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51. 发明专利

JPH09268377A PRODUCTION OF ZN-AL PLATED STEEL SHEET 失效
公开(公告)号：JPH09268377A
公开(公告)日：1997-10-14
申请号：JP10415296
申请日：1996-03-29
申请人： NISSHIN STEEL CO LTD
发明人： HOSOMI KAZUAKI , ANDO ATSUSHI , KIKKO TOSHIHARU
IPC分类号： B05D7/24 , C23C22/56 , C23C24/08 , C23C26/00
摘要： PROBLEM TO BE SOLVED: To produce a Zn-Al plated steel sheet good in adhesion at a low cost by coating the surface of an Al plated steel sheet with ZnCl2 , thereafter holding the same to the melting temp. of ZnCl2 or above and plating it with Zn. SOLUTION: In a continuous hot-dip Al plating line, Al plating is applied to regulate the coating weight. The surface of the obtd. Al plated steel sheet is coated with ZnCl2 preferably by the coating weight of 15 to 100g/m . After that, this plated steel sheet is held to >=313 deg.C, i.e., the melting temp. of ZnCl2 , preferably, to 313 to 500 deg.C for 0 to 60sec. In this way, the hot-dip ZnCl2 etches the Al plating layer to melt Al oxides on the surface layer and furthermore to activate the surface. Moreover, a substitution reaction of 3ZnCl2 +2Al=3Zn+2 AlCl3 is brought out, This AlCl3 sublimates at about 183 deg.C, and the surface of the Al plating layer is plated with Zn by about >=1μm thickness to impart red rust resistance, chemical convertibility and coating suitability to the Al plated steel sheet.

52. 发明专利

JPH09118968A HOT ROLLED STEEL SHEET FOR HOT DIP GALVANIZING WITHOUT GENERATING BLISTER 失效
公开(公告)号：JPH09118968A
公开(公告)日：1997-05-06
申请号：JP29882995
申请日：1995-10-24
申请人： NISSHIN STEEL CO LTD
发明人： KOMATSU ATSUSHI , ANDO ATSUSHI , KIKKO TOSHIHARU
IPC分类号： C23C2/02
摘要： PROBLEM TO BE SOLVED: To provide an always stable hot rolled steel sheet for hot dip galvanizing without generating blisters even in the case of a low carbon containing steel. SOLUTION: The hot rolled steel sheet for hot dip galvanizing without generating blisters is manufactured in a continuous hot dip galvanizing line having the reduction zone of a hydrogen containing atmosphere, and the hydrogen content of the steel after the hot dip galvanization is satisfied with the following formula according to the carbon content of the steel: H C+1.4×10 (wherein, H is hydrogen content of steel after galvanization (wt.%); and C is carbon content of steel, wt.%).

53. 发明专利

JPH0881748A HOT DIPPING METHOD FOR HOT ROLLED STEEL PLATE 失效
公开(公告)号：JPH0881748A
公开(公告)日：1996-03-26
申请号：JP24335794
申请日：1994-09-12
申请人： NISSHIN STEEL CO LTD
发明人： HOSOMI KAZUAKI , KOMATSU ATSUSHI , ANDO ATSUSHI , KIKKO TOSHIHARU
IPC分类号： C23C2/02 , C21D1/74 , C22C38/00 , C22C38/18 , C22C38/38 , C25F1/06
摘要： PURPOSE: To produce a hot dipped hot rolled steel plate free from defects such as bare spot. CONSTITUTION: A hot rolled steel plate is descaled and pickled and then desmutted by electrolytic cleaning. The desmutted steel plate is heated rapidly in an H2 -N2 atmosphere up to a temp. in the range between M.P. and (M.P.+100 deg.C) when the melting point of a plating metal is represented by M.P.( deg.C), followed by hot dipping. The electrolytic cleaning is carried out under the conditions of (0.1 to 10)KA/m and 1-60sec electrolysis time in a strongly alkaline aqueous solution containing chelating agents. An H2 -N2 atmosphere containing 1-75vol.% H. is used as the heating atmosphere, and heating is done preferably at >=50 deg.C/sec temp. rise rate. By this method, the occurrence of bear spot, due to smut and the surface concentration of Si, Mn, Cr, etc., can be prevented, and an excellent plating layer can be formed on the surface of the steel plate.

54. 发明专利

JPH06158276A AL OXIDE-COATED IRON MATERIAL EXCELLENT IN INSULATION PROPERTY AND HIGH-TEMPERATURE OXIDATION RESISTANCE 失效
公开(公告)号：JPH06158276A
公开(公告)日：1994-06-07
申请号：JP33386992
申请日：1992-11-20
申请人： NISSHIN STEEL CO LTD
发明人： FUKUI YASUSHI , ANDO ATSUSHI , MORITA YOSHIKAZU , MATSUNO MASANORI , SAITO MINORU
IPC分类号： C23C14/08
摘要： PURPOSE:To develop an iron-base material having an insulating surface excellent in high-temp. oxidation resistance without the insulation property being vanished even if high-temp. heating is repeated by coating the surface of an Fe-base material contg. specified amts. of Al, Cr, rare-earth elements, etc., with Al2O3. CONSTITUTION:An iron-base material contg., by weight, 0.4-8% Al, 8-35% Cr,

55. 发明专利

JPH0681104A PRODUCTION OF HOT DIP ALUMINIZED CR-CONTAINING STEEL STRIP 失效
公开(公告)号：JPH0681104A
公开(公告)日：1994-03-22
申请号：JP25566292
申请日：1992-08-31
申请人： NISSHIN STEEL CO LTD
发明人： ANDO ATSUSHI , HATTORI YASUNORI , KIKKO TOSHIHARU
IPC分类号： C23C2/02 , C23C2/12 , C23C28/02 , C25D3/56
摘要： PURPOSE:To prevent the occurrence of plating defects and to improve corrosion resistance and heat resistance by setting the Cr content in a steel strip, the film thickness of precoating, and heating temp. and time, respectively, at the time of subjecting a steel strip, precoated with Fe (alloy), to heating and then to hot-dip aluminizing. CONSTITUTION:A steel strip containing 2-30wt.% Cr is used, and the surface of this steel strip is precoated with Fe (alloy) by (4 to 8)g/m coatincr weight. Then, this precoated steel strip is heated under the conditions of 650-850 deg.C heating temp. and ; where [Cr] means Cr content (wt.%) in the steel strip, [WFe] means precoating weight (g/m ) of Fe or Fe alloy, [t] means heating time (sec), the symbols (a), (b), and (c) stand for -5, 16.7, and -5.8, respectively. Subsequently, this heated precoated steel strip is immersed in a molten Al bath.

56. 发明专利

JPH05239615A 失效
公开(公告)号：JPH05239615A
公开(公告)日：1993-09-17
申请号：JP7817992
申请日：1992-02-28
申请人： NISSHIN STEEL CO LTD
发明人： ANDO ATSUSHI , KIKKO TOSHIHARU
IPC分类号： C23C8/12 , C23C10/28 , C23C26/00 , C23C28/00
摘要： PURPOSE:To manufacture an insulating material easy to work and having stable electric insulating properties even after working by forming an aluminum oxide film on the surface of an ferrous allay via an iron-aluminum diffusion layer. CONSTITUTION:At least one side of an ferrous allay sheet 1 (common steel, allay steel or stainless steel) is coated with aluminum or an aluminum allay by >=0.5mu by hot dip coating, electroplating or the like. Then, this allay sheet 1 is subjected to heating treatment in the temp. range of 800 to 1200 deg.C for >=1min in an oxidizing atmosphere, and an aluminum oxide film 3 is formed via an iron-aluminum diffusion layer 2. In this way, the objective insulating material excellent in workability can be obtd.

57. 发明专利

JPH03296437A MANUFACTURE OF SUBSTRATE FOR METAL CATALYST SUPPORT 失效
公开(公告)号：JPH03296437A
公开(公告)日：1991-12-27
申请号：JP9958890
申请日：1990-04-16
申请人： NISSHIN STEEL CO LTD
发明人： ANDO ATSUSHI , SAITO MINORU , KIKKO TOSHIHARU
IPC分类号： B01J23/86 , B01J35/04 , F01N3/28
摘要： PURPOSE:To join a honeycomb body and to achieve cost reduction and high function of a catalyst converter by shrinkage fitting a honeycomb body made of a stainless steel foil coated with Al or an Al alloy with an outer cylinder and then heating it under certain conditions. CONSTITUTION:A honeycomb body 2 made of a stainless steel foil coated with Al or an Al alloy is shrinkage fitted with an outer cylinder 1. After that, the resulting body is heated at 800-1100 deg.C for 1 minute to 100 hours to bind the joint parts of the honeycomb body. Joining of the honeycomb body is carried out easily like this and high oxidation-resistance is provided to the honeycomb body and high adhesion strength between a gamma-Al2O3 coating layer and the honeycomb body is obtained. As a result, cost reduction and high function of a catalyst converter are achieved.

58. 发明专利

JP2005313211A Steel-aluminum joint structure 有权
标题翻译：钢 - 铝合金结构
公开(公告)号：JP2005313211A
公开(公告)日：2005-11-10
申请号：JP2004135459
申请日：2004-04-30
申请人： Kobe Steel Ltd , Nisshin Steel Co Ltd , 日新製鋼株式会社 , 株式会社神戸製鋼所
发明人： HATTORI YASUNORI , MIONO TADAAKI , ANDO ATSUSHI , IWASE SATORU , SASABE SEIJI
IPC分类号： B23K11/20 , B23K103/20
摘要： PROBLEM TO BE SOLVED: To obtain a steel-aluminum joint structure having a high joint strength by suppressing the reduction of joint strength due to a brittle layer of Al-Fe binary alloy.
SOLUTION: The joint structure is obtained by laminating aluminum or aluminum alloy on a hot-dip aluminized steel plate by spot welding. The hot-dip aluminized steel plate has a plated layer, which is formed on its surface and contains 3-12 mass% Si, 0.5-3 mass% Fe, and the balance substantial Al. The average concentration of Fe and Si of a nugget formed by the spot welding are not less than 0.1 mass% higher than the contents of Fe and Si of the aluminum or the aluminum alloy respectively. It is preferable that the thickness of the plated layer is 5 μm or more and an Al-Fe-Si ternary alloy layer with an average thickness of 0.2 μm or more exists in the joining interface.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过抑制由于Al-Fe二元合金的脆性层引起的接合强度的降低，获得具有高接合强度的钢 - 铝接头结构。解决方案：通过点焊在热浸镀铝钢板上层压铝或铝合金而获得接头结构。热浸镀铝钢板的表面形成有镀层，含有3-12质量％的Si，0.5-3质量％的Fe，余量大致为Al。通过点焊形成的熔核的Fe和Si的平均浓度分别比铝或铝合金的Fe和Si的含量高0.1质量％以上。优选的是，镀层的厚度为5μm以上，并且在接合界面中存在平均厚度为0.2μm以上的Al-Fe-Si三元合金层。版权所有（C）2006，JPO＆NCIPI

59. 发明专利

JP2005313210A Steel-aluminum joint structure 有权
标题翻译：钢 - 铝合金结构
公开(公告)号：JP2005313210A
公开(公告)日：2005-11-10
申请号：JP2004135446
申请日：2004-04-30
申请人： Kobe Steel Ltd , Nisshin Steel Co Ltd , 日新製鋼株式会社 , 株式会社神戸製鋼所
发明人： HATTORI YASUNORI , MIONO TADAAKI , ANDO ATSUSHI , IWASE SATORU , SASABE SEIJI
IPC分类号： B23K11/20 , B23K103/20
摘要： PROBLEM TO BE SOLVED: To obtain a steel-aluminum joint structure having a high joint strength by suppressing the expansion of a brittle layer of Al-Fe binary alloy in a joining interface.
SOLUTION: The joint structure is obtained by laminating aluminum or aluminum alloy 2 on a hot-dip aluminized steel plate 1 by spot welding. The hot-dip aluminized layer 4 has a composition containing 3-12 mass% Si, 0.5-3 mass% Fe, and the balance substantial Al. A coexisting region 9, where an Al-Fe binary alloy layer 7 and an Al-Fe-Si ternary alloy layer 6 are intermingled, exists in the joining interface of a nugget 8. The coexisting region 9 helps the dispersion of stress so that the joint structure has a high joint strength.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过抑制接合界面中的Al-Fe二元合金的脆性层的膨胀，获得具有高接合强度的钢 - 铝接合结构。解决方案：通过点焊将铝或铝合金2层叠在热浸镀铝钢板1上来获得接头结构。热镀铝层4具有含有3-12质量％Si，0.5-3质量％Fe和余量的Al的组成。在熔核8的接合界面中存在共混有Al-Fe二元合金层7和Al-Fe-Si三元合金层6的共存区域9.共存区域9有助于应力分散，接头结构具有较高的接头强度。版权所有（C）2006，JPO＆NCIPI

60. 发明专利

JP2005118797A WELDING PROCESS FOR Zn-Al-Mg ALLOY-PLATED STEEL SHEET 有权
标题翻译： Zn-Al-Mg合金钢板焊接工艺
公开(公告)号：JP2005118797A
公开(公告)日：2005-05-12
申请号：JP2003354551
申请日：2003-10-15
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： HATTORI YASUNORI , YAMAKI NOBUHIKO , ANDO ATSUSHI
IPC分类号： B23K9/23 , B23K9/235 , B23K103/04 , C23C2/06 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide a welding process by which a Zn-Al-Mg alloy-plated steel sheet can be fusion-welded without bringing about embrittlement cracking of molten metal in a heat-affected zone even when the fusion welding of the Zn-Al-Mg alloy-plated steel sheet is performed without removing a plated layer in advance or suppressing heat input.
SOLUTION: The Zn-Al-Mg alloy-plated steel sheet is welded by feeding to a part to be welded chloride-based mixture of 0-100 mol.% ZnCl
2 and 100-0 mol.% NH
4 Cl, or fluoride-based mixture of 0-100 mol.% KAlF
4 and 100-0 mol.% K
3 AlF
6 , and Mg component and Al component are removed from the plated layer alloy in a vicinity of the welded part, and thus the melting temperature of the plated layer alloy is raised, then, cracking attributed to embrittlement of molten metal at a heat-affected zone is suppressed.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种焊接方法，即使在不影响热影响区的熔融金属的脆化裂纹的情况下，也可以熔融镀Zn-Al-Mg合金钢板，的Zn-Al-Mg合金镀层钢板，而不需要预先除去镀层或抑制热输入。
解决方案：镀Zn-Al-Mg合金钢板通过向0-100摩尔％ZnCl 2 SBO 2和/或100-0的氯化物混合物供料部分进行焊接摩尔％NH 4 SB，或0-100摩尔％KAlF SB 7和100-0摩尔％K SB 3的氟化物基混合物 > AlF 6 ，并且在焊接部附近从镀层合金除去Mg成分和Al成分，因此镀层合金的熔融温度升高，抑制热影响区域的熔融金属的脆化。版权所有（C）2005，JPO＆NCIPI

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