , B23K13/06 , B23K37/08
摘要： PROBLEM TO BE SOLVED: To eliminate penetrator crack and to enable dealing with different tube dimensions, by performing gas shielded welding in a seal box.SOLUTION: The seal box welding equipment of an electric resistance welded tube includes, from the entrance to the exit of a seal box (5), a seal box entrance gas supply pipe (30), a high frequency heating coil (22), a squeeze roll (23), a welding point gas supply pipe (31), a gas supply pipe (32) for adjusting seal box atmosphere, and an oxygen densitometer (33). The seal box welding equipment is configured such that an impeder (8) is provided in an electric resistance welded tube (6), that oxygen concentration inside the seal box (5) is set to be ≤100 ppm, and that the gas flow rate for adjusting seal box atmosphere is set to be ≥100 L/min, with the gas flow rate from the welding point gas supply pipe (31) set to be ≥100 L/min.
摘要翻译：要解决的问题：通过在密封箱中进行气体保护焊，消除穿透裂纹并能够处理不同的管尺寸。解决方案：电阻焊管的密封箱焊接设备包括从入口到出口密封箱（5），密封箱入口气体供给管（30），高频加热线圈（22），挤压辊（23），焊接点气体供给管（31），气体供给管）和氧气密度计（33）。密封箱焊接设备被构造成使得在电阻焊管（6）中设置阻抗器（8），密封箱（5）内的氧浓度设定为≤100ppm，并且气体流量用于调节密封箱气氛设定为≥100L/ min，焊点气体供给管（31）的气体流量设定为≥100L/ min。

3. 发明专利

JP2014188569A Welding method for electroseamed steel pipe using seal box 有权
标题翻译：电焊条使用密封条的焊接方法
公开(公告)号：JP2014188569A
公开(公告)日：2014-10-06
申请号：JP2013068239
申请日：2013-03-28
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社 , Nisshin Kokan Kk , 日新鋼管株式会社
发明人： AKIZUKI MAKOTO , OMOSAKO KOJI , IGAWA SHIGENOBU , KANAZAWA HIROKI
IPC分类号： B23K13/06 , B23K13/00 , B23K13/08 , B23K37/08
摘要： PROBLEM TO BE SOLVED: To zero out penetrator crack and to cope with pipe dimension variation by performing gas shield welding in a seal box.SOLUTION: A welding method for an electroseamed steel pipe using a seal box includes, from an inlet side to an outlet side of a seal box (5), a seal box entrance gas supply pipe (30), a high frequency heating coil (22), a squeeze roll (23), a welding point gas supply pipe (31), a gas supply pipe (32) for adjusting seal box atmosphere, and an enzyme concentration meter (33). An impeder (8) is provided in an electroseamed steel pipe (6). The impeder (8)and an inner surface bead cutting device (7) are cooled with inactive gas of liquid at flow rate of 5 L/min or higher. The oxygen concentration in the seal box (5) is set to be 100 ppm or less, and a seal box atmosphere adjustment gas flow rate to be 100 L/min or higher. Gas flow rate from the welding point gas supply pipe (31) is set to be 50 L/min or higher.
摘要翻译：要解决的问题：通过在密封箱中进行气体屏蔽焊接，清除穿透裂纹并应对管道尺寸变化。解决方案：使用密封盒的电铸钢管的焊接方法包括从入口侧到出口密封箱（5）的侧面，密封箱入口气体供给管（30），高频加热线圈（22），挤压辊（23），焊接点气体供给管（31），气体供给管（32），用于调节密封箱气氛，以及酶浓度计（33）。阻电器（8）设置在电动钢管（6）中。阻流体（8）和内表面珠切割装置（7）以5L / min以上的流量以液体的惰性气体冷却。密封箱（5）中的氧浓度设定为100ppm以下，密封箱气氛调整气体流量为100L / min以上。来自焊点气体供给管（31）的气体流量设定为50L / min以上。

4. 发明专利

JP2013208637A Seal box welding method of electric resistance welded tube 审中-公开
标题翻译：电阻焊管密封焊接方法
公开(公告)号：JP2013208637A
公开(公告)日：2013-10-10
申请号：JP2012079757
申请日：2012-03-30
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社 , Nisshin Kokan Kk , 日新鋼管株式会社
发明人： OMOSAKO KOJI , AKIZUKI MAKOTO , TASHIRO TAKANORI , IGAWA SHIGENOBU , FUJIMOTO KAHO , KANAZAWA HIROKI
IPC分类号： B23K13/06
摘要： PROBLEM TO BE SOLVED: To eliminate the penetrator crack of a steel pipe, and further, to suppress the degradation of a fatigue life by controlling the mean surface temperature of a weld bead portion and the width of a white band inside a seal box.SOLUTION: A seal box welding method of an electric resistance welded tube is a method performing the welding of a weld zone by heat input in which an open pipe (1) is conveyed while supplying an inert gas to a preheating portion before a weld point (11) inside the seal box (5) and in the weld point (11), the bead temperature of the weld zone of the open pipe (1) is ≥1,300°C, and the width of a white band on the surface layer portion in the plate thickness of the weld zone is ≥100 μm.
摘要翻译：要解决的问题：为了消除钢管的穿透裂纹，并且通过控制焊道的平均表面温度和密封箱内的白色带的宽度来抑制疲劳寿命的劣化。：电阻焊接管的密封箱焊接方法是通过热输入进行焊接区域的焊接方法，其中在向熔融点（11）之前的预热部分供给惰性气体的同时输送开口管（1））和焊接点（11）中，开口管（1）的焊接区域的焊道温度≥1300℃，表面层部分的白色带宽度焊接区域的板厚度≥100μm。

5. 发明专利

JP2012180541A Carburizing steel plate having excellent workability and mechanical-structural member 有权
标题翻译：加工优良的可加工性和机械结构件的钢板
公开(公告)号：JP2012180541A
公开(公告)日：2012-09-20
申请号：JP2011042729
申请日：2011-02-28
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： AKIZUKI MAKOTO , OMOSAKO KOJI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/38 , C23C8/22
摘要： PROBLEM TO BE SOLVED: To provide a steel plate of a boron steel which has excellent workability, and also, can obtain high quench hardness at the surface layer part in carburizing and quenching at a low carbon potential.SOLUTION: The carburizing steel plate having excellent workability has a composition comprising, by mass, 0.10 to 0.50% C, ≤0.50% Si, 0.20 to 1.8% Mn, 0.20 to 2.0% Cr, ≤0.02% P, ≤0.02% S, 0.01 to 0.20% Ti, 0.002 to 0.10% Al and 0.0005 to 0.0050% B, and the balance Fe with inevitable impurities, and in which carbonized materials are dispersed into ferrite, the average distance between the carbonized materials is ≥0.8 μm, X value defined by formula (1) is ≤40, Y value defined by formula (2) is ≥30, and also, hardness is ≤150 HV: X=30C+30Si+20Mn+5Cr+150S+80Ti-1.5 average distance between the carbides (1), and Y=5C+22Mn+32Cr (2).
摘要翻译：要解决的问题：提供一种具有优异的加工性的硼钢钢板，并且在低碳电位的渗碳淬火中，在表层部分可获得高淬火硬度。解决方案：具有优异的加工性的渗碳钢板具有质量分数为0.10〜0.50％的C，≤0.50％的Si，0.20〜1.8％的Mn，0.20〜2.0％的Cr，≤0.02％的P，≤0.02 ％S，0.01〜0.20％Ti，0.002〜0.10％Al和0.0005〜0.0050％B，余量为Fe与不可避免的杂质，碳化材料分散在铁素体中，碳化材料之间的平均距离为≥0.8μm ，式（1）定义的X值≤40，式（2）定义的Y值≥30，硬度≤150HV：X = 30C + 30Si + 20Mn + 5Cr + 150S + 80Ti-1.5平均值碳化物（1）之间的距离，Y = 5C + 22Mn + 32Cr（2）。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2011208164A Rolled annealed steel sheet of boron steel and method for producing the same 有权
标题翻译：硼钢的轧制退火钢板及其制造方法
公开(公告)号：JP2011208164A
公开(公告)日：2011-10-20
申请号：JP2010073842
申请日：2010-03-26
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： KATAGIRI YUKIO , AKIZUKI MAKOTO , SUZAKI TSUNETOSHI
IPC分类号： C22C38/00 , C21D8/02 , C22C38/32
摘要： PROBLEM TO BE SOLVED: To provide a boron steel sheet having excellent workability and both of hardenability and weldability.SOLUTION: The boron steel sheet has chemical composition containing 0.15-0.35 mass% C, ≤0.50 mass% Si, 0.20-1.00 mass% Mn, ≤0.030 mass% P, ≤0.020 mass% S, 0.20-1.00 mass% Cr, 0.005-0.200 mass% Al, 0.01-0.20 mass% Ti, 0.0005-0.0050 mass% B, ≤0.0080 mass% N, and the balance of Fe and inevitable impurities, wherein ≥17.00 X value obtained by using expression (1), (X value)=5.5C(1+0.6Si)(1+4.1Mn)(1+2.3Cr), ≤0.500 carbon equivalent (Ceq) obtained by using expression (2), Ceq=C+Si/24+Mn/6+Cr/5, ≥38.0% total elongation (T. El) in the rolling direction and such ductility that local elongation (Elv) is ≥43.0% when a tensile test is done by using a notched tensile test piece.
摘要翻译：要解决的问题：提供具有优异的加工性和淬透性和可焊性两者的硼钢板。溶解性：硼钢板具有含有0.15-0.35质量％C，≤0.50质量％Si，0.20-1.00质量％Mn的化学组成，≤0.030质量％P，≤0.020质量％S，0.20〜1.00质量％Cr，0.005〜0.200质量％Al，0.01-0.20质量％Ti，0.0005〜0.0050质量％B，≤0.0080质量％N，余量的Fe和不可避免的杂质，其中通过使用表达式（1），（X值）= 5.5℃（1 + 0.6Si）（1 + 4.1Mn）（1 + 2.3Cr），≤0.0000碳当量 Ceq = C + Si / 24 + Mn / 6 + Cr / 5，总伸长率≥38.0％（T.E1）和局部伸长率（Elv）的延展性通过使用缺口拉伸试验片进行拉伸试验时，≥43.0％。

7. 发明专利

JP2011202192A Method for producing steel sheet for heat treatment and steel member 有权
标题翻译：用于生产用于热处理和钢构件的钢板的方法
公开(公告)号：JP2011202192A
公开(公告)日：2011-10-13
申请号：JP2010067712
申请日：2010-03-24
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： OMOSAKO KOJI , AKIZUKI MAKOTO , SUZAKI TSUNETOSHI
IPC分类号： C21D9/46 , C22C38/00 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a steel sheet for heat treatment which gives a steel member excellent in all of good workability and quenching property and also, fatigue characteristics, toughness and delayed fracture characteristics.SOLUTION: The method for producing the steel sheet for heat treatment includes: heating a slab composed of, by mass, >0.1% to 0.4% C, 0.5-1.5% Si, 0.3-2% Mn, ≤0.02% P, ≤0.02% S, 0.1-2% Cr, 0.01-0.1% Ti, 0.01-0.1% Nb, ≤0.1% Al, 0.0005-0.01% B and ≤0.01% N to a temperature of ≥1,250°C; then, hot-rolling the slab at the total rolling ratio at finish-rolling of ≥90% and at the finish temperature of Artransformation point to Artransformation point+100°C; cooling the hot-rolled sheet at an average cooling rate of ≤40°C/s; coiling the steel sheet in a coil shape at a coiling temperature of 450-600°C to be formed into a hot-rolled coil; and pickling, spheroidizing-annealing or cold-rolling annealing the hot-rolled coil.
摘要翻译：要解决的问题：提供一种用于制造热处理钢板的方法，其给出了所有良好的加工性和淬火性能以及疲劳特性，韧性和延迟断裂特性都优异的钢构件。解决方案：热处理用钢板包括：将质量分数为0.1质量％〜0.4质量％的Si，0.3〜2.5％的Si，0.3〜2％的Mn，≤0.02％的P，≤0.02％的S，0.1〜2质量％ Cr，0.01-0.1％Ti，0.01-0.1％Nb，≤0.1％Al，0.0005-0.01％B和≤0.01％N，温度≥1,250℃; 然后以最终轧制≥90％的总滚动比热轧板坯，在Artransformation的最终温度为Arttransformation point + 100℃; 以≤40℃/ s的平均冷却速度冷却热轧板; 在450-600℃的卷取温度下将钢板卷绕成线圈状，形成热轧卷材; 酸洗，球化退火或冷轧退火。

8. 发明专利

JP2013112890A Press working annealed steel sheet, manufacturing method therefor, and machine component excellent in wear resistance 审中-公开
标题翻译：压力工作钢板，其制造方法和耐磨性优异的机器组件
公开(公告)号：JP2013112890A
公开(公告)日：2013-06-10
申请号：JP2011263080
申请日：2011-11-30
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： OMOSAKO KOJI , TAGASHIRA SATOSHI , AKIZUKI MAKOTO
IPC分类号： C22C38/00 , C21D1/06 , C21D1/18 , C21D8/02 , C21D9/00 , C21D9/46 , C22C38/58 , C23C8/22
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet of superior press workability, which is capable of attaining superior abrasive wear resistance after refining heat treatment.SOLUTION: This steel sheet includes, by mass, C: 0.10-0.30%, Si: 0.03-1.00%, Mn: 0.10-2.50%, P: 0.001-0.030%, S: 0.001-0.030%, Cr: 0-2.00%, Ti: 0-0.25%, Nb: 0-0.25%, V: 0-1.00%, Ni: 0-2.00%, Mo: 0-1.0%, B: 0-0.0200%, T.Al: 0.005-0.070%, N: 0.001-0.008% and the balance of Fe and inevitable impurities, and has a chemical composition satisfying Mn+Cr: 1.00-3.00% and Ti+Nb: 0.07% or more. This press working annealed steel sheet has a cross sectional hardness of 200 HV or less, and has a small anisotropy of local elongation.
摘要翻译：要解决的问题：提供一种优异的冲压加工性的钢板，其能够在精炼热处理后获得优异的耐磨性。＆lt; P＆gt;解决方案：该钢板以质量计包含C：0.10〜0.30％，Si：0.03〜1.00％，Mn：0.10〜2.50％，P：0.001-0.030％，S：0.001-0.030％，Cr： 0-2.00％，Ti：0-0.25％，Nb：0-0.25％，V：0-1.00％，Ni：0-2.00％，Mo：0-1.0％，B：0-0.0200％：0.005-0.070％，N：0.001-0.008％，余量为Fe和不可避免的杂质，化学组成满足Mn + Cr：1.00-3.00％，Ti + Nb：0.07％以上。该压制加工退火钢板的截面硬度为200HV以下，局部伸长率的各向异性小。版权所有（C）2013，JPO＆INPIT

9. 发明专利

JP2009235499A Method for manufacturing hollow stabilizer 审中-公开
标题翻译：制造中空稳定器的方法
公开(公告)号：JP2009235499A
公开(公告)日：2009-10-15
申请号：JP2008083743
申请日：2008-03-27
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： AKIZUKI MAKOTO , SUZUKI MASAHITO , IMANAKA TOMOHIRO , SUZAKI TSUNETOSHI
IPC分类号： C21D9/08 , B21C37/08 , C21D9/50 , C22C38/00 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a hollow stabilizer superior in fatigue properties, with high productivity and processability while suppressing the manufacturing cost.
SOLUTION: The method for manufacturing the hollow stabilizer comprises sequentially: a step of preparing a slab having a composition comprising, by mass%, 0.15 to 0.40% C, 0.30% or less Si, 0.3 to 2.0% Mn, 0.030% or less P, 0.010% or less S, 0.2 to 0.8% Cr, 0.005 to 0.1% Ti, 0.005 to 0.10% sol. Al, 0.010% or less N, 0.0010 to 0.0070% B, and the balance Fe with unavoidable impurities; a hot rolling step of finish-rolling the slab at a finishing temperature of 800 to 900°C, and then winding the plate at a winding temperature of 550 to 680°C to obtain a hot-rolled steel plate; a step of electric-resistance-welding the wound hot-rolled steel plate and tempering only a weld bead part at a transformation point Ac
1 or lower to obtain an electric-resistance-welded steel pipe; and steps of forming the electric-resistance-welded steel pipe into the hollow stabilizer, then hardening the inside of the hollow stabilizer with an average cooling rate of 50°C/second or higher, and subsequently tempering the hollow stabilizer at 400°C or lower.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种制造疲劳特性优异的中空稳定剂的方法，同时抑制制造成本，生产率和加工性高。解决方案：制备中空稳定剂的方法包括以下步骤：制备具有以质量计含有0.15-0.40％C，0.30％或更少的Si，0.3-2.0％Mn，0.030％或更小的P，0.010％以下的S，0.2〜0.8％的Cr，0.005〜0.1％的Ti，0.005〜0.10％的溶胶。 Al，0.010％以下N，0.0010〜0.0070％B，余量为Fe，不可避免的杂质; 在800〜900℃的终轧温度下对板坯进行精轧的热轧工序，然后在550〜680℃的卷取温度下卷绕该板，得到热轧钢板; 将热轧钢板进行电阻焊接的步骤，并且在相变点Ac 1 以下仅回火焊缝部分的步骤以获得电阻焊钢管; 以及将电阻焊接的钢管形成在中空稳定器中，然后以50℃/秒以上的平均冷却速度使中空稳定器的内部硬化，然后在400℃下回火中空稳定剂的步骤，或降低。版权所有（C）2010，JPO＆INPIT

10. 发明专利

JP2009191330A Electric resistance steel tube 审中-公开
标题翻译：电阻钢管
公开(公告)号：JP2009191330A
公开(公告)日：2009-08-27
申请号：JP2008034807
申请日：2008-02-15
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： AKIZUKI MAKOTO , OMOSAKO KOJI , SUZAKI TSUNETOSHI
IPC分类号： C22C38/00 , C21D8/02 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide an electric resistance steel tube which can be produced at high productivity while suppressing production cost, and further includes excellent workability and fatigue properties after quenching and tempering.
SOLUTION: The electric resistance steel tube includes a chemical composition comprising, by mass, 0.15 to 0.30% C, ≤0.30% Si, 1.0 to 2.0% Mn, ≤0.030% P, ≤0.010% S, 0.2 to 1.5% Cr, 0.005 to 0.03% Ti, 0.005 to 0.10% sol.Al, ≤0.010% N and 0.0010 to 0.0070% B, and the balance Fe with inevitable impurities, and in which the values of X and Y shown by formula X=3C+1.5Mn+2Cr+120S+90Ti and formula Y=20C+250Mn+35Cr+350B respectively satisfy X 300. The steel tube includes a mixed structure of ferrite and pearlite or a mixed structure of ferrite and cementite.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决的问题：提供一种能够在抑制生产成本的同时以高生产率生产的电阻钢管，并且还进一步包括淬火回火后的优异的加工性和疲劳特性。电解钢管包括以质量计含有C：0.15〜0.30％Si，1.0〜2.0％Mn，≤0.030％P，≤0.010％S，0.2〜1.5％ Cr，0.005〜0.03％的Ti，0.005〜0.10％的溶胶，Al，≤0.010％的N和0.0010〜0.0070％的B，余量为Fe与不可避免的杂质，其中X和Y的值由式X = 3C + 1.5Mn + 2Cr + 120S + 90Ti，式Y = 20C + 250Mn + 35Cr + 350B分别满足X <8且Y> 300。钢管包括铁素体和珠光体的混合结构或铁素体和渗碳体的混合结构。版权所有（C）2009，JPO＆INPIT

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