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    • 2. 发明专利
    • Laser arc brazing method
    • 激光弧形曝光方法
    • JP2011218424A
    • 2011-11-04
    • JP2010091651
    • 2010-04-12
    • Nippon Steel Corp新日本製鐵株式会社
    • NAITO YASUAKIMIYAZAKI YASUNOBU
    • B23K1/00B23K1/19B23K1/20B23K9/23B23K26/20B23K26/36B23K31/02B23K103/20
    • PROBLEM TO BE SOLVED: To favorably solder two types of metal plates having different surface region materials even when a brazing material does not contain flux.SOLUTION: Laser beams 107, 108 having power required for cleaning or evaporating the surface region material of two different types of metal plates 105, 106 are separately emitted onto each of the metal plates 105, 106. In a rear region in the brazing advancing direction A from the laser beams 107, 108, a flux-less brazing material 109 is fed in a direction of a connection object place after emission of the laser beams 107, 108 while moving in the brazing advancing direction A, and arc is generated in an inert atmosphere between the brazing material 109 and the connection object place for melting the brazing material 109 to braze the metal plates 105, 106.
    • 要解决的问题:即使钎焊材料不含焊剂,也可有利地焊接具有不同表面区域材料的两种金属板。 解决方案:具有用于清洁或蒸发两种不同类型的金属板105,106的表面区域材料所需的功率的激光束107,108分开地发射到每个金属板105,106上。在后面的 在激光束107,108的钎焊前进方向A中,在钎焊前进方向A上移动时,在激光束107,108的发射之后,在无焊剂钎焊材料109的连接对象位置的方向上被供给,电弧为 在钎焊材料109和用于熔化钎焊材料109的连接对象位置之间的惰性气氛中产生,以钎焊金属板105,106。(C)2012,JPO&INPIT
    • 3. 发明专利
    • Laser and arc compound welding method and groove of metal plate for butt welding
    • 激光和弧形化合物焊接方法和用于焊接的金属板的槽
    • JP2011218362A
    • 2011-11-04
    • JP2010086412
    • 2010-04-02
    • Nippon Steel Corp新日本製鐵株式会社
    • MIYAZAKI YASUNOBUNAITO YASUAKIFUKAMI SHUNSUKEMORIMOTO YUTAKA
    • B23K26/20B23K9/16B23K26/14B23K33/00
    • PROBLEM TO BE SOLVED: To prevent molten metal from hanging down and falling down in a sphere shape from a welding portion when the metal plates are mutually butted at the grooves of the metal plates and are welded.SOLUTION: In a region of one groove to be butted, where welding is carried out in one pass, protrusion portions 92a and 92b, and a depressed portion 91 are continuously formed along a long-side direction of the groove. Then, in the groove where the protrusion portions 92a and 92b, and the depressed portion 91 are formed, a metal plate 15 is arranged so that only tip surfaces of the protrusion portions 92a and 92b are butted to the groove to be butted. Thereafter, laser arc hybrid welding is carried out using, as an aiming position of a laser beam 16 and a wire 17, positions on an intersection 96 of a surface 95 including a center region of a gap between the grooves formed by the depressed portion 91, and an edge portion of a side irradiated by the laser beam 16 in a region where the protrusion portion 92 and the depressed portion 91 are formed.
    • 要解决的问题:当金属板相互对接在金属板的凹槽处并被焊接时,防止熔融金属从焊接部分向下垂下并且以球形的形式落下。 解决方案:在要对接的一个槽的区域中,一次进行焊接时,突起部分92a和92b以及凹陷部分91沿着槽的长边方向连续地形成。 然后,在形成有突起部92a,92b以及凹部91的槽中,设置金属板15,使得仅突出部92a,92b的前端面与待对接的槽对接。 此后,使用激光束16和线17的瞄准位置,在包括由凹部91形成的槽之间的间隙的中心区域的表面95的交叉部96上进行激光电弧复合焊接 以及在形成突起部92和凹部91的区域中由激光束16照射的一侧的边缘部。 版权所有(C)2012,JPO&INPIT
    • 4. 发明专利
    • Laser welding joint excellent in joint strength and method for manufacturing the same
    • 焊接接头优良的接头强度及其制造方法
    • JP2012240086A
    • 2012-12-10
    • JP2011112563
    • 2011-05-19
    • Nippon Steel Corp新日本製鐵株式会社
    • NAITO YASUAKIFURUSAKO SEIJIMIYAZAKI YASUNOBU
    • B23K26/20B23K103/04C22C38/00C22C38/04
    • PROBLEM TO BE SOLVED: To obtain a laser welding joint more excellent in joint strength than a conventional one.SOLUTION: There is disclosed the laser welding joint formed by joining a plurality of lapped steel sheets where content [P] of P and content [S] of S satisfy [P]+5[S]≥0.026 mass% by laser beam. The laser welding joint has a closed-loop or closed-loop-like real bead with an average bead width of W, a closed-loop or closed-loop-like tempered bead where an inner terminal is arranged at a distance of >W and ≤2.2 W on the inner side from the outer terminal of the real bead, and a closed-loop or closed-loop-like compressing position imparting bead where an outer terminal is arranged at a distance of >1.5 W and ≤4.0 W on the inner side from the outer terminal of the real bead.
    • 要解决的问题:获得比传统焊接接头更好的接合强度的激光焊接接头。 解决方案:公开了通过激光焊接多个成层钢板而形成的激光焊接接头,其中P的含量[P]和S的含量[S]满足[P] +5 [S]≥0.026质量% 光束。 激光焊接接头具有平均焊道宽度为W的闭环或闭环状真珠,闭环或闭环状回火焊珠,其中内端子布置在> W的距离处, 在实际胎圈的外侧端子的内侧具有≤2.2W的宽度,以及赋予胎圈的闭环或闭环状压缩位置,其中外端子布置在> 1.5W和≤4.0W的距离处 内侧从真珠的外端。 版权所有(C)2013,JPO&INPIT
    • 5. 发明专利
    • Laser brazing method
    • 激光打标方法
    • JP2011218423A
    • 2011-11-04
    • JP2010091650
    • 2010-04-12
    • Nippon Steel Corp新日本製鐵株式会社
    • NAITO YASUAKIMIYAZAKI YASUNOBU
    • B23K1/005B23K3/06B23K26/20B23K103/04
    • PROBLEM TO BE SOLVED: To form an excellent brazing portion when a metal plate is brazed by emitting laser beams onto a brazing material and melting the brazing material.SOLUTION: A process to insert the brazing material 107 from the front side in the brazing advancing direction A with regard to an optical path of laser light 106 emitted onto brazing object places of the metal plates 104, 105, and a process to return the brazing material 107 out of the optical path of the laser light 106 after droplets 107b of the brazing material 107 move to the brazing object places from the tip of the brazing material 107, are performed alternately with a constant period.
    • 要解决的问题:当通过将激光束发射到钎焊材料上并熔化钎焊材料来钎焊金属板时,形成优异的钎焊部分。 解决方案:从金属板104,105的钎焊对象位置的激光106的光路的钎焊前进方向A的前侧插入钎料107的工序, 在钎焊材料107的液滴107b从钎焊材料107的前端移动到钎焊对象位置之后,将钎焊材料107从激光106的光路返回,以一定的周期交替进行。 版权所有(C)2012,JPO&INPIT
    • 6. 发明专利
    • Method for manufacturing steel sheet welded part excellent in delayed fracture resistance and steel structure having welded part
    • 焊接部件优良的钢板制造方法,具有焊接部件的延迟断裂电阻和钢结构
    • JP2012240083A
    • 2012-12-10
    • JP2011112519
    • 2011-05-19
    • Nippon Steel Corp新日本製鐵株式会社
    • NAITO YASUAKIMIYAZAKI YASUNOBU
    • B23K26/20B23K26/14B23K103/04
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a steel sheet welded part excellent in delayed fracture resistance, and also to provide a steel structure having the welded part.SOLUTION: A plurality of steel sheets are lapped or abutted, laser beam is irradiated to a surface of an uppermost steel sheet of a lapped part and an abutted part, and when forming the welded part while melting the steel sheets to the rear surface of a lowermost steel sheet, laser beam is re-irradiated once or more times to welded metal in such a way as not to penetrate the rear surface of the lowermost steel sheet in contact with the atmosphere while supplying shielding gas with an absolute humidity of ≤2 g/mto the welded part of the surface of the uppermost steel sheet within 10 minutes after the welded part is formed, and the welded metal is re-melted by the number of times of irradiation.
    • 要解决的问题:提供一种制造具有优异的耐延迟断裂性的钢板焊接部分的方法,并且还提供一种具有焊接部分的钢结构。 解决方案:多个钢板被搭接或抵接,激光束照射到搭接部分和邻接部分的最上面的钢板的表面,并且当形成焊接部分同时将钢板熔化到后部 最下面的钢板的表面,将激光束一次或多次重新照射到焊接金属,使得不会穿过与大气接触的最下面的钢板的后表面,同时提供绝对湿度为 在焊接部形成后10分钟内,最上面的钢板的表面的焊接部分,≤2g/ m 3 ,焊接金属被熔融 照射次数。 版权所有(C)2013,JPO&INPIT
    • 7. 发明专利
    • Lap welding method for steel sheet, and lap-welded joint of steel sheet
    • 钢板LAP焊接方法及钢板焊接接头
    • JP2010264503A
    • 2010-11-25
    • JP2009120095
    • 2009-05-18
    • Nippon Steel Corp新日本製鐵株式会社
    • MIYAZAKI YASUNOBUNAITO YASUAKISAKIYAMA TATSUYASAIDA KENJI
    • B23K26/20B23K11/11B23K11/16B23K28/02B23K103/04
    • PROBLEM TO BE SOLVED: To provide a lap welding method for steel sheets for lap-welding a plurality of steel sheets including a steel sheet having relatively small sheet thickness with high joining strength, and to provide a lap-welded joint for steel sheets. SOLUTION: The lap welding method for steel sheets comprises: a spot welding stage where in a state that a surface side steel sheet 1a and high sheet thickness steel sheets 1b, 1c having sheet thickness higher than that of the surface side steel sheet 1a are lapped in such a manner that the surface side steel sheet 1a is arranged at a surface side, the steel sheets 1a to 1c are spot-welded while being pressurized from the sheet thickness direction so as to provide the steel sheets 1a to 1c with a spot weld zone 5; and a laser welding stage where the spot weld zone 5 or the circumference of the spot weld zone 5 is irradiated with a laser beam L, and the surface side steel sheet 1a and the high sheet thickness steel sheet 1b are laser-welded. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供一种用于搭接多个钢板的钢板的搭接焊接方法,所述多个钢板包括具有高接合强度的板厚度较小的钢板,并且提供钢的搭接焊接 床单。 解决方案:钢板的搭接焊接方法包括:点焊阶段,其中在表面侧钢板1a和板厚度高于表面侧钢板的钢板厚度高的钢板1b,1c的状态下 1a以表面侧钢板1a配置在表面侧的方式进行研磨,钢板1a〜1c从板厚方向加压而点焊,从而将钢板1a〜1c 点焊区5; 以及用激光束L照射点焊区域5或点焊区域5的周边的激光焊接台,激光焊接表面侧钢板1a和高板厚钢板1b。 版权所有(C)2011,JPO&INPIT
    • 8. 发明专利
    • Laser welded lap joint made of high-strength steel sheets and method for manufacturing the same
    • 高强度钢板的激光焊接拉丝接头及其制造方法
    • JP2010158717A
    • 2010-07-22
    • JP2009119723
    • 2009-05-18
    • Nippon Steel Corp新日本製鐵株式会社
    • NAITO YASUAKIMIYAZAKI YASUNOBUYONEMURA SHIGERUUENISHI AKIHIRO
    • B23K26/20
    • PROBLEM TO BE SOLVED: To provide a laser welded lap joint made of high-strength steel sheets and a method for manufacturing the same, which prevents a break even in a weld metal with narrow beads formed with a small heat input and provides stable strength, in the case of manufacturing the laser welded lap joint made of the high-strength steel sheets by laser beam welding. SOLUTION: The laser welded lap joint is manufactured by the laser beam welding of high-strength steel sheets 1 and 2 having a tensile strength of 440 MPa or more. The ratio (Lb/Ws) of the weld length (Lb) of the laser beam welded part 4 to the width (Ws) of the sheets 1 and 2 to be welded is 0.6 or more. The ratio of the weld width of the laser beam welded part 4 to the thickness of the sheets 1 and 2 is 0.8 or more and 2 or less. Openings 9 piercing through the sheet thickness whose length along a direction perpendicular to the longitudinal direction of the laser beam welded part 4 is 80% or more of the weld width around the laser beam welded part 4 are provided in both areas adjoining the initiating portion and the terminating portion of the laser beam welded part 4. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种由高强度钢板制成的激光焊接搭接接头及其制造方法,即使在形成有小热输入的窄珠的焊缝金属中也能防止断裂,并且提供 在通过激光束焊接制造由高强度钢板制成的激光焊接搭接接头的情况下,具有稳定的强度。 解决方案:激光焊接搭接接头是通过拉伸强度为440MPa以上的高强度钢板1和2的激光焊接制造的。 激光束焊接部4的焊接长度(Lb)与待焊接的片材1和2的宽度(Ws)的比(Lb / Ws)为0.6以上。 激光束焊接部4的焊接宽度与片材1和2的厚度的比率为0.8以上且2以下。 在与激光束焊接部4的长度方向垂直的方向上的长度为80度以上的贯穿激光束焊接部4的焊接宽度的板厚的开口9设置在与起动部相邻的两个区域, 激光束焊接部分4的端接部分。版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • Laser beam lap welding method of structural member
    • 结构构件的激光光束焊接方法
    • JP2009195917A
    • 2009-09-03
    • JP2008037393
    • 2008-02-19
    • Nippon Steel Corp新日本製鐵株式会社
    • MIYAZAKI YASUNOBUSAIDA KENJINAITO YASUAKI
    • B23K26/20B23K26/32B23K103/04
    • PROBLEM TO BE SOLVED: To form a weld part having delayed breakdown resistance in the lapped portion of steel plates without causing any conspicuous welding deformation in a structural member in the laser beam welding of the structural member with a plurality of steel plates lapped thereon.
      SOLUTION: In the laser beam lap welding method of forming a weld part by irradiating the lapped portion of steel plates of a structural member with a plurality of curved steel plates lapped thereon with a laser beam, (i) a plurality of steel plates which are curved at a curvature to satisfy following expression (1), and (ii) the laser beam is moved in the curved direction and the lapped portion of the steel plates is irradiated with the laser beam to form the weld part having excellent delayed breakdown resistance. The expression (1) is 1.2×(1/Ri)≥1/Ro≥1.05×(1/Ri) (wherein 1/Ro is the curvature of the steel plate arranged on the outer side of the radial direction of the curvature; and 1/Ri is the curvature of the steel plate arranged on the inner side of the radial direction of the curvature).
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:在具有多个钢板的结构件的激光束焊接中,在钢板的搭接部分中形成具有延迟击穿电阻的焊接部件,而不会导致结构部件中的任何显着的焊接变形, 上。 解决方案:在通过用激光束在其上搭载有多个弯曲钢板的情况下,将结构构件的钢板的搭接部分照射成形焊接部分的激光束搭接焊接方法中,(i)多根钢 以曲率弯曲以满足以下表达式(1)的板,和(ii)激光束在弯曲方向上移动,并且用激光束照射钢板的重叠部分以形成具有优异延迟的焊接部分 耐击穿性 式(1)为1.2×(1 / Ri)≥1/Ro≥1.05×(1 / Ri)(1 / Ro为配置在曲率半径方向外侧的钢板的曲率。 1 / Ri是配置在曲率半径方向内侧的钢板的曲率)。 版权所有(C)2009,JPO&INPIT