WO2000013812A1 - Laminoir a bandes a chaud - Google Patents
Laminoir a bandes a chaud Download PDFInfo
- Publication number
- WO2000013812A1 WO2000013812A1 PCT/JP1999/004822 JP9904822W WO0013812A1 WO 2000013812 A1 WO2000013812 A1 WO 2000013812A1 JP 9904822 W JP9904822 W JP 9904822W WO 0013812 A1 WO0013812 A1 WO 0013812A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rolling mill
- mill
- sheet
- hot rolling
- roll
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B13/023—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
- B21B13/142—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0057—Coiling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/02—Roll dimensions
- B21B2267/06—Roll diameter
- B21B2267/065—Top and bottom roll have different diameters; Asymmetrical rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2269/00—Roll bending or shifting
- B21B2269/12—Axial shifting the rolls
- B21B2269/14—Work rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/12—End of product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
Definitions
- the present invention relates to a hot rolling mill that enables a thin plate (steel plate) having a uniform thickness to be manufactured smoothly.
- the above-mentioned crown is a phenomenon in which the vicinity of the center of the amplitude becomes thicker due to the bending deformation of the roll, and the edge drop is a portion that sandwiches the plate (the portion that presses against the plate) and a portion that does not sandwich the plate (the width of the plate).
- This is a phenomenon in which, due to the formation of an arc-shaped step on the roll surface at the boundary with the outer edge of the roll, a sharp gradient is formed at both ends of the plate so that the wall thickness decreases outward in an arc shape. .
- drawing is a phenomenon in which the tail end of a plate, which becomes unstable because tension is not applied between the rolling mills, is bent by hitting a side guide, etc., and enters between the rolling mill rolls in a bent state. is there. If crown edge drop occurs, the dimensional accuracy of the sheet thickness decreases, and if squeezing occurs, there is a problem that the roll is damaged and the roll must be polished again. become.
- the present invention suppresses the generation of crowns and edge drops and prevents the drawing force from being generated at the tail end even when producing a thin plate having a thickness of about 1.2 mm or less, and has a simple structure. It is an object to provide a cold rolling mill.
- the hot rolling mill for a thin plate according to the present invention includes a finishing rolling mill configured by a former stage and a latter stage,
- the front stage is composed of two or more stands of C V C mill or pair cross mill,
- the latter stage is composed of two or more stands of different diameter roll mill
- the CVC mill referred to in (1) above is a known rolling mill that includes a roll that continuously changes its outer diameter in the axial direction and that can move in the axial direction (CVC roll).
- CVC roll continuously changes its outer diameter in the axial direction and that can move in the axial direction
- a paired cross mill means that a pair of work rolls and a backup roll are placed at the same time, not in parallel, but in a cross shape that is closest to the center and near the center.
- a known rolling mill whose angle (such as angle) can be changed. All of these rolling mills have the ability to change the roll gap shape.
- the CVC roll having the outer diameter change as described above is moved in the axial direction, and in the case of a pair cross mill, the cross-shaped holes arranged as described above are used.
- the shape of the roll gap can be changed.
- such a mill has a greater ability to change the shape of the roll gap as compared to a means such as simply performing roll bending.
- the above-mentioned different diameter roll mill refers to a rolling mill in which the diameter of a pair of single crawls is not the same and only a large-diameter work roll is rotationally driven.
- the deformed roll mill firstly, one work opening has a small diameter, so that the reduction amount is large even with a small rolling force, and the shear force is applied to the rolled material by driving only the large diameter work roll. Since it can work, it is easy to increase the rolling reduction compared to a general rolling mill in which the diameters of the work rolls are both large (the same diameter).
- the rolling mill has the same rolling reduction as each of those rolling mills. It can be realized. Therefore, it can be said that the above-mentioned effect can be exhibited and a sufficient rolling reduction can be achieved even when the stand is compactly arranged with a small number of stands.
- the deformed roll mill can be constructed by only making minor modifications (that is, changing one of the rolls to a smaller diameter) to a general rolling mill having both large work roll diameters. If there is an existing rolling mill that can be diverted, the hot rolling mill of the present invention can be configured simply and at low cost.
- the drawing force is simultaneously generated at the tail end, and the frequency is reduced. be able to. It is based on the effects of a) to c) below.
- Means for preventing this can be arranged.
- Means for preventing the temperature drop include a tunnel furnace, a sheet bar winding / unwinding device, and a sheet bar heater.
- the plate before being sent to the finishing mill has a low speed determined by the speed on the exit side of the finishing mill, so the residence time is long, and the temperature decreases as it moves backward (near the tail end). In the finishing mill, the temperature of the plate decreases as it goes to the later stage.
- the temperature of the sheet before being sent to the finishing mill is maintained or increased by the above-described means for preventing the temperature of the sheet from dropping. If the temperature of the plate is sufficiently high, the rolling pressure required for finish rolling is lower than it would otherwise be. Therefore, the above means prevents the temperature of the plate from dropping.
- the finish rolling (particularly, the subsequent stage) can be performed at a low rolling pressure.
- stable rolling can be performed without a change in rolling load. Therefore, it is possible to effectively suppress the generation of the edge drop and the drawing force.
- FIG. 1a is a system diagram of a hot rolling mill according to an embodiment of the present invention.
- FIG. 1b is a front view schematically showing a main part of the CVC mill, as viewed from the line bb in FIG. 1a.
- FIG. 1c is a diagram showing a state in which the work roll is displaced in the axial direction and the roll gap force is changed in FIG. 1b.
- FIG. 1d is a detailed view of a d part in FIG. 1a, and is a side view schematically showing a main part of the roll mill of different diameter.
- FIG. 2a is a system diagram of a hot rolling mill according to another embodiment of the present invention.
- FIG. 2B is a system diagram of a hot rolling mill according to still another embodiment of the present invention.
- FIG. 2c is a system diagram of a hot rolling mill according to another embodiment of the present invention.
- FIG. 3 shows a pair cross mill.
- FIG. 4 is a graph showing the temperature of the sheet at the entry side of the finishing mill.
- FIG. 1a shows the entire hot rolling mill A according to one embodiment
- FIG. 1b shows a pair of single crawls 31 of the CVC mill of the hot rolling mill A shown in FIG. 1a
- a and 31b are schematically shown (see b-b arrow in Fig. la).
- FIG. 1b shows the change of the outer diameter of the work roll is exaggerated.
- FIG. 1c shows a state in which the crawl is displaced in the axial direction and the roll gap changes.
- Fig. Id schematically shows the different-diameter roll mill 32 in the hot rolling mill A in Fig. 1a (details of a part d in Fig. 1a are shown).
- the following equipment is arranged in the hot rolling mill A.
- the heating furnace 1 is located in the most upstream part (to the left of Fig. La), followed by a roughing mill 10 power.
- the heating furnace 1 is a means of heating a continuous slab (slab) as a material to about 1200 ° C, and the roughing mill 10 reduces the thickness of the heated slab to about 30 mm.
- the rough rolling mill 10 one stand is schematically shown in the figure. In practice, a plurality of stands may be arranged. Downstream of the rough rolling mill 10, a finishing rolling mill 30 composed of six stands is arranged as shown in the figure, and a roller 40 for rolling a rolled plate is installed ahead of the finishing rolling mill 30.
- This hot rolling mill A has the following configuration so that even thin steel plates with a thickness of 1.2 mm or less (especially 1.0 mm or less) can be produced smoothly with high shape accuracy. Is adopted.
- the three stands 31 A, 31 B, and 31 C that constitute the former stage 31 of the finishing machine 30 are so-called CVC mills (mills that continuously change diameter). It is configured. That is, as shown in FIG. 1a, they are configured as a quadruple rolling mill composed of single crawls 31a, 31b and back at flors 31c, 31d.
- the work rolls 31a and 31b of each stand are provided with a crown (CVC, that is, a continuous change in diameter) as shown in Fig. 1b.
- the work rolls 31a and 31b can be simultaneously moved in opposite axial directions as shown in Fig. 1c.
- the three stands 32 A, 32 B and 32 C constituting the latter stage 32 of the finishing mill 30 are configured as so-called different diameter roll mills. That is, they are configured as a quadruple rolling mill composed of single crawlers 32a and 32b and backup rolls 32c and 32d as shown in Fig. 1a. As the work rolls 32a and 32b of each stand, those having different diameters are used as shown in Fig. 1d. Then, of the work rolls 32a and 32b, only the lower large-diameter roll 32b is rotationally driven by a motor or the like (not shown), and the upper small-diameter roll 32a is rotated. It is free to apply driving force to it.
- a known crawl bender (not shown) is attached to each stand, and the work rolls 32a and 32b are bent.
- These three stands 32 A, 32 B, and 31 C as roll mills of different diameters have one (upper) work roll 32 a having a smaller diameter and the other (lower) single crawl 3 2 b only. Since a shear force acts on the plate X to drive the plate, and the upper hole has a small diameter, it is possible to perform rolling at a sufficient rolling reduction even at a relatively low rolling pressure.
- the hot rolling mill A including the six-stand finishing rolling mill 30 can produce a plate having a high shape accuracy with suppressed crown and edge drop.
- a steel plate having a thickness of 1.2 mm and a width of 122 mm or 1.0 mm and a width of 100 mm In any case of producing 0 mm steel sheet, the average crown value at a position 25 mm from the edge can be about 15 m, and the maximum value can be about 30 m.
- the hot rolling mill B shown in FIG. 2A has a tunnel furnace 21 provided between the final stand of the rough rolling mill 10 and the first stand 31A of the finishing rolling mill 30.
- the tunnel furnace 21 is a tunnel-shaped furnace along the plate pass line, and can heat the plate by a heating means (burner or the like) (not shown) disposed inside.
- a heating means burner or the like
- the tunnel furnace 21 is installed to prevent the temperature from dropping. By preventing the temperature of the plate from lowering, the rolling pressure required for finish rolling can be reduced as compared with the case where the temperature is not lowered. In this way, the rolling pressure can be reduced, and the rolling pressures at the front end and the tail end can be made almost equal.
- the rolling pressure at 2 C can be set quite low, and the occurrence of edge drop and drawing can be further suppressed. Since the tail end of the sheet usually has the largest temperature drop width, the tunnel furnace 21 has a great effect of suppressing the occurrence of drawing. In this hot rolling mill B (and hot rolling mills C and D described later) However, similarly, the frequency of drawing can be further reduced than in the case of the hot rolling mill A described above. 9
- this hot rolling mill B as shown in FIG. 2A, a total of seven stands are arranged as the finishing rolling mill 30. That is, although the three stands 32 A, 32 B and 32 C of the latter stage 32 were formed as roll mills having different diameters, it is the same as the hot rolling mill A in FIG. 1 a, but from the CVC roll shown in FIG. 1 b.
- the former stage 31 is different from the rolling mill A in that four stages 31 A, 31 B, 31 C, and 31 D are provided.
- the number of rolling mills (stands) in the finish rolling mill 30 may be appropriately changed according to the thickness of the sheet, the type of steel, the production speed, and the like, similarly to the number of stands in the rough rolling mill 10.
- the stand of the former stage 31 in the finishing mill 30 can be a known pair cross mill 36 shown in FIG. 3, which can change the roll gap shape.
- the pair cloth mill 36 has a pair of work rolls 36a, 36b and backup rolls 36c, 36d, which are not arranged in parallel, but are arranged in a cross shape (cross shape) that is closest to the center and not at the center. This is a rolling mill that can change the mutual positional relationship (angle, etc.).
- Such a change is also possible for the following hot rolling mills C and D shown in FIGS. 2b and 2c and hot rolling mill A shown in FIG.
- a sheet bar winding / unwinding device 22 is provided between the final stand of the rough rolling mill 10 and the foremost stand 31A of the finishing rolling mill 30.
- Winding * Unwinding device 22 A device for winding and rewinding a sheet (sheet bar), for example, a device marketed by Steltech Ltd. (Canada) under the trade name Coilbox. Taking into account that the temperature of the sheet before entering the finishing mill 30 tends to drop as described above, the temperature drop is reduced by winding a long sheet into a coil, and the wound sheet is fed again. To the finishing mill 30. As a result, when the temperature drop of the sheet is reduced, the rolling pressure required for finish rolling can be reduced in the same manner as described above, and the occurrence of edge drop and drawing can be effectively prevented.
- the hot rolling mill D shown in FIG. 2C is one in which a sheet bar heater 23 is provided in front of the finishing rolling mill 30 following the winding / unwinding device 22 of FIG.
- the sheet heater 23 is a means for heating the leading end and the tail end of the plate with a burner or the like. Measure the temperature at the tip and tail. Aperture occurs at the tail end of the plate When the sheet bar heater 23 heats the tail end of the plate, the rolling pressure in that portion can be effectively reduced, and the rate of drawing can be greatly reduced.
- the hot rolling mill for a thin plate according to the present invention has the following effects. That is,
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99940680A EP1033182A4 (en) | 1998-09-08 | 1999-09-06 | HOT STRIP MILL |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10253161A JP2933923B1 (ja) | 1998-09-08 | 1998-09-08 | 薄板の熱間圧延機 |
JP10/253161 | 1998-09-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000013812A1 true WO2000013812A1 (fr) | 2000-03-16 |
Family
ID=17247391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/004822 WO2000013812A1 (fr) | 1998-09-08 | 1999-09-06 | Laminoir a bandes a chaud |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1033182A4 (ja) |
JP (1) | JP2933923B1 (ja) |
KR (1) | KR100396012B1 (ja) |
CN (1) | CN1126613C (ja) |
TW (1) | TW425316B (ja) |
WO (1) | WO2000013812A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10102821A1 (de) * | 2001-01-23 | 2002-07-25 | Sms Demag Ag | Walzwerk zur Herstellung planer Walzbänder mit gewünschter Bandprofilüberhöhung |
US7076983B2 (en) | 2001-03-16 | 2006-07-18 | Nakayama Steel Works, Ltd. | Apparatus and method for hot rolling |
KR20020093881A (ko) * | 2001-03-16 | 2002-12-16 | 가부시끼 가이샤 나까야마 세이꼬쇼 | 열간압연장치 및 열간압연방법 |
JP3413181B2 (ja) * | 2001-08-03 | 2003-06-03 | 川崎重工業株式会社 | 連続熱間圧延設備 |
DE10339191A1 (de) | 2003-08-22 | 2005-03-17 | Sms Demag Ag | Coilbox zwischen Vorstraße und Fertigstraße im Warmwalzwerk |
CN100450653C (zh) * | 2006-11-28 | 2009-01-14 | 中冶南方工程技术有限公司 | 防止0.4mm以下的薄板高速轧制工况下带钢颤动的方法 |
CN101992215B (zh) * | 2009-08-13 | 2012-07-04 | 宝山钢铁股份有限公司 | 一种cvc工作辊轴向移动控制方法 |
KR101253851B1 (ko) * | 2010-12-27 | 2013-04-12 | 주식회사 포스코 | 마무리압연에서 열연 후물재 에지 업 저감 방법 및 장치 |
DE102012004826A1 (de) * | 2012-03-08 | 2013-09-12 | Gm Global Technology Operations, Llc | Verfahren zur Herstellung von Profilleisten und Hohlprofilkörpern und Vorrichtung zur Durchführung des Verfahrens |
JP2014061528A (ja) * | 2012-09-20 | 2014-04-10 | Ihi Corp | 連続圧延設備 |
TWI551366B (zh) * | 2013-12-25 | 2016-10-01 | The use of round steel wire rolling forming thin steel sheet and steel fiber forming method | |
JP5854177B1 (ja) * | 2014-03-19 | 2016-02-09 | Jfeスチール株式会社 | 高炭素鋼の熱間圧延方法 |
EP3208673B1 (de) * | 2016-02-22 | 2019-06-05 | Primetals Technologies Austria GmbH | Inline-kalibrierung des walzspalts eines walzgerüsts |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5831242B2 (ja) * | 1980-03-17 | 1983-07-05 | 三菱重工業株式会社 | ペア−クロス式4段圧延機 |
JPS62137102A (ja) * | 1985-12-09 | 1987-06-20 | Nippon Steel Corp | 表面性状の良いチタン熱延板の製造方法 |
JPH0411281B2 (ja) * | 1980-10-15 | 1992-02-28 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62137102U (ja) * | 1986-02-24 | 1987-08-29 | ||
JPS62197209A (ja) * | 1986-02-25 | 1987-08-31 | Kobe Steel Ltd | 板材の熱間圧延におけるキヤンバ制御方法 |
JP2616917B2 (ja) * | 1987-01-24 | 1997-06-04 | 株式会社日立製作所 | ロールシフト圧延機による圧延方法 |
US5174144A (en) * | 1990-04-13 | 1992-12-29 | Hitachi, Ltd. | 4-high rolling mill |
JPH06106207A (ja) * | 1992-09-24 | 1994-04-19 | Kawasaki Steel Corp | 鋼片の連続熱間圧延設備 |
DE69613178T2 (de) * | 1995-07-10 | 2001-09-27 | Kawasaki Steel Corp., Kobe | Verfaren und Vorrichtung zum kontinuierlichen Warmbandfertigwalzen |
MY134084A (en) * | 1996-07-18 | 2007-11-30 | Jfe Steel Corp | Rolling method and rolling mill of strip for reducing edge drop |
-
1998
- 1998-09-08 JP JP10253161A patent/JP2933923B1/ja not_active Expired - Lifetime
-
1999
- 1999-09-06 KR KR10-2000-7004924A patent/KR100396012B1/ko not_active IP Right Cessation
- 1999-09-06 WO PCT/JP1999/004822 patent/WO2000013812A1/ja not_active Application Discontinuation
- 1999-09-06 CN CN99801542A patent/CN1126613C/zh not_active Expired - Fee Related
- 1999-09-06 EP EP99940680A patent/EP1033182A4/en not_active Withdrawn
- 1999-09-07 TW TW088115528A patent/TW425316B/zh not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5831242B2 (ja) * | 1980-03-17 | 1983-07-05 | 三菱重工業株式会社 | ペア−クロス式4段圧延機 |
JPH0411281B2 (ja) * | 1980-10-15 | 1992-02-28 | ||
JPS62137102A (ja) * | 1985-12-09 | 1987-06-20 | Nippon Steel Corp | 表面性状の良いチタン熱延板の製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1033182A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN1277568A (zh) | 2000-12-20 |
CN1126613C (zh) | 2003-11-05 |
EP1033182A1 (en) | 2000-09-06 |
JP2933923B1 (ja) | 1999-08-16 |
TW425316B (en) | 2001-03-11 |
KR100396012B1 (ko) | 2003-08-27 |
KR20010031851A (ko) | 2001-04-16 |
EP1033182A4 (en) | 2005-06-01 |
JP2000084601A (ja) | 2000-03-28 |
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