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1. 发明授权

US08613817B2 Method for producing duplex stainless steel seamless pipe 有权
标题翻译：双相不锈钢无缝管生产方法
公开(公告)号：US08613817B2
公开(公告)日：2013-12-24
申请号：US12225545
申请日：2007-03-23
申请人： Naoya Hirase , Tetsuya Nakanishi , Kazuhiro Shimoda , Hirokazu Okada , Tomio Yamakawa , Yasuyoshi Hidaka
发明人： Naoya Hirase , Tetsuya Nakanishi , Kazuhiro Shimoda , Hirokazu Okada , Tomio Yamakawa , Yasuyoshi Hidaka
IPC分类号： C21D9/08 , C21D9/00
CPC分类号： B21B23/00 , B21B19/04 , C21D1/70 , C21D1/74 , C21D9/08 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/44
摘要： The present invention is to provide a method for producing duplex stainless steel seamless pipe in which a duplex stainless steel billet can be inhibited from generating an oxide scale on the surface thereof during heating and the generation of outer surface flaw can also be prevented. The billet is heated in the a heating furnace for 1.5 hours or more and 4.0 hours or less at a heating temperature of 1250° C. or more and 1320° C. or less while regulating the average concentration of sulfur dioxide (SO2) gas in the atmosphere within the furnace to 0.01 volume % or less.
摘要翻译：本发明提供一种双相不锈钢无缝管的制造方法，其中可以抑制双相不锈钢坯料在加热时在其表面上产生氧化皮，并且还可以防止外表面缺陷的产生。在1250℃以上1320℃以下的加热温度下，在加热炉中将钢坯加热1.5小时以上4.0小时以上，同时调节二氧化硫（SO2）气体的平均浓度炉内气氛为0.01体积％以下。

2. 发明授权

US08065901B2 Mandrel bar for high-alloy rolling, method for surface treating a mandrel bar, method for producing mandrel bar, and method for operating seamless pipe mill 有权
标题翻译：高合金轧制用芯棒，芯棒的表面处理方法，芯棒的制造方法以及无缝管轧机的运转方法
公开(公告)号：US08065901B2
公开(公告)日：2011-11-29
申请号：US12236970
申请日：2008-09-24
申请人： Sumio Iida , Yasuyoshi Hidaka , Mitsuru Yoshizawa , Koji Nakaike
发明人： Sumio Iida , Yasuyoshi Hidaka , Mitsuru Yoshizawa , Koji Nakaike
IPC分类号： B21B17/10
CPC分类号： B21B25/00 , B21B3/02 , B21B17/02 , B21B17/04 , B21B23/00 , B21B25/04 , C21D8/10 , C21D8/105 , C21D9/08 , Y10S72/70
摘要： A method for surface treating a mandrel bar used for hot rolling of high-alloy seamless steel pipe is provided. The method includes heat treating the mandrel bar to develop a scale, and after heat treatment, rolling ordinary steel comprising 8% or less of chromium for at least 50 passes. This achieves a mandrel bar for rolling high-alloy steel possessing both durability and superior resistance to seizure.
摘要翻译：提供了一种用于表面处理用于高合金无缝钢管的热轧的芯棒的方法。该方法包括热处理芯棒以形成刻度，并且在热处理之后，将包含8％或更少的铬的普通钢轧制至少50次。这实现了具有耐久性和优异的抗咬合性的用于轧制高合金钢的芯棒。

3. 发明授权

US08065900B2 Method of manufacturing plug used to pierce and roll metal material, method of manufacturing metal pipe and plug used to pierce and roll metal material 有权
标题翻译：制造用于刺穿和轧制金属材料的插头的方法，用于刺穿和轧制金属材料的金属管和塞子的制造方法
公开(公告)号：US08065900B2
公开(公告)日：2011-11-29
申请号：US12533390
申请日：2009-07-31
申请人： Yasuyoshi Hidaka , Naoya Hirase , Yasuhiro Kouchi
发明人： Yasuyoshi Hidaka , Naoya Hirase , Yasuhiro Kouchi
IPC分类号： B21B19/04
CPC分类号： B21B25/00 , B21B19/04 , C23C8/14
摘要： A plug material having a prescribed shape is prepared, the prepared plug material is thermally treated in a heat treatment atmosphere that contains at least 1.0 vol. % oxygen at a heat treatment temperature of at least 950° C. and less than 1050° C. and thus a plug having an oxide scale layer 30 on the surface is manufactured. According to the manufacturing method, pores PO that extend along the surface SF of the plug material are formed under outer scale layer 20 in the oxide scale layer 30, which allows cracks to be more easily propagated in the outer scale layer 20. Therefore, the outer scale layer 20 is more easily peeled off than the conventional one.
摘要翻译：制备具有规定形状的塞子材料，将所制备的塞子材料在包含至少1.0体积％的热处理气氛中进行热处理。在氧化处理温度为至少950℃且低于1050℃的氧气中制造氧，因此制造了表面上具有氧化皮层30的塞子。根据制造方法，在氧化皮层30中的外标尺层20上形成有沿插塞材料的表面SF延伸的孔PO，这允许裂纹在外标尺层20中更容易传播。因此，外标层20比常规剥离更容易。

4. 发明申请

US20090218014A1 Method for Producing Duplex Stainless Steel Seamless Pipe 有权
标题翻译：生产双相不锈钢无缝管的方法
公开(公告)号：US20090218014A1
公开(公告)日：2009-09-03
申请号：US12225545
申请日：2007-03-23
申请人： Naoya Hirase , Tetsuya Nakanishi , Kazuhiro Shimoda , Hirokazu Okada , Tomio Yamakawa , Yasuyoshi Hidaka
发明人： Naoya Hirase , Tetsuya Nakanishi , Kazuhiro Shimoda , Hirokazu Okada , Tomio Yamakawa , Yasuyoshi Hidaka
IPC分类号： C21D8/10
CPC分类号： B21B23/00 , B21B19/04 , C21D1/70 , C21D1/74 , C21D9/08 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/44
摘要： The present invention is to provide a method for producing duplex stainless steel seamless pipe in which a duplex stainless steel billet can be inhibited from generating an oxide scale on the surface thereof during heating and the generation of outer surface flaw can also be prevented. The billet is heated in the a heating furnace for 1.5 hours or more and 4.0 hours or less at a heating temperature of 1250° C. or more and 1320° C. or less while regulating the average concentration of sulfur dioxide (SO2) gas in the atmosphere within the furnace to 0.01 volume % or less.
摘要翻译：本发明提供一种双相不锈钢无缝管的制造方法，其中可以抑制双相不锈钢坯料在加热时在其表面上产生氧化皮，并且还可以防止外表面缺陷的产生。在1250℃以上1320℃以下的加热温度下，在加热炉中将钢坯加热1.5小时以上4.0小时以上，同时调节二氧化硫（SO2）气体的平均浓度炉内气氛为0.01体积％以下。

5. 发明授权

US06440234B1 Martensitic stainless steel products 有权
标题翻译：马氏体不锈钢制品
公开(公告)号：US06440234B1
公开(公告)日：2002-08-27
申请号：US09453714
申请日：1999-12-03
申请人： Hisashi Amaya , Toshiro Anraku , Yasuyoshi Hidaka
发明人： Hisashi Amaya , Toshiro Anraku , Yasuyoshi Hidaka
IPC分类号： C22C3818
CPC分类号： C21D7/06 , Y10S148/909
摘要： A martensitic stainless steel product having a chromium content of 9 to 15% by weight and a surface from which mill scales generated during production are removed by a shot blasting. The surface satisfies that, when a color image of the surface taken with 640×480 pixels is analyzed on blue color and a histogram of the pixel numbers and the tones divided into 0 to 255 classes is obtained, a relationship between the maximum frequency Yp and the tone value Xp at which Yp is counted satisfies an inequality, 800Xp−Yp−27000>0. This steel product is superior in weatherability under atmospheric environments, and also superior in sulfide stress cracking resistance under environments containing hydro-sulfide.
摘要翻译：通过喷丸除去铬含量为9〜15重量％的马氏体不锈钢产品和在生产过程中产生的氧化皮的表面。表面满足当以蓝色分析以640×480像素拍摄的表面的彩色图像，并且获得被划分为0至255类的像素数和色调的直方图时，最大频率Yp和色调之间的关系计数Yp的值Xp满足不等式，800Xp-Yp-27000> 0。该钢制品在大气环境下的耐候性优异，在含硫化氢的环境下，耐硫化物应力开裂性也优异。

6. 发明授权

US08815347B2 Antioxidant agent and process for producing metallic material 有权
标题翻译：抗氧化剂及其制造方法
公开(公告)号：US08815347B2
公开(公告)日：2014-08-26
申请号：US13880780
申请日：2011-07-13
申请人： Kazuhiro Shimoda , Keishi Matsumoto , Yasuyoshi Hidaka , Tomio Yamakawa , Shuichi Akiyama , Takahisa Kato
发明人： Kazuhiro Shimoda , Keishi Matsumoto , Yasuyoshi Hidaka , Tomio Yamakawa , Shuichi Akiyama , Takahisa Kato
IPC分类号： B05D3/02 , C03C8/22 , C03C8/02 , C03C8/14 , C03C8/16 , C09K15/02
CPC分类号： C03C8/22 , B05D3/02 , B21B45/0242 , C03C3/087 , C03C3/093 , C03C8/02 , C03C8/04 , C03C8/14 , C03C8/16 , C09K15/02 , C21D1/68 , C21D1/70 , C21D8/0284 , C21D8/10 , C23C24/082 , C23C24/10
摘要： There is provided an antioxidant agent excellent in anti-dripping property and anti-peeling property. The antioxidant agent in accordance with the present invention contains a plurality of glass frits having different softening points, potter's clay, and bentonite and/or sepiolite. On account of the potter's clay, the antioxidant agent applied to the surface of a metallic starting material is less liable to drip down. Further, on account of the bentonite and/or sepiolite, the antioxidant agent is less liable to peel off the surface of the metallic starting material.
摘要翻译：提供了抗滴落性和抗剥离性优异的抗氧化剂。根据本发明的抗氧化剂含有多种具有不同软化点的玻璃料，陶土，膨润土和/或海泡石。由于陶器的粘土，施加到金属原料表面的抗氧化剂不容易滴落。此外，由于膨润土和/或海泡石，抗氧化剂不易从金属原料的表面剥离。

7. 发明授权

US08544306B2 Plug, piercing-rolling mill, and method of producing seamless tube by using the same 有权
标题翻译：插头，穿孔轧机，以及使用其制造无缝管的方法
公开(公告)号：US08544306B2
公开(公告)日：2013-10-01
申请号：US13212929
申请日：2011-08-18
申请人： Yasuto Higashida , Yasuyoshi Hidaka , Kazuhiro Shimoda , Tomio Yamakawa
发明人： Yasuto Higashida , Yasuyoshi Hidaka , Kazuhiro Shimoda , Tomio Yamakawa
IPC分类号： B21B19/04
CPC分类号： B21B25/00 , B21B19/04 , B21B25/04
摘要： A plug includes a front edge portion having a convex curvature; a cylindrical portion having a truly or nearly cylindrical shape; a trunk portion having an outer diameter gradually increasing toward a rear edge thereof; a mandrel joint provided in a rear edge portion of the plug; a lubricant ejection hole running through the trunk portion from the mandrel joint that opens on the surface of the cylindrical portion; and a coating comprising oxides and Fe that is formed on the base metal surface of each of the front edge portion as well as the trunk portion by arc spraying using an iron wire. In this way, the plug can prevent inner surface flaws from occurring in a hollow blank that is deformed by piercing-rolling, and can extend its life without requiring a long time for making it.
摘要翻译：塞子包括具有凸曲率的前边缘部分; 具有真正或近似圆柱形形状的圆柱形部分; 躯干部分的外径朝向其后缘逐渐增加; 设置在所述插头的后端部的心轴接头; 润滑剂喷射孔，其从所述心轴接头穿过所述躯干部分，所述心轴接头在所述圆筒部分的表面上开口; 以及通过使用铁丝的电弧喷涂而形成在前边缘部分和后端部的基底金属表面上的氧化物和Fe的涂层。以这种方式，塞子可以防止在通过穿孔轧制变形的中空坯件中发生内表面缺陷，并且可以延长其使用寿命而不需要很长时间来制造它。

8. 发明授权

US08082768B2 Piercing and rolling plug, method of regenerating such piercing and rolling plug, and equipment line for regenerating such piercing and rolling plug 有权
标题翻译：穿孔和滚塞，再生这种穿孔和滚压塞的方法，以及用于再生这种穿孔和滚压塞的设备线
公开(公告)号：US08082768B2
公开(公告)日：2011-12-27
申请号：US12490857
申请日：2009-06-24
申请人： Yasuyoshi Hidaka , Kazuhiro Shimoda , Kouji Nakaike , Naoya Hirase , Yasuto Higashida , Takateru Inage , Jyun Nagakita , Masaharu Nakamori , Fumihito Yoshikawa , Yoshihiko Hayashi , Takayuki Aisaka
发明人： Yasuyoshi Hidaka , Kazuhiro Shimoda , Kouji Nakaike , Naoya Hirase , Yasuto Higashida , Takateru Inage , Jyun Nagakita , Masaharu Nakamori , Fumihito Yoshikawa , Yoshihiko Hayashi , Takayuki Aisaka
IPC分类号： B21B19/04
CPC分类号： C23C4/12 , B21B25/00 , B21B25/04 , B21B25/06 , C23C4/00 , C23C4/02 , C23C4/11 , C23C4/131 , Y10T29/49723 , Y10T29/5137
摘要： A piercing and rolling plug has a film composed of oxides such as Fe3O4 and FeO and Fe (metal) as being formed on the surface of the base metal by electric arc spraying using an iron wire whose main component is Fe and, owing to this film, a plug excellent in heat-shielding and seizure-preventing effects can be realized and the lifetime of the plug can be prolonged. Further, in regenerating this plug, a film can be re-formed via the steps of shot blasting of the as-used plug in piercing and rolling and electric arc spraying in that order; thus, it is possible to regenerate the plug at low cost and in a short period of time.
摘要翻译：穿孔滚动塞具有由氧化物如Fe 3 O 4和FeO和Fe（金属）构成的膜，其通过使用主要成分为Fe的铁丝通过电弧喷涂形成在母材表面上，并且由于该膜能够实现优良的隔热防止效果的塞子，延长塞子的使用寿命。此外，在再生该插头时，可以通过以下步骤重新形成薄膜：依次进行穿孔和滚压以及电弧喷涂中使用的插头的喷丸处理; 因此，可以在低成本和短时间内再生插头。

9. 发明申请

US20090084151A1 PROCESS FOR PRODUCING SEAMLESS STAINLESS STEEL PIPE 有权
标题翻译：生产无缝不锈钢管的方法
公开(公告)号：US20090084151A1
公开(公告)日：2009-04-02
申请号：US12258851
申请日：2008-10-27
申请人： Yasuyoshi Hidaka , Toshihide Ono , Satoshi Matsumoto , Kouji Nakaike , Sumio Iida
发明人： Yasuyoshi Hidaka , Toshihide Ono , Satoshi Matsumoto , Kouji Nakaike , Sumio Iida
IPC分类号： B21B19/04
CPC分类号： B21B23/00 , B21B3/02 , B21B17/02 , B21B25/04 , B21B45/00 , B21B45/0269 , C21D3/04 , C21D9/08
摘要： A process for producing seamless pipes which comprises conducting a piercing rolling step, a elongating rolling step using a mandrel bar, and a sizing rolling step and subsequently conducting a product heat treatment. In the process, when the carbon-equivalent weight, namely the sum of the weight of graphite in the lubricant and the carbon content in the organic binder, per unit area of the lubricant adhering to the mandrel bar surface in the above-mentioned step of elongating rolling is expressed by C (g/m2) or the maximum extent of carburization in the inner surface of the pipe to be heat-treated but prior to the heat treatment is expressed by ΔC (% by mass), the heating temperature for the pipe to be heat-treated is expressed by T (° C.), and the time during which a decarburizing gas is blown into the inside of the pipe to be heat-treated is expressed by t1 or t2 (seconds), and further, the blowing time calculated taking into account the wall thickness reduction in the step of cold working is expressed by t3 or t4 (seconds), a predetermined relation is satisfied and the actual decarburizing gas blowing time in the heat treatment is longer than the time t1, t2, t3 or t4 (seconds), whereby seamless stainless steel pipes reduced in carburized layer formation can be produced even when the carbon adhesion to the pipe inner surface is caused in, for example, mandrel mill rolling.
摘要翻译：一种生产无缝管的方法，包括进行穿孔轧制步骤，使用芯棒的拉伸轧制步骤和施胶轧制步骤，随后进行产品热处理。在该过程中，当上述步骤中碳当量重量即润滑剂中的石墨重量与有机粘合剂中的碳含量的总和相对于在芯棒表面附着的润滑剂的单位面积时，拉伸轧制由C（g / m 2）表示，或被热处理的管内表面的最大渗碳量表示为热处理之前的ΔC（质量％），加热温度为待热处理的管道由T（℃）表示，并且将脱碳气体吹入待热处理管内的时间由t1或t2（秒）表示，此外，考虑到冷加工步骤中的壁厚减少而计算的吹送时间由t3或t4（秒）表示，满足预定关系，并且热处理中的实际脱碳气体吹送时间长于时间t1， t2，t3或t4（秒），由此海即使当在例如芯棒式无缝管轧机轧制中引起对内表面的碳附着时，也可以生产减少渗碳层形成的无尘不锈钢管。

10. 发明申请

US20090071221A1 Mandrel Bar for High-Alloy Rolling, Method for Surface Treating a Mandrel Bar, Method for Producing Mandrel Bar, and Method for Operating Seamless Pipe Mill 有权
标题翻译：用于高合金轧制的芯棒，用于表面处理芯棒的方法，用于生产芯棒的方法以及操作无缝管铣的方法
公开(公告)号：US20090071221A1
公开(公告)日：2009-03-19
申请号：US12236970
申请日：2008-09-24
申请人： Sumio Iida , Yasuyoshi Hidaka , Mitsuru Yoshizawa , Koji Nakaike
发明人： Sumio Iida , Yasuyoshi Hidaka , Mitsuru Yoshizawa , Koji Nakaike
IPC分类号： B21D9/01 , C25D5/00 , B21B27/06
CPC分类号： B21B25/00 , B21B3/02 , B21B17/02 , B21B17/04 , B21B23/00 , B21B25/04 , C21D8/10 , C21D8/105 , C21D9/08 , Y10S72/70
摘要： A method for surface treating a mandrel bar used for hot rolling of high-alloy seamless steel pipe is provided. The method includes heat treating the mandrel bar to develop a scale, and after heat treatment, rolling ordinary steel comprising 8% or less of chromium for at least 50 passes. This achieves a mandrel bar for rolling high-alloy steel possessing both durability and superior resistance to seizure
摘要翻译：提供了一种用于表面处理用于高合金无缝钢管的热轧的芯棒的方法。该方法包括热处理芯棒以形成刻度，并且在热处理之后，将包含8％或更少的铬的普通钢轧制至少50次。这实现了具有耐久性和优异的抗咬合性的用于轧制高合金钢的芯棒

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