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公开(公告)号：JP2012130945A
公开(公告)日：2012-07-12
申请号：JP2010285670
申请日：2010-12-22
Applicant: Sumitomo Metal Ind Ltd , 住友金属工業株式会社
Inventor： TATEBAYASHI YOSUKE , HIGASHIDA YASUTO , IIDA SUMIO
CPC classification number: B21B25/04 , B21B19/04 , C10M173/02 , C10M2201/087 , C10M2201/0873 , C10M2201/1033 , C10N2240/403 , C10N2240/409 , C10N2250/121
Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a seamless steel pipe, which can efficiently manufacture the seamless steel pipe by reliably improving a service life of a boring rolling plug without declining efficiency of boring rolling.SOLUTION: When boring rolling is performed by using a plug in which a protective coating is formed on the surface, a lubricant of a water solution including 5-30 mass% in total of one type or two types or more out of boric oxide, boric acid and boric acid amine salt is applied to the protective coating on the plug surface. The plug is used for the boring rolling. After the boring rolling, the plug is cooled, and in the state where surface temperature of the plug tip is lowered to 100°C or less, the lubricant is applied. It is preferable to use the plug for the boring rolling again. Preferably, the protective coating on the plug surface is formed by electric arc spraying of an iron wire material on the surface of a plug base material, and comprises oxide and Fe.
Abstract translation: 解决问题的方案：提供一种制造无缝钢管的方法，其可以通过在不降低镗削效率的情况下可靠地提高镗孔塞的使用寿命来有效地制造无缝钢管。 解决方案：当通过使用在表面上形成保护涂层的塞子进行镗削时，包含总共5〜30质量％的一种或两种以上的硼的水溶液的润滑剂 氧化物，硼酸和硼酸胺盐施加到插头表面上的保护涂层上。 该插头用于镗孔。 在镗削之后，将塞子冷却，并且在将塞头的表面温度降低到100℃以下的状态下，施加润滑剂。 最好再次使用插头进行镗削。 优选地，塞表面上的保护涂层是通过电弧喷涂铁丝材料形成在塞子基材的表面上，并且包括氧化物和Fe。 版权所有（C）2012，JPO＆INPIT
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公开(公告)号：JP2006082100A
公开(公告)日：2006-03-30
申请号：JP2004267823
申请日：2004-09-15
Applicant: Sumitomo Metal Ind Ltd , 住友金属工業株式会社
Inventor： NAKAIKE HIROTSUGU , IIDA SUMIO , HIDAKA YASUYOSHI , YOSHIZAWA MITSURU
Abstract: PROBLEM TO BE SOLVED: To provide a method by which the service life of a mandrel bar is improved without bringing about the deterioration of the manufacturing efficiency and thickness accuracy of a seamless steel tube.
SOLUTION: This method is a method by which the service life of the mandrel bar which is used for rolling with a mandrel mill is improved and which includes a first process for removing a material which is coagulated on the outer surface of the mandrel bar used for rolling and of which a tube stock is composed and a second process for forming an iron hydroxide film on the outer surface of the mandrel bar.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：提供一种改善芯棒的使用寿命而不会导致无缝钢管的制造效率和厚度精度降低的方法。 解决方案：该方法是改善用于用芯棒式无缝管轧机轧制的芯棒的使用寿命的方法，其包括用于去除在心轴的外表面上凝结的材料的第一工艺 用于轧制并且其中组成管材的棒和在芯棒的外表面上形成氢氧化铁膜的第二工艺。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2005349451A
公开(公告)日：2005-12-22
申请号：JP2004174316
申请日：2004-06-11
Applicant: Sumitomo Metal Ind Ltd , 住友金属工業株式会社
Inventor： ANRAKU TOSHIRO , HIDAKA YASUYOSHI , IIDA SUMIO
Abstract: PROBLEM TO BE SOLVED: To surely and greatly improve durable life of a mandrel bar for hot working of seamless pipes even in the case of hot rolling of seamless steel pipes made of stainless steel which requires severe hot rolling conditions.
SOLUTION: The mandrel bar for hot working of seamless pipes comprises a first layer on the surface, which first layer contains at least one kind of Fe
2 O
3 , Fe
3 O
4 , and FeO or FeCr
2 O
4 and has an arithmetical mean roughness Ra of 0.05 to 5 μm at the surface and has a thickness of 5 to 50 μm, and a second layer composed of an inorganic coating film coated on the first layer, which inorganic coating film contains 10 to 80 mass% of a particulate oxide-based layered compound and the remainder composed of at least one or more kinds of alkali metal salt of boric acid or amine salt, and has a thickness of 10 to 500 μm.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：即使在需要严格的热轧条件的由不锈钢制成的无缝钢管的热轧的情况下，也可以大大提高用于无缝管热加工的芯棒的耐用寿命。 解决方案：用于无缝管热加工的芯棒包括表面上的第一层，该第一层含有至少一种Fe
2 O 3 ， FeO 3 / SB> 4 ，FeO或FeCr 2 4 ，其算术平均粗糙度Ra为0.05〜 5μm，厚度为5〜50μm，第2层由无机涂膜构成，该无机涂膜含有10〜80质量％的氧化物系微粒化层状化合物和 剩余部分由至少一种以上的硼酸或胺盐的碱金属盐构成，其厚度为10〜500μm。 版权所有（C）2006，JPO＆NCIPI -
公开(公告)号：JP2002248507A
公开(公告)日：2002-09-03
申请号：JP2001046155
申请日：2001-02-22
Applicant: SUMITOMO METAL IND
Inventor： IIDA SUMIO , ANRAKU TOSHIRO , SHIMODA KAZUMUNE , YAMAKAWA TOMIO
IPC: B21B25/04
Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a seamless steel pipe by which the frequency of occurrence of a fault on the inner face can be decreased remarkably at drill rolling passing through one pass by one plug. SOLUTION: The method of this invention is used to offer an object to the drill rolling passing through the one pass after coating a scale fusing substance of which the eutectic temperature with FeO is less than 1,200 deg.C on the scale of the plug surface in the state on which scaling hot treatment has been carried out, preferably, on the scale of the plug surface after the scale of a porous outer layer is precluded.
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公开(公告)号：JP2002115975A
公开(公告)日：2002-04-19
申请号：JP2000312208
申请日：2000-10-12
Applicant: SUMITOMO METAL IND
Inventor： KIMURA KAZUKIYO , ANRAKU TOSHIRO , TSUBOUCHI KENJI , IIDA SUMIO
Abstract: PROBLEM TO BE SOLVED: To provide a member for a heating oven where no build-ups are formed. SOLUTION: In the member for the heating oven, a surface-layer section of a part in contact with at least a steel material to be heated is made of a material an oxidation speed of which calculated from the average thickness of a surface oxidation layer after an oxidation test for 100 hours under the same atmosphere and temperature as those of a heating oven that is used for the member for the heating oven is 0.1 μm/h or more.
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Patent Agency Ranking
公开(公告)号：JP2001340903A
公开(公告)日：2001-12-11
申请号：JP2000166894
申请日：2000-06-05
Applicant: SUMITOMO METAL IND
Inventor： NAGASE YUTAKA , IIDA SUMIO
Abstract: PROBLEM TO BE SOLVED: To supply effectively chemical agents and the like to the internal surface of a hollow pipe stock and also prevent flaws on the internal surface of the pipe stock, when manufacturing a seamless steel pipe by a drawing rolling. SOLUTION: (1) A manufacturing method of a seamless steel pipe characterized in that at least one of conditions among injection pressure of carrier gas, a total supply amount of chemical agents and the like, and to total time of the chemical agents and the like is adjusted on the basis of rolling information, when the hollow pipe stock is rolled by a drawing rolling. (2) A manufacturing equipment for the seamless steel pipe characterized in that the equipment is provided with a rolling information recognition portion identifying information for the hollow pipe stock or the chemical agent sand the like, an injection condition determining portion settling conditions for injection pressure, a supply amount and the like, and an injecting condition adjusting portion realizing determined injecting conditions. (3) A manufacturing method and equipment supplying the chemical agents and the like at injection by means of carrier gas, and also carrying it after injection, while rotating the hollow pipe material.
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47.发明专利
公开(公告)号：JP2001001016A
公开(公告)日：2001-01-09
申请号：JP16751399
申请日：1999-06-14
Applicant: SUMITOMO METAL IND
Inventor： IIDA SUMIO , TSUBOUCHI KENJI , NAGASE YUTAKA , IMAMURA MASAMI
Abstract: PROBLEM TO BE SOLVED: To obtain a mandrel bar having longer life without generating burning even when the bar is used for rolling high alloy steel containing chromium by forming a chromium plating film in the range of the specific thickness on the mandrel bar. SOLUTION: The chromium plating film of 60-200 μm thick is formed on the surface of a base metal of the mandrel bar. The major cause of generation of burning is peeling of the chromium plating by heat cracks and a lot of burnings are generated in parts where the base metal of the bar is exposed by the elimination of the chromium plating film by wear, so it is necessary to thicken the chromium plating film and, when the thickness is 60-200 μm, the life is rapidly improved. The surface roughness Ra in the direction of the axial length of the base metal is defined as >=0.1 to =2 wt.% Cr in rolling with a mandrel mill, burning is not generated.
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公开(公告)号：JP2008049345A
公开(公告)日：2008-03-06
申请号：JP2006224812
申请日：2006-08-22
Applicant: Sumitomo Metal Ind Ltd , 住友金属工業株式会社
Inventor： NAKAIKE HIROTSUGU , HIDAKA YASUYOSHI , IIDA SUMIO
Abstract: PROBLEM TO BE SOLVED: To provide mandrel bar cleaning facility by which carburization caused on the inside surface of a tube during elongation is effectively restrained without hindering an operation.
SOLUTION: This mandrel bar cleaning facility 15 cleans a mandrel bar B which is pulled out of a mandrel bar conveying line after being used for the elongation of a tube in a mandrel mill 8. The mandrel bar cleaning facility 15 is provided with: conveying devices 17, 18 for conveying the mandrel bar B in the axial direction while revolving the bar B in the peripheral direction; and a cleaning devices 1d which are arranged oppositely to the side parts of the mandrel bar B conveyed with the conveying devices 17, 18 and from which high-pressure water the water pressure of which is 0.2-150 MPa (preferably 20-150 MPa) is jetted toward the outside surface of the mandrel bar B.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：为了提供在延伸期间在管内表面引起渗碳而不妨碍操作的芯杆清洗设备。 解决方案：该芯棒清洁设备15清洁在用于在芯棒式无缝管轧机8中的管的伸长率之后从芯棒输送线拉出的芯棒B.芯棒清洁设备15设置有 ：用于沿轴向传送芯棒B的输送装置17,18，同时沿圆周方向旋转条B; 以及与输送装置17,18输送的芯棒B的侧部相对配置的水压为0.2〜150MPa（优选为20〜150MPa）的高压水的清洗装置1d， 朝向芯棒B的外表面喷射。版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2007314875A
公开(公告)日：2007-12-06
申请号：JP2007114861
申请日：2007-04-24
Applicant: Sumitomo Metal Ind Ltd , Takara Standard Co Ltd , タカラスタンダード株式会社 , 住友金属工業株式会社
Inventor： SHIMODA KAZUMUNE , YAMAKAWA TOMIO , OKADA KOICHI , HIDAKA YASUYOSHI , IIDA SUMIO , DOHARA TADASHI , MATSUMOTO KEIJI , MURAKAMI KOSUKE , TAKEUCHI KENJI , AKIYAMA SHUICHI
Abstract: PROBLEM TO BE SOLVED: To provide an antioxidant composition for a heat-treatment of a steel pipe, capable of preventing formation of roller marks on the obtained steel pipe by inhibiting oxidation of the steel pipe to suppress formation of scales in the heat-treatment of the steel pipe.
SOLUTION: The antioxidant composition for the heat-treatment of the steel pipe comprises a plurality of glass frits having different softening points. Among the plurality of glass frits, at least one glass frit has a viscosity of 1,000-1,000,000 dPa s at 1,200°C and another glass frit has a viscosity of 1,000-1,000,000 dPa s at 700°C.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 待解决的问题：提供一种用于钢管的热处理的抗氧化剂组合物，其能够通过抑制钢管的氧化来防止在所获得的钢管上形成辊痕，以抑制热量中的氧化皮的形成 钢管的处理。 解决方案：用于钢管热处理的抗氧化剂组合物包括具有不同软化点的多个玻璃料。 在多个玻璃料中，至少一个玻璃料在1,200℃下的粘度为1,000-1,000,000dPa·s，另一玻璃料在700℃下的粘度为1,000-1,000,000dPa·s。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2006159207A
公开(公告)日：2006-06-22
申请号：JP2004349889
申请日：2004-12-02
Applicant: Sumitomo Metal Ind Ltd , 住友金属工業株式会社
Inventor： IIDA SUMIO , ANRAKU TOSHIRO , HIDAKA YASUYOSHI , INAGE TAKAMITSU , NAKAIKE HIROTSUGU
IPC: B21B25/04
Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a seamless steel pipe by the Mannesmann-mandrel mill process, which method can suppress the generation of carburized layer on the inside surface of the pipe.
SOLUTION: The method for manufacturing the seamless steel pipe comprises piercer-rolling a steel billet and elongation-rolling an obtained hollow shell while inserting a mandrel bar therein with a mandrel mill, wherein the rolling operation in elongation-rolling is carried out so as to satisfy the following condition: (0.015×E+0.0002×T-0.02)×C≤2, where E is an elongation ratio, T is a time (s) from the completion of the mandrel mill rolling until the stripping, and C is a quantity (g/m
2 ) of carbon stuck on the surface of the mandrel bar.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：为了提供一种通过Mannesmann-芯棒式无缝管轧制工艺制造无缝钢管的方法，该方法可以抑制管道内表面上的渗碳层的产生。 解决方案：无缝钢管的制造方法包括对钢坯进行穿孔机轧制，并且在将芯棒在芯棒式无缝管轧机中插入的同时对获得的中空壳进行伸长轧制，其中进行伸长轧制中的轧制操作 满足以下条件：（0.015×E + 0.0002×T-0.02）×C≤2，其中E是伸长率，T是从芯棒式无缝管轧机轧制直到汽提完成的时间， C是碳棒表面附着的碳的量（g / m×SP> 2 ）。 版权所有（C）2006，JPO＆NCIPI
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