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    • 1. 发明专利
    • Method for manufacturing bar steel
    • 钢铁制造方法
    • JP2011246789A
    • 2011-12-08
    • JP2010123468
    • 2010-05-28
    • Kobe Steel Ltd株式会社神戸製鋼所
    • OTOMO RYOSUKETAKEDA MIKAKOONISHI TAKASHITAHIRA TOMOHIDEKUBOTA YOSHIHIKO
    • C21D9/00B21B1/02C22C38/00C22C38/38C22C38/60
    • PROBLEM TO BE SOLVED: To provide a useful method for manufacturing a bar steel, restraining decarburization on the surface and also having excellent scale peel properties.SOLUTION: In the method for manufacturing the bar steel in which a chemical component composition is suitably adjusted, before applying hot rolling, the surface and inside of a billet is heated at 800 to 900°C by maintaining the billet in a heating furnace, and then, the inside of the heating furnace is adjusted to a nitrogen atmosphere in which a steam concentration Y satisfies the following formula (1) and an oxygen concentration becomes 5.0 vol.% or less, and a rapid heating is performed to the extracting temperature of 925 to 1,150°C from the heating furnace at the rising temperature speed of 3°C/s or more. The formula (1): Y(vol.%)>11.0×ln(3.0×[Cr]), wherein Y indicates the steam concentration in a furnace atmosphere, and [Cr] indicates the Cr content (mass%) contained in the bar steel.
    • 要解决的问题:提供制造棒钢的有用方法,抑制表面脱碳,还具有优异的鳞片剥离性能。 解决方案:在适当调节化学成分组成的棒钢的制造方法中,在进行热轧之前,通过将坯料保持在加热状态,将坯料的表面和内部加热至800〜900℃ 炉,然后将加热炉的内部调整为蒸汽浓度Y满足下式(1),氧浓度为5.0体积%以下的氮气氛,并对 以3℃/ s以上的升温速度从加热炉中提取925〜1150℃的温度。 式(1):Y(体积%)> 11.0×ln(3.0×[Cr]),其中Y表示炉气中的蒸汽浓度,[Cr]表示包含在 钢筋。 版权所有(C)2012,JPO&INPIT
    • 2. 发明专利
    • Method of detecting widening of rolled stock in bar steel hot-rolling equipment
    • 检测钢棒热轧设备中卷取物的加固方法
    • JP2011194455A
    • 2011-10-06
    • JP2010066217
    • 2010-03-23
    • Kobe Steel Ltd株式会社神戸製鋼所
    • ISHIDA TAKESHIMORIMOTO SADAOKUBOTA YOSHIHIKOTAHIRA TOMOHIDEDOI KIYOYOSHI
    • B21B39/08B21C51/00
    • PROBLEM TO BE SOLVED: To provide a method of detecting the widening of a rolled stock in bar steel hot-rolling equipment, by which the widening of the rolled stock caused by separation of the rolled stock, which travels between rolling mills, from the kicker roller of a side looper device for a very short period of time in the bar steel hot-rolling equipment which includes the side looper devices between the rolling mills of a rolling mill train.SOLUTION: By continuously measuring the changing speed of loop height of a rolled stock loop between the rolling mills and detecting that the measured changing speed of the loop height exceeds the largest moving acceleration at which the kicker roller is movable, the occurrence of the widening of the rolled stock caused by the separation of the rolled stock from the kicker roller for a very short period of time is detected.
    • 要解决的问题:提供一种在棒钢热轧设备中检测轧制坯料的加宽方法,通过该轧制坯料在轧机之间行进的轧制坯料的分离引起的轧制坯料的加宽, 在钢筋热轧设备中,包括在轧机列车的轧机之间的侧弯器装置,在较短时间内的侧弯器装置的辊子。解决方案:通过连续地测量轧机高度的变化速度 在轧机之间轧制坯料回路,并且检测到所测量的环高度的变化速度超过推进辊可移动的最大移动加速度,由轧制坯料与轧制材料的分离引起的轧制坯料变宽的发生 检测到非常短的时间的推进辊。
    • 3. 发明专利
    • 噛み出し検出方法、噛み出し検出装置、及び条鋼圧延材の圧延方法
    • 推测检测方法,推测检测装置和滚子棒材料的方法
    • JP2014228383A
    • 2014-12-08
    • JP2013107995
    • 2013-05-22
    • 株式会社神戸製鋼所Kobe Steel Ltd
    • TAKI YASUHISAKAKIMOTO HIDEKIMUROYA YUKIKUBOTA YOSHIHIKOKAMEZAKI MASAMI
    • G01B11/24G01N21/952
    • 【課題】圧延機で条鋼を製造するに際して、精度よく且つ定常的に圧延材の噛み出しを検出して、圧延材の表面品質の良否を確実に判定することができる噛み出し検出方法、及び噛み出し検出装置を提供する。【解決手段】本発明の噛み出し検出方法は、凹状の孔型9と孔型9の両端より突出したフランジ部8とを有する孔型圧延ロール7が配備されている圧延機6を有した圧延設備1において条鋼圧延材Wの噛み出しを検出する噛み出し検出方法であって、圧延機6出側から条鋼圧延材Wが送り出された際に孔型圧延ロール7の孔型9からフランジ部8に亘る部分に対応する条鋼圧延材Wの端部形状を測定し、その条鋼圧延材Wの端部形状を最小2乗法を用いてf(x)=ax3+bx2+cx+dで近似し、その結果をf”(x)=6ax+2bに適用させて2回微分値を導出し、2回微分値において正負反転する場所が存在する場合、条鋼圧延材Wが噛み出していると判定する。【選択図】図2
    • 要解决的问题:为了提供一种突出检测方法和突起检测装置,其能够以高精度和稳定性检测轧制材料的突起,可靠地确定轧制材料的表面质量是否令人满意,在制造棒钢 突起检测方法使用具有辊6的轧制设备1,辊6设置有具有凹槽9的槽轧辊7和从槽9的两端突出的凸缘部8,以检测突起,轧制钢筋材料 当轧制棒钢材W从辊6的输出侧送出时,轧制棒钢材W的端部形状对应于从槽轧辊7的槽9延伸到凸缘的部分 测量部件8,并且使用根据f(x)= ax + bx + cx + d的最小二乘法的方法近似轧制钢筋材W的端部形状。 将结果值应用于f“(x)= 6ax + 2b以导出双重差分值,如果双重差分值中的任何符号反转,则确定轧制的钢材W突出。
    • 5. 发明专利
    • Eddy current flaw detector and bar steel rolling line with eddy current flaw detector
    • EDDY电流检波器和带有EDDY电流检波器的钢丝滚子线
    • JP2012208064A
    • 2012-10-25
    • JP2011075254
    • 2011-03-30
    • Kobe Steel Ltd株式会社神戸製鋼所
    • KINOSHITA DAISUKEKUBOTA YOSHIHIKOHAGIWARA TAKASHI
    • G01N27/90B21C51/00
    • PROBLEM TO BE SOLVED: To shorten centering operation time and to also easily make a lift off amount proper.SOLUTION: In an eddy current flaw detector 11, bar steel 2 rolled by rolling machines 9 passes through the center part of a cross section, and the eddy current flaw detector 11 includes a flaw detection coil 22 which makes the passing bar steel 2 form eddy current by applied current to perform flaw detection, the flaw detection coil 22 is installed in a recombination carriage 12 on the exit sides of the rolling machines 9 and on which the rolling machines 9 are loaded. The flaw detection coil 22 is installed on the exit side of the rolling machine 9 on the downstream side most among the rolling machines 9 loaded on the recombination carriage 12.
    • 要解决的问题:缩短定心操作时间,并且还可以很容易地实现脱离量。 解决方案:在涡流探伤器11中,轧制机9轧制的钢筋2穿过横截面的中心部分,涡流探伤仪11包括一个探伤线圈22,该探伤线圈使得通过的杆钢 2通过施加的电流形成涡流以进行探伤,探伤线圈22安装在轧制机9的出口侧的复合滑架12中,并在其上装载滚压机9。 瑕疵检测线圈22安装在装载在重组滑架12上的轧制机9的下游侧的轧制机9的出口侧。(C)2013,JPO&INPIT
    • 6. 发明专利
    • Method of rolling bar steel
    • 轧钢棒的方法
    • JP2011230130A
    • 2011-11-17
    • JP2010100217
    • 2010-04-23
    • Kobe Steel Ltd株式会社神戸製鋼所
    • KUSHIDA HITOSHIHAGIWARA TAKASHITAHIRA TOMOHIDEKUBOTA YOSHIHIKO
    • B21B1/16B21B27/02
    • PROBLEM TO BE SOLVED: To provide a bar steel-rolling method capable of reducing surface flaws without reducing productivity.SOLUTION: In the method of rolling a bar steel while successively reducing a cross-sectional area using a plurality of rolling machines, a rolling stock is formed in a square shape in which each sectional corner part has a curved surface. The following caliber by which the formed rolling stock is rolled has a flat fillet, and a screw-down portion which comprises a curved surface and reduces each corner part of the rolling stock is present between the fillet and a flange. The above following caliber is formed so as to satisfy R>r when the curvature radius in the corner curved surface of the rolling stock is defined as r, and that in the curved surface of the screw-down portion as R. The rolling stock is introduced into the entry side of the following caliber, and the corner part of the rolling stock is reduced from an opposite side direction by the screw-down portion. The rolling stock reduced by the screw-down portion is rolled in a sectional round or square shape by further following caliber.
    • 要解决的问题:提供一种能够在不降低生产率的情况下减少表面缺陷的钢棒轧制方法。 解决方案:在使用多台轧制机连续减小横截面面积的条钢的轧制方法中,将各车削坯料形成为每个截面角部具有曲面的正方形。 轧制成形的轧制车辆的以下口径具有扁平的圆角,并且在圆角和凸缘之间存在包括弯曲表面并减小机车车辆的每个拐角部分的拧紧部分。 上述以下口径形成为当车辆的转弯曲面中的曲率半径被定义为r,并且在下降部分的曲面中的曲率半径为R时满足R> r。机车车辆是 引入下一个口径的进入侧,并且通过拧紧部分从相对侧方向减少了车辆的角部。 通过拧紧部分减少的轧制坯料通过进一步的机芯以分段圆形或正方形轧制。 版权所有(C)2012,JPO&INPIT
    • 7. 发明专利
    • Method for rolling bar steel and wire rod, and rolling roll of rolling mill for bar steel and wire rod
    • 钢筋和钢丝绳滚压方法及轧制轧辊用钢棒和钢丝绳
    • JP2011041965A
    • 2011-03-03
    • JP2009192214
    • 2009-08-21
    • Kobe Steel Ltd株式会社神戸製鋼所
    • KAKIMOTO HIDEKIKUSHIDA HITOSHITAHIRA TOMOHIDEKUBOTA YOSHIHIKOMIYAZAKI SHOJI
    • B21B1/16B21B27/02
    • PROBLEM TO BE SOLVED: To simply conduct rolling of a steel material while suppressing generation of a surface flaw on the surface of the steel material, when forming a steel material having an angular crosssection into one having a round crosssection. SOLUTION: There is provided a method for rolling bar steel and wire rods in which bar steel and wire rods are manufactured by forming a steel material 3 having an angular crosssection into one having a round crosssection, employing a rolling mill for bar steel and wire rods. In the method, when rolling and deforming the steel material 3 having an angular cross section to make the steel material 3 having an angular crosssection a steel material having a round crosssection, the deformation is conducted in such a way that a plane portion 12 of the steel material 3 having an angular crosssection is firstly reduced, and in such a way that each of the upper and lower faces of the steel material 3 having an angular crosssection is reduced. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了简单地进行钢材的轧制,同时抑制钢材表面的表面缺陷的产生,当将具有角度横截面的钢材形成为具有圆形横截面的钢材时。 解决方案:提供了一种轧制棒钢和线材的方法,其中通过将具有角度横截面的钢材3形成为具有圆形横截面的钢材3制造棒钢和线材,使用用于钢筋的轧机 和线棒。 在该方法中,当使具有角度横截面的钢材3进行轧制和变形以使具有横截面的钢材的具有角度横截面的钢材3时,以这样的方式进行变形,使得: 首先减少具有角度横截面的钢材3,并且以这样的方式减小了具有角度横截面的钢材3的上表面和下表面。 版权所有(C)2011,JPO&INPIT
    • 8. 发明专利
    • 圧延材の表面疵解析方法及び圧延材の製造方法
    • 轧制材料的表面花瓣分析方法及制造轧制材料的方法
    • JP2014223645A
    • 2014-12-04
    • JP2013103995
    • 2013-05-16
    • 株式会社神戸製鋼所Kobe Steel Ltd
    • TAKI YASUHISAKAKIMOTO HIDEKIMUROYA YUKIKUBOTA YOSHIHIKOKAMEZAKI MASAMI
    • B21C51/00
    • 【課題】実際の圧延工程において生じる複雑な形状を有する圧延材の表面疵の発生状況及び/又は進展状況を、短い計算時間で解析することができる圧延材の表面疵解析方法を提供する。【解決手段】本発明の圧延材の表面疵解析方法は、圧延工程にて圧延材Wの表面に発生する表面疵Zを解析する圧延材Wの表面疵解析方法において、圧延材Wの変形をシミュレーション可能なグローバルモデル10を構築すると共に、当該グローバルモデル10を用いて圧延材Wの変形量ならびに表面疵Zの発生状況を算出し、その表面疵Zに対応する部分の分割メッシュをグローバルモデル10の分割メッシュより細分化したサブモデル11を構築し、サブモデル11に対してグローバルモデル10より算出された圧延材Wの変形量を強制変位として付与すると共に、当該サブモデル11を用いたシミュレーションを進めることで圧延材Wの表面疵Zの発生状況及び/又は進展状況を解析する。【選択図】図1
    • 要解决的问题:为了提供能够分析在实际轧制过程中产生的具有复杂形状的轧制材料的表面缺陷的发生状态和/或进展状态的轧制材料的表面缺陷分析方法,在短时间内 计算时间。解决方案:本发明的轧制材料的表面缺陷分析方法是轧制材料W的表面缺陷分析方法,用于分析在轧制过程中在轧制材料W的表面上产生的表面缺陷Z,以及 构建能够模拟轧制材料W的变形的全局模型10,通过使用全局模型10计算轧制材料W的变形量和表面缺陷Z的出现状态,构建将部分 从全局模型10的分割网格对应于其表面缺陷Z的分割网格将从全局模型10计算出的轧制材料W的变形量赋予为 b型11作为强制位移,并且通过使用子模型11的前进进行模拟来分析轧制材料W的表面缺陷Z的发生状态和/或进度状态。
    • 9. 发明专利
    • Method of manufacturing bar steel product
    • 制造钢铁产品的方法
    • JP2014024179A
    • 2014-02-06
    • JP2012168602
    • 2012-07-30
    • Kobe Steel Ltd株式会社神戸製鋼所
    • TAKI YASUHISAMUROYA YUKIKUBOTA YOSHIHIKOTAHIRA TOMOHIDE
    • B23D33/02B21J5/06B21J5/08B23D23/00
    • PROBLEM TO BE SOLVED: To provide a method of manufacturing a bar steel product, configured to prevent occurrence of end surface cracks after cutting without lowering a product value or productivity of the bar steel product, in the bar steel product manufacturing method for manufacturing the bar steel by cutting a rolled material with cold shear after cooling the rolled material subjected to hot rolling or direct rolling.SOLUTION: A method of manufacturing a bar steel product 10 is provided for manufacturing a bar steel by cutting a rolled material 1 with cold shear 5 after cooling the rolled material subjected to hot rolling or direct rolling. In the cold shear 5, while applying a compressive force to both ends equivalent of the bar steel before or after the cutting with a holding die for holding the rolled material 1, the rolled material 1 is cut to make the bar steel product 10.
    • 要解决的问题:提供一种制造棒钢制品的方法,所述条形钢制品在制造棒材的钢筋制品制造方法中,在不降低产品价值或生产率的条件下,防止在切割后发生端面裂纹 钢冷却后经过热轧或直接轧制的轧制材料进行冷剪切后切割轧制材料。制造棒钢产品10的方法,用于通过用冷剪切5切割轧制材料1来制造棒钢 冷却后进行热轧或直接轧制的轧制材料。 在冷剪切5中,当用用于保持轧制材料1的保持模具在切割之前或之后施加相当于钢筋的两端的压缩力时,切割轧制材料1以制造钢筋产品10。
    • 10. 发明专利
    • Method for manufacturing bar steel
    • 钢铁制造方法
    • JP2013007105A
    • 2013-01-10
    • JP2011141207
    • 2011-06-24
    • Kobe Steel Ltd株式会社神戸製鋼所
    • TAKEDA MIKAKONAKAKUBO SHOHEIDOI KIYOYOSHIKUBOTA YOSHIHIKO
    • C21D9/00B21B3/00C22C38/00C22C38/34C22C38/44
    • PROBLEM TO BE SOLVED: To provide a useful method for manufacturing a bar steel restraining surface decarburization by restraining scale cracking and peeling in a steel heating stage.SOLUTION: The method for manufacturing the bar steel by heating steel in a furnace and then hot-rolling the steel is carried out by setting the temperature rise rate and atmosphere of the furnace as follows according to the surface temperature of the steel and setting an extraction temperature from the furnace to 1,200°C or lower: (1) up to 600°C: the temperature rise rate of at least 20°C/min; and (2) 600°C or higher: the furnace internal atmosphere with an oxygen concentration of 3.0 vol.% or more and 10.0 vol.% or less, and the temperature rise rate of 5°C/min or more and less than 20°C/min.
    • 要解决的问题:提供一种通过在钢加热阶段中抑制锈蚀开裂和剥离来制造钢筋抑制表面脱碳的有用方法。 解决方案:通过在炉中加热钢,然后对钢进行热轧制造棒钢的方法是通过根据钢的表面温度设定炉的升温速度和气氛如下进行的, 将炉子的提取温度设定为1200℃以下:(1)600℃以下:升温速度至少为20℃/分钟; 和(2)600℃以上:氧浓度为3.0体积%以上且10.0体积%以下的炉内气氛,升温速度为5℃/分钟以上且小于20℃ °C / min。 版权所有(C)2013,JPO&INPIT