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1. 发明专利

JPS57165114A METHOD FOR COOLING HOT ROLLED STEEL MATERIAL 失效
公开(公告)号：JPS57165114A
公开(公告)日：1982-10-12
申请号：JP4723381
申请日：1981-04-01
申请人： KAWASAKI STEEL CO
发明人： OGAWA YOUZOU , TAKIZAWA SHIYOUICHI
IPC分类号： C21D9/52 , B21B45/02
摘要： PURPOSE:To reduce the temp. differences between a central part and side edge parts and to prevent edge waves in the stage of cooling a hot-rolled steel material by shutting off the areas adjacent to the side edges from the sprays of cooling water. CONSTITUTION:An upper cooling water header 3 is mounted to the upper part of a cooling table at prescribed heights and a lower cooling water header 4 in the lower part. The cooling water 12 sprayed from the cooling water nozzles 8 of the upper, lower headers 3, 4 in the opposite positions of both side edge parts of a steel plate W is shut off by baffle plates 6, 7 and is discharged to the lateral sides of the cooling table. The spraying of the cooling water to the side edge parts which are prone to be cooled more than in the central part by the cooling water is prevented by this, and therefore the temp. differences between the central part and side edge parts of the plate W are reduced, and the temp. distributions are made uniform.

2. 发明专利

JPS57184507A CONTROLLING METHOD FOR COOLING HOT ROLLED STEEL STRIP 失效
公开(公告)号：JPS57184507A
公开(公告)日：1982-11-13
申请号：JP6938581
申请日：1981-05-11
申请人： KAWASAKI STEEL CO
发明人： TAKIZAWA SHIYOUICHI
IPC分类号： B21B45/02 , B21B1/26 , B21B37/44 , B21B37/74 , B21B37/76 , C21D9/52 , C21D11/00
摘要： PURPOSE:To make the temp. distributions of a hot rolled steel strip uniform and to improve the flatness thereof in the stage of cooling said steel strip by measuring the broadside temp. distributions of the strip, comparing the same with an optimum temp. distribution and controlling the cooling by cooling water in the broadside direction of the strip in accordance with the deviations thereof. CONSTITUTION:Just before a hot rolled steel strip W out from the finishing mill 11 of a hot rolling mill enters a coiler 13, the temp. distributions in the broadside direction thereof are measured with a broadside temp. distribution measuring device 5, and are compared with the broadside optimum temp. distribution of the steel plate W with an arithmetic device 6, which calculates the deviations between both. The signals by the deviation values are fed to driving mechanisms 8, 9, which in turn move baffle plates 1A, 1B and 2A, 2B provided freely movably back and forth between upper and lower headers 14 and 15 for cooling water provided above and below the strip W and the steel strip adequately, thereby cooling the strip W until it has the uniform broadside temp. distributions. The strip W is cooled in such a way as to have uniform temp. distributions in its broadside direction and it is coiled with the coiler 13 in the state of having improved flatness.

3. 发明专利

JPS5340607A METHOD OF COOLING HOTTROLLED BAND STEEL 失效
公开(公告)号：JPS5340607A
公开(公告)日：1978-04-13
申请号：JP11616176
申请日：1976-09-28
申请人： KAWASAKI STEEL CO
发明人： NISHIDE TERUYUKI , MIYAKE YUUJI , TAKIZAWA SHIYOUICHI , MORIYA SHIYOUICHI
IPC分类号： B21B45/02 , B21B37/74 , B21B37/76 , C21D1/00 , C21D9/52

4. 发明专利

JPS5437025A METHOD OF ADJUSTING QUALITY OF HEATTROLLED STEEL MATERIALS 失效
公开(公告)号：JPS5437025A
公开(公告)日：1979-03-19
申请号：JP10339877
申请日：1977-08-29
申请人： KAWASAKI STEEL CO
发明人： ITOU ISAO , MORITA MASAHIKO , INOUE TOSHIO , AOYANAGI NOBUO , TAKIZAWA SHIYOUICHI , IWASAKI TOSHIO
IPC分类号： B21B45/02 , C21D1/00 , C21D8/02 , C21D9/00 , C21D9/52 , C21D11/00

5. 发明专利

JPS532370A HOT ROLLED STEEL PLATE REELING TEMPERATURE CONTROL DEVICE 失效
公开(公告)号：JPS532370A
公开(公告)日：1978-01-11
申请号：JP7688476
申请日：1976-06-29
申请人： KAWASAKI STEEL CO
发明人： KITAO SAIJI , TAKIZAWA SHIYOUICHI
IPC分类号： B21B37/74 , B21B37/00 , B21B37/76 , B21B45/02 , C21D11/00

6. 发明专利

JPS5848623A PRODUCTION OF HOT ROLLED STEEL STRIP DIMINISHED IN SCALE DEFECTS 失效
公开(公告)号：JPS5848623A
公开(公告)日：1983-03-22
申请号：JP14473681
申请日：1981-09-16
申请人： KAWASAKI STEEL CO
发明人： OGAWA YOUZOU , MORITA MASAHIKO , AOYANAGI NOBUO , TAKIZAWA SHIYOUICHI
IPC分类号： C21D8/02 , C21D7/13
摘要： PURPOSE:To obtain a hot rolled steel strip diminished in scale defects at economized electric power and water by rolling a heated blank material roughly without rough descaling and descaling the material by high pressure water on the inlet side of finishing mills. CONSTITUTION:In continuous hot rolling, a blank material is roughly rolled without descaling by high pressure water during the time since discharging from a heating furnace till the end of the rough rolling. On the inlet side of finishing mills, the material is descaled by high pressure water at about >=90 deg.C, and is then subjected to finish rolling. By said method, the hot rolled steel strip is obtained with less surface defects occuring in remaining scale. Since there is no temp. drop by rough descaling, the fuel for heating is economized.

7. 发明专利

JPS57137426A PRODUCTION OF LOW YIELD RATIO, HIGH TENSILE HOT ROLLED STEEL PLATE BY MIXED STRUCTURE 失效
公开(公告)号：JPS57137426A
公开(公告)日：1982-08-25
申请号：JP2287781
申请日：1981-02-20
申请人： KAWASAKI STEEL CO
发明人： MORITA MASAHIKO , MANO JIYUNICHI , NISHIDA MINORU , TANAKA TOMOO , AOYANAGI NOBUO , TAKIZAWA SHIYOUICHI
IPC分类号： C22C38/00 , C21D1/19 , C21D8/02 , C21D9/46 , C22C38/18 , C22C38/38
摘要： PURPOSE:To obtain a titled steel plate of the performance equivalent to that of the best record without depending upon a reheating method by specifying the composition of a C-Si-Mn-Cr hot rolled steel plate and the cooling conditions up to coiling after finish rolling. CONSTITUTION:A hot rolled steel plate contg., by weight, 0.02-0.2% C, 0.05- 2.0% Si, 0.5-2.0% Mn, 0.3-1.5% Cr, and if necessary, >=1 kinds of the respective groups, a group of =780 deg.C finish rolling end temp. FT. It is quickly cooled at >=40 deg.C /scooling rates from said end down to a + or -40 deg.Ctemp. region with respect to the temp. TN of the equation I, thence it is held for >=5sec in this temp. region. Following to this, it is again quickly cooled at >=50 deg.C/s cooling rates from said holding temp. down to 550-200 deg.C. Thereby, the steel plate of =60 parameter M of the strength-elongation balance of the equation II, less fluctuations in material quality and superior cold workability is obtained.

8. 发明专利

JPS5550427A MANUFACTURE OF HOT ROLLED MEDIUM OR HIGH CARBON STEEL STRIP SUITABLE FOR USE IN PRECISION PUNCHING 失效
公开(公告)号：JPS5550427A
公开(公告)日：1980-04-12
申请号：JP12185078
申请日：1978-10-03
申请人： KAWASAKI STEEL CO
发明人： MORITA MASAHIKO , ITOU ISAO , AOYANAGI NOBUO , SAITOU YOSHIHIRO , TOUNO TAKEO , TAKIZAWA SHIYOUICHI
IPC分类号： B21B3/00 , B21B3/02 , C21D6/00 , C21D8/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/60
摘要： PURPOSE:To manufacture a steel strip having a spheroidized cementite structure and suitable for use in precision punching by adding a restricted amt. of Ti to a medium or high carbon steel of a predetermined compsn. and by specifying hot rolling and spheroidizing conditions. CONSTITUTION:A medium or high carbon steel is prepared consisting of C 0.2- 0.7%, Si =0.0030% and the balance Fe and having Ti/N>=3. This steel is hot rolled at a finish rolling start temp. of 1030-700 deg.C and a total reduction ratio of 50% or more, followed by cooling to 700 deg.C at an average cooling rate of 10 deg.C/sec or more, coiling at 700-450 deg.C and spheroidizing at Ac1-650 deg.C. By this steel compsn. and the treatments the spheroidizability of the steel is further enhanced.

9. 发明专利

JPS5534659A MANUFACTURE OF HIGH TENSILE STEEL SHEET WITH SUPERIOR COLD WORKABILITY 失效
公开(公告)号：JPS5534659A
公开(公告)日：1980-03-11
申请号：JP10713978
申请日：1978-08-31
申请人： KAWASAKI STEEL CO
发明人： SAKAMOTO AKIO , ITOU ISAO , TAKIZAWA SHIYOUICHI , IKENAGA TAKAO , AOYANAGI NOBUO
IPC分类号： C22C38/00 , C21D8/02 , C21D9/46 , C21D9/52
摘要： PURPOSE:To obtain the title sheet with low yield ratio by treating a steel sheet consisting of a specified amt. of C, Mn, Si, and the balance Fe and inevitable impurities while specifying the temp. in hot rolling and the cooling rate and by coiling the treated sheet. CONSTITUTION:A steel sheet consisting of C 0.05-0.25%, Mn 0.1-2%, Si

10. 发明专利

JPS5399026A METHOD OF MAKING MEDIUMMANDDHIGHH CARBON STEEL HEATTROLLED STEEL MATERIAL HAVING FINE PEARLITE STRUCTURE FOR USE IN CEMENTITE SPHEROIDIZING ANNEALING TREATMENT 失效
公开(公告)号：JPS5399026A
公开(公告)日：1978-08-30
申请号：JP1294777
申请日：1977-02-10
申请人： KAWASAKI STEEL CO
发明人： ITOU ISAO , MORITA MASAHIKO , TAKIZAWA SHIYOUICHI
IPC分类号： C22C38/00 , C21D1/26 , C21D8/02 , C21D9/52 , C22C38/04 , C22C38/14 , C22C38/32 , C22C38/44

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