专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

DE69422557D1 未知
公开(公告)号：DE69422557D1
公开(公告)日：2000-02-17
申请号：DE69422557
申请日：1994-01-27
申请人： NIPPON STEEL CORP
发明人： TERAOKA SHINICHI , MIZUNUMA TAKEHISA , NAKAZAWA TAKANORI , SATOH YUICHI
IPC分类号： C21D8/00 , C21D6/00 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/50
摘要： A process for producing a steel strip having an excellent cast metal toughness from a thin cast chromium-containing stainless steel containing at least 0.05 % in total of niobium, titanium and aluminum, which process comprises casting a stainless steel containing 13-25 % of chromium and at least 0.05 % in total of one or more elements of niobium, titanium, aluminum and vanadium and having a gamma p value as will be defined below of 0 % or less into a thin metal with a thickness of 10 mm or less, hot-rolling immediately thereafter the thin metal in a temperature range of 1,150-950 DEG C at a draft of 5 % or above, conducting either slow cooling at a cooling rate of 20 DEG C/s or heat retention for at least 5 seconds in a temperature range of 1,150-950 DEG C, and winding up the resultant strip below 700 DEG C. gamma p(%) = 420C + 470N + 23Ni + 9Cu + 7Mn - 11.5Cr - 11,5Si - 12Mo - 23V - 47Nb - 49Ti - 52Al + 189 (element content in wt.%).

2. 发明公开

EP0638653A4 PROCESS FOR PRODUCING CHROMIUM-CONTAINING STAINLESS STEEL STRIP WITH EXCELLENT TOUGHNESS. 有权转让
标题翻译：用于生产含铬不锈钢条带，高韧性。
公开(公告)号：EP0638653A4
公开(公告)日：1996-10-09
申请号：EP94905217
申请日：1994-01-27
申请人： NIPPON STEEL CORP
发明人： TERAOKA SHINICHI , MIZUNUMA TAKEHISA , NAKAZAWA TAKANORI , SATOH YUICHI
IPC分类号： C21D8/00 , C21D6/00 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/50
CPC分类号： C21D8/0205 , C21D6/002
摘要： A process for producing a steel strip having an excellent cast metal toughness from a thin cast chromium-containing stainless steel containing at least 0.05 % in total of niobium, titanium and aluminum, which process comprises casting a stainless steel containing 13-25 % of chromium and at least 0.05 % in total of one or more elements of niobium, titanium, aluminum and vanadium and having a gamma p value as will be defined below of 0 % or less into a thin metal with a thickness of 10 mm or less, hot-rolling immediately thereafter the thin metal in a temperature range of 1,150-950 DEG C at a draft of 5 % or above, conducting either slow cooling at a cooling rate of 20 DEG C/s or heat retention for at least 5 seconds in a temperature range of 1,150-950 DEG C, and winding up the resultant strip below 700 DEG C. gamma p(%) = 420C + 470N + 23Ni + 9Cu + 7Mn - 11.5Cr - 11,5Si - 12Mo - 23V - 47Nb - 49Ti - 52Al + 189 (element content in wt.%).

3. 发明专利

JPH11172380A ANTIBACTERIAL STAINLESS STEEL AND ITS PRODUCTION 失效
公开(公告)号：JPH11172380A
公开(公告)日：1999-06-29
申请号：JP26365798
申请日：1998-09-17
申请人： NIPPON STEEL CORP
发明人： MIZUNUMA TAKEHISA , SATSUNOKI TOMIO , HASHIMOTO MASAAKI , ABE MITSUNORI , HASHIMOTO SATOSHI
IPC分类号： C21D6/00 , C21D1/26 , C22C38/00 , C22C38/20 , C23G1/08
摘要： PROBLEM TO BE SOLVED: To produce a stainless steel in which sufficient antibacterial properties are stably shown and to provide a method producible by an ordinary producing process without adding special stages. SOLUTION: This antibacterial stainless steel is the one in which a Cu- concentrated layer is formed on the surface of a stainless steel contg., by weight, 1 to =3%. The surface of the Cu-added stainless steel has grinding meshes and a Cu-concentrated layer contg. an oxide film formed by bright annealing or nitric-hydrofluoric acid treatment. Bright annealing is executed under conditions in which the heating rate is reduced to

4. 发明专利

JPH07243094A SURFACE TREATMENT FOR STAINLESS STEEL 失效
公开(公告)号：JPH07243094A
公开(公告)日：1995-09-19
申请号：JP3878294
申请日：1994-03-09
申请人： NIPPON STEEL CORP
发明人： MIZUNUMA TAKEHISA
IPC分类号： C25D11/38
摘要： PURPOSE:To improve corrosion resistance without deteriorating surface luster by subjecting a stainless steel to anode electrolytic treatment at small quantity of electricity in an aqueous solution consisting of nitric acid and sodium bichromate and then to cathode electrolytic treatment in this solution. CONSTITUTION:A stainless steel is subjected to anode electrolytic treatment in an aqueous solution consisting of (50 to 250)g/l nitric acid and (50 to 250)g/l sodium bichromate, under the condition of (10 to 50)Asec/dm quantity of electricity. Subsequently, as secondary treatment, cathode electrolytic treatment at (50 to 300)Asec/dm is done in this aqueous solution. By the above two-stage treatment, a corrosion protective effect due to the electrodeposition of metal chromium can be obtained without deteriorating the luster of the stainless steel material. The surface of the stainless steel is slightly melted by the cathode electrolytic treatment after anode electrolytic treatment and the soil adhering to the surface is removed, and the electrodeposition of metal chromium can be uniformized.

5. 发明专利

JPH06142712A MANUFACTURE OF THIN CAST BILLET OF CR-BASED STAINLESS STEEL EXCELLENT IN TOUGHNESS 失效
公开(公告)号：JPH06142712A
公开(公告)日：1994-05-24
申请号：JP29438792
申请日：1992-11-02
申请人： NIPPON STEEL CORP
发明人： TERAOKA SHINICHI , SATO YUICHI , MIZUNUMA TAKEHISA , KIRIHARA MASASHI , OKA HIDETAKA
IPC分类号： B21B1/46 , B21B3/02 , B22D11/06 , C21D6/00 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/50
摘要： PURPOSE:To manufacture a thin cast billet of Nb-added Cr-based stainless steel having good toughness. CONSTITUTION:Just after casting the thin cast billet S of =4sec in the temp. range of 1250-900 deg.C in a heat keeping device 2 in a machine and, after that, the cast billet is coiled at

6. 发明专利

JPH062044A PRODUCTION OF THIN CAST SLAB OF FERRITIC STAINLESS STEEL 失效
公开(公告)号：JPH062044A
公开(公告)日：1994-01-11
申请号：JP15793592
申请日：1992-06-17
申请人： NIPPON STEEL CORP
发明人： MINAMINO SHIGERU , MIZUNUMA TAKEHISA , TERAOKA SHINICHI
IPC分类号： B21B1/46 , B22D11/06 , C21D6/00 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/28
摘要： PURPOSE:To prevent the occurrence of cold rolling crack in a cast slab and to obtain a product sheet with high gamma-value at the time of producing a thin cast slab of ferritic stainless steel. CONSTITUTION:A ferritic stainless steel which has a composition consisting of, by weight, =2 kinds among 0.1-5.0% Mo, 0.2-1.0% Cu, 0.05-1.0% Al, and 0.1-1.0% V or further containing, if necessary, 0.0003-0.0030% B and satisfies gamma'p(gamma potential)

7. 发明专利

JPH0535228B2 失效
公开(公告)号：JPH0535228B2
公开(公告)日：1993-05-26
申请号：JP21509784
申请日：1984-10-16
申请人： NIPPON STEEL CORP
发明人： UEDA MASANORI , TSUCHINAGA MASAMITSU , ABE MASAYUKI , YAMAGUCHI SHIGEHIRO , ABE SEISABURO , MIZUNUMA TAKEHISA
IPC分类号： C23G1/08

8. 发明专利

JPH0350837B2 失效
公开(公告)号：JPH0350837B2
公开(公告)日：1991-08-02
申请号：JP19339084
申请日：1984-09-14
申请人： NIPPON STEEL CORP
发明人： ABE SEISABURO , MIZUNUMA TAKEHISA , MINAMINO SHIGERU
IPC分类号： C23G1/08

9. 发明专利

JPS6196092A Method for pickling hot rolled cr stainless steel strip 失效
标题翻译：用于切割热轧不锈钢钢带的方法
公开(公告)号：JPS6196092A
公开(公告)日：1986-05-14
申请号：JP21509784
申请日：1984-10-16
申请人： Nippon Steel Corp
发明人： UEDA MASANORI , TSUCHINAGA MASAMITSU , ABE MASAYUKI , YAMAGUCHI SHIGEHIRO , ABE SEISABURO , MIZUNUMA TAKEHISA
IPC分类号： C23G1/08
CPC分类号： C23G1/085 , C23G1/00
摘要： PURPOSE:To manufacture a stainless steel sheet having superior surface characteristics by descaling a hot rolled Cr stainless steel sheet annealed optionally for a short time with sulfuric acid or hydrochloric acid and by pickling the steel sheet with nitric acid having a specified concn. at a specified temp. for a specified time. CONSTITUTION:A hot rolled Cr stainless steel sheet annealed optionally at 800-1,000 deg.C for a short time is mechanically predescaled by shot blasting or other method, and it is descaled with sulfuric acid or hydrochloric acid. The steel sheet is then pickled with nitric acid having a concn. (y) (g/l) at a temp. (x) ( deg.C) for a time (t) (sec) to remove completely smut. At this time, the values (x), (y), (t) satisfy equations (1)-(5). A Cr stainless steel sheet undergoing no intergranular corrosion and having superior surface characteristics is manufactured.
摘要翻译：目的：通过用硫酸或盐酸任选短时间退火的热轧Cr不锈钢板除锈，制造具有优异表面特性的不锈钢板，并用特定浓度的硝酸酸洗钢板。在指定的温度在指定的时间。构成：在短时间内以800-1000摄氏度任意退火的热轧Cr不锈钢板，通过喷砂或其他方法机械预处理，并用硫酸或盐酸除锈。然后用具有浓度的硝酸酸洗该钢板。（y）（g / l）（x）（deg.C）一段时间（t）（秒）以完全除去污点。此时，值（x），（y），（t）满足式（1）〜（5）。制造不发生晶间腐蚀且具有优异表面特性的Cr不锈钢板。

10. 发明专利

JPS596381A Formation of rust-preventive film to metal 失效
标题翻译：形成防腐薄膜到金属
公开(公告)号：JPS596381A
公开(公告)日：1984-01-13
申请号：JP11367382
申请日：1982-06-30
申请人： Nippon Steel Corp
发明人： ITOU TOORU , KUROSAWA FUMIO , YABUMOTO MASAO , MIZUNUMA TAKEHISA , KOMATA HIROYASU , NAKADA SHIOO
IPC分类号： C23C22/73 , C23C22/02
摘要： PURPOSE: To form a film excellent in rust preventive property on the surface of a metal, by a method wherein a solution of ethyl silicate in alcohol with proper concn. is lowered in the pH thereof by adding an acid to be applied to the surface of the metal and the coated metal is heated to a proper temp. in a reductive atmosphere.
CONSTITUTION: A solution having fine colloidal silica precipitated therein formed by adding an acid such as HCl to a solution containing 0.04W10vol% of ethyl silicate to lower the pH is applied to the surface of a metal and the coated metal is heated to 400W1,200°C in a reductive atmosphere to make it possible to form a thin film showing excellent rust preventive property even under a severe environment and good in gloss. As the above mentioned ethyl silicate, one with silica content of about 20wt% or more, especially, about 30% is pref. As the reductive atmosphere, an inert gas such as N
2 containing 50% or more H
2 or an ammonia decomposed gas with a dew point of -20°C or less is pref.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：在金属表面形成防锈性优异的膜，其中将硅酸乙酯溶液与适当浓度的乙醇溶液通过添加要施加到金属表面的酸将其pH降低，并将涂覆的金属加热到适当的温度。在还原气氛中。构成：通过向含有0.04-10体积％的硅酸乙酯的溶液中加入酸如HCl而形成的在其中沉淀的精细胶体二氧化硅溶液以降低pH，并将涂覆的金属加热至400℃，在还原性气氛中为1200℃，使得即使在恶劣的环境下也具有优异的防锈性并具有良好的光泽的薄膜。作为上述硅酸乙酯，优选二氧化硅含量为约20重量％以上，特别是约30重量％的硅酸盐。作为还原气氛，优选惰性气体如含有50％或更多的H 2的N 2或露点为-20℃或更低的氨分解气体。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式