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1. 发明专利

JP2002126885A MONITORING METHOD FOR LASER WELDING QUALITY AND MONITORING METHOD THEREFOR 失效
公开(公告)号：JP2002126885A
公开(公告)日：2002-05-08
申请号：JP2000326617
申请日：2000-10-26
申请人： NIPPON STEEL CORP , TOYOTA MOTOR CORP
发明人： MAEDA TAKESHI , ICHIYAMA YASUTOMO , TANAKA TAKASHI , OBARA MASAHIRO , TANAKA YOSHITADA , NOMURA KOJI , SHIGA TAKEFUMI
IPC分类号： B23K26/00 , B23K26/21 , B23K103/16
摘要： PROBLEM TO BE SOLVED: To provide a laser welding quality monitoring method and device capable of conducting with excellent accuracy the quality determination of a welded part in lap welding of a surface treatment steel material provided with a covered layer of a substance with a melting point lower than that of a base material. SOLUTION: In the laser welding quality monitoring method in a laser lap welding method in which at least one lapping face becomes the covered layer of the substance with the melting point lower than that of the base material, by using the fact that the low frequency component strength peak-a peak value SL(t) in 30 Hz or below of a key hole emission signal detected by a light sensor makes the relational expression |SL(t)|>Th1 established against a threshold Th1 previously set at the time of occurrence of welding anomaly in over lap gap, the anomaly caused by the lap gap fluctuation amount is detected with excellent accuracy.

2. 发明专利

JPS5819440A METHOD FOR IMPROVING WATT LOSS CHARACTERISTIC OF ELECTROMAGNETIC STEEL PIPE 失效
公开(公告)号：JPS5819440A
公开(公告)日：1983-02-04
申请号：JP11522381
申请日：1981-07-24
申请人： NIPPON STEEL CORP
发明人： INOUCHI TOORU , YAMAGUCHI SHIGEHIRO , NAKAMURA MOTOHARU , ISHIMOTO TADASHI , TANAKA YOSHITADA
IPC分类号： C21D8/12 , C21D9/46
摘要： PURPOSE:To improve core loss characteristics by disposing plural pieces of laser scanning units along the width direction of an electromagnetic steel plate of a prescribed width, scanning and irradiating the surfaces of the steel pipe for the prescribed width with the respective units in such a way that the irradiation does not overlap each other thereby giving irradiation traces on the surface of the steel pipe. CONSTITUTION:An electromagnetic steel plate of a width (W) is run in arrow directions R, D, and plural pieces (N) of laser scanning units 2 are disposed along the width direction of the steel plate. Laser beams are irradiated in the width direction of the steel plate with said units via reflection mirrors 3. The width (w) of each laser beam is determined by W/N in order to irradiate the lasers over the entire width of the steel plate of the width W at required speeds. If the respective reflection mirrors are moved back and forth at said width (W) and the laser beams are irradiated in synchronization with the oscillations, sinusoidal irradiation patterns are produced on the surface of the steel plate.

3. 发明专利

JPS6148528A Laser beam scanning and processing device 失效
标题翻译：激光束扫描和处理装置
公开(公告)号：JPS6148528A
公开(公告)日：1986-03-10
申请号：JP16890584
申请日：1984-08-14
申请人： Nippon Steel Corp , Yamada Kogaku Kogyo Kk
发明人： YAMADA MASAKAZU , EGASHIRA TAKEJI , IWASAKI MASARU , TANAKA YOSHITADA
IPC分类号： G02B26/10 , C21D8/12 , C21D9/46 , H01S3/00
摘要： PURPOSE: To decrease the number of laser scanners and to improve the efficiency, reliabiity, performance, etc., of a scanning system by subjecting the relation between the rotating angle of a rotary dividing mirror which divides a laser beam with time and the angle of oscillating mirrors for scanning to phase control, etc.
CONSTITUTION: The laser beam 18 is changed over time-dividedly to transmission and reflection by the rotary dividing mirror 3 of an optical path selecting part 2. The transmitted beam 19a is scanned by the oscillating mirror 7a and is scanned at a microspot 9a to the surface of a steel sheet 10 by a lens 8a. The reflected beam 19b is scanned at a spot 9b by the oscillating mirror 7b and a lens 8b. The rotating speed of the mirror 3 is controlled by a rotation control device 12 on the basis of the moving speed of the sheet 10. The rotating angle of the mirror 3 and the oscillating angle of the morrors 7a, 7b are controlled by phase control parts 13a, 13b so as to have the specific phase relation in accordance with the signal from a rotating angle detector 11. The signals of the parts 13a, 13b are controlled with amplitude by amplitude control parts 14a, 14b and further the amplitudes of the mirrors 7a, 7b are controlled as well.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了减少激光扫描器的数量，并通过使分割激光束的旋转分割镜的旋转角度与时间之间的关系与扫描系统的角度的关系来提高扫描系统的效率，可靠性，性能等用于扫描到相位控制的振动反射镜等。构成：激光束18被时间分割地改变为通过光路选择部分2的旋转分割镜3的透射和反射。透射光束19a被振荡镜并且通过透镜8a在微细管9a上扫描到钢板10的表面。反射光束19b通过振动反射镜7b和透镜8b在光点9b被扫描。反射镜3的旋转速度基于片材10的移动速度由旋转控制装置12控制。反射镜3的旋转角度和镜面7a，7b的摆动角度由相位控制部件 13a，13b，以便根据来自旋转角度检测器11的信号具有特定的相位关系。部件13a，13b的信号由幅度控制部分14a，14b的幅度控制，并且反射镜7a的幅度，7b也被控制。

4. 发明专利

JPS58181820A Method and apparatus for applying laser beam to running strip 失效
标题翻译：将激光束应用于运行条纹的方法和装置
公开(公告)号：JPS58181820A
公开(公告)日：1983-10-24
申请号：JP6169082
申请日：1982-04-15
申请人： Nippon Steel Corp
发明人： ODAWARA GENJI , TANAKA YOSHITADA
IPC分类号： C21D9/52 , C21D1/09 , C21D8/12
CPC分类号： C21D1/09
摘要： PURPOSE:To obtain a product of good quality, while inhibiting the flapping of a running strip and performing uniform laser beam irradiation, by applying the laser beams to the upper surface of the running strip supported with touch rolls. CONSTITUTION:Laser beams are applied to the crosswise direction of a running strip S from laser beam applicators 8-12 to contrive the improvement in the magnetic property, esp. an iron loss, of said strip esp. useful as an electromagnetic steel sheet. Hereon, the strip S is supported with touch rolls 3-7 provided below the strip S, and the upper surface of the strip S supported with the touch rolls 3-7 is irradiated with the laser beams. A cover means for intercepting laser beams is provided at the upper surface parts of the running strip S at both of its edges and at the upper surface parts of the touch rolls 3-7 at their ends, so that laser scars are not formed on the rolls 3-7 even if the strip S meanders.
摘要翻译：目的：为了获得质量好的产品，同时通过将激光束施加到支撑有触摸辊的行走条的上表面，同时抑制行驶条带的拍打并进行均匀的激光束照射。规定：激光束从激光束施加器8-12施加到运行条带S的横向上，以改善磁性能，特别是。铁的损失，特别是。用作电磁钢板。这里，条带S由设置在条带S下方的接触辊3-7支撑，并且用触摸辊3-7支撑的条S的上表面被激光束照射。在移动带S的两端部和接触辊3-7的上表面部分的上表面部分处设置有用于拦截激光束的盖装置，使得激光束在其上不形成卷3-7即使带S蜿蜒曲折。

5. 发明专利

JPS6167720A Method for annealing hot rolled plate of silicon steel 失效
标题翻译：用于退火硅钢热轧板的方法
公开(公告)号：JPS6167720A
公开(公告)日：1986-04-07
申请号：JP18740184
申请日：1984-09-07
申请人： Nippon Steel Corp
发明人： OGURI AKIRO , NAKAYAMA HISANOBU , TANAKA YOSHITADA , NAGASHIMA WATARU
IPC分类号： B24B9/00 , C21D8/12
CPC分类号： C21D8/1261 , C21D8/1277
摘要： PURPOSE:To prevent the occurrence of lug cracking, plate break and the like with cold rolling by annealing after both end surfaces of a width direction of a hot rolled plate of silicon steel are ground. CONSTITUTION:At annealing a hot rolled plate of silicon steel, both end surfaces of the width direction of the hot rolled plate are ground by a grinder, etc., or after trimming said plate is ground for annealing. The amount of grinding is approximately 25-500mu and the angle is vertical or within + or -10 deg. against the surface of the plate. After the temperature of annealing is held to be approxi mately 850-1,200 deg.C for 30-300sec, it is cooled at approximately 850-950 deg.C before quick cooling. Therefore, the crystallized particles on the surface of the plate after annealing the hot rolled plate become larger than any other part to reduce the occurrence of the lug cracking and the plate break substantial ly.
摘要翻译：目的：为了防止在硅钢的热轧板的宽度方向的两个端面之后通过退火进行冷轧而产生凸耳开裂，断板等。构成：在退火硅钢的热轧板时，通过研磨机等研磨热轧板的宽度方向的两个端面，或者在将该板研磨后进行退火处理。磨削量约为25-500mu，角度垂直或在+或-10度范围内。抵抗板的表面。退火温度保持在850〜1200℃约30〜300秒后，冷却至850-950℃左右。因此，热轧板退火后的板表面的结晶粒子比任何其他部分都变大，以减少突起开裂的发生和板破裂。

6. 发明专利

JPS57203720A TREATMENT OF ELECTROMAGNETIC STEEL PLATE 失效
公开(公告)号：JPS57203720A
公开(公告)日：1982-12-14
申请号：JP8716681
申请日：1981-06-06
申请人： NIPPON STEEL CORP
发明人： TANAKA YOSHITADA , IWASAKI MASARU , NAKAMURA MOTOHARU , HIROSE KIKUJI
IPC分类号： H01F1/18 , C21D8/12 , C21D9/46 , C23C22/00
摘要： PURPOSE:To manufacture an electromagnetic steel plate having a film which is satisfactory in its insulation resistance, corrosion resistance and space factor, by executing a laser irradiation treatment onto the surface of said steel plate, and after that, removing a spatter before its insulation film threatment. CONSTITUTION:A directional electromagnetic band steel 1 wound lik a coil has a glass film on its surface. In order to remove surplus MgO, etc. adhering onto the surface of this steel tape 1, the band steel 1 is made to pass through each process of pickling 2, brushing 3, high pressure spraying 4 and drying 5. Subsequently, tensile force is provided to the band steel 1 by executing a tensile force film treatment 6. To this tensile force film, drying 7, baking 8 and cooling 9 are executed, and after that, a laser irradiation treatment 10 is executed. After the irradiation, it is made to pass through a spatter removing device 11, the spatter is removed by brushing and spraying, and subsequently it is dried 12. Subsequently, in order to repair laser marks of the tensile force film, an insulation film treatment 13 is executed, and the band steel is wound to a coil after baking 14 and cooling 15.

7. 发明专利

JPH0313293B2 失效
公开(公告)号：JPH0313293B2
公开(公告)日：1991-02-22
申请号：JP11522381
申请日：1981-07-24
申请人： NIPPON STEEL CORP
发明人： INAI TOORU , YAMAGUCHI SHIGEHIRO , NAKAMURA MOTOHARU , ISHIMOTO TADASHI , TANAKA YOSHITADA
IPC分类号： C21D8/12 , C21D9/46

8. 发明专利

JPS5836052B2 失效
公开(公告)号：JPS5836052B2
公开(公告)日：1983-08-06
申请号：JP7424781
申请日：1981-05-19
申请人： NIPPON STEEL CORP
发明人： NAKAMURA MOTOHARU , IWASAKI MASARU , TANAKA YOSHITADA , HIROSE KIKUJI , INOCHI TOORU
IPC分类号： H01F1/18 , C21D8/12 , C21D9/46 , C23C22/00 , C23D5/00

9. 发明专利

JPS582569B2 失效
公开(公告)号：JPS582569B2
公开(公告)日：1983-01-17
申请号：JP14832879
申请日：1979-11-17
申请人： NIPPON STEEL CORP
发明人： TANAKA YOSHITADA , WAKABAYASHI KYOSHI , SUGA YOZO
IPC分类号： C21D8/12 , B21H8/00 , C21D7/00

10. 发明专利

JPH03177517A APPARATUS FOR TREATING UNIDIRECTIONAL ELECTROMAGNETIC STEEL STRIP 失效
公开(公告)号：JPH03177517A
公开(公告)日：1991-08-01
申请号：JP31645389
申请日：1989-12-07
申请人： NIPPON STEEL CORP
发明人： TANAKA YOSHITADA , OSAWA TAKAAKI , TANABE AKIRA
IPC分类号： B21C47/34 , B21B1/22 , B21B1/38 , B21B3/02 , B21H8/00 , C21D7/02 , C21D8/12 , C21D9/46 , C23C22/00
摘要： PURPOSE:To select a insulating film forming treatment and iron loss improving treatment without stopping a line by ascending/descending a unidirectional electromagnetic steel strip along a winding roll shifting guide body under condition of hanging the steel strip on a winding roll. CONSTITUTION:In the case of forming an insulating film on the unidirectional electromagnetic steel strip 3 on the way of the iron loss improving treatment, the winding roll 24 is shifted and descended to position 24' under horizontal pass line along the arc-state shifting guide body 25 under condition of hanging the steel strip 3. By new pass line, the insulating film treatment is executed to the steel strip 3' without being damaged with a gear type roll 21. Further, in the case of changing over to the iron loss improving treatment, by the action reverse to the above, the winding roll 24 is shifted to the upper part of the gear type roll 21 from the position 24' under horizontal pass line, allowing the hanging of steel strip 3'.

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