JPH02299701A - Hot working method for base material - Google Patents
Hot working method for base materialInfo
- Publication number
- JPH02299701A JPH02299701A JP12077089A JP12077089A JPH02299701A JP H02299701 A JPH02299701 A JP H02299701A JP 12077089 A JP12077089 A JP 12077089A JP 12077089 A JP12077089 A JP 12077089A JP H02299701 A JPH02299701 A JP H02299701A
- Authority
- JP
- Japan
- Prior art keywords
- base material
- cooling water
- base
- heat treatment
- treatment tank
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims description 15
- 239000000110 cooling liquid Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 29
- 239000002344 surface layer Substances 0.000 claims description 9
- 230000009466 transformation Effects 0.000 claims description 7
- 239000010953 base metal Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 239000000498 cooling water Substances 0.000 abstract description 21
- 238000002347 injection Methods 0.000 abstract description 11
- 239000007924 injection Substances 0.000 abstract description 11
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 238000009749 continuous casting Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005098 hot rolling Methods 0.000 abstract description 3
- 230000000171 quenching effect Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000010410 layer Substances 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- B21B45/02—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 for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、母材例えば連続鋳造片若しくは鋼塊等の熱間
加工法に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method for hot working base materials such as continuously cast pieces or steel ingots.
「従来の技術ｊ
高熱状態の鋼塊を、冷却液が流動する熱処理槽に浸漬し
、鋼塊表層部のみをＡｒｌ変態点以下に急冷した後、炉
内加熱を行うとともに成形加工を施す鋼塊熱間加工法は
、本件出願人によって開発され特公昭４９−７７７１号
公報により既に公知となっている。``Conventional technology j'' A steel ingot in which a highly heated steel ingot is immersed in a heat treatment tank in which a cooling liquid flows, and only the surface layer of the steel ingot is rapidly cooled to below the Arl transformation point, then heated in a furnace and subjected to forming processing. The hot working method was developed by the applicant and is already known from Japanese Patent Publication No. 7771/1983.
前記の鋼塊熱間加工法は、分塊圧延時の横割れを防止す
るとともに、高熱鋼塊の有する潜熱の有効利用を図るこ
とを目的としてなされたものであり、前記横割れの起点
が表面部にあることがら表層部の柱状晶組織を細分化し
、またオーステナイトも微細化させるため柱状晶の出て
いる表層部のみを急冷し、内部は高温のオーステナイト
状態に保つようにしたものである。そして、急冷の方法
として高温度の鋼塊を流動する冷却液中に短時間浸漬す
る方法を用いている。The above-mentioned steel ingot hot working method was developed with the aim of preventing transverse cracks during blooming and effectively utilizing the latent heat of the high-temperature steel ingot. In order to subdivide the columnar crystal structure in the surface layer and also refine the austenite, only the surface layer where the columnar crystals are exposed is rapidly cooled, while the interior is kept in a high-temperature austenite state. As a method of rapid cooling, a method is used in which a high-temperature steel ingot is immersed in a flowing cooling liquid for a short period of time.
［発明が解決しようとする課題」
しかしながら、前記の鋼塊熱間加工法における分塊圧延
時に連続鋳造片、鋼塊等の母材の特定の面にのみ横割れ
が発生するという問題点が生じた。[Problems to be Solved by the Invention] However, a problem arises in that transverse cracks occur only on a specific surface of the base material such as a continuously cast piece or steel ingot during blooming rolling in the above-mentioned steel ingot hot working method. Ta.
鋳型から抽出される母材は、生産性を図るた゛めに、原
則としていわゆるＦ面を底面にする姿勢で搬送及び各種
の加工が施される。Ｆ面は母材を生成する鋳型によって
規定されるもので、Ｆ面と対応する上面はＬ面と、Ｆ面
に続く両側面は８面及び８面と称せられる。In order to improve productivity, the base material extracted from the mold is generally transported and subjected to various processing with the so-called F side as the bottom surface. The F-plane is defined by the mold that produces the base material, and the upper surface corresponding to the F-plane is called the L-plane, and both side surfaces following the F-plane are called the 8-plane and the 8-plane.
前記した横割れはＦ面にのみ発生するものであって、こ
れは鋳型より抽出した高熱状態の母材を、冷却液が流動
する熱処理槽に浸漬保持する際、母材の表部に蒸気が気
泡状となって付着するが、特にＦ面は底面となるため該
蒸気が他のり、Ｓ、Ｎ即ち、蒸気が気泡状となって付着
することにより一種の断熱層を形成し、急冷の効果がＬ
面、８面及びＳｒＭ程及ばないで、Ｆ面に形成される急
冷の効果層が他の３面よりも薄いためである。The above-mentioned horizontal cracks occur only on the F side, and this is because when the highly heated base material extracted from the mold is immersed and held in a heat treatment tank in which a cooling liquid flows, steam is generated on the surface of the base material. The vapor adheres in the form of bubbles, but since the F side is the bottom surface, the vapor is absorbed by other substances. is L
This is because the quenching effect layer formed on the F-plane is thinner than on the other three planes, which is not as good as the F-plane, the 8-plane, and the SrM.
本発明は、前記した点に着目してなされ、たちので、母
材のＦ面に付着する蒸気を冷却液流を強制的に作用させ
ることで散逸させ、急冷効果を高めることにより、急冷
によって生成される効果層の深さを他の３面と同程度に
して、分塊圧延時に発生ずる横割れを防止できる母材の
熱間加工法を提供することを目的とするものである。The present invention has been made with attention to the above-mentioned points, and the vapor adhering to the F side of the base material is dissipated by forcing a flow of cooling liquid to enhance the quenching effect, thereby generating heat generated by quenching. The object of the present invention is to provide a method for hot working a base material that can prevent transverse cracking that occurs during blooming by making the depth of the effect layer similar to that of the other three sides.
［課題を解決するための手段」
前記目的を達成するための具体的手段は、高熱状態の母
材を、冷却液が流動する熱処理槽に浸漬し、母材表層部
のみをＡｒ＋変態点以下に急冷した後、炉内加熱を行う
とともに成形加工を施す母材作用させるようにしたこと
を特徴とするものである。[Means for solving the problem] A specific means for achieving the above object is to immerse the base material in a high temperature state in a heat treatment tank in which a cooling liquid flows, and bring only the surface layer of the base material below the Ar + transformation point. After quenching, the material is heated in a furnace and the base material to be formed is acted upon.
「作用」
前記具体的手段によれば、第１図に示すように冷却液が
流動する熱処理槽内へ浸漬保持された高熱状態の母材の
底面に対して冷却液流を強制的に作用させて、底面に付
着する蒸気を除去するとともに、母材表層部のみをＡｒ
ｌ変態点以下に急冷した後、炉内加熱を行って成形加工
を施す。"Action" According to the specific means, as shown in FIG. 1, a flow of cooling liquid is forced to act on the bottom surface of a highly heated base material that is immersed and held in a heat treatment tank in which a cooling liquid flows. In addition to removing the vapor adhering to the bottom surface, only the surface layer of the base material is
After being rapidly cooled to below the transformation point, it is heated in a furnace and shaped.
「実施例」 本発明の１実施例を添付図面に基づいて説明する。"Example" An embodiment of the present invention will be described based on the accompanying drawings.
第２図は、本発明に係る母材の熱間加工法の概略を連続
鋳造プロセスにより示したものである。FIG. 2 schematically shows a method of hot working a base material according to the present invention using a continuous casting process.
連続鋳造プラント１から生成された連続鋳造片（以下連
鋳片という）Ａは、切断機２により所定長に切断され、
熱処理槽１１内へ投入される。該熱処理槽１１では、後
記に詳述するが連鋳片Ａの表層部のみをＡｒｌ変態点以
下に急冷する熱処理を施すための冷却水を循環させる。A continuous cast piece (hereinafter referred to as a continuous cast piece) A produced by the continuous casting plant 1 is cut into a predetermined length by a cutting machine 2,
It is put into the heat treatment tank 11. In the heat treatment tank 11, cooling water is circulated for performing heat treatment to rapidly cool only the surface layer portion of the continuously cast piece A to below the Arl transformation point, which will be described in detail later.
続いて均熱炉３に装入し、連鎖片Ａの内部に保有する潜
熱を活用して圧延温度に加熱し、分塊圧延機４により圧
延加工を行う。Subsequently, the chain piece A is charged into a soaking furnace 3, heated to a rolling temperature by utilizing the latent heat held inside the chain piece A, and rolled by a blooming mill 4.
第３〜５図は、連鋳片の熱間加工に用いる熱処理槽１１
を示したものである。Figures 3 to 5 show a heat treatment tank 11 used for hot working of continuous slabs.
This is what is shown.
熱処理槽１１の上縁部外周には、オーバフローする冷却
水を集める集水樋１２を周設し、２本の排水管１３．１
４を連結する。さらに一方の側壁１５には、それぞれバ
タフライ弁１６を装着した３本の給水管１７を配管する
。熱処理槽１１内には、高熱状態の連鋳片Ａを受ける受
は架台１８を６本の支持脚１９により熱処理槽１１の底
面上に固定する。受は架台１８は連鋳片Ａをその長手方
向と直交する２個所で受けるように四角形の枠状とする
とともに、その受は面２０の断面形状を円若しくは三角
形等として凸部２０ａを形成する。A water collection gutter 12 is provided around the outer periphery of the upper edge of the heat treatment tank 11 to collect overflowing cooling water, and two drainage pipes 13.1
Connect 4. Furthermore, one side wall 15 is provided with three water supply pipes 17 each equipped with a butterfly valve 16. Inside the heat treatment tank 11, a pedestal 18 is fixed to the bottom surface of the heat treatment tank 11 by six support legs 19, and a support for receiving the continuously cast pieces A in a highly heated state is provided. The receiver frame 18 has a rectangular frame shape so as to receive the continuous slab A at two locations perpendicular to its longitudinal direction, and the receiver has a surface 20 with a circular or triangular cross-sectional shape to form a convex portion 20a. .
受は架台１８上には、連鋳片Ａを２本平行にして載せる
ことができ、連鋳片Ａが片寄って載せられることのない
ように、目印板２１を対応する２個の受は面２０の中央
部に立てる。前記受は面２０の位置は熱処理槽１１の深
さの約１／２の位置に設ける。The two supports can be placed on the stand 18 in parallel with each other, and in order to prevent the continuous cast pieces A from being placed on one side, the two corresponding supports are placed on the surface of the mark plate 21. Stand in the center of 20. The surface 20 of the receiver is provided at a position approximately 1/2 the depth of the heat treatment tank 11.
さらに、前記受は架台１８の下面には、２本の冷却水噴
射管２２を配管し、そ９噴射口２３を受は面２０上に載
る連鋳片Ａの底面に対応させて開口する。該２本の冷却
水噴射管２２は、熱処理槽１１の側壁１５から外部に導
き、冷却水噴射用給水管２４に連結する。Furthermore, two cooling water injection pipes 22 are installed on the lower surface of the pedestal 18, and the injection ports 23 thereof are opened in correspondence with the bottom surface of the continuous slab A placed on the surface 20 of the receiver. The two cooling water injection pipes 22 are guided to the outside from the side wall 15 of the heat treatment tank 11 and connected to a water supply pipe 24 for cooling water injection.
その他、熱処理槽１１の集水樋１２上には、長手方向の
２個所及び短手方向の中央部に、それぞれ矢印板２５を
都合６個設けて連鋳片投入時の目印とする。また、２６
はバタフライ弁２７を設けた排水管であって、前記排水
管１４に接続させ、掃除とか点検時に熱処理槽１１から
冷却水を抜き取る。In addition, on the water collection gutter 12 of the heat treatment tank 11, a total of six arrow boards 25 are provided at two locations in the longitudinal direction and at the center in the transverse direction to serve as marks when continuously charging slabs. Also, 26
is a drain pipe provided with a butterfly valve 27, which is connected to the drain pipe 14 to drain cooling water from the heat treatment tank 11 during cleaning or inspection.
前記構成の熱処理槽１１は、底面に設けた固定脚２８に
より熱処理ヤードに設置する。The heat treatment tank 11 having the above structure is installed in a heat treatment yard using fixed legs 28 provided on the bottom surface.
以下、本実施例の作動を説明する。The operation of this embodiment will be explained below.
連続鋳造プラント１から生成され、切断装置２で所定長
さに切断された連鋳片Ａは、表面温度８００〜９００℃
の高熱状態であって、前記連続鋳造の鋳型によって規定
されるいわゆるＦ面を底面とし、Ｆ面を上面、Ｎ面、８
面をそれぞれ側面とする姿勢でトングクレーン（図示せ
ず）により、前記熱処理槽１１内へ投入される。熱処理
槽１１内の冷却水は、給水管１７から給水されるととも
に、冷却水噴射管２２の噴射口２３から噴射されている
から絶えず流動していて、熱処理槽１１の上縁部を越え
てオーバフローする冷却水は、集水樋１２により集めら
れて排水管１３．１４により排水される。排水した冷却
水はピット等に溜めた後、給水管１７から熱処理槽１１
に戻して循環させ再使用する。高熱状態の連鋳片Ａは、
前記目印板２１及び矢印板２５を目標にしてトングクレ
ーンを操作し、受は架台１８の受は面２０上に載せられ
る。この時、連鋳片Ａの表面には蒸気が気泡状となって
付着するが、流動する冷却水により除去される。また、
従来除去が困難であった底面となるＦ面に付着した蒸気
は、前記冷却水噴射管２２の噴射口２３から噴射される
冷却水の噴射流により強制的に散逸除去される。The continuous cast piece A produced by the continuous casting plant 1 and cut into a predetermined length by the cutting device 2 has a surface temperature of 800 to 900°C.
The so-called F-plane defined by the continuous casting mold is the bottom surface, the F-plane is the top surface, the N-plane, and the
They are placed into the heat treatment tank 11 by a tong crane (not shown) with their respective sides facing up. The cooling water in the heat treatment tank 11 is supplied from the water supply pipe 17 and is injected from the injection port 23 of the cooling water injection pipe 22, so it is constantly flowing and overflows beyond the upper edge of the heat treatment tank 11. The cooling water is collected by a collection gutter 12 and drained by a drain pipe 13,14. After the drained cooling water is stored in a pit etc., it is sent from the water supply pipe 17 to the heat treatment tank 11.
to be recycled and reused. Continuous slab A in a high temperature state is
The tong crane is operated with the mark plate 21 and the arrow plate 25 as targets, and the receiver of the pedestal 18 is placed on the surface 20. At this time, steam adheres to the surface of the continuous slab A in the form of bubbles, but is removed by the flowing cooling water. Also,
The steam adhering to the F surface, which is the bottom surface, which has been difficult to remove in the past, is forcibly dissipated and removed by the jet stream of cooling water injected from the jet port 23 of the cooling water jet pipe 22.
尚、２本の冷却水噴射管２２は、３本の給水管１７のう
ちの１本に、２股の接続管を用いて接続させることもで
きる。Note that the two cooling water injection pipes 22 can also be connected to one of the three water supply pipes 17 using a bifurcated connecting pipe.
熱処理槽１１内への浸漬時間は、鋼種、水温。The immersion time in the heat treatment tank 11 depends on the steel type and water temperature.
冷却水量及び生成する急冷効果層の厚さ等により異なる
が、いずれにしても表層部のみをＡｒ＋変態点以下に降
下させ急冷する１表層部がＡｒ＋変態点以下に急冷され
た連鋳片Ａは、再びトングクレーンにより引き上げられ
、連鋳片内部の自然により、順次温度が回復してその表
面部の温度は約７００℃にまで上昇する。続いて、この
連鋳片Ａを均熱炉３内に装入し、所定時間の加熱処理を
施したのち抽出して、分塊圧延機４により圧延加工を行
う。Although it varies depending on the amount of cooling water and the thickness of the quenching effect layer formed, in any case, only the surface layer is lowered to below the Ar+ transformation point and quenched. Then, it is lifted up again by the tong crane, and the temperature inside the continuously cast slab gradually recovers to about 700°C. Subsequently, this continuous slab A is charged into a soaking furnace 3, subjected to heat treatment for a predetermined time, extracted, and rolled by a blooming mill 4.
この圧延加工後、横割れの発生を調査したところ、従来
Ｆ面のみに発生した横割れ不良を皆無とすることができ
た。After this rolling process, we investigated the occurrence of transverse cracks and found that there were no transverse crack defects that conventionally occurred only on the F-plane.
尚、前記熱処理槽１１から引き上げられた連鋳片Ａは、
直接熱間鍛造加工を施される場合もある。Incidentally, the continuous slab A pulled up from the heat treatment tank 11 is as follows:
In some cases, it is directly hot forged.
前記実施例は、冷却水を用いて急冷を行う態様で説明し
たが、冷却液として油を用いて急冷することも、勿論可
能である。Although the embodiment described above has been described with reference to a mode in which quenching is performed using cooling water, it is of course possible to perform quenching using oil as the cooling liquid.
「発明の効果」
本発明は、前記具体的手段及び作用の説明で明らかにし
たように、冷却液が流動する熱処理槽内蒸気を除去する
とともに、母材表層部のみをＡ ｒ １変態点以下に急
冷した後、炉内加熱を行って成形加工を施すようにした
母材の熱間加工法であるので、従来のように母材の底面
であるＦ面に付着する蒸気によって急冷効果が妨げられ
ることもなく、該底面の急冷の効果層の厚さを他の三面
と同程度として、熱間圧延時の横割れの発生を完全に除
去できる顕著な効果を有する。"Effects of the Invention" As clarified in the explanation of the above-mentioned specific means and effects, the present invention removes the steam in the heat treatment tank in which the cooling liquid flows, and reduces only the surface layer of the base material to an A r 1 transformation point or lower. This is a hot working method for the base material, in which the base material is rapidly cooled and then heated in a furnace to perform the forming process, so unlike conventional methods, the quenching effect is hindered by steam adhering to the F side, which is the bottom surface of the base material. By making the thickness of the quenching effect layer on the bottom surface comparable to that on the other three surfaces, it has a remarkable effect of completely eliminating the occurrence of transverse cracks during hot rolling.
添付図面は本発明の１実施例を示したもので。
第１図は作用を示した要部の拡大側面図、第２図は概要
工程図、第３図は熱処理槽の平面図、第４図は第３図１
−ｆ線切断正面図、第５１５１Ｉは第４図■−■線切断
側面図である。
１１ 、、、熱処理槽、 １７．、、給水管、 １８．
、。
受は架台、 ２０．、、受は面、 ２０ ａ 、、、凸
部、２２ 、、、冷却水噴射管、 ２３ 、、、噴射口
、 Ａ１．。
連続鋳造片。
第１図
第２図The accompanying drawings show one embodiment of the invention. Figure 1 is an enlarged side view of the main parts showing the action, Figure 2 is a schematic process diagram, Figure 3 is a plan view of the heat treatment tank, and Figure 4 is Figure 3.
5151I is a front view cut along the line -f, and 5151I is a side view cut along the line ■-■ in FIG. 11. Heat treatment tank 17. ,, water supply pipe, 18.
,. The receiver is a stand, 20. ,, Receiving surface, 20 a, , Convex portion, 22, , Cooling water injection pipe, 23, , Injection port, A1. . Continuously cast piece. Figure 1 Figure 2
Claims (1)
、母材表層部のみをＡｒ＿１変態点以下に急冷した後、
炉内加熱を行うとともに成形加工を施す母材の熱間加工
法において、 前記熱処理槽内へ浸漬保持した母材の底面に対して、冷
却液流を噴射等により強制的に作用させるようにしたこ
とを特徴とする母材の熱間加工法。[Claims] After immersing the highly heated base material in a heat treatment tank in which a cooling liquid flows, and rapidly cooling only the surface layer of the base material to below the Ar_1 transformation point,
In the hot working method of the base material, which is heated in a furnace and subjected to forming processing, a cooling liquid flow is forcibly applied to the bottom surface of the base material immersed and held in the heat treatment tank by spraying or the like. A hot working method for base metals characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12077089A JPH02299701A (en) | 1989-05-15 | 1989-05-15 | Hot working method for base material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12077089A JPH02299701A (en) | 1989-05-15 | 1989-05-15 | Hot working method for base material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02299701A true JPH02299701A (en) | 1990-12-12 |
Family
ID=14794574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12077089A Pending JPH02299701A (en) | 1989-05-15 | 1989-05-15 | Hot working method for base material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02299701A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05329505A (en) * | 1992-06-01 | 1993-12-14 | Kobe Steel Ltd | Method for preventing surface crack of low-alloy steel |
| JPH0673445A (en) * | 1992-08-27 | 1994-03-15 | Kobe Steel Ltd | Manufacture of steel material having little surface flaw |
| CN114247749A (en) * | 2020-09-24 | 2022-03-29 | 首要金属科技奥地利有限责任公司 | Combined casting and rolling plant and method for operating a combined casting and rolling plant |
-
1989
- 1989-05-15 JP JP12077089A patent/JPH02299701A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05329505A (en) * | 1992-06-01 | 1993-12-14 | Kobe Steel Ltd | Method for preventing surface crack of low-alloy steel |
| JPH0673445A (en) * | 1992-08-27 | 1994-03-15 | Kobe Steel Ltd | Manufacture of steel material having little surface flaw |
| CN114247749A (en) * | 2020-09-24 | 2022-03-29 | 首要金属科技奥地利有限责任公司 | Combined casting and rolling plant and method for operating a combined casting and rolling plant |
| EP3974072A1 (en) * | 2020-09-24 | 2022-03-30 | Primetals Technologies Austria GmbH | Casting roller composite system and method for operating the casting roller composite system |
| CN114247749B (en) * | 2020-09-24 | 2023-11-28 | 首要金属科技奥地利有限责任公司 | Combined casting and rolling installation and method for operating a combined casting and rolling installation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6250370B1 (en) | Method for water-cooling hot metal slabs | |
| ATE291980T1 (en) | METHOD FOR CONTINUOUS CASTING OF BLAMS, IN PARTICULAR THIN SLABES, AND A DEVICE FOR IMPLEMENTING SAME | |
| JPH02299701A (en) | Hot working method for base material | |
| JP5999294B2 (en) | Steel continuous casting method | |
| CN109570465B (en) | Method for producing 45-55t low alloy steel slab ingot by using water-cooling die casting crystallizer | |
| JPH02299702A (en) | Heat treating chamber for hot working of base material | |
| Roy et al. | Reduction in surface defect in continuous cast slab through intervention in process parameters | |
| JPS55110739A (en) | Method for cooling strip steel in continuous annealing process | |
| JPH09206899A (en) | Method for cooling continuous casting bloom | |
| CN102248251B (en) | Method for checking and finishing plate blank by using flame | |
| JPS55148761A (en) | Surface treatment of metallic material | |
| SU1696015A1 (en) | Method of producing thick-gauge plate | |
| JPS63168260A (en) | Hot working method for continuously cast billet | |
| US3687189A (en) | Method of the electroslag remelting of consumable electrodes | |
| JPH02228422A (en) | Method for removing primary scale from austenitic stainless steel slab | |
| US3890167A (en) | Method and apparatus for producing a casting having a satisfactory surface with a continuous casting operation | |
| Khosla | A fundamental understanding of clinking during the cooling and reheating of as-cast steel slabs | |
| SU984648A2 (en) | Method of secondary cooling of octahedral non-equi lateral steel ingot | |
| Ouyang et al. | Analysis of unqualified 12MnNiVR steel plate for crude oil storage tank | |
| JPS5932201B2 (en) | Hot rolling method for steel materials | |
| JP2003225742A (en) | Method for casting austenitic stainless steel excellent in surface characteristic and its cast slab | |
| SU1599330A1 (en) | Method of processing ladle residues of steel-melting slags | |
| CN115121776A (en) | Method for judging breakout of continuous casting longitudinal crack | |
| JP2004337985A (en) | Water tank for water cooling of billet | |
| Liangliang et al. | Investigation of longitudinal surface cracks in a continuous casting slab of high-carbon steel |