JPH04231150A - Treating device for continuous cast thin slab - Google Patents
Treating device for continuous cast thin slabInfo
- Publication number
- JPH04231150A JPH04231150A JP40917390A JP40917390A JPH04231150A JP H04231150 A JPH04231150 A JP H04231150A JP 40917390 A JP40917390 A JP 40917390A JP 40917390 A JP40917390 A JP 40917390A JP H04231150 A JPH04231150 A JP H04231150A
- Authority
- JP
- Japan
- Prior art keywords
- thin slab
- finish rolling
- continuous casting
- thin
- slab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 230000001590 oxidative effect Effects 0.000 claims abstract description 9
- 238000009749 continuous casting Methods 0.000 abstract description 12
- 238000010438 heat treatment Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 230000003750 conditioning effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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
- B21B1/46—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 metal immediately subsequent to continuous casting
- B21B1/463—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 metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- 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
- B21B2045/006—Heating the product in vacuum or in inert atmosphere
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、薄スラブの連続鋳造か
ら製品巻取りに至る処理プロセスに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to processing processes ranging from continuous casting of thin slabs to product winding.
【０００２】0002
【従来の技術】従来から、例えば特開平１−８３３５２
号公報に開示されているように、圧延工程の低減を図り
、双キャスティングベルトによる薄スラブの連続鋳造を
行い、後工程として仕上げ圧延を行って所定の厚みと表
面状態を均質化したのちコイル状に巻き取る方式が採用
されている。[Prior Art] Conventionally, for example, Japanese Patent Application Laid-Open No. 1-83352
As disclosed in the publication, in order to reduce the number of rolling steps, thin slabs are continuously cast using twin casting belts, finish rolling is performed as a post-process to homogenize the predetermined thickness and surface condition, and then coiled A winding method is adopted.
【０００３】ところが、この方式によって得られた肉薄
スラブ連続鋳造片は比較的肉厚が薄いため仕上げ圧延段
階における圧下比を大きく取ることができず、そのため
、良好な表面状態を得られないという欠点がある。[0003] However, since the continuous thin slab cast piece obtained by this method has a relatively thin wall thickness, it is not possible to obtain a large rolling reduction ratio in the finish rolling stage, and as a result, it has the disadvantage that a good surface condition cannot be obtained. There is.
【０００４】また、比表面積が増加した分だけ最終仕上
げ段階でスケールとして除去する必要があり、その分だ
け歩留りが低下するという問題があった。[0004] Furthermore, it is necessary to remove the increased specific surface area as scale in the final finishing step, which causes a problem in that the yield decreases by that amount.
【０００５】[0005]
【発明が解決しようとする課題】本発明において解決す
べき課題は、薄スラブの連続鋳造から製品巻取りに至る
処理プロセスにおける仕上げ圧延の圧下率を小さくする
必要性から来る問題を解消して、従来の圧延薄板と同等
の表面状態を有する薄板を連続鋳造によって得た薄スラ
ブから製造する処理装置を提供することにある。OBJECTS TO BE SOLVED BY THE INVENTION The problem to be solved by the present invention is to solve the problem caused by the need to reduce the reduction ratio in finish rolling in the processing process from continuous casting of thin slabs to product winding. It is an object of the present invention to provide a processing device for producing a thin plate having a surface condition equivalent to that of a conventional rolled thin plate from a thin slab obtained by continuous casting.
【０００６】[0006]
【課題を解決するための手段】本発明は、連続鋳造薄ス
ラブを仕上げ圧延する設備において、仕上げ圧延機の前
にレベラによる表面調整を行った後、非酸化性雰囲気中
での加熱処理を行うための設備を配置したことを特徴と
する。[Means for Solving the Problems] The present invention provides, in equipment for finish rolling continuously cast thin slabs, surface conditioning with a leveler before the finish rolling mill, followed by heat treatment in a non-oxidizing atmosphere. It is characterized by the fact that it is equipped with facilities for
【０００７】このレベラによる表面調整を行う前に、多
段圧延機による厚み調整を行うこともできる。[0007] Before performing surface adjustment using this leveler, thickness adjustment may be performed using a multi-high rolling mill.
【０００８】表面調整を行うレベラーとしては、通常レ
ベラーとして用いられるものと同等かもしくはそれ以上
の能力を有する方がよい。レベラーによる曲げ加工を行
うと表面性状の改善となると同時にスケールも除去でき
る効果もある。[0008] It is preferable that the leveler for surface conditioning has an ability equal to or greater than that of a leveler normally used. Bending using a leveler has the effect of improving surface properties and removing scale.
【０００９】[0009]
【作用】レベラーによる表面調整を行った後、非酸化性
雰囲気中での加熱によって、結晶粒の微細化と共に均一
化が行われ、それに続く仕上げ圧延の圧下率が小さくと
も通常の圧延板の仕上げ圧延と同程度の表面の均一性と
光沢を得ることが可能となる。[Effect] After surface conditioning with a leveler, heating in a non-oxidizing atmosphere makes the grains finer and more uniform, resulting in a normal rolled plate finish even if the rolling reduction in the subsequent finish rolling is small. It becomes possible to obtain surface uniformity and gloss comparable to rolling.
【００１０】この薄スラブ連続鋳造板の、結晶粒の微細
化と共に均一化のための加熱温度は図１に示すように、
８００〜１４００℃で５分〜３時間加熱することによっ
て達成され、また、この熱処理による効果を顕著ならし
めるためには、図２に示すように、レベラーによる平坦
化加工の前に多段圧延機による５〜３０％程度の圧下率
の下での圧延を施すのが良い。[0010] The heating temperature for making the crystal grains finer and more uniform in this continuously cast thin slab plate is as shown in Fig. 1.
This is achieved by heating at 800 to 1400°C for 5 minutes to 3 hours, and in order to make the effect of this heat treatment noticeable, as shown in Figure 2, before flattening with a leveler, a multi-high rolling mill is used. It is preferable to perform rolling at a rolling reduction of about 5 to 30%.
【００１１】したがって、通常の場合、連続鋳造薄スラ
ブ−多段圧延機による圧延−切断−レベラによる表面調
整−無酸化炉による加熱−仕上げ圧延−高速シャー−捲
取りという工程が採用される。[0011] Therefore, normally, the following steps are adopted: continuous casting thin slab, rolling with a multi-stage rolling mill, cutting, surface conditioning with a leveler, heating with a non-oxidizing furnace, finishing rolling, high-speed shearing, and winding.
【００１２】0012
【実施例】図３は本発明による連続鋳造薄スラブ鋳造片
の連続処理装置の配置例を示す図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 is a diagram showing an example of the arrangement of a continuous processing apparatus for continuous casting thin slab cast pieces according to the present invention.
【００１３】同図において、１は例えば双キャスティン
グベルトによる連続鋳造装置を示す。この連続鋳造装置
１に続いて、２連のインラインリダクション装置２、シ
ャー３、レベラー４，無酸化炉５が配置され、最終ステ
ップに２連の四段仕上圧延機６と高速シャー７、それに
巻取機８が配置されている。In the figure, reference numeral 1 indicates a continuous casting apparatus using, for example, twin casting belts. Following this continuous casting device 1, two in-line reduction devices 2, a shear 3, a leveler 4, and a non-oxidizing furnace 5 are arranged, and in the final step, two four-high finishing mills 6, a high-speed shear 7, and a winding A removing machine 8 is arranged.
【００１４】同図において、レベラー４と無酸化炉５と
は一体的に形成されており、無酸化炉５の不活性ガス雰
囲気がレベラー４の処理雰囲気として形成されている。In the figure, a leveler 4 and a non-oxidizing furnace 5 are integrally formed, and the inert gas atmosphere of the non-oxidizing furnace 5 is formed as a processing atmosphere for the leveler 4.
【００１５】[0015]
【発明の効果】本発明によって以下の効果を奏すること
ができる。[Effects of the Invention] The following effects can be achieved by the present invention.
【００１６】■ 連続鋳造によって得た薄スラブにお
いても仕上げ圧延による良好な表面品質が得られる。[0016] Even in thin slabs obtained by continuous casting, good surface quality can be obtained by finish rolling.
【００１７】■ スケール生成が減少し、歩留りが向
上する。[0017] Scale formation is reduced and yield is improved.
【００１８】■ 工程として通常仕上げ圧延機入側に
配置している高圧水によるスケール除去工程が省略でき
ることにより、処理スラブの加熱温度を下げることがで
き、消費熱エネルギーを低減できる。(2) Since the scale removal step using high-pressure water, which is normally placed at the entrance of the finishing rolling mill, can be omitted, the heating temperature of the treated slab can be lowered, and the thermal energy consumed can be reduced.
【図１】非酸化性雰囲気中での加熱条件と結晶粒微細化
との関係を示す図である。FIG. 1 is a diagram showing the relationship between heating conditions in a non-oxidizing atmosphere and crystal grain refinement.
【図２】多段圧延機による圧下率とスケール除去率との
関係を示す図である。FIG. 2 is a diagram showing the relationship between rolling reduction and scale removal rate by a multi-high rolling mill.
【図３】本発明による連続鋳造薄スラブ鋳造片の連続処
理装置の配置例を示す図である。FIG. 3 is a diagram showing an example of the arrangement of a continuous processing apparatus for continuous casting thin slab cast pieces according to the present invention.
１ 連続鋳造装置 ２ インラインリダクション装置 ３ シャー ４ レベラー ５ 無酸化炉 ６ 仕上圧延機 ７ 高速シャー ８ 巻取機 1 Continuous casting equipment 2 Inline reduction device 3 Shah 4 Leveler 5 Non-oxidation furnace 6 Finishing rolling mill 7 High speed shear 8 Winder
Claims (1)
化性雰囲気炉を配置した連続鋳造薄スラブの処理装置。1. A processing device for continuously cast thin slabs, in which a leveler device and a non-oxidizing atmosphere furnace are arranged in front of a finishing rolling mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40917390A JPH04231150A (en) | 1990-12-28 | 1990-12-28 | Treating device for continuous cast thin slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40917390A JPH04231150A (en) | 1990-12-28 | 1990-12-28 | Treating device for continuous cast thin slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04231150A true JPH04231150A (en) | 1992-08-20 |
Family
ID=18518530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP40917390A Withdrawn JPH04231150A (en) | 1990-12-28 | 1990-12-28 | Treating device for continuous cast thin slab |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04231150A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8479550B2 (en) | 2005-11-09 | 2013-07-09 | Siemens Vai Metals Technologies Gmbh | Method for the production of hot-rolled steel strip and combined casting and rolling plant for carrying out the method |
-
1990
- 1990-12-28 JP JP40917390A patent/JPH04231150A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8479550B2 (en) | 2005-11-09 | 2013-07-09 | Siemens Vai Metals Technologies Gmbh | Method for the production of hot-rolled steel strip and combined casting and rolling plant for carrying out the method |
| EP1951451B2 (en) † | 2005-11-09 | 2017-01-25 | Primetals Technologies Austria GmbH | Method for producing a hot-rolled steel strip and combined casting and rolling installation for carrying out the method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980312 |