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

JPH1046362A ALUMINUM COATED STEEL SHEET HAVING EXCELLENT UNIFORMITY OF SURFACE COLOR TONE AND ITS PRODUCTION 失效
公开(公告)号：JPH1046362A
公开(公告)日：1998-02-17
申请号：JP21792696
申请日：1996-07-30
申请人： NIPPON STEEL CORP
发明人： MAEHARA KAZUYOSHI , FUJITA TAMIO , INABA MITSUNOBU
IPC分类号： C23C2/12 , C23C30/00
摘要： PROBLEM TO BE SOLVED: To obtain the above Al coated steel sheet without subjecting the steel sheet to coating or coating application of a resin by specifying surface roughness, the number of rugged parts formed on the surface and the variations in color tones. SOLUTION: Dull rolls formed with annular recessed parts having a prescribed diameter, pitch and depth by subjecting to a laser dulling are built into a rolling mill in order the form the annular rugged parts 13 having the prescribed diameter D, pitch S and height H on the Al coated steel sheet 10 by transfer working. The steel sheet consisting of base iron 11 is continuously subjected to surface cleaning and softening and is passed in a hot dip Al coated bath by which molten Al is adhered to its suffice. After the coating is adjusted to a prescribed coating surface density, the coating layer 12 is solidified by cooling. Next, the steel sheet is rolled by the dull rolls described above to transfer and form the rugged parts 13 in a tempering stage. The Al coated steel sheet which is 0.6 to 3μin the surface roughness Ra, >=600 pieces in the number of the many rugged parts 13 formed on the surface and

2. 发明专利

JPH08290201A CONTINUOUS SHEET METAL TREATING LINE CAPABLE OF DOUBLE COLD ROLLING-DOUBLE ANNEALING 失效
公开(公告)号：JPH08290201A
公开(公告)日：1996-11-05
申请号：JP9554195
申请日：1995-04-20
申请人： NIPPON STEEL CORP
发明人： FUJITA TAMIO , YAMAMOTO IKUYA , NISHIJIMA KATSUSHI
IPC分类号： B21B1/22 , C21D9/56
摘要： PURPOSE: To lower a rolling load and to stabilize a shape by arranging continuously primary annealing equipment for heating a sheet metal to a recrystallization temperature or over and cooling, secondary cold rolling equipment and secondary annealing equipment behind hot rolling, pickling and primary cold rolling equipment. CONSTITUTION: Scales of a hot rolled coil discharged from hot rolling equipment 1 are removed by pickling equipment 2, and the hot rolled coil is rolled to a desired plate thickness by primary cold rolling equipment 3. Next, primary annealing equipment 4, secondary rolling equipment 5, and secondary annealing equipment 6 are continuously arranged. The coil after the primary cold rolling is heated by the primary annealing equipment 4, but the coil requiring double cold rolling is recrystallized by heating to a recrystallization temperature or over by the primary annealing equipment 4, and is sent to the secondary rolling equipment 5. In the secondary rolling equipment 5, the coil is rolled after the recrystallization, and is annealed by the secondary annealing equipment 6. However, the coil not requiring the double old rolling is passed through by opening the rolls of the secondary rolling equipment 5. Consequently, since rolling under a high pressure is not necessary in the primary cold rolling, the fracture of a plate can be suppressed and a shape can be stabilized.

3. 发明专利

JPH0890018A METHOD FOR INJECTING COOLANT FOR ROLLING ROLL 失效
公开(公告)号：JPH0890018A
公开(公告)日：1996-04-09
申请号：JP22485094
申请日：1994-09-20
申请人： NIPPON STEEL CORP
发明人： FUJITA TAMIO , YASUDA HISASHI , HASHIMOTO ITARU , YAMAMOTO IKUYA
IPC分类号： B21B27/10 , B21B28/04
摘要： PURPOSE: To satisfy basic functions of a roll coolant and to prevent generation of roll scratch. CONSTITUTION: In the method of injecting a coolant by an injection nozzle to the rolls of a rolling mill, a nozzle 9 for removing foreign matters is provided other than a nozzle 7 for cooling, for example, and foreign matters on the roll surface is removed by injecting the coolant in the direction opposite to the rotation of a roll 5, within the area on the surface of the roll 5 and on the upstream side of the rotating direction of the roll 5 from the line OT that links the axial center of the roll 5 and the injection nozzle 9 for removing foreign matters.

4. 发明专利

JPH07236903A METHOD FOR CONTROLLING PRESSURE OF COOLANT FOR COLD ROLLING 失效
公开(公告)号：JPH07236903A
公开(公告)日：1995-09-12
申请号：JP3042194
申请日：1994-02-28
申请人： NIPPON STEEL CORP
发明人： HASHIMOTO ITARU , INABA MITSUNOBU , FUJITA TAMIO , MAEDA KENTARO
IPC分类号： B21B27/10 , B21B28/04
摘要： PURPOSE:To suppress the energy consumption without entirely reducing the effect of prevention of the occurrence of flaw in preventing the occurrence of flaw by injecting high pressure fluid to a work roll in the cold rolling of a metal sheet. CONSTITUTION:At the time of cold rolling with a continuous rolling mill, the adherence of foreign matters on the work roll is prevented by raising injection pressure and injecting a coolant which is pressurized to >=150MPa to the outlet side of the work roll where a part having many flaws in the coil of an original sheet is passed through. Roll flaws are caused by the remainders in scarfing of a slab, mechanical contact flaw in a coiler at the time of coiling after hot rolling, handling flaw in transportation of coil, contact flaw between coils at the time of stretching, etc., the foreign matters which are brought in during cold rolling are concentrated at the tip and rear end of the coil of the original sheet. So, by removing the adhered foreign matters in these parts by concentrately injecting the coolant at high pressure, the surface of the work roll is maintained in the clear state.

5. 发明专利

JPH0732020A METHOD FOR ROLLING STEEL STRIP TO BE ROLLED HAVING SHEET SIZE CHANGING POINT 失效
公开(公告)号：JPH0732020A
公开(公告)日：1995-02-03
申请号：JP18310293
申请日：1993-07-23
申请人： NIPPON STEEL CORP
发明人： CHIKASAWA FUMIICHIRO , INABA MITSUNOBU , HIROWATARI ATSUSHI , FUJITA TAMIO
IPC分类号： B21B1/22 , B21B13/14 , B21B37/00 , B21B37/26 , B21B37/42
摘要： PURPOSE:To eliminate defective shapes of steel strip caused on the timing adjustment of relative movement of a sheet size changing point and working rolls with upper and lower one side tapers in a case of continuous rolling the steel strip of differential sheet size of sheet thickness, sheet width, etc., with the working roll with one side taper. CONSTITUTION:In a rolling method of a steel strip having sheet size changing points where working rolls with single side taper having a taper of tapering-off at single side and parts of mutually opposing directions against the axial line direction are arranged up and down, and the sheet size changing point is adjusted by respectively moving the single side tapered working rolls to the reverse directions to the respective axial line directions, the adjustment is execute so that an intermediate point of movement timing of the axial line direction of working roll with one side taper for changing sheet size is made almost at the sheet size changing point. In a case to apply continuously rolling a preceding steel strip and a following steel strip with differential sheet width or thickness, defective shapes formed during relatively moving of rolls respectively generating at forth and rear ends of the preceding steel strip and the following steel strip can be received within the range usually blocked in next process.

6. 发明专利

JPH06308052A FLAW DETECTION METHOD FOR ROLLED STEEL PLATE 失效
公开(公告)号：JPH06308052A
公开(公告)日：1994-11-04
申请号：JP9980593
申请日：1993-04-26
申请人： NIPPON STEEL CORP
发明人： FUJITA TAMIO , CHIKASAWA FUMIICHIRO , MAEDA KENTARO , MORI TOSHIHIRO
IPC分类号： G01B11/30 , G01N21/88 , G01N21/89 , G01N21/892 , G06T1/00 , G06F15/62 , G06F15/64
摘要： PURPOSE:To improve detection accuracy in flaw detection in width direction position by taking advantage of roll flaw having a pitch accompanied by the rolling in the case of detecting an original point flaw in a whole wide image of the steel plate and magnifying the flaw part for monitoring. CONSTITUTION:A picture with a whole width of the plate and length corresponding to one rotation of a roll is first photographed with a total monitoring camera 1 and from this image data, roll flaw is detected. Then, a small region including the position the roll flaw exists, is magnified and photographed with a flaw part monitoring camera 2 to rolled steel plate.

7. 发明专利

JPS5930405A Production of thin steel sheet having section which is extremely equal in thickness in transverse direction 失效
标题翻译：生产具有横向方向极度均匀厚度的薄钢板
公开(公告)号：JPS5930405A
公开(公告)日：1984-02-18
申请号：JP14093882
申请日：1982-08-16
申请人： Nippon Steel Corp
发明人： ASAMURA TAKASHI , KURATA YOSHITERU , FUJITA TAMIO
IPC分类号： B21B37/28 , B21B1/22 , B21B37/00
CPC分类号： B21B1/22
摘要： PURPOSE:To obtain a cold rolled thin steel sheet having a rectangular section which is equal in thickness in a transverse direction by combining adequately the sectional shape of a raw plate, the diameter of work rolls for rolling, the control of the deflection of the rolls and the selection of roll curves. CONSTITUTION:A raw plate for cold rolling which has >=0.985Hx/Hc (thickness at 15mm. from width/thickness in the central part) is selected according to the level of the rectangular section of the thin cold rolled steel sheet required. The cold rolling of such raw plate is accomplished by using >=1 among the work rolls having =50mm. from the end of the plate, and the projecting curve of the required work rolls. Such roll diameter, roll deflection and roll flatness are selected by each of passes and stands according to the section level of the target thin steel sheet. The thin steel sheet having >=0.975Hx/Hc and having the thickness equal in the transverse direction is obtd. by the above-mentioned method.
摘要翻译：目的：通过充分组合原料板的截面形状，轧制用工作辊的直径，轧辊的挠曲的控制，得到横向厚度相等的矩形截面的冷轧薄钢板和滚动曲线的选择。构成：根据所需的薄型冷轧钢板的矩形截面的高度，选择> = 0.985Hx / Hc（中心部宽度/厚度15mm的厚度）的冷轧用原料板。这种原料板的冷轧通过在具有<= 500mm·φ需要直径的工作辊中使用≥1来实现，控制工作辊的挠曲> = 50mm。从板的端部和所需工作辊的突出曲线。根据目标薄钢板的截面水平，通过每个通道和支架来选择这种辊直径，辊偏转和辊平面度。具有> = 0.975Hx / Hc并且具有在横向方向上相等的厚度的薄钢板。通过上述方法。

8. 发明专利

JPH1058018A COLD ROLLING METHOD 失效
公开(公告)号：JPH1058018A
公开(公告)日：1998-03-03
申请号：JP24556696
申请日：1996-08-27
申请人： NIPPON STEEL CORP
发明人： FUJITA TAMIO , INABA MITSUNOBU , MAEDA KENTARO
IPC分类号： B21B33/00 , B21B37/18
摘要： PROBLEM TO BE SOLVED: To prevent rolling troubles (for example, drawing accident due to tension floating) generated at the time of rolling the steep part of variation in thickness with a cold rolling mill. SOLUTION: This method is a cold rolling method for rolling a metal plate 11 into a desired thickness with the cold rolling mill 15 while pickling the plate in a pickling tank 13 and a thickness measuring meter 17 is provided at a distance of not less than a prescribed metal plate stoppable length S1 obtained by v /(2.α0 ) along the metal plate 11 from the inlet of the cold rolling mill 15 to the side of the pickling tank 13 on the outlet side of the pickling tank 13. Thus, the thickness of the metal plate 11 which is passed through the thickness measuring meter 17 is measured and, and by detecting the variation in thickness due to overpickling, the cold rolling mill 15 is controlled. Where, (v) is the transporting speed (m/min) of the metal plate 11 and a o is the reduction rate (m/min ) of the metal plate 11.

9. 发明专利

JPH07284826A METHOD FOR DETECTING ABNORMALITY IN SPRAY LUBRICATION IN REASSEMBLING ROLL IN COLD ROLLING MILL 失效
公开(公告)号：JPH07284826A
公开(公告)日：1995-10-31
申请号：JP7759894
申请日：1994-04-15
申请人： NIPPON STEEL CORP
发明人： HASHIMOTO ATSUSHI , FUJITA TAMIO
IPC分类号： B21B27/10 , B21B31/08 , B21B33/00
摘要： PURPOSE:To judge an abnormal part in the total spray lubrication system to prevent the retard of measures by performing the examination where a roll chock is overhauled and re-assembled, and the examination of a connection part of a spray lubrication system to each roll stand after removing the factors at an exhaust part in this order. CONSTITUTION:After a roll chock is assembled, an off-line spray device of one roll capacity size which is provided in the other off-line than the spray device in the line is actuated, and then, the off-line checking is made by a gas temperature alarm device provided in this spray device, a consumption alarm device and a pressure alarm device. If any abnormality is alarmed by either of these devices, the roll chock itself is overhauled, and after the re-assembly, the abnormal part is re-checked. The roll where no abnormal conditions are detected by this off-fine alarm device, i.e., the normal roll body such as the bearing and the seal on the roll chock side is assembled to the rolling mill.

10. 发明专利

JPH07100504A METHOD FOR SHIFTING WORK ROLL IN COLD ROLLING 失效
公开(公告)号：JPH07100504A
公开(公告)日：1995-04-18
申请号：JP24937393
申请日：1993-10-05
申请人： NIPPON STEEL CORP
发明人： FUJITA TAMIO , INABA MITSUNOBU , HIROWATARI ATSUSHI , HASHIMOTO ITARU
IPC分类号： B21B13/14 , B21B1/22
摘要： PURPOSE:To prevent the damage to the surface flaw of a rolling material by confirming the generation of the roll flaw in a rolling time and its position of a stand in the direction of the roll axis through a flaw detector, repeating the shifts of the work roll when this roll flaw is positioned in the plate way and removing the surface flaw. CONSTITUTION:The direction of the ground traces of the surface flaw of the roll is shifted from the rolling direction by shifting the work roll 1. The ground traces of the work roll 1 crush the projectives on the surface flaw through this shift, as a result, the roll flaw generated on the surface of the rolling material P can be gradated by this. The projectives of the ground traces on the work roll are crushed by the friction with the middle roll or the backup roll and this, too, acts on the reduction of the surface flaw. When the surface flaw occurs on the edge part of the rolling material P, the flaw part is pushed out by shifting the work roll to the external part of the plate way to prevent the damage. In this way, the roll flaw on the surface of rolling material can be pushed out to the external part of the roll width to prevent the damage.

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