公开(公告)号：US07919439B2

公开(公告)日：2011-04-05

申请号：US11798950

申请日：2007-05-18

Applicant: Kenichi Sasaki ,  Sumio Iida ,  Shizuo Mori ,  Atsushi Ito

Inventor： Kenichi Sasaki ,  Sumio Iida ,  Shizuo Mori ,  Atsushi Ito

IPC: C10M125/26 ,  C10M125/10 ,  C10M129/40

CPC classification number: 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

Abstract: 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.

Abstract translation: 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 （Na2B4O7），在制管过程中固化为无定形，从吸湿度，干燥和结晶，从而抑制成品管内表面上形成Na 2 B 4 O 7·5H 2 O，从而能够绕过白色鳞片的发生。 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。

公开(公告)号：US07861565B2

公开(公告)日：2011-01-04

申请号：US12482288

申请日：2009-06-10

Applicant: Kenichi Saito ,  Sumio Iida

Inventor： Kenichi Saito ,  Sumio Iida

IPC: B21B45/02

CPC classification number: B21B25/04 ,  B21B3/02 ,  B21B19/04 ,  B21B23/00

Abstract: In applying a non-graphite-based lubricant composed of, by mass %, 10 to 70% of an oxide-based lamellar compound and 30 to 90% of boric acid onto a mandrel bar, the lubricant film thickness is set from a predetermined master curve for the lubricant film thickness corresponding to an amount of mica. This stably produces a seamless steel pipe of high quality, while preventing seizing marks and internal flaws.

Abstract translation: 在将以质量％计含有10〜70％氧化物系层状化合物和30〜90％硼酸的非石墨系润滑剂涂布在芯棒上的情况下，将润滑剂膜厚度设定为规定的母材 对应于云母量的润滑剂膜厚度的曲线。 这样可以稳定地生产出高品质的无缝钢管，同时防止了标记和内部缺陷。

公开(公告)号：US07816306B2

公开(公告)日：2010-10-19

申请号：US10582324

申请日：2004-12-09

Applicant: Kenichi Sasaki ,  Sumio Iida ,  Shizuo Mori ,  Kazuo Tanaka

Inventor： Kenichi Sasaki ,  Sumio Iida ,  Shizuo Mori ,  Kazuo Tanaka

IPC: C10M173/02 ,  C10M125/20 ,  C10M145/08

CPC classification number: C10M173/02 ,  B21B25/04 ,  B21B45/0242 ,  B21B2045/026 ,  C10M2201/041 ,  C10M2201/061 ,  C10M2201/08 ,  C10M2201/087 ,  C10M2209/062 ,  C10M2209/084 ,  C10M2209/12 ,  C10M2215/042 ,  C10N2240/402 ,  C10N2240/404 ,  C10N2250/12 ,  C10N2250/121

Abstract: The present invention provides a lubricant composition for hot forming which makes it possible to provide lubricity at 80° C. or more without being peeled or washed by the roll cooling water, and which is easily washed under 40° C. without having water resistance. The lubricant composition for hot forming of the present invention comprises: a solid lubricant from 10 to 40% by mass; water-dispersible synthetic resin from 5 to 20% by mass; inorganic acid amine salt from 0.5 to 5% by mass; and water from 45 to 80% by mass.

Abstract translation: 本发明提供一种用于热成型的润滑剂组合物，其可以在80℃以上提供润滑性，而不会被辊冷却水剥离或洗涤，并且在40℃下容易洗涤而不具有耐水性。 本发明的热成型用润滑剂组合物含有10〜40质量％的固体润滑剂， 水分散性合成树脂5〜20质量％ 无机酸胺盐为0.5〜5质量％ 和水为45〜80质量％。

公开(公告)号：US20090293569A1

公开(公告)日：2009-12-03

申请号：US12482288

申请日：2009-06-10

Applicant: Kenichi Saito ,  Sumio Iida

Inventor： Kenichi Saito ,  Sumio Iida

IPC: B21B25/04 ,  B21B45/02

CPC classification number: B21B25/04 ,  B21B3/02 ,  B21B19/04 ,  B21B23/00

Abstract: In applying a non-graphite-based lubricant composed of, by mass %, 10 to 70% of an oxide-based lamellar compound and 30 to 90% of boric acid onto a mandrel bar, the lubricant film thickness is set from a predetermined master curve for the lubricant film thickness corresponding to an amount of mica. This stably produces a seamless steel pipe of high quality, while preventing seizing marks and internal flaws.

Abstract translation: 在将以质量％计含有10〜70％氧化物系层状化合物和30〜90％硼酸的非石墨系润滑剂涂布在芯棒上的情况下，将润滑剂膜厚度设定为规定的母材 对应于云母量的润滑剂膜厚度的曲线。 这样可以稳定地生产出高品质的无缝钢管，同时防止了标记和内部缺陷。

公开(公告)号：US20090205392A1

公开(公告)日：2009-08-20

申请号：US12293391

申请日：2007-03-23

Applicant: Kenichi Sasaki ,  Sumio Iida ,  Shizuo Mori

Inventor： Kenichi Sasaki ,  Sumio Iida ,  Shizuo Mori

IPC: B21C37/06 ,  C10M125/26

CPC classification number: C10M141/02 ,  C10M169/04 ,  C10M2201/062 ,  C10M2201/0623 ,  C10M2201/0873 ,  C10M2201/103 ,  C10M2207/1253 ,  C10M2207/126 ,  C10N2230/02 ,  C10N2230/06 ,  C10N2240/403 ,  C10N2240/404 ,  C10N2210/01 ,  C10N2210/02

Abstract: The present invention provides a lubricant for hot metal working which is capable of inhibiting generation of white scale, attributed to the lubricant, on the surface of a workpiece material and is capable of improving lubricity to obtain favorable appearance of the finished product. The lubricant for hot metal working comprises a silicate compound used for adding to a lubricant composition mainly containing sodium borate.

Abstract translation: 本发明提供了一种用于热金属加工的润滑剂，其能够抑制由于润滑剂而导致的工件材料表面的白色鳞片的产生，并且能够提高润滑性以获得成品的良好外观。 用于热金属加工的润滑剂包括用于添加到主要含有硼酸钠的润滑剂组合物中的硅酸盐化合物。

公开(公告)号：US20090084151A1

公开(公告)日：2009-04-02

申请号：US12258851

申请日：2008-10-27

Applicant: Yasuyoshi Hidaka ,  Toshihide Ono ,  Satoshi Matsumoto ,  Kouji Nakaike ,  Sumio Iida

Inventor： Yasuyoshi Hidaka ,  Toshihide Ono ,  Satoshi Matsumoto ,  Kouji Nakaike ,  Sumio Iida

IPC: B21B19/04

CPC classification number: B21B23/00 ,  B21B3/02 ,  B21B17/02 ,  B21B25/04 ,  B21B45/00 ,  B21B45/0269 ,  C21D3/04 ,  C21D9/08

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20090071221A1

公开(公告)日：2009-03-19

申请号：US12236970

申请日：2008-09-24

Applicant: Sumio Iida ,  Yasuyoshi Hidaka ,  Mitsuru Yoshizawa ,  Koji Nakaike

Inventor： Sumio Iida ,  Yasuyoshi Hidaka ,  Mitsuru Yoshizawa ,  Koji Nakaike

IPC: B21D9/01 ,  C25D5/00 ,  B21B27/06

CPC classification number: B21B25/00 ,  B21B3/02 ,  B21B17/02 ,  B21B17/04 ,  B21B23/00 ,  B21B25/04 ,  C21D8/10 ,  C21D8/105 ,  C21D9/08 ,  Y10S72/70

Abstract: 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

Abstract translation: 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

公开(公告)号：US20090064749A1

公开(公告)日：2009-03-12

申请号：US12247923

申请日：2008-10-08

Applicant: YASUYOSHI HIDAKA ,  Satoshi Matsumoto ,  Toshihide Ono ,  Kouji Nakaike ,  Sumio Iida ,  Hiroshi Nogami

Inventor： YASUYOSHI HIDAKA ,  Satoshi Matsumoto ,  Toshihide Ono ,  Kouji Nakaike ,  Sumio Iida ,  Hiroshi Nogami

IPC: B21B17/10

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20090013750A1

公开(公告)日：2009-01-15

申请号：US12211688

申请日：2008-09-16

Applicant: Sumio Iida

Inventor： Sumio Iida

IPC: B21B23/00

CPC classification number: B21B25/00 ,  B21B19/04 ,  B21B38/00

Abstract: The present invention provides an application method of a Cr-plated mandrel bar repeatedly used in mandrel mill rolling by the Mannesmann tube making process. A regeneration treatment is performed to use the mandrel bar again as a tool of like size when an opening width H of a surface defect generated on the mandrel bar by its use in the mandrel mill rolling is not less than 1.5 mm and a depth of the surface defect is in the range of 0.3 mm to less than 2.0 mm. Alternatively, a downsizing treatment is performed to use the mandrel bar again as a tool of a smaller size when the depth of the surface defect generated on the mandrel bar by its use in the mandrel mill rolling is not less than 2.0 mm. The regeneration treatment or downsizing treatment is performed according to conditions or a configuration of the surface defect to achieve repeated application to the mandrel mill rolling, allowing life-extension of the mandrel bar and improvement of cost performance thereof.

Abstract translation: 本发明提供了通过曼内斯曼管制造方法在芯棒式无缝管轧机轧制中反复使用的镀Cr芯棒的应用方法。 进行再生处理，再次使用芯棒作为类似尺寸的工具，通过在芯棒轧机轧制中使用的芯棒上产生的表面缺陷的开口宽度H不小于1.5mm，深度为 表面缺陷在0.3mm至小于2.0mm的范围内。 或者，当通过在芯棒式无缝管轧机轧制中使用的在芯棒上产生的表面缺陷的深度不小于2.0mm时，进行小型化处理，再次使用芯棒作为较小尺寸的工具。 根据表面缺陷的条件或结构进行再生处理或小型化处理，以重复应用于芯棒式无缝管轧机轧制，从而使芯棒的寿命延长并提高其成本性能。

公开(公告)号：US07308812B2

公开(公告)日：2007-12-18

申请号：US11639227

申请日：2006-12-15

Applicant: Sumio Iida ,  Tetsuya Nakanishi

Inventor： Sumio Iida ,  Tetsuya Nakanishi

IPC: B21B45/02

CPC classification number: B21B17/04 ,  B21B17/02 ,  B21B19/04 ,  B21B25/04 ,  B21B45/04

Abstract: A process for producing a seamless steel pipe, in which the occurrence of inner surface flaws in the pipe can be reduced through the lowering of the friction coefficient during the elongation rolling by means of a mandrel mill is provided. The reduction of inner surface flaws is accomplished through the use of a lubricant composed mainly of either or both of graphite and mica coated to the surface of a mandrel bar, and another lubricant composed mainly of an alkali metal borate that is applied onto the inner surface of the hollow stock pipe. The temperature of the pipe prior to receiving the lubricant, during lubricant application, and prior to elongation rolling is controlled. The time between descaling or piercing and lubricant application and between lubricant application and elongation rolling is also controlled.

Abstract translation: 提供一种无缝钢管的制造方法，其中通过芯棒式无缝管轧机在伸长轧制过程中通过降低摩擦系数可以减少管内部缺陷的发生。 内表面缺陷的减少是通过使用主要由涂覆在芯棒表面上的石墨和云母中的一种或两种的润滑剂以及主要由碱金属硼酸盐组成的另一种润滑剂来实现的，该润滑剂被施加到内表面 的空心管道。 接受润滑剂之前，在润滑剂施加期间和在伸长轧制之前的管道的温度被控制。 还控制了除锈或刺穿与润滑剂施加之间以及润滑剂施加和伸长轧制之间的时间。