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1. 发明专利

JPH11267846A MOLTEN ZINC SYSTEM PLATED STEEL PLATE WELDING 失效
公开(公告)号：JPH11267846A
公开(公告)日：1999-10-05
申请号：JP7228398
申请日：1998-03-20
申请人： NIPPON STEEL CORP , IDEMITSU KOSAN CO , IDEMITSU ENG KK
发明人： YAMANE KUNIHIDE , KOJIMA KAZUHIRO , NIIGASHIRA HIDETOSHI , YASHIKI TAKASHI , ISHIMOTO HIROYASU
IPC分类号： B23K9/23 , B23K9/14 , B23K35/365
摘要： PROBLEM TO BE SOLVED: To provide a welding method wherein a welding is carried out with a coated arc welding bar, with which a pit or a blow hole is hard to be generated, in a way that the zinc plating is not damaged even at a vicinity of a weld heat affecting part at the welding of a molten zinc plated steel plate to be applied as a roofing material of an oil storage tank and the like. SOLUTION: In a method to arc-weld the molten zinc plated system steel plate, zinc plate adhesion volume of which per face is 60-400 g/m , an adding volume of a carbon being contented in a coating agent is controlled at 0.02-0.50 wt.% against the total coating agent, and a welding heat input is adjusted so as to be 0.5-1.5 kJ/mm to carry out the welding, and content of TiO2 , SiO2 , CaCO2 , Fe-Mn, steel powder is limited.

2. 发明专利

JP2012011407A Method for manufacturing welding joint and welding device for executing the same 有权
标题翻译：用于制造焊接接头和用于执行其的焊接装置的方法
公开(公告)号：JP2012011407A
公开(公告)日：2012-01-19
申请号：JP2010148787
申请日：2010-06-30
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： KOJIMA KAZUHIRO , NOSE TETSUO , INOUE HIROSHIGE
IPC分类号： B23K9/173 , B23K9/095 , B23K9/12 , B23K9/127 , B23K103/04
摘要： PROBLEM TO BE SOLVED: To provide a welding control means allowing a heat input amount not to fluctuate even when a groove sectional area fluctuates when manufacturing a welding joint formed of a steel plate with a plate thickness of >50 mm without using a specified expensive instrument.SOLUTION: When welding is carried out at a constant voltage by moving upward a truck mounted with a welding torch along a groove of a steel plate and two electrode vertical electrogas arc welding is carried out by controlling the truck to move upward following ascending speed of a melt pool based on a welding current, the welding torch is mounted on the truck so as to be moved, the moving speed of the truck is measured, and difference between the moving speed and reference welding speed preliminarily set is calculated for each constant interval. When there is difference, the welding torch is moved upward or downward with a constant distance to change the length of the protrusion of the welding wire, wire feeding speed is changed corresponding to the change of the welding current to control the welding current so as to become constant, and the ascending speed of the melt pool is made to coincide with the reference welding speed to allow heat input during welding to be constant so that welding is carried out.
摘要翻译：要解决的问题：提供一种焊接控制装置，即使当制造板厚度> 50mm的钢板形成的焊接接头时，即使在槽截面积波动时，热输入量也不会波动，而不使用指定昂贵的仪器。
解决方案：通过沿着钢板的槽向上移动安装有焊炬的卡车，以恒定的电压进行焊接，并且通过控制卡车在升序之后向上移动来执行两个电极垂直电动电弧焊接基于焊接电流的熔池的速度，将焊炬安装在卡车上以移动，测量卡车的移动速度，并且为每个计算预先设定的移动速度和参考焊接速度之间的差异恒定间隔。当存在差异时，焊枪以恒定的距离向上或向下移动以改变焊丝的突起的长度，焊丝进给速度根据焊接电流的变化而改变以控制焊接电流，从而变得恒定，使熔池的上升速度与参考焊接速度一致，以允许焊接期间的热输入恒定，从而进行焊接。版权所有（C）2012，JPO＆INPIT

3. 发明专利

JP2011020154A Flux-cored wire for gas shielded welding 有权
标题翻译：用于气体屏蔽焊接的通丝线
公开(公告)号：JP2011020154A
公开(公告)日：2011-02-03
申请号：JP2009168068
申请日：2009-07-16
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： NAKAMURA SHUICHI , KOJIMA KAZUHIRO , HASEGAWA TOSHINAGA , SHIMURA RYUICHI , SASAKI MASAHITO
IPC分类号： B23K35/368 , B23K35/30
摘要： PROBLEM TO BE SOLVED: To provide a flux-cored wire for gas shielded welding, in which weldability in all-position welding and toughness are excellent and in which even weld metal after post welding heat treatment can bring superior toughness.
SOLUTION: The flux-cored wire is characterized in that, in mass% relative to total mass of the wire, it contains a slag agent composed indispensably of 0.3-8.0% CaO and 1.0-8.0% metal fluoride, that it contains, as alloy component, 0.03-0.30% C, 0.2-1.5% Si, 0.5-2.5% Mn, 0.002-0.05% Al, ≤0.010% Nb, ≤0.010% V and the balance consisting of iron, arc stabilizer, and inevitable impurities, and that X=[C]+[Si]/24+[Mn]/6+[Ni]/40+[Cr]/5+[Mo]/4+[Cu]/40+[Ti]/30+5×[B] is 0.20-1.2% and further Y=[Nb]+[V]/2+[Ti]/20 is controlled to be ≤0.012%.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于气体保护焊的药芯焊丝，其中全焊接和韧性的焊接性优异，并且焊后热处理后的均匀焊接金属可以带来优异的韧性。药芯焊丝的特征在于，相对于电线总质量的质量％，其包含不可避免地为0.3-8.0％CaO和1.0-8.0％金属氟化物的熔渣剂，其含有作为合金成分，0.03-0.30％C，0.2-1.5％Si，0.5-2.5％Mn，0.002-0.05％Al，≤0.010％Nb，≤0.010％V，余量由铁，电弧稳定剂和不可避免的组成杂质，并且X = [C] + [Si] / 24 + [Mn] / 6 + [Ni] / 40 + [Cr] / 5 + [Mo] / 4 + [Cu] / 40 + [Ti] 30 + 5×[B]为0.20〜1.2％，进一步将Y = [Nb] + [V] / 2 + [Ti] / 20控制在≤0.012％。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2004090045A Gas shielded arc welding wire for low alloy steel excellent in hydrochloric acid resistance and sulfuric acid resistance, and gas shielded arc welding method using same 有权
公开(公告)号：JP2004090045A
公开(公告)日：2004-03-25
申请号：JP2002255492
申请日：2002-08-30
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： OKITA SHIGERU , KOJIMA KAZUHIRO , USAMI AKIRA , KIMOTO ISAMU
IPC分类号： B23K9/173 , B23K35/30
摘要： PROBLEM TO BE SOLVED: To provide a gas shielded arc welding steel wire which is excellent in corrosion resistance, is securable a satisfactory weldability, and can form a weld metal part excellent in strength and toughness on impact with respect to the welding wire which is used for welding a sulfuric acid dewpoint corrosion resistant steel capable of obtaining excellent corrosion resistance under the environment of concentrated sulfuric acid and concentrated hydrochloric acid, and to provide a welding method using the wire.
SOLUTION: the steel wire for gas shielded arc welding excellent in resistances to hydrochloric acid and sulfuric acid contains C of 0.02 to 0.2 %, Si of 0.2 to 1.5 %, Mn of 0.5 to 2.5 %, P of 0.03 % or less, S of 0.02 % or less, O of 0.003 to 0.05 %, Sb of 0.01 to 0.2 %, and Ni of 0.1 to 1 % in mass % to the whole of wire mass. Moreover, the residuals are of Fe and inevitable impurities. An arc welding is performed in an atmosphere of gaseous CO
2 , mixed gas of CO
2 and Ar, etc. using the wire.
COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2004090042A Flux cored wire for gas shielded arc welding of low alloy steel excellent in resistance to hydrochloric acid and sulfuric acid 有权
公开(公告)号：JP2004090042A
公开(公告)日：2004-03-25
申请号：JP2002255345
申请日：2002-08-30
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： OKITA SHIGERU , KOJIMA KAZUHIRO , USAMI AKIRA , KURAMATA SATORU , SASAKI MASAHITO
IPC分类号： B23K35/30 , B23K35/368
摘要： PROBLEM TO BE SOLVED: To obtain a weld metal excellent in resistance to sulfuric acid and hydrochloric acid, and to aim at the improvement of the resistances to sulfuric acid and hydrochloric acid keeping satisfactory weldability.
SOLUTION: A wire for gas shielded arc welding is filled up with infilling flux in a steel outer sheath. Moreover, the wire contains C of 0.005 to 0.15 %, Si of 0.1 to 2 %, Mn of 0.2 to 3 %, P of 0.03 % or less, S of 0.03 % or less, Cu of 0.1 to 1 %, Ni of 0.1 to 0.65 %, Sb of 0.01 to 0.5 %, and Fe and inevitable impurities as the residuals in mass % to the whole wire mass in either one of the steel outer sheath or the infilling flux or both of those.
COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2002035989A HIGHLY ENRICHED OXYGEN FILLER WIRE FOR LASER BEAM WELDING 失效
公开(公告)号：JP2002035989A
公开(公告)日：2002-02-05
申请号：JP2000215999
申请日：2000-07-17
申请人： NIPPON STEEL CORP
发明人： KOJIMA KAZUHIRO , OKITA SHIGERU , FUJI MASAO
IPC分类号： B23K35/36
摘要： PROBLEM TO BE SOLVED: To provide a highly enriched oxygen filler wire capable of effectively supplying oxygen required to generate an acicular ferrite structure having an excellent low temperature toughness even when executing a high output laser beam welding whose loutput is above 10 Kw. SOLUTION: In a wire filled up with a flux and metal powder in a steel crust, a highly enriched oxygen filler wire is composed of ferrous oxide

7. 发明专利

JP2000169931A STEEL FOR LASER WELDING 失效
公开(公告)号：JP2000169931A
公开(公告)日：2000-06-20
申请号：JP23234299
申请日：1999-08-19
申请人： NIPPON STEEL CORP
发明人： KOJIMA KAZUHIRO , OKITA SHIGERU , FUJI MASAO , AIHARA SHUJI , HOSHINO MANABU , SAITO NAOKI , TSUZUKI TAKESHI
IPC分类号： B23K26/21 , B23K26/32 , C22C38/00 , C22C38/06 , C22C38/58 , B23K26/00
摘要： PROBLEM TO BE SOLVED: To provide steel excellent in laser weldability even without removing mill scales. SOLUTION: This steel is the one having a compsn. contg., by weight, 0.01 to 0.20% C, 0.01 to 1.5% Si, 0.2 to 2.0% Mn, =two kinds among Nb, V, Mo, Cu, Ni, Cr and B as well.

8. 发明专利

JPH07276086A FLUX CORED WIRE FOR MAG WELDING SMALL IN WELDING DEFORMATION 失效
公开(公告)号：JPH07276086A
公开(公告)日：1995-10-24
申请号：JP27599793
申请日：1993-10-08
申请人： NIPPON STEEL CORP
发明人： YOSHIMURA TSUKASA , SUDA KAZUSHI , MOTOE ATSUTADA , KOJIMA KAZUHIRO
IPC分类号： B23K9/173 , B23K35/368
摘要： PURPOSE:To make better the finished bead shape after welding by specifying the contents of C, Si, Mn, Ni or the like in flux as well as the components in the sheath made of steel and the parameter decided by the amt. of each elements. CONSTITUTION:The sheath made of steel is filled with metal powder type flux contg., to the total weight of the wire, 4.0 to 12.0% iron powder, 0.05 to 1.1% arc stabilizer and 0.3 to 3.5% slag forming agent other than arc stabilizers to form a wire including flux for MAG welding. The total weight of the wire in the compsn. of this wire is incorporated with 0.03 to 0.09% C, 0.2 to 1.0% Si, 0.3 to 3.0% Mn and 0.2 to 5.0% Ni. Moreover, one or >= two kinds among 0.1 to l.5% Cu, 0.1 to 3.0% Cr, 0.1 to 2.0% Mo, 0.1 to 0.7% V and 0.01 to 0.05% Nb are incorporated therein. Furthermore, the parameter T decided by the formula is regulated to

9. 发明专利

JPH079191A MAG WELDING FLUX CORED WIRE HAVING LESS WELDING DEFORMATION 失效
公开(公告)号：JPH079191A
公开(公告)日：1995-01-13
申请号：JP5231794
申请日：1994-03-23
申请人： NIPPON STEEL CORP
发明人： YOSHIMURA TSUKASA , SUDA KAZUSHI , MOTOE ATSUTADA , KOJIMA KAZUHIRO
IPC分类号： B23K35/30 , B23K35/368
摘要： PURPOSE:To provide a MAG welding flux cored wire which is decreased in the angular deformation quantity generated at the time of welding and has good finish bead shapes and appearance after the welding. CONSTITUTION:The contents of Mn, Si and C based on the total weight of the wire and further, one kind or >=2 kinds of any among Ni, Cu, Cr, Mo, V and Nb are incorporated into either or both of the steel sheath and filling flux of the MAG welding flux cored wire formed by filing the titania-based flux into the steel sheath. In addition, the value of the parameter T determined by the following formulas by the weight % of the respective elements occupying in the wire is

10. 发明专利

JP2004090051A Flux for submerged arc welding of low alloy steel excellent in resistance to sulfuric acid and hydrochloric acid, and submerged arc welding process 有权
标题翻译：用于耐硫酸和氢氯酸的低合金钢的浸渍弧焊和浸没式焊接工艺
公开(公告)号：JP2004090051A
公开(公告)日：2004-03-25
申请号：JP2002255745
申请日：2002-08-30
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： KOJIMA KAZUHIRO , OKITA SHIGERU , USAMI AKIRA , UMEKI MASAO , SASAKI MASAHITO , KURAMATA SATORU
IPC分类号： B23K9/18 , B23K9/23 , B23K35/362
摘要： PROBLEM TO BE SOLVED: To provide flux for submerged arc welding by which a weld metal excellent in resistance to sulfuric acid and hydrochloric acid is obtained, and to provide a submerged arc welding process.
SOLUTION: Fusible flux for the submerged arc welding of a low alloy steel excellent in resistance to sulfuric acid and hydrochloric acid, contains Sb of 0.01 to 1.5 %, SiO
2 of 0.1 to 50 %, Al
2 O
3 of 0.1 to 50 %, and MgO of 0.1 to 50 %, by mass % to the whole mass of the flux.
COPYRIGHT: (C)2004,JPO

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