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1. 发明专利

JPH0797667A PRODUCTION OF ALUMINUM ALLOY SHEET EXCELLENT IN FORMABILITY AND HARDENABILITY IN COATING/BAKING AND HAVING DELAYED AGING CHARACTERISTIC AT ORDINARY TEMPERATURE 失效
公开(公告)号：JPH0797667A
公开(公告)日：1995-04-11
申请号：JP24519593
申请日：1993-09-30
申请人： NIPPON KOKAN KK
发明人： FUJITA TAKESHI , MITAO SHINJI , HASEGAWA KOHEI , SUGA MASATAKA
IPC分类号： C22C21/06 , C22F1/047
摘要： PURPOSE:To obtain an Al alloy sheet having excellent press formability, delayed aging characteristic at ordinary temp., and hardenability in coating/baking by subjecting an ingot of Al alloy with specific composition to homogenizing treatment and to hot rolling and cold rolling and further subjecting the resultant sheet to heating and holding under specific temp. conditions, to cooling, and then to heat treatment. CONSTITUTION:An ingot of an Al alloy, which has a composition containing, by weight, 1.5-3.5% Mg, 0.3-1.0% Cu (where Mg/Cu is regulated to 2-7), 0.05-0.35% Si, 0.03-0.50% Fe, 0.005-0.15% Ti, and 0.0002-0.05% B or further containing one or >=2 kinds among specific small amounts of Mn, Cr, Zr, V, and Zn, is subjected to single state or multistage homogenizing treatment at 400-500 deg.C. This Al alloy ingot is hot-rolled and cold- rolled into an Al alloy sheet of desired sheet thickness, which is heated to 550-580 deg.C at >=3 deg.C/sec temp. rise rate and held for 0-60sec. Subsequently, this sheet is cooled at >=2 deg.C/sec cooling rate, subjected, after standing at room temp. or directly, to heat treatment at 45-110 deg.C for 2-48hr, and then held at 180-300 deg.C for 3-60sec.

2. 发明专利

JPH0364414A PRODUCTION OF STEEL SHEET HAVING HIGH TENSILE STRENGTH AND HIGH TOUGHNESS AND EXCELLENT IN HIC RESISTANCE 失效
公开(公告)号：JPH0364414A
公开(公告)日：1991-03-19
申请号：JP19878789
申请日：1989-07-31
申请人： NIPPON KOKAN KK
发明人： ENDO SHIGERU , NAGAE MORIYASU , SUGA MASATAKA
IPC分类号： C21D8/02 , C22C38/00 , C22C38/58
摘要： PURPOSE:To produce a steel plate having high tensile strength and high toughness and excellent in HIC resistance by successively applying respective treatments of heating, primary rolling, secondary rolling, and cooling to a slab having a specific composition under respectively specified conditions. CONSTITUTION:A slab having a composition consisting of, by weight, 0.02-0.06% C, 0.03-0.50% Si, 0.5-2.5% Mn, 0.005-0.100% Nb, 0.005-0.100% Ti, 0.005-0.100% Al, 0.0005-0.008% Ca, =70% cumulative rolling reduction in the austenite nonrecrystallization temp. region at a rolling finishing temp. of the Ar3 point or above. Further, cooling is performed from a temp. of the Ar3 point or above down to

3. 发明专利

JPH0118968B2 失效
公开(公告)号：JPH0118968B2
公开(公告)日：1989-04-10
申请号：JP20762982
申请日：1982-11-29
申请人： NIPPON KOKAN KK
发明人： SUGA MASATAKA , YAMADA MAKOTO , TAKAHASHI KAZUHIDE , IWASAKI NORIHIRO , TAGAWA HISATOSHI , MATSUI KAZUYUKI , IZAWA TOORU , WATANABE ITARU
IPC分类号： B21B3/00 , C21D1/18 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/44 , C22C38/54

4. 发明专利

JPS62103320A MANUFACTURE OF HIGH TENSION STEEL PLATE HAVING SUPERIOR UNIFORMITY IN DIRECTION OF THICKNESS 失效
公开(公告)号：JPS62103320A
公开(公告)日：1987-05-13
申请号：JP24131585
申请日：1985-10-30
申请人： NIPPON KOKAN KK
发明人： ABE TAKASHI , SUGA MASATAKA , TSUKADA KOSHIRO , WATANABE ITARU
IPC分类号： C21D8/00 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/06
摘要： PURPOSE:To manufacture a high tension steel plate having superior uniformity in the direction of the thickness by subjecting a C-Mn steel to air cooling or slow cooling at

5. 发明专利

JPS6148517A Manufacture of high tension steel having >=60kg/mm2 tensile strength 失效
标题翻译：高张力钢的制造> = 60KG / MM2拉伸强度
公开(公告)号：JPS6148517A
公开(公告)日：1986-03-10
申请号：JP16655584
申请日：1984-08-10
申请人： Nippon Kokan Kk
发明人： TAGAWA HISATOSHI , MATSUI KAZUYUKI , SUGA MASATAKA , TANI SABURO
IPC分类号： C22C38/00 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PURPOSE: To manufacture a high tension steel having high strength and toughness in spite of small amounts of alloying components by subjecting a steel having a restricted composition consisting of C, Si, Mn, P, S, Ti, N, B and Fe to heat treatment and rolling under proper conditions.
CONSTITUTION: A steel consisting of 0.05W0.20% C, 0.02W0.55% Si, 0.41W1.80% Mn, ≤0.020% P, ≤0.015% S, 3.43N-0.00583W3.43N+0.005% Ti [log(Ti-0.010) (N-0.0028)≤-15020/(1100+273)+3.82], ≤0.0003% B [0.0003W0.0010% B in case of ≤0.0002% N' (sol. N), 0.77N'-0.000316W0.77N'+0.000846% B in case of 0.0002W0.0017% N', and log(B-0.0007)(N'-0.0009)≤-13970/(900+273)+5.24] and the balance Fe with inevitable impurities is soaked at ≤1250°C and rolled at the Ar
3 pointW950°C and ≥40% draft. The rolled steel is quenched at once to ≤300°C and tempered at the Ac
1 point or below to obtain a high tension steel having ≥60kg/mm
2 tensile strength.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过将由C，Si，Mn，P，S，Ti，N，B和Fe组成的限制组成的钢进行加热，制造具有高强度和韧性的高强度钢，尽管少量合金组分在适当的条件下进行处理和轧制。构成：由0.05-0.20％C，0.02-0.55％Si，0.41-1.80％Mn，<= 0.020％P，<= 0.015％S，3.43N-0.00583-3.43N + 0.005％Ti [log Ti-0.010）（N-0.0028）<= - 15020 /（1100 + 273）+3.82]，<0.0003％B（0.0002-0.0010％B，在<= 0.0002％N'（溶胶N）的情况下，0.77 在0.0002-0.0017％N'的情况下，N'-0.000316-0.77N'+ 0.000846％B，log（B-0.0007）（N'-0.0009）<= - 13970 /（900 + 273）+5.24] 平衡Fe与不可避免的杂质在<= 1250℃下浸泡，并在Ar3点-95摄氏度和> = 40％草稿下滚动。轧制钢一次淬火至<= 300℃，并在Ac1点以下回火，得到≥60kg/ mm 2的拉伸强度。

6. 发明专利

JPH0465755B2 失效
公开(公告)号：JPH0465755B2
公开(公告)日：1992-10-21
申请号：JP19820686
申请日：1986-08-26
申请人： NIPPON KOKAN KK
发明人： TSUYAMA AOSHI , SUGA MASATAKA , TAKANE AKIRA , TANAKA AKIHIRO , SEKI NOBUHIRO , MATSUMOTO KAZUAKI
IPC分类号： B23K20/00 , B23K20/04

7. 发明专利

JPS6462414A PRODUCTION OF HIGH-TENSILE UNEQUAL-SIDED UNEQUAL THICKNESS STEEL SHAPE 失效
公开(公告)号：JPS6462414A
公开(公告)日：1989-03-08
申请号：JP21862687
申请日：1987-08-31
申请人： NIPPON KOKAN KK
发明人： WATANABE MAKOTO , MORIOKA KIYOTAKA , FUKUSHIGE NOBUO , OKAMOTO KEIJI , MUKAI KATSUTOSHI , SUGA MASATAKA
IPC分类号： C22C38/00 , C21D8/00 , C22C38/04 , C22C38/16 , C22C38/58
摘要： PURPOSE:To easily produce high-tensile unequal-sided unequal thickness steel shapes having uniformly high strength and high hardness by hot rolling a steel having a specific compsn. consisting of C, Si, Mn and Fe and adequately controlling the hot rolling and the subsequent cooling. CONSTITUTION:The steel contg. 0.03-0.18% C, 0.02-0.60% Si, 0.6-2.0% Mn, contg. further >=one kinds among 0.005-0.1% Al,

8. 发明专利

JPS6462209A MANUFACTURE OF HIGH STRENGTH UNEQUAL SIDE AND UNEQUAL THICKNESS STEEL SHAPE 失效
公开(公告)号：JPS6462209A
公开(公告)日：1989-03-08
申请号：JP21862387
申请日：1987-08-31
申请人： NIPPON KOKAN KK
发明人： WATANABE MAKOTO , MORIOKA KIYOTAKA , FUKUSHIGE NOBUO , OKAMOTO KEIJI , MUKAI KATSUTOSHI , SUGA MASATAKA
IPC分类号： B21B45/02 , C21D8/00
摘要： PURPOSE:To make temp.s of a flange part and web part to be nearly equal after rolling by providing a surface temp. measuring devices in front and in rear of an intermediate finishing mill and a finishing mill, forced cooling devices in front and in rear of the intermediate finishing mill and in front of the finishing mill. CONSTITUTION:After heating a raw steel bloom 4 through a heating furnace 5, a rough rolling is performed by a break down mill 6, then, caliber rollings are advanced along the rolling line 12. That is to say, by the roughing-down mill 7, the intermediate finishing mill 8 and the finishing mill, the rough steel bloom 4 is formed into an angle steel. In this case, in front of the intermediate finishing mill 8, temp.s of the parts corresponding to the flange part 2 and web 3 of the steel bloom 4 are measured and based on these values, an estimated temp. drop is judged. Based on it, an amount of cooling wafer is sprayed on upper and lower surfaces of the flange part by the forced cooling device 11 to cool by force.

9. 发明专利

JPS59100214A PRODUCTION OF THICK WALLED HIGH TENSION STEEL 失效
公开(公告)号：JPS59100214A
公开(公告)日：1984-06-09
申请号：JP20762982
申请日：1982-11-29
申请人： NIPPON KOKAN KK
发明人： SUGA MASATAKA , YAMADA MAKOTO , TAKAHASHI KAZUHIDE , IWASAKI NORIHIRO , TAGAWA HISATOSHI , MATSUI KAZUYUKI , IZAWA TOORU , WATANABE ITARU
IPC分类号： B21B3/00 , C21D1/18 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/44 , C22C38/54
摘要： PURPOSE:To produce high tension steel by incorporating 1 or >=2 kinds among V, Ti, Nb in specific amt. to a blank material for the thick walled high tension steel and heating the same to the temp. at which carbonitride of V, Ti and Nb forms a solid solution thoroughly or above, then rolling the same and cooling the rolled steel at the specified volume of the cooling water used for the unit area of the sum of upper and rear surface of the steel plate per min corresponding to the thickness from a specific temp. CONSTITUTION:A steel material is composed, by weight %, of 0.04-0.16 C, 0.02-0.5 Si, 0.4-1.2 Mn, 0.8-5 Ni, 0.2-1.5 Cr, 0.2-1 Mo, 0.01-0.1 solAl, 0.03- 0.15 total of 1 or >=2 kinds among V, Ti, Nb, =40% cumulative draft in a

10. 发明专利

JPH066738B2 失效
公开(公告)号：JPH066738B2
公开(公告)日：1994-01-26
申请号：JP21862687
申请日：1987-08-31
申请人： NIPPON KOKAN KK
发明人： WATANABE MAKOTO , MORIOKA KYOTAKA , FUKUSHIGE NOBUO , OKAMOTO KEIJI , MUKAI KATSUTOSHI , SUGA MASATAKA
IPC分类号： C22C38/00 , C21D8/00 , C22C38/04 , C22C38/16 , C22C38/58

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