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    METHOD FOR PRODUCING SEAMLESS STEEL TUBE/PIPE
    2.
    发明申请
    METHOD FOR PRODUCING SEAMLESS STEEL TUBE/PIPE 审中-公开
    生产无缝钢管/管的方法

    公开(公告)号：US20130269407A1

    公开(公告)日：2013-10-17

    申请号：US13996128

    申请日：2011-12-20

    申请人： Yosuke Tatebayashi ,  Yasuto Higashida ,  Sumio Iida

    发明人： Yosuke Tatebayashi ,  Yasuto Higashida ,  Sumio Iida

    IPC分类号： B21B25/04 ,  B21B19/04

    CPC分类号： B21B25/04 ,  B21B19/04 ,  C10M173/02 ,  C10M2201/087 ,  C10M2201/0873 ,  C10M2201/1033 ,  C10N2240/403 ,  C10N2240/409 ,  C10N2250/121

    摘要： When performing piercing-rolling by use of a plug with a protection film on its surface, applying a lubricant made of an aqueous solution containing a total of 5 to 30% mass % of one or more of boron oxide, boric acid, and amine borate to the protection film on the plug surface, and using this plug for piercing-rolling makes it possible to realize the increase of the life of plug for piecing-rolling without reducing the efficiency of piercing-rolling. The plug can be cooled after the piecing-rolling, the application of the above described lubricant is performed when the surface temperature of the front edge of plug decreases to 100° C. or less, and the plug is reused for the piercing-rolling. In this occasion, the protection film on the plug . surface can be formed by arc spraying iron wire material onto the surface of the base metal of plug, and comprises oxides and Fe.

    摘要翻译： 当在其表面上使用具有保护膜的塞子进行穿孔轧制时，涂布由含有总计5至30％质量％的硼氧化物，硼酸和胺硼酸盐中的一种或多种的水溶液制成的润滑剂 在插头表面上的保护膜上，并且使用该插头进行穿孔轧制，可以在不降低穿孔效率的情况下实现接头插头的寿命的增加。 塞子在接头轧制后可以冷却，当塞子前端的表面温度降低到100℃以下时，执行上述润滑剂的应用，并且将塞子重新用于穿孔轧制。 在这种情况下，保护膜上的插头。 表面可以通过电弧喷涂铁丝材料形成在塞子的母金属表面上，并且包括氧化物和Fe。

    Process for producing seamless stainless steel pipe
    3.
    发明授权
    Process for producing seamless stainless steel pipe 有权
    生产无缝不锈钢管的工艺

    公开(公告)号：US08307688B2

    公开(公告)日：2012-11-13

    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 ,  B21B17/04

    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程度，但是在热处理之前用＆Dgr; C（质量％）表示，加热温度 对于待热处理的管道由T（℃）表示，并且将脱碳气体吹入待热处理管内部的时间由t1或t2（秒）表示，并且 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。

    Powdered lubricant composition for hot working and method for manufacturing seamless tubes
    7.
    发明申请
    Powdered lubricant composition for hot working and method for manufacturing seamless tubes 有权
    用于热加工的粉末润滑剂组合物和用于制造无缝管的方法

    公开(公告)号：US20070287642A1

    公开(公告)日：2007-12-13

    申请号：US11798950

    申请日：2007-05-18

    申请人： Kenichi Sasaki ,  Sumio Iida ,  Shizuo Mori ,  Atsushi Ito

    发明人： Kenichi Sasaki ,  Sumio Iida ,  Shizuo Mori ,  Atsushi Ito

    IPC分类号： C10M173/02

    CPC分类号： C10M103/06 ,  B21B25/04 ,  B21B45/0263 ,  C10M111/02 ,  C10M125/26 ,  C10M2201/0623 ,  C10M2201/087 ,  C10M2201/0873 ,  C10M2207/1253 ,  C10M2207/126 ,  C10N2210/01 ,  C10N2210/02 ,  C10N2230/00 ,  C10N2230/06 ,  C10N2240/403 ,  C10N2250/08

    摘要： With a powdered lubricant composition by the invention, in addition to the blending of one of anhydrous, pentahydrate or decahydrate salt in sodium borate and one of sodium or calcium salt of fat acid, mixing calcium or lithium carbonate as an auxiliary lubricant can prevent sodium borate (Na2B4O7), solidified as amorphous after a tube-making process, from moisture absorbance, drying and crystallization to thereby suppress the formation of Na2B4O7.5H2O on inside surfaces of finished-product tubes, thus enabling to circumvent occurrence of the white scales. Concurrently, they provide good diffusivity toward the working surface of workpiece, thus enabling to prolong a life of the mandrel bar and to widely be adopted as the most suitable powdered lubricant for manufacturing seamless tubes by Mandrel Mill rolling.

    摘要翻译： 通过本发明的粉末状润滑剂组合物，除了在硼酸钠和脂肪酸的钠盐或钙盐之一中的无水五水合物或十水合物盐之一的混合之外，混合碳酸钙或碳酸锂作为辅助润滑剂可以防止硼酸钠 （Na 2 B 4 S 7 O 7），在制管过程中固化为无定形，从吸水率，干燥和结晶到由此抑制 在最终产品管的内表面上形成Na 2 B 4 O 7 H 2 O 2 O 2， 从而能够规避白鳞的发生。 同时，它们对工件的工作表面提供良好的扩散性，从而能够延长芯棒的使用寿命，并被广泛地用作通过心轴轧机轧制制造无缝管的最合适的粉末润滑剂。

    Process for producing stainless steel pipe
    8.
    发明授权
    Process for producing stainless steel pipe 有权
    不锈钢管生产工艺

    公开(公告)号：US08047039B2

    公开(公告)日：2011-11-01

    申请号：US12247923

    申请日：2008-10-08

    申请人： Yasuyoshi Hidaka ,  Satoshi Matsumoto ,  Toshihide Ono ,  Kouji Nakaike ,  Sumio Iida ,  Hiroshi Nogami

    发明人： Yasuyoshi Hidaka ,  Satoshi Matsumoto ,  Toshihide Ono ,  Kouji Nakaike ,  Sumio Iida ,  Hiroshi Nogami

    IPC分类号： B21B17/10 ,  B21D37/16

    CPC分类号： B21B23/00 ,  B21B3/02 ,  B21B17/10 ,  B21B17/14 ,  B21B19/04 ,  B21B25/04 ,  B21B45/004 ,  C21D1/76 ,  C21D1/767 ,  C21D3/04 ,  C21D8/10 ,  C21D9/08 ,  C22C38/02 ,  C22C38/44 ,  C22C38/58

    摘要： A process for stainless-steel pipe production which comprises piercing rolling a raw material stainless steel containing, by mass, Cr: 10-30%, to give a hollow shell, elongating rolling the hollow shell using a mandrel bar, together with a graphite-free lubricant, to give a finishing rolling blank pipe and heating the blank pipe in a reheating furnace and subjecting the same to finishing rolling by sizing rolling to produce a hot-finished pipe, and then subjecting this pipe as a mother pipe to cold working to produce a stainless-steel pipe. In the reheating furnace, the finishing rolling blank pipe is heated to 1000° C. or more and subjected to heating in which an oxidizing gas is blown into the pipe inside, whereby a stainless-steel pipe which is inhibited from forming a carburized layer in the pipe inner surface can be produced. When the finishing rolling by sizing rolling to give a cold working mother pipe is carried out by stretch reducer rolling at 860-1050° C., an annealing heat treatment of the mother pipe for cold working can be omitted. Thus, a stainless-steel pipe having excellent surface quality can be efficiently produced.

    摘要翻译： 一种不锈钢管制造方法，其特征在于，将包含Cr：10〜30％的原料不锈钢进行穿孔轧制，得到中空壳，使用芯棒将中空壳拉伸，并与石墨 无需润滑剂，得到精轧坯管，再加热炉内的坯管加热，通过定径轧制进行精轧，制成热轧管，然后将该管作为母管进行冷加工 生产不锈钢管。 在再热炉中，将精轧坯管加热至1000℃以上，进行向内部吹入氧化气体的加热，由此抑制渗碳层形成的不锈钢管 可以制造管内表面。 当通过在860-1050℃下的拉伸减速机轧制进行通过定径轧制得到冷加工母管的精轧时，可以省略用于冷加工的母管的退火热处理。 因此，可以有效地制造具有优异表面质量的不锈钢管。

    LUBRICANT FOR HOT WORKING AND METHOD FOR PRODUCING SEAMLESS STEEL PIPE
    9.
    发明申请
    LUBRICANT FOR HOT WORKING AND METHOD FOR PRODUCING SEAMLESS STEEL PIPE 有权
    用于热加工的润滑剂和生产无缝钢管的方法

    公开(公告)号：US20100263422A1

    公开(公告)日：2010-10-21

    申请号：US12824705

    申请日：2010-06-28

    申请人： Kenichi Saito ,  Sumio Iida

    发明人： Kenichi Saito ,  Sumio Iida

    IPC分类号： B21B19/04 ,  C10M103/06

    CPC分类号： C10M173/02 ,  C10M2201/02 ,  C10M2201/062 ,  C10M2201/102 ,  C10N2230/06 ,  C10N2230/08 ,  C10N2230/12 ,  C10N2230/40 ,  C10N2240/403 ,  C10N2240/404 ,  C10N2240/408 ,  C10N2250/12 ,  C10N2210/08 ,  C10N2210/01

    摘要： There is provided a lubricant for hot plastic working, which contains 20 to 40 mass % of iron oxide and 10 to 30 mass % of sodium silicate, wherein impurities are 3 mass % or less, and the lubricant contains 40 to 60 mass % of water. By virtue of combined action of these components, the lubricant exhibits excellent lubricity and suppliability and does not adversely affect the corrosion resistance of product. The lubricant is suitably used for lubricating a guide shoe in piercing-rolling, for example, a high-Cr steel and achieves a great effect of preventing a seizure flaw from occurring on the outer surface of product by being applied directly to the outer surface of a workpiece just before piercing rolling, preferably, within one second before starting piercing rolling.

    摘要翻译： 提供了热塑性加工用润滑剂，其含有20〜40质量％的氧化铁和10〜30质量％的硅酸钠，其中杂质为3质量％以下，润滑剂含有40〜60质量％的水 。 通过这些组分的组合作用，润滑剂表现出优异的润滑性和可供应性，并且不会不利地影响产品的耐腐蚀性。 该润滑剂适合用于润滑例如高Cr钢的穿孔轧制中的导靴，并且通过直接施加到外部表面的方式实现防止产品外表面上发生攫取缺陷的巨大效果 在穿孔轧制之前的工件，优选在开始穿孔轧制之前的一秒内。

    Manufacturing method and cleaning equipment for seamless tube
    10.
    发明授权
    Manufacturing method and cleaning equipment for seamless tube 有权
    无缝管的制造方法和清洗设备

    公开(公告)号：US07469565B2

    公开(公告)日：2008-12-30

    申请号：US11892327

    申请日：2007-08-22

    申请人： Kouji Nakaike ,  Yasuyoshi Hidaka ,  Sumio Iida ,  Hiroki Kusuda ,  Masami Sakiyama

    发明人： Kouji Nakaike ,  Yasuyoshi Hidaka ,  Sumio Iida ,  Hiroki Kusuda ,  Masami Sakiyama

    IPC分类号： B21B19/04

    CPC分类号： B21B17/04 ,  B08B1/02 ,  B08B1/04 ,  B08B9/023 ,  B21B23/00 ,  B21B25/00 ,  B21B25/04

    摘要： A seamless tube is manufactured while effectively suppressing the occurrence of carburization in the seamless tube without interfering with operations.A seamless tube is manufactured by a step of washing at least a portion of a conveyor installed in a conveying step of a mandrel bar B which is situated from a lubricant applying device 7 to the entrance of a mandrel mill 8, a step of washing, on the upstream side of the lubricant applying device 7, a mandrel bar B which was used for elongation rolling, and a step of applying a non-graphite-based lubricant to the mandrel bar B with the lubricant applying device 7, wherein the conveyor and the mandrel bar B are each washed such that the amount of graphite C2 (g/m2) adhering to the surface of the mandrel bar B before it is provided to elongation rolling and the amount of carbon C1 (g/m2) contained in the organic binder of the applied lubricant satisfy Equation 1: 0.08×C1+0.05×C2≦3 and Equation 2: 3≦C1+C2≦50.

    摘要翻译： 制造无缝管，同时有效地抑制无缝管中渗碳的发生，而不干扰操作。 通过将安装在从润滑剂涂布装置7的芯棒B的输送步骤中安装的输送机的至少一部分洗涤到芯棒式无缝管轧机8的入口的步骤，洗涤步骤， 在润滑剂涂布装置7的上游侧，用于伸长轧制的芯棒B和使用润滑剂涂敷装置7向芯棒B涂布非石墨系润滑剂的工序，其中，输送机 芯棒B各自被洗涤，使得在将其提供给伸长轧制之前粘附到芯棒B的表面上的石墨C2（g / m 2）的量和有机物中所含的碳的量（g / m 2） 所施加的润滑剂的粘合剂满足式1：0.08xC1 + 0.05xC2 <= 3和等式2：3 <= C1 + C2 <= 50。