公开(公告)号：JP2012214877A

公开(公告)日：2012-11-08

申请号：JP2012047348

申请日：2012-03-02

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： ITO TOMOHIKO ,  IIZUKA YUKINORI

IPC: C21B7/24 ,  C21B5/00 ,  G01N27/72

Abstract: PROBLEM TO BE SOLVED: To provide a coil for measurement of the inside of a blast furnace that has durability and can be manufactured at low cost in use in the blast furnace, and to provide a technique for measuring a mixing degree of a charged raw material using the same.SOLUTION: The coil 30 for measurement disposed in the blast furnace 10 includes: a bobbin 32 configured by a refractory whose center is hollow; a metal wire 34 with heat resistant coating that is wound outside the bobbin 32; a heat resistant resin 36 for fixing the metal wire 34 to the bobbin 32; and an insulation material cover 38 covering an outer peripheral surface of the coil. The coil is used to measure a mixture ratio of cokes and sintered ore in the charged raw material.

Abstract translation: 要解决的问题：提供一种用于测量具有耐久性并且可以在高炉中使用的低成本制造的高炉内部的线圈，并且提供一种用于测量高炉的混合度的技术 充电原料使用相同。 解决方案：设置在高炉10中的用于测量的线圈30包括：由中心为中空的耐火材料构成的线轴32; 金属线34，其具有缠绕在线轴32外的耐热涂层; 用于将金属丝34固定到线轴32的耐热树脂36; 以及覆盖线圈的外周面的绝缘材料覆盖物38。 线圈用于测量带电原料中焦炭和烧结矿的混合比例。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012121067A

公开(公告)日：2012-06-28

申请号：JP2011106934

申请日：2011-05-12

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： OKABE YOSHITOMO ,  KODAMA TOSHIBUMI ,  IIZUKA YUKINORI ,  HORI HIROMICHI ,  IWASAKI KENICHI ,  KOIDE TATSUO ,  YOKOYAMA HIROYASU ,  ARAYA MASATOSHI ,  TOYODA SHUNSUKE

IPC: B23K13/08 ,  B21C37/08 ,  B23K13/00

Abstract: PROBLEM TO BE SOLVED: To provide a method and system for detecting defective welding by which a welded product with no welded parts showing deterioration in mechanical characteristics can be obtained.SOLUTION: The method includes: a spark detection step of imaging, assuming the welded parts in welding as objects, the light emitting state of the objects by a spark sensor 12 to detect sparks from the captured images; a brightness monitoring step of monitoring the brightness of the welded parts by capturing the brightness with a DS sensor 10 as image signals; and a defective welding determination step of determining whether there is a defective welding based on the detection result from the spark detection step and the monitoring result from the monitoring step.

Abstract translation: 要解决的问题：提供一种用于检测缺陷焊接的方法和系统，通过该方法和系统，可以获得没有显示机械特性劣化的焊接部件的焊接产品。 该方法包括：火花检测步骤，其将作为物体的焊接中的焊接部件进行成像，利用火花传感器12对物体的发光状态进行摄像，以检测拍摄图像的火花; 亮度监视步骤，通过用DS传感器10拍摄亮度作为图像信号来监视焊接部分的亮度; 以及基于来自火花检测步骤的检测结果和来自监视步骤的监视结果确定是否存在有缺陷的焊接的有缺陷的焊接确定步骤。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2013111631A

公开(公告)日：2013-06-10

申请号：JP2011261606

申请日：2011-11-30

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： TSUTSUMI KOICHI ,  ONO HIROYUKI ,  SHIMAMOTO HIROYUKI ,  MIKI YUJI ,  IIZUKA YUKINORI

IPC: B22D11/16 ,  B22D11/20

Abstract: PROBLEM TO BE SOLVED: To provide a method for detecting the solidification completion position of a slab in continuous casting using a water jet coupling method.SOLUTION: The method for detecting the solidification completion position includes: sending ultrasonic waves sent from an immersion probe 15 disposed between rolls of slab support rolls 7 of a continuous casting machine 1 to a slab 11 during casting by way of a water column formed between the immersion probe and the surface of the slab; receiving the ultrasonic waves reflected on the surface of the slab by the immersion probe by way of the water column; and measuring the distance between the immersion probe 15 and the surface of the slab based on the period of time from the sending to the receiving of the ultrasonic waves, wherein when there is a term during which the absolute value of a changing rate with time of the measured distance satisfies ≥30 mm/s, it is determined that there is a non-solidified layer 13 in the inside of the slab at a portion where the distance is measured by the immersion probe.

Abstract translation: 要解决的问题：提供一种使用水射流耦合方法在连续铸造中检测板坯的凝固完成位置的方法。 解决方案：用于检测凝固完成位置的方法包括：在铸造期间，将通过设置在连续铸造机1的板坯支撑辊7的辊之间的浸没式探针15发送的超声波送到板坯11， 浸入式探针与板坯表面之间形成; 通过浸渍探头通过水柱接收在板坯表面上反射的超声波; 并且基于从发送到接收超声波的时间段来测量浸没式探头15与平板的表面之间的距离，其中当存在这样的术语：其中变化率随时间的绝对值 所测量的距离满足≥30mm/ s，判定在通过浸液探针测量距离的部分，在板坯内部存在非固化层13。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013011526A

公开(公告)日：2013-01-17

申请号：JP2011144720

申请日：2011-06-29

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： IIZUKA YUKINORI ,  KUSUMOTO YOSHIHARU ,  TOMURA YASUO ,  KOMATSU KOICHI ,  ARAYA MAKOTO

IPC: G01N29/04 ,  G01N29/44

Abstract: PROBLEM TO BE SOLVED: To highly accurately detect a flaw in a steel product.SOLUTION: A transmitting/receiving section 3 transmits an ultrasonic pulse signal while scanning an ultrasonic probe 2 and receives a flaw detection signal caused by the ultrasonic pulse signal. A storage section 5 stores flaw detection signals for a plurality of pulses received by the transmitting/receiving section 3. A subtraction signal acquiring section 7a takes out a flaw detection signal predetermined pulses before a flaw detection signal subject to processing from the stored flaw detection signals, as a subtraction signal. A subtraction processing section 7b subtracts the subtraction signal from the flaw detection signal subject to the processing. Echo noise can be thus removed therefrom to provide a flaw echo signal with a high S/N ratio and with reduced noise, so that the flaw in a steel product can be highly accurately detected.

Abstract translation: 要解决的问题：高精度地检测钢产品的缺陷。 解决方案：发送/接收部分3在扫描超声波探头2的同时发送超声脉冲信号并接收由超声波脉冲信号引起的探伤信号。 存储部分5存储由发送/接收部分3接收的多个脉冲的探伤信号。减法信号获取部分7a从存储的缺陷检测信号中取出经过处理的缺陷检测信号之前的预定脉冲的探伤信号 ，作为减法信号。 减法处理部分7b从经过处理的探伤信号中减去减法信号。 因此可以从其中去除回波噪声，以提供具有高S / N比且具有降低的噪声的缺陷回波信号，从而可以高精度地检测钢产品中的缺陷。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013002961A

公开(公告)日：2013-01-07

申请号：JP2011134406

申请日：2011-06-16

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： OZEKI TAKAFUMI ,  IIZUKA YUKINORI

IPC: G01N29/04 ,  G01N29/24 ,  G01N29/26

Abstract: PROBLEM TO BE SOLVED: To achieve flaw detection over the whole circumference with simple and inexpensive device constitution including a small number of vibrators and to achieve easy maintenance.SOLUTION: For internal defect detection of round-bar steel 30 through water immersion ultrasonic flaw detection, an array probe 1 is used which has a plurality of excitation elements arrayed on a probe surface having a substantially circumferential probe surface facing the round-bar steel and having its center at the center axis of the round-bar steel, and is arranged so that the probe surface and a surface of the round-bar steel are at a predetermined water distance. The array probe and round-bar steel are changed in relative position in round-bar steel length directions while flaw detection of an internal defect is carried out by forming a converged ultrasonic beam by transmitting an ultrasonic wave from the array probe into the round-bar steel and receiving it, and flaw detection results are saved by round-bar steel length directions. Flaw detection in the round-bar steel length directions are carried out a plurality of times while the array probe and round-bar steel are changed in relative position in a circumferential direction so that the converged ultrasonic beam is formed in the round-bar steel at different positions.

Abstract translation: 要解决的问题：通过包括少量振动器的简单且便宜的装置构造来实现整个圆周上的探伤，并且实现容易的维护。 解决方案：对于通过浸水超声波探伤的圆棒钢30的内部缺陷检测，使用阵列探针1，其具有排列在探针表面上的多个激励元件，所述激发元件具有面向圆周方向的基本周向的探针表面， 并且其中心在圆棒钢的中心轴线处，并且被布置成使得探针表面和圆棒钢的表面处于预定的水距离。 阵列探针和圆棒钢在圆棒钢长度方向上的相对位置发生变化，同时通过将超声波从阵列探针发射到圆棒中而形成会聚的超声波束来进行内部缺陷的探伤 钢和接收它，并通过圆棒钢长度方向节省了缺陷检测结果。 在圆棒钢长度方向上的裂纹检测进行多次，同时阵列探针和圆棒钢在圆周方向上相对位置变化，使得会聚的超声波束形成在圆棒钢中 不同的位置 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012188729A

公开(公告)日：2012-10-04

申请号：JP2011106941

申请日：2011-05-12

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： ARAYA MASATOSHI ,  KAWABATA YOSHIKAZU ,  OKABE YOSHITOMO ,  IIZUKA YUKINORI ,  HORI HIROMICHI ,  GUNJI MAKIO ,  IWASAKI KENICHI

IPC: C22C38/00 ,  B21C37/08 ,  B21C51/00 ,  B23K13/00 ,  B23K31/00 ,  C21D8/10 ,  C21D9/08 ,  C21D9/28 ,  C21D9/50 ,  C22C38/06 ,  C22C38/58 ,  F16C3/02 ,  G01N29/04

CPC classification number: F16L9/02 ,  B23K9/00 ,  B23K11/0873 ,  C21D9/08 ,  C21D9/50 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14

Abstract: PROBLEM TO BE SOLVED: To provide a process for producing an electric-resistance-welded steel pipe, garanteeing a fatigue resistant characteristic needed as a driving shaft and being excellent in torsion fatigue resistant characteristic.SOLUTION: In the electric-resistance-welded steel pipe having as the composition of a basic material part composed of 0.25-0.55% C, 0.01-1.0% Si, 0.2-3.0% Mn, ≤0.1% Al, 0.0010-0.0100% N and the balance Fe with inevitable impurities, the electric-resistance-welded steel pipe excellent in the torsion fatigue resistant characteristic is characterized in that the area of weld defects which is the area of weld defects projected on the weld formed by electric-resistance welding is less than 40,000 μm.

Abstract translation: 要解决的问题：提供一种用于制造电阻焊钢管的方法，保证作为驱动轴所需的耐疲劳特性并且抗扭转疲劳特性优异。 解决方案：在作为基本材料部分的组成的电阻焊钢管中，由0.25-0.55％C，0.01-1.0％Si，0.2-3.0％Mn，≤0.1％Al，0.0010- 0.0100％N，余量为Fe与不可避免的杂质，耐扭曲疲劳特性优异的电阻焊钢管的特征在于，焊接缺陷面积是由电 - 电阻焊接小于40,000μm 2 。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012177685A

公开(公告)日：2012-09-13

申请号：JP2012017895

申请日：2012-01-31

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： IIZUKA YUKINORI ,  OZEKI TAKAFUMI ,  MATSUI MINORU

IPC: G01N29/04

CPC classification number: G01N29/043 ,  G01N29/041 ,  G01N29/07 ,  G01N29/11 ,  G01N29/265 ,  G01N29/4427 ,  G01N2291/0234 ,  G01N2291/0289 ,  G01N2291/2634 ,  Y10T29/49764

Abstract: PROBLEM TO BE SOLVED: To provide an ultrasonic flaw detection method, an ultrasonic flaw detection device, and a pipe material manufacturing method capable of detecting even a recessed defect generated on the inner surface of a pipe material of metal such as a steel pipe, and a wrap-shaped shallow defect.SOLUTION: An ultrasonic flaw detection device includes: a waveform memory 11 which acquires and holds waveform data on an echo signal when an ultrasonic probe 2 which generates an ultrasonic signal toward the inner surface B of a steel pipe 1 and the steel pipe 1 are relatively moved; a signal analysis part 12 which calculates distance until the echo signal from the inner surface B is received and rate of change of the distance based on the held waveform data; and a defect detection part 13 which detects a defect BW on the inner surface B based on the distance and the rate of change of the distance.

Abstract translation: 要解决的问题：提供一种超声波探伤方法，超声波探伤装置和能够检测在诸如钢之类的金属管材的内表面上产生的凹陷缺陷的管材制造方法 管道和包裹形的浅缺陷。 解决方案：超声波探伤装置包括：波形存储器11，其在朝向钢管1的内表面B产生超声波信号的超声波探头2和钢管时获取并保持回波信号的波形数据 1相对移动; 信号分析部12，其计算直到来自内表面B的回波信号为止的距离，以及基于所保持的波形数据的距离的变化率; 以及基于距离和距离变化率来检测内表面B上的缺陷BW的缺陷检测部13。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012093307A

公开(公告)日：2012-05-17

申请号：JP2010242455

申请日：2010-10-28

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社 ,  Toyota Auto Body Co Ltd ,  トヨタ車体株式会社

Inventor： OZEKI TAKAFUMI ,  IIZUKA YUKINORI ,  KATO SHINYA ,  TSUJI KOSUKE

IPC: G01N29/04 ,  B23K11/24 ,  B23K31/00 ,  G01N29/00

Abstract: PROBLEM TO BE SOLVED: To correctly inspect quality of a spot weld part without being affected by a heat affected part.SOLUTION: An ultrasonic probe 10 transmits ultrasonic signals propagated through an upper plate 2 from multiple wave sending positions on the upper plate 2 which is a plate outside of a spot weld part 4. An ultrasonic probe 20 receives the ultrasonic signals at least whose propagation path includes the spot weld part at multiple wave receiving positions on the upper plate 2. And, an arithmetic unit 34 calculates propagation time of the ultrasonic signals received by the ultrasonic probe 20 and determines the quality of the spot weld part 4 based on the calculated propagation time.

Abstract translation: 要解决的问题：正确检查点焊部件的质量，不受热影响部件的影响。 解决方案：超声波探头10将超声波信号通过上板2从位于点焊部4的外侧的上板2上的多个送波位置传播。超声波探头20至少接收超声波信号 其传播路径包括在上板2上的多个波接收位置处的点焊部分。并且，运算单元34计算由超声波探头20接收的超声波信号的传播时间，并基于以下步骤确定点焊部分4的质量 计算出的传播时间。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011257384A

公开(公告)日：2011-12-22

申请号：JP2011102435

申请日：2011-04-28

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： MATSUI MINORU ,  IIZUKA YUKINORI ,  TAKADA HAJIME ,  OZEKI TAKAFUMI

IPC: G01N29/04

CPC classification number: G01B5/0037 ,  G01B17/06 ,  G01N29/043 ,  G01N29/265 ,  G01N2291/267 ,  G06T7/0004 ,  G06T2207/10132 ,  G06T2207/30152

Abstract: PROBLEM TO BE SOLVED: To image a structure shape in a welded part quickly and accurately (clearly) by a nondestructive testing.SOLUTION: In imaging a structure shape in a welded part for the purpose of inspecting a structure in the welded part 2 where, while scanning a cross-section orthogonal to a welding direction of an inspection target S by an ultrasonic beam B, a reflection signal from inside the inspection target is received and the scanned cross-section is imaged according to the received reflection signal, a low frequency component of the received signal is removed by subtracting a moving average point number m from a moving average waveform Ra, thereby the reflection signal from the structure in the welded part is extracted and only the extracted reflection signal is amplified. Cross-sections orthogonal to the welding direction are scanned at plural different positions along the welding direction of the inspection target by a converged ultrasonic beam, and the scanned cross-sections are imaged according to the ultrasonic received signals obtained. The plural images obtained by scanning at the plural positions along the welding direction are overlapped, and by holding the largest value among overlapped pixels, a reflection wave from the structure in the welded part is emphasized.

Abstract translation: 要解决的问题：通过非破坏性测试快速，准确（清晰地）对焊接部件的结构形状进行成像。 解决方案：为了检查焊接部分2中的结构的目的，为了对焊接部件中的结构形状进行成像，其中，在通过超声波束B扫描与检查对象物S的焊接方向正交的截面的同时， 接收到来自检查对象内部的反射信号，根据接收到的反射信号对被扫描的横截面进行成像，通过从移动平均波形Ra中减去移动平均点数m来消除接收信号的低频分量， 从而提取来自焊接部分中的结构的反射信号，并仅提取反射信号。 与焊接方向正交的横截面通过会聚的超声波束沿着检查对象的焊接方向在多个不同的位置进行扫描，并且根据获得的超声波接收信号对扫描的横截面成像。 通过沿着焊接方向的多个位置扫描而获得的多个图像重叠，并且通过在重叠像素中保持最大值，强调来自焊接部分中的结构的反射波。 版权所有（C）2012，JPO＆INPIT