公开(公告)号：JP2010221298A

公开(公告)日：2010-10-07

申请号：JP2010040619

申请日：2010-02-25

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

Inventor： HAYAKAWA NAOYA ,  ISHIGAMI ATSUSHI ,  OI KENJI ,  SHIMADA KENJI ,  ODAKA MASATAKE

IPC: B23K9/173 ,  B23K9/00 ,  B23K9/18 ,  B23K103/04

CPC classification number: B23K9/1735 ,  B23K9/025 ,  B23K9/09 ,  B23K9/188 ,  B23K28/02 ,  B23K33/004 ,  B23K2201/18 ,  B23K2203/04

Abstract: PROBLEM TO BE SOLVED: To provide a complex method of welding and a complex welding machine thereof having a high productivity while preventing deterioration of toughness of HAZ, by maintaining electric current density in a proper range both for a gas-shield ark welding and a submerged ark welding, in welding steel plates by combining the gas-shield ark welding using multiple electrodes with the submerged arc welding using multiple electrodes.
SOLUTION: In the complex welding method and the complex welding machine in which the gas-shield ark welding is carried out on an abutted part of steel plates and the submerged ark welding is carried out at the rear thereof, the gas-shield ark welding is carried out using two or more electrodes, the first electrode in the gas-shield ark welding being a welding wire having the diameter of 1.4 mm or more while maintaining the electric current density of the first electrode at 320 A/mm
2 or more.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种复杂的焊接方法及其具有高生产率的复合焊接机，同时防止HAZ的韧性劣化，通过将电流密度保持在适用于气体屏蔽方案焊接的适当范围内 和一个浸没式方舟焊接，通过使用多个电极组合使用多个电极的气体屏蔽方案焊接与埋弧焊接来焊接钢板。

解决方案：在复合焊接方法中，在钢板的邻接部分进行气体屏蔽方案焊接的复合焊接机，其后方进行浸没式方焊， 使用两个以上的电极进行方案焊接，气体屏蔽方案焊接中的第一电极是直径为1.4mm以上的焊丝，同时将第一电极的电流密度保持在320A / mm 2 或更多。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010029931A

公开(公告)日：2010-02-12

申请号：JP2008197278

申请日：2008-07-31

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

Inventor： MURAKAMI YOSHIAKI ,  SHIMADA KENJI ,  ODAKA MASATAKE ,  ISHIGAMI ATSUSHI ,  HAYAKAWA NAOYA

IPC: B23K9/18 ,  B23K9/235 ,  B23K9/32

Abstract: PROBLEM TO BE SOLVED: To provide a multi-electrode submerged arc welding method that is suitable for welding in pipe manufacturing of a large diameter welded steel pipe for the purpose of a natural gas/crude oil transporting line pipe or a structural pipe, for example.
SOLUTION: This is a multi-electrode submerged arc welding method of three or more electrodes for which the welding wire for the first and the second electrode has a wire diameter ≤3.2 mm and the welding speed ≥80 cm/min. The atmospheric air component between pre-spray flux particles is substituted for a gas containing no N
2 , and a part from the front edge of the flux spray position to the rear of the molten pool is covered with a sealed cover for preventing mixing of the atmospheric air. For instance, when the part from the front edge of the flux spray position to the rear of the molten pool is covered with the sealed cover for preventing mixing of the atmospheric air, a distance L from the tip end to the rear side of a welding wire projected part of the last electrode is designed to satisfy at least an expression (1): L≥2+0.04×v (wherein v is a welding speed [cm/min]).
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种适用于天然气/原油输送管线或结构管道的大直径焊接钢管的管道制造中的焊接的多电极埋弧焊接法 ， 例如。 解决方案：这是一种三电极或多电极的多电极埋弧焊接方法，第一和第二电极的焊丝的线径≤3.2mm，焊接速度≥80cm/ min。 预喷雾焊剂颗粒之间的大气分量代替不含N 2 的气体，并且从焊剂喷射位置的前边缘到熔池的后部的部分被覆盖有 密封盖，用于防止大气混合。 例如，当从熔剂喷射位置的前边缘到熔池的后部的部分被密封盖覆盖以防止大气的混合时，焊接的前端到后侧的距离L 设计最后一个电极的投线部分至少满足表达式（1）：L≥2+ 0.04×v（其中v是焊接速度[cm / min]）。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009241092A

公开(公告)日：2009-10-22

申请号：JP2008089510

申请日：2008-03-31

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

Inventor： HAYAKAWA NAOYA ,  ISHIGAMI ATSUSHI ,  OI KENJI

IPC: B23K9/12 ,  B23K9/00 ,  B23K9/18

Abstract: PROBLEM TO BE SOLVED: To provide a submerged arc welding machine scarcely causing weld defects even in high current-density welding.
SOLUTION: The submerged arc welding machine is provided with: a wire feeding motor having a rated torque of ≥1.0 N-m, a rotor inertia of ≤1.0×10
-4 kg-m
2 , and a lead time, to reach a rated rotational speed, of ≤100 msec under an unload condition; and a welding power source having drooping characteristics.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：即使在高电流密度焊接中，也提供一种几乎不产生焊接缺陷的埋弧焊机。

解决方案：埋弧焊机设有：额定转矩≥1.0Nm的转子惯量≤1.0×10 -4 kg-m 的送丝电机 2 和提前期，在卸载条件下达到≤100毫秒的额定转速; 以及具有下垂特性的焊接电源。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009233679A

公开(公告)日：2009-10-15

申请号：JP2008079525

申请日：2008-03-26

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

Inventor： ISHIGAMI ATSUSHI ,  HAYAKAWA NAOYA ,  OI KENJI

IPC: B23K9/18 ,  B23K103/04

Abstract: PROBLEM TO BE SOLVED: To provide a submerged arc welding method of a steel material which is favorably used for the welding of a steel tube of large diameter such as a UOE steel tube and a spiral steel tube.
SOLUTION: When executing the submerged arc welding of a steel material from inner and outer sides, the welding condition is set so that the sum of the inner surface weld metal sectional area and the outer surface weld metal sectional area satisfies the inequality (1) 0.28≤(S
1 +S
2 )/t
2 , and further satisfies the inequalities (2) S
1 /t
2 ≤0.27 and (3) S
2 /t
2 ≤0.29 [wherein t denotes the thickness (mm) of the steel material; S
1 denotes the inner surface weld metal sectional area (mm
2 ), except that of a portion overlapping an outer surface weld metal after the welding the outer side; and S
2 denotes the outer surface weld metal sectional area (mm
2 )].
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种有利地用于焊接诸如UOE钢管和螺旋钢管的大直径钢管的钢材的埋弧焊接方法。 解决方案：当从内侧和外侧执行钢材的埋弧焊时，设定焊接条件使得内表面焊接金属截面积和外表面焊接金属截面积之和满足不等式（ 1）0.28≤（S 1 + S 2 / SP>），进一步满足不等式（2）S /SB>/t2≤0.27和（3）S 2 / t 2 ≤0.29[其中t表示 钢材; S 1 表示内表面焊接金属截面积（mm 2 ），除了在外侧焊接外表面焊接金属重叠部分之后; S 2 表示外表面焊接金属截面积（mm 2 ）]。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009214127A

公开(公告)日：2009-09-24

申请号：JP2008059136

申请日：2008-03-10

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

Inventor： ISHIGAMI ATSUSHI ,  HAYAKAWA NAOYA ,  OI KENJI

IPC: B23K9/18 ,  B23K103/04

Abstract: PROBLEM TO BE SOLVED: To provide a submerged arc welding method for a steel material which is suitable to use for pipe-making welding of a large diameter steel pipe such as a UOE steel pipe and a spiral steel pipe.
SOLUTION: When welding the inside and the outside of a steel plate by one layer welding, in at least one side of internal welding and external welding, welding conditions are selected so that the relationship between plate thickness and bead width which is measured on the surface layer of the steel plate, satisfies expression (1): 0.40≤W
1 /t≤0.65 and the relationship between the plate thickness and the bead width which is measured in a position at the depth of 0.4t from the surface layer of the steel plate, satisfies expression (2): W
2 /t≤0.34 [wherein t is the plate thickness (mm), W
1 is the bead width (mm) which is measured on the surface layer of the steel plate and W
2 is the bead width (mm) which is measured in the position of 0.4t in the plate thickness direction from the surface layer of the steel plate].
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供适用于UOE钢管和螺旋钢管等大径钢管的制管焊接的钢材的埋弧焊接方法。

解决方案：通过一层焊接焊接钢板的内外两面时，在内焊和外焊的至少一面上，选择焊接条件，以便测量板厚和焊道宽度之间的关系 在钢板的表层上满足表达式（1）：0.40≤W 1 /t≤0.65，以及在深度位置测量的板厚度和焊道宽度之间的关系 从钢板的表层开始为0.4t满足表达式（2）：W 2 /t≤0.34[其中t为板厚（mm），W 1 是在钢板的表面层上测量的胎圈宽度（mm），W 2 是在板厚方向上以0.4t的位置测量的胎圈宽度（mm） 从钢板的表层]。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2009208114A

公开(公告)日：2009-09-17

申请号：JP2008053327

申请日：2008-03-04

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

Inventor： ISHIGAMI ATSUSHI ,  OI KENJI ,  HAYAKAWA NAOYA

IPC: B23K9/18 ,  B23K103/04

Abstract: PROBLEM TO BE SOLVED: To provide a submerged arc welding method with multiple electrodes for a steel plate suitable for use in welding for manufacturing a large-diameter steel pipe such as a UOE steel pipe, a spiral steel pipe, or the like.
SOLUTION: A distance between the centers of wires from a first electrode to a third electrode is 40-60 mm at a position on the surface of the steel materials. The rate of the electric current of the first electrode (I
1 ) and the second electrode (I
2 ) satisfies the following equation, with the current density of the first electrode set at ≥250 A/mm
2 and that of the second electrode set at ≥150 A/mm
2 . If the number of electrodes is 4, a distance between the centers of wires from the third electrode to the fourth electrode is set at ≤20 mm at a position on the surface of the steel materials. The equation: I
2 /I
1 ≥0.5 where I
1 denotes the first electrode current (A) and I
2 , the second electrode current (A).
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：为了提供适用于制造诸如UOE钢管，螺旋钢管等的大直径钢管的焊接中的钢板的多个电极的埋弧焊接方法 。 解决方案：在钢材表面的一个位置上，从第一电极到第三电极的电线中心之​​间的距离为40-60mm。 第一电极的电流密度（I 1 ）和第二电极（I 2 ）满足下列等式，第一电极组 ≥250A / mm 2 ，第二电极设置在≥150A / mm 2 。 如果电极数为4，则在钢材表面的位置上，从第三电极到第四电极的电线中心之​​间的距离设定为≤20mm。 其中I 1 表示第一电极电流（A），I 2 SB>，第二电极电流（A）。 版权所有（C）2009，JPO＆INPIT