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1. 发明专利

JPH05171270A PRODUCTION OF HOT ROLLED STEEL PLATE EXCELLENT IN STRETCH-FLANGE FORMABILITY 失效
公开(公告)号：JPH05171270A
公开(公告)日：1993-07-09
申请号：JP33691991
申请日：1991-12-19
申请人： NIPPON STEEL CORP
发明人： ASANO HIROHIDE , KOYAMA KAZUO , MATSUZU NOBUHIKO , NISHIMOTO MASANORI
IPC分类号： C21D8/02 , C22C38/00 , C22C38/04
摘要： PURPOSE:To obtain the hot rolled steel plate without deteriorating external appearance characteristic and economical efficiency by subjecting a steel having a specific composition free from Nb and Ti to heavy draft in the latter stage of finish rolling, to rolling at high finishing temp., and to air cooling after rolling. CONSTITUTION:A steel having a composition consisting of, by mass, =40% and the steel is rolled at 860-960 deg.C finishing temp., air-cooled for >=1 sec after rolling, successively cooled at >=10 deg.C/sec average cooling rate, and coiled at

2. 发明专利

JPS5966912A Hot rolling method for adjusting width of continuously cast slab having large width variation 失效
标题翻译：用于调整具有大幅度变化的连续铸造板的宽度的热轧方法
公开(公告)号：JPS5966912A
公开(公告)日：1984-04-16
申请号：JP17665482
申请日：1982-10-07
申请人： Nippon Steel Corp
发明人： WATANABE HIDEKAZU , HONGOU MASANOBU , NISHIMOTO MASANORI , FUKUI NOBUO
IPC分类号： B21B1/04 , B21B1/26 , B21B1/46 , B21B37/00 , B21B37/22
CPC分类号： B21B37/22 , B21B1/04 , B21B1/466
摘要： PURPOSE:To eliminate the need for trimming a width variation part, and to improve product yield, by calculating an optimum width rolling reduction basing on the informations of a slab width, and obtaining the uniform width of the slab at a coil stage after rough rolling by rolling the slab basing on the calculated results. CONSTITUTION:The width in the longitudinal direction of a slab 1 having width variation produced in the front stage of hot rolling is measured by a width measuring part 2. The width information required for hot rolling is calculated from the measured results, and optimum width rolling reduction is decided by the information basing on the extent of width variation allowable as a product. And the optimum rolling reductions of respective roughing mills 10, 11 are set and instructed basing on the optimum width rolling reduction. Thus the slab 1 is rolled to the allowable width by a vertical scale breaker 9 having a caliber and the mills 10, 11, basing on the instructions.
摘要翻译：目的：为了消除修剪宽度变化部分的需要，并且通过基于板坯宽度的信息计算最佳宽度轧制，并且在粗轧之后在线圈阶段获得板坯的均匀宽度，从而提高产品产量通过计算结果滚动平板。构成：通过宽度测量部分2测量在热轧前段产生的具有宽度变化的板坯1的纵向宽度。热轧所需的宽度信息由测量结果计算，最佳宽度轧制减少量是根据作为产品允许的宽度变化范围的信息决定的。并且基于最佳宽度轧制压下率来设定和指示各个粗轧机10,11的最佳轧制压下量。因此，通过具有口径的立式断屑器9和基于说明书的磨机10,11将板坯1轧制到允许的宽度。

3. 发明专利

JPH02205630A PRODUCTION OF HOT ROLLED HIGH STRENGTH STEEL PLATE WITH LOW YIELD RATIO FOR CONSTRUCTION USE EXCELLENT IN FIRE RESISTANCE 失效
公开(公告)号：JPH02205630A
公开(公告)日：1990-08-15
申请号：JP2729789
申请日：1989-02-06
申请人： NIPPON STEEL CORP
发明人： KOYAMA KAZUO , MATSUZU NOBUHIKO , NISHIMOTO MASANORI , SHIBATA MASAJI
IPC分类号： B21B1/22 , B21B3/00 , C21D8/02 , C22C38/00 , C22C38/16
摘要： PURPOSE:To produce a hot rolled high strength steel plate with low yield ratio excellent in tire resistance by adding specific amounts of Cu and Ni to a low C-Mn steel and subjecting the above steel to hot rolling, to cooling, and to winding under respectively specified conditions. CONSTITUTION:A slab of a steel which has a composition containing, by weight, 0.02-0.1% C, =750 deg.C, the above metal plate is cooled at 3-40 deg.C/sec average cooling rate and then wound up at 300-600 deg.C. By this method, the hot rolled high strength steel plate with low yield ratio for construction use having a yield point strength at 600 deg.C 0.6 times the yield point strength at ordinary temp. and excellent in fire resistance can be obtained.

4. 发明专利

JPS61195705A AUTOMATIC CONTROLLING METHOD FOR SHEET WIDTH 失效
公开(公告)号：JPS61195705A
公开(公告)日：1986-08-30
申请号：JP3710985
申请日：1985-02-26
申请人： NIPPON STEEL CORP
发明人： FUKUI NOBUO , NISHIMOTO MASANORI , NISHIMOTO SHOICHI
IPC分类号： B21B37/00 , B21B37/22
摘要： PURPOSE:To make uniform the sheet width of a final product with high accuracy and to improve yield by adding the spread which arises when the fluctuation of the sheet thickness is removed to the fluctuation of a sheet width in the stage of adjusting the vertical roll gap of a rolling installation provided with vertical and horizontal rolls with the sheet width fluctuation. CONSTITUTION:A material 6 to be rolled is subjected to thickness and cross rolling by the horizontal rolls 1, 2 and vertical rolls 3, 4 of stands 10, 11. A width detector 5 on the outlet side of the stand 10 measures continuously the width of the material 6. On the other hand, the fluctuation of the sheet width is determined by using the rolling load of the roll 1 measured actually by a load cell 1a and the temp. of the material 6 measured by a radiation thermometer, etc. The fluctuation of the sheet thickness is removed by AGC and is flattened but the spread arises in the part where the thickness is large. The spread is added to the width fluctuation outputted by the detector 5 and the correction rate of the gap of the roll 4 required for correcting the total sheet width fluctuation is calculated and is inputted to a tracking device 8. The above-mentioned correction rate for the width fluctuating part is taken out of the device 8 and the roll 4 gap is corrected accordingly when the width and thickness measuring part of the material 6 moves to the roll 4.

5. 发明专利

JPS54101744A AUTOMATIC CONTROLLING METHOD FOR BREADTH OF STRIP IN HOT STRIP MILL 失效
公开(公告)号：JPS54101744A
公开(公告)日：1979-08-10
申请号：JP868178
申请日：1978-01-27
申请人： NIPPON STEEL CORP
发明人： OSADA SHIYUUJI , NISHIMOTO MASANORI , YOSHIDA HAJIME
IPC分类号： B21B37/00 , B21B37/22
摘要： PURPOSE:To accurately, automatically control the breadth of strip in the roughing mill group provided with vertical rolls, by taking the temperature and the reaction force against the load of the vertical roll as the input information source, and by varying the gap of vertical rolls depending on the feedforward system. CONSTITUTION:The reaction force against the load of the upstream side vertical rolls 10 and the surface temperature of the bar FB at the same place are detected by the reaction force meter 4 and the thermometer 5, and are sent to the memory/ arithmetic unit 6. In the meantime, the clock unit 1 and the mill roll tachometer 2 of the horizontal mill 11 operate 3 the length of the bar FB at every moment since the start of rolling until the end of rolling, depending on the time counted from the start of rolling and the revolution of the roll; thus obtained length of the bar FB is sent to the memory/arithmetic unit 6. The memory/arithmetic unit 6 arithmetically processes above information so as to find out the load deviation and the temperature deviation in longitudinal direction of the bar FB, and then, forecasts the variation in the breadth. Next, the variation of the gap necessary for vertical rolls 10' in the rear stand is settled so as to eliminate this variation in the breadth; and a signal is sent to the roll gap setter 7 for adjusting the gap of vertical rolls 10'.

6. 发明专利

JPS5157666A 失效
公开(公告)号：JPS5157666A
公开(公告)日：1976-05-20
申请号：JP13202074
申请日：1974-11-18
申请人： NIPPON STEEL CORP
发明人： KONO TAKESHI , KOYAMA KAZUO , TAKAMYA MAKOTO , NISHIMOTO MASANORI
IPC分类号： B21D1/02 , B21C37/08 , B21D1/00

7. 发明专利

JPH06228653A PRODUCTION OF HIGH STRENGTH HOT ROLLED STEEL SHEET EXCELLENT IN BULGING PROPERTY AT HIGH YIELD 失效
公开(公告)号：JPH06228653A
公开(公告)日：1994-08-16
申请号：JP1574093
申请日：1993-02-02
申请人： NIPPON STEEL CORP
发明人： ITAMI ATSUSHI , TEFUN MAKOTO , NISHIMOTO MASANORI , KIHARA SHIGERU , UEHARA TAKUO
IPC分类号： C21D8/02 , C21D9/46 , C22C38/00 , C22C38/06
摘要： PURPOSE:To obtain a steel sheet improved in bulging formability at high yield, at the time of subjecting C-Si-Mn series steel having a specified compsn. to hot rolling, by specifying the conditions of the finish rolling finishing temp., cooling and coiling. CONSTITUTION:The compsn. of steel is regulated to, by mass, 0.08 to 0.25% C, 0.7 to 2.5% Si and 0.8 to 3.0% Mn, and the balance substantial Fe. At the time of subjecting this steel to hot rolling, the finish rolling finishing temp. is regulated to the Ar3 to (the Ar3+70) deg.C, and it is cooled to =20 average cooling rate. At this time, it is coiled at 350 deg.C/sec to 500 deg.C in such a manner that the heat transfer coefficient alphau in the cooling from the upper part of the steel strip to the heat transfer coefficient alphaL in the cooling from the lower part of the steel strip, (alphau/'L), is regulated to 0.8 to =590N/mm tensile strength and high bulging formability can be produced at high yield.

8. 发明专利

JPH03219049A HOT ROLLED STEEL SHEET EXCELLENT IN BURRING PROPERTIES AND DUCTILITY AND ITS MANUFACTURE 失效
公开(公告)号：JPH03219049A
公开(公告)日：1991-09-26
申请号：JP20030690
申请日：1990-07-27
申请人： NIPPON STEEL CORP
发明人： ITAMI ATSUSHI , MATSUZU NOBUHIKO , KOYAMA KAZUO , NISHIMOTO MASANORI
IPC分类号： C21D8/02 , C21D9/46 , C22C38/00 , C22C38/04
摘要： PURPOSE:To manufacture a hot rolled steel sheet excellent in burring properties and ductility by subjecting a low carbon steel slab to hot rolling under specified temp. conditions, thereafter executing rapid cooling and coiling it. CONSTITUTION:A steel slab contg., by weight, 0.02 to =0.1mum radius equivalent to a circle by

9. 发明专利

JPH03107425A PRODUCTION OF HOT ROLLED STEEL PLATE EXCELLENT IN PRESS FORMABILITY AND HAVING REMARKABLE HARDENABILITY DUE TO HEAT TREATMENT AFTER FORMING AND HIGH CORROSION RESISTANCE AND PRODUCTION OF STEEL STRUCTURAL MEMBER USING SAME 失效
公开(公告)号：JPH03107425A
公开(公告)日：1991-05-07
申请号：JP24431789
申请日：1989-09-20
申请人： NIPPON STEEL CORP
发明人： KOYAMA KAZUO , MATSUZU NOBUHIKO , NISHIMOTO MASANORI , MURATA TOSHIMICHI
IPC分类号： C23C2/06 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/16
摘要： PURPOSE:To produce a hot rolled steel plate excellent in press formability by hot- rolling a slab of a steel with a specific composition into a coil, reducing the surface of the coil by means of heating up to a specific temp., and then applying hot dip galvanizing to the above coil. CONSTITUTION:A steel which has a composition consisting of, by mass,

10. 发明专利

JPH0221327B2 失效
公开(公告)号：JPH0221327B2
公开(公告)日：1990-05-14
申请号：JP4878785
申请日：1985-03-12
申请人： NIPPON STEEL CORP
发明人： FUKUI NOBUO , PPONGO MASANOBU , NISHIMOTO MASANORI , PPONDA TOMOKI
IPC分类号： B05B12/08 , B21B45/08

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