JPH02142646A - Casting roll for metal plate continuous casting machine - Google Patents

Casting roll for metal plate continuous casting machine

Info

Publication number
JPH02142646A
JPH02142646A JP29251188A JP29251188A JPH02142646A JP H02142646 A JPH02142646 A JP H02142646A JP 29251188 A JP29251188 A JP 29251188A JP 29251188 A JP29251188 A JP 29251188A JP H02142646 A JPH02142646 A JP H02142646A
Authority
JP
Japan
Prior art keywords
sleeve
shell
casting roll
arbor
metal plate
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.)
Granted
Application number
JP29251188A
Other languages
Japanese (ja)
Other versions
JPH0557064B2 (en
Inventor
Hiroshi Arai
宏 新井
Hirotaka Tanaka
博孝 田中
Junichi Sano
潤一 佐野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPON KINZOKU KOGYO KK
Nippon Metal Industry Co Ltd
Original Assignee
NIPPON KINZOKU KOGYO KK
Nippon Metal Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NIPPON KINZOKU KOGYO KK, Nippon Metal Industry Co Ltd filed Critical NIPPON KINZOKU KOGYO KK
Priority to JP29251188A priority Critical patent/JPH02142646A/en
Publication of JPH02142646A publication Critical patent/JPH02142646A/en
Publication of JPH0557064B2 publication Critical patent/JPH0557064B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637Accessories therefor
    • B22D11/0648Casting surfaces
    • B22D11/0651Casting wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

PURPOSE:To produce a uniform metal plate having only a little variation of plate thickness in plate width direction by forming inner structure of a casting roll to triple structure of shell, sleeve and arbor. CONSTITUTION:Plural cooling water passages 4 are arranged between the shell 1 and the sleeve 2 so as to have the structure, which heat from the molten metal does not conduct to the sleeve 2. At the same time, the shell 1 and the sleeve 2 are fixed with bolts 6 from inner face of the sleeve 2 so as to receive the thermal expanding force of the shell 1 to the sleeve 2. Further, in order to fasten the shell 1 and sleeve 2 with bolts 6 from the inner face of the sleeve 2, space 8 is arranged between the sleeve 2 and the arbor 3, and the sleeve 2 and the arbor 3 are fixed by using ribs 5 and/or disks 7, etc. By this method, expansions at center part and both end parts are uniformized, and as roll surface of barrel longitudinal direction can be made to linear, the continuously produced metal plate can be made to the product having flat and good quality.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は金属板連続鋳造機の鋳造ロールに関するもので
ある。更に詳しくは、鋳造ロールに発生するサーマルク
ラウンが胴長方向に中央部が凹となるようにした鋳造ロ
ールに関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a casting roll for a continuous metal plate casting machine. More specifically, the present invention relates to a casting roll in which a thermal crown generated on the casting roll has a concave central portion in the longitudinal direction of the body.

(従来技術とその問題点) 般に単ロール又は双ロールを使用した金属板連続鋳造方
法が知られている。これらの方法では溶融金属の熱が鋳
造ロールに伝熱されるため、鋳造ロールは外表面もしく
は内部から冷却されている。しかしながら伝熱された熱
の一部は鋳造ロールに蓄熱され、鋳造ロールの外表面お
よび内部の温度が上昇して、熱膨張が生じ、この結果、
鋳造ロールに胴長方向中央部が凸となる様なサーマルク
ラウンが形成される。このような鋳造ロールで製造され
た金属板は、板幅方向に対して板幅中央が凹となった断
面形状となり、板幅方向に板厚偏差が生じる。このこと
は、板としての品質を著しく害すると共に冷間圧延性を
も害し、しばしば冷間圧延が不可能となるなどの問題点
が生ずる。
(Prior art and its problems) Generally, continuous casting methods for metal plates using a single roll or twin rolls are known. In these methods, the heat of the molten metal is transferred to the casting roll, so that the casting roll is cooled from the outside or inside. However, some of the transferred heat is stored in the casting roll, increasing the temperature on the outside and inside of the casting roll, causing thermal expansion.
A thermal crown is formed on the casting roll so that the central part in the longitudinal direction of the body is convex. A metal plate manufactured using such a casting roll has a cross-sectional shape in which the center of the plate width is concave with respect to the plate width direction, and a deviation in plate thickness occurs in the plate width direction. This significantly impairs the quality of the plate and also impairs cold rolling properties, often causing problems such as cold rolling becoming impossible.

(発明の目的) 本発明の目的は、金属板連続鋳造装置において、板幅方
向に板厚の変動が少ない均一な金属板を製造することが
できる鋳造ロールを提供することにある。
(Object of the Invention) An object of the present invention is to provide a casting roll capable of manufacturing a uniform metal plate with little variation in plate thickness in the width direction in a continuous metal plate casting apparatus.

(発明の構成) 本発明の要旨は、鋳造ロールの内部構造をシェル(1)
スリーブ(2)アーバー(3)の3重構造とし、シェル
(1)とスリーブ(2)の間には複数の冷却水路(4)
を設け、スリーブ(2)とアーバー(3)の間には空間
部(8)を設け、シェル(1)をスリーブ(2)の内面
から複数のボルト(6)で固定し、スリーブ(2)とア
ーバー(3)はリブ(5)および又は円板(7)で固定
したことを特徴とする金属板連続鋳造機用鋳造ロールに
ある。
(Structure of the Invention) The gist of the present invention is to transform the internal structure of a casting roll into a shell (1).
Triple structure consisting of sleeve (2) and arbor (3), with multiple cooling channels (4) between shell (1) and sleeve (2).
A space (8) is provided between the sleeve (2) and the arbor (3), and the shell (1) is fixed from the inner surface of the sleeve (2) with a plurality of bolts (6). and arbor (3) are fixed by ribs (5) and/or discs (7).

本発明の鋳造ロールを図面によって説明すれば、第1図
に示すように、鋳造ロールの内部構造は、シェル(1)
スリーブ(2)アーバー(3)の3重構造からなり、シ
ェル(1)とスリーブ(2)の間には複数の冷却水路(
4)を設け、溶融金属からの熱がスリーブ(2)まで伝
導しない構造とすると同時に、シェル(1)が熱膨張す
る力をスリーブ(2)で受けるように、シェル(1)と
スリーブ(2)をスリーブ(2)の内面からボルト(6
)で固定する構造になっている。
To explain the casting roll of the present invention with reference to drawings, as shown in Fig. 1, the internal structure of the casting roll consists of a shell (1)
It consists of a triple structure of a sleeve (2) and an arbor (3), and there are multiple cooling channels (
4) so that the heat from the molten metal is not conducted to the sleeve (2), and at the same time the shell (1) and the sleeve (2) are connected so that the force of thermal expansion of the shell (1) is received by the sleeve (2). ) from the inside of the sleeve (2).
) is fixed in place.

さらに、シェル(1)とスリーブ(2)をスリーブ(2
)の内面からボルト(6)にて締結するために、スリー
ブ(2)とアーハー(3)との間には空間(8)が設け
られスリーブ(2)とアーバー(3°)はリブ(5)お
よび又は円板(7)等を用いて固定されている。
Furthermore, the shell (1) and the sleeve (2) are connected to the sleeve (2).
), a space (8) is provided between the sleeve (2) and the arbor (3), and the sleeve (2) and the arbor (3°) are connected to the rib (5). ) and/or a disc (7).

シェル(1)厚さに対してスリーブ(2)厚さを充分に
とれば、サーマルクラウンの発生量は極めて小さくする
ことができ、通常の熱間仕上げ板と同じような品質を充
分に保証することができる。しかしながら冷間圧延性を
考えるなら鋳造ロールのサーマルクラウンは胴長方向の
中央部が凹となる形状が望ましい。
If the thickness of the sleeve (2) is sufficient relative to the thickness of the shell (1), the amount of thermal crown generated can be extremely small, and the same quality as ordinary hot-finished boards can be fully guaranteed. be able to. However, when considering cold rolling properties, it is desirable that the thermal crown of the casting roll has a concave shape at the center in the longitudinal direction of the body.

このためには第2図に示すようにシェル(1)の肉厚を
胴長方向に両端部が厚く中央部が薄い構造とし、両端部
の熱膨張量を中央部の熱膨張量より大きくすることによ
り、サーマルクラウンの形状を中央部が凹となるように
するか、もしくは、第3図、第4図に示すようにスリー
ブ(2)の肉厚を胴長方向に両端部が薄く、中央部が厚
い構造とし、シェル(1)の熱膨張力を支える力を両端
部は小さく、中央部は大きくすることにより、シェル(
1)とスリーブ(2)の総体的な熱膨張量を両端部の方
が中央部より大きくして、サーマルクラウンの形状を中
央部が凹となるようにする。
To achieve this, as shown in Figure 2, the thickness of the shell (1) should be made thicker at both ends and thinner at the center in the longitudinal direction of the body, and the amount of thermal expansion at both ends should be greater than the amount of thermal expansion at the center. In this way, the shape of the thermal crown can be made concave at the center, or the thickness of the sleeve (2) can be made thinner at both ends in the longitudinal direction of the body and thinner at the center, as shown in Figures 3 and 4. The shell (1) has a thick structure, and the force supporting the thermal expansion force of the shell (1) is small at both ends and large at the center.
The overall amount of thermal expansion of 1) and the sleeve (2) is made larger at both ends than at the center, so that the shape of the thermal crown is concave at the center.

第2図は冷却水路(4)の大きさを変えてシェル(1)
の厚みを中央部が薄く両端部を厚くした例である。第3
図はスリーブ(2)自体の厚みを中央部が厚く両端部が
薄い変形スリーブとした例であり、第4図は、均一厚み
のスリーブ(2)に大きさを変えた冷却水路(4)を設
けて、結果的に中央部が厚く両端部が薄いスリーブとし
たものである。本発明の鋳造ロールの形状としては、第
2図〜第4図の具体例に限定されるものではなく、中央
部が薄く両端部の厚いシェル(1)と中央部が厚く両端
部の薄いスリーブ(2)とを組合せた構造とすることも
できる。
Figure 2 shows the shell (1) by changing the size of the cooling channel (4).
This is an example in which the thickness is thinner at the center and thicker at both ends. Third
The figure shows an example in which the thickness of the sleeve (2) itself is a deformed sleeve that is thicker in the center and thinner at both ends, and Figure 4 shows a sleeve (2) of uniform thickness with cooling channels (4) of different sizes. The result is a sleeve that is thick at the center and thin at both ends. The shape of the casting roll of the present invention is not limited to the specific examples shown in FIGS. 2 to 4, and includes a shell (1) that is thin in the center and thick at both ends, and a sleeve (1) that is thin in the center and thin at both ends. It is also possible to have a structure that combines (2).

シェル(1)の材質は、一般に金属が用いられるが、熱
膨張を生じない金属が望ましい。この熱膨張を生じない
金属としてはアンバー合金等が知られている。しかしア
ンバー合金は約400℃以上になると急激に熱膨張が生
じる。金属板連続鋳造機において鋳造ロールの径を適正
に選択すれば、溶融金属と接し金属板を生成している時
間より充分に長く冷却する時間をとることが可能であリ
、鋳造ロール内部の温度を低く押さえることができる。
Metal is generally used as the material for the shell (1), and preferably a metal that does not cause thermal expansion. Amber alloy and the like are known as metals that do not cause this thermal expansion. However, the amber alloy undergoes rapid thermal expansion at temperatures above about 400°C. If the diameter of the casting roll in a continuous metal plate casting machine is appropriately selected, it is possible to allow a cooling time that is sufficiently longer than the time it takes to contact the molten metal and produce the metal plate, and the temperature inside the casting roll can be reduced. can be kept low.

この点について理論計算した結果を第5図に示す。第5
図に示したように、鋳造ロール径、シェル(1)肉厚お
よび冷却方法を適正に選定すれば、シェル(1)の肉厚
方向の温度が4゜0℃以上となる範囲を表面層数mm程
度の深さに制御すると共に、熱膨張が生しない温度(4
00℃以下)範囲の肉厚を充分に厚くすることが可能と
なる。この様に設計されたアンバー合金製シェル(1)
を用いる事によりサーマルクラウンの発生が極めて少な
い鋳造ロールか得られる。
The results of theoretical calculations regarding this point are shown in FIG. Fifth
As shown in the figure, if the diameter of the casting roll, the wall thickness of the shell (1), and the cooling method are appropriately selected, the number of surface layers will be within the range where the temperature in the thickness direction of the shell (1) is 4° or more. In addition to controlling the depth to about 4 mm, the temperature at which thermal expansion does not occur (4
It becomes possible to make the wall thickness sufficiently thick in the range (00°C or lower). Amber alloy shell designed like this (1)
By using this method, a casting roll with extremely low occurrence of thermal crown can be obtained.

シェル(1)材質にアンバー合金を用いて鋳造ロールを
作成する事が可能となったが、アンバー合金の硬度は一
般にHvl 70前後で比較的軟質である。鋳造ロール
表面に傷が付くと、それが鋳造された金属板に転写され
、金属板の表面品質を著しく害する。これらの点を防止
する為にシェル(1)の外表面に相当する部分は高硬度
(Hv250以上)にする必要かある。このためにシェ
ル(1)材質は母材として熱り、張の小さいNi合金を
用いて、外表面に相当する部分を窒化処理、TD処理等
の表面硬化処理を行うか、ステライト等の高硬度材を肉
盛溶接もしくは溶射するか、もしくは工具鋼等の高硬度
材をクラッドした材料でシェル(1)を形成するのが好
ましい。。シェル(1)材質にアンバー合金を用い、鋳
造ロール径、シェル(1)肉厚および冷却方法を適正に
選定すればサーマルクラウンの発生が極めて少ない鋳造
ロールの作成が可能となるが、サーマルクラウンの形状
は胴長方向中央部が凸となる事はさけられない。冷間圧
延性を考えるなら、サーマルクラウンの形状は胴長方向
中央部が凹の形状か望ましい。したがってこの点をさら
に改良する為、中央部が薄く両端部のJ5いシェル(1
)と中央部か厚く両端部の薄いスリーブ(2)を組合せ
た構造とするのが好ましい。
Although it has become possible to create a casting roll using an amber alloy as the shell (1) material, the amber alloy generally has a hardness of around 70 Hvl and is relatively soft. If the surface of the casting roll is scratched, it will be transferred to the metal plate into which it is cast, significantly impairing the surface quality of the metal plate. In order to prevent these problems, it is necessary to make the portion corresponding to the outer surface of the shell (1) high hardness (Hv250 or more). For this purpose, the shell (1) is made of a Ni alloy that heats up and has a low tensile strength as a base material, and the portion corresponding to the outer surface is subjected to surface hardening treatment such as nitriding treatment or TD treatment, or it is made of high hardness material such as stellite. It is preferable to form the shell (1) by overlaying or thermal spraying the material, or by cladding with a high hardness material such as tool steel. . If amber alloy is used as the shell (1) material and the diameter of the casting roll, shell (1) wall thickness, and cooling method are appropriately selected, it is possible to create a casting roll with extremely low occurrence of thermal crown. It is inevitable that the shape will be convex at the center in the longitudinal direction of the torso. When considering cold rolling properties, it is desirable that the thermal crown has a concave shape at the center in the longitudinal direction of the body. Therefore, in order to further improve this point, the center part is thin and the J5 shells (1
) and a sleeve (2) that is thick at the center and thin at both ends is preferable.

上述の記載では、鋳造ロール構造もしくはシェル材質等
の変更によるサーマルクラウンの形状改善方法を述べた
が、これらの方法以外でサーマルクラウンの形状を改善
する方法として、第1図に示すように鋳造ロールの胴長
方向の端部を外表面から火炎もしくは、誘導加熱等の装
置を設けてこれにより局部的に加熱するかもしくは、鋳
造ロール内部にヒーター等を設置して局部的に加熱し、
金属板鋳造時の溶融金属からの熱伝導によって生じる熱
膨張以上の熱膨張を生しさせて、サーマルクラウンかJ
n長方向中央部が凹となる様に制御することができる。
In the above description, a method of improving the shape of the thermal crown by changing the casting roll structure or shell material, etc. was described, but as a method other than these methods to improve the shape of the thermal crown, as shown in Fig. 1, the method of improving the shape of the thermal crown is as follows: The ends of the body in the longitudinal direction are heated locally from the outer surface by a flame or induction heating device, or a heater or the like is installed inside the casting roll to locally heat the cast rolls.
Thermal crown or J
It can be controlled so that the central part in the n-long direction becomes concave.

尚、鋳造ロールの端部を加熱装置(9)によって局部的
に加熱する温度は、鋳造条件、鋳造ロール構造等により
最適となる様選定する。
The temperature at which the end of the casting roll is locally heated by the heating device (9) is selected to be optimal depending on the casting conditions, the structure of the casting roll, etc.

(発明の効果) 本発明によれば、鋳造ロールの中央部分と両端部との膨
張をより均一にでき、1飼長方向のロール表面を直線状
にできるので、連続的に製造される金属板をフラットで
良質な製品とすることができる。
(Effects of the Invention) According to the present invention, the expansion of the center portion and both ends of the casting roll can be made more uniform, and the roll surface in one feed length direction can be made straight, so that metal sheets can be manufactured continuously. can be made into a flat, high-quality product.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明鋳造ロールの基本構造を示す模式図。 第2図〜第4図は、本発明鋳造ロールの他の例を示すも
ので、第2図はシェルの厚みを変えたもの、第3図およ
び第4図はスリーブの厚みを変えたものである。第5図
は、金属板製造中のシェル内の温度分布を示すグラフで
ある。 1、シェル      6.ボルト 2、スリーブ     71円板 3、アーバー     8.空間 4、冷却水路     9.加熱装置 5、リブ
FIG. 1 is a schematic diagram showing the basic structure of the casting roll of the present invention. Figures 2 to 4 show other examples of the casting roll of the present invention, with Figure 2 having a shell with a different thickness, and Figures 3 and 4 having a sleeve with a different thickness. be. FIG. 5 is a graph showing the temperature distribution inside the shell during production of the metal plate. 1. Shell 6. Bolt 2, sleeve 71 disc 3, arbor 8. Space 4, cooling waterway 9. Heating device 5, rib

Claims (1)

【特許請求の範囲】 1、鋳造ロールの内部構造をシェル(1)スリーブ(2
)アーバー(3)の3重構造とし、シェル(1)とスリ
ーブ(2)の間には複数の冷却水路(4)を設け、スリ
ーブ(2)とアーバー(3)の間には空間部(8)を設
け、シェル(1)をスリーブ(2)の内面から複数のボ
ルト(6)で固定し、スリーブ(2)とアーバー(3)
はリブ(5)および又は円板(7)で固定したことを特
徴とする金属板連続鋳造機用鋳造ロール。 2、シェルの肉厚を、胴長方向に中央部が薄く両端部が
厚い構造とした請求項1記載の鋳造ロール。 3、スリーブの肉厚を、胴長方向に中央部が厚く両端部
が薄い構造とした請求項1または2記載の鋳造ロール。 4、シェルの材質として、低熱膨張合金または低熱膨張
合金を母材とし外表面を表面硬化処理もしくは高硬度異
種材料でコーティングもしくは接合したものを用いた請
求項1〜3のいずれか1つに記載の鋳造ロール。 5、鋳造ロールの両端部に局部的に加熱する装置を備え
た請求項1〜4のいずれか1つに記載の鋳造ロール。
[Claims] 1. The internal structure of the casting roll is made up of a shell (1) and a sleeve (2).
) A triple structure of arbor (3), a plurality of cooling channels (4) are provided between the shell (1) and the sleeve (2), and a space ( 8), the shell (1) is fixed from the inner surface of the sleeve (2) with a plurality of bolts (6), and the sleeve (2) and the arbor (3) are fixed.
A casting roll for a continuous metal plate casting machine, characterized in that the roll is fixed with a rib (5) and/or a disc (7). 2. The casting roll according to claim 1, wherein the thickness of the shell is thinner at the center and thicker at both ends in the longitudinal direction of the shell. 3. The casting roll according to claim 1 or 2, wherein the sleeve has a wall thickness that is thicker at the center in the longitudinal direction of the body and thinner at both ends. 4. The material of the shell is a low thermal expansion alloy or a base material made of a low thermal expansion alloy, and the outer surface is surface hardened or coated or bonded with a high hardness dissimilar material, according to any one of claims 1 to 3. casting roll. 5. The casting roll according to any one of claims 1 to 4, further comprising a device for locally heating at both ends of the casting roll.
JP29251188A 1988-11-21 1988-11-21 Casting roll for metal plate continuous casting machine Granted JPH02142646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29251188A JPH02142646A (en) 1988-11-21 1988-11-21 Casting roll for metal plate continuous casting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29251188A JPH02142646A (en) 1988-11-21 1988-11-21 Casting roll for metal plate continuous casting machine

Publications (2)

Publication Number Publication Date
JPH02142646A true JPH02142646A (en) 1990-05-31
JPH0557064B2 JPH0557064B2 (en) 1993-08-23

Family

ID=17782762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29251188A Granted JPH02142646A (en) 1988-11-21 1988-11-21 Casting roll for metal plate continuous casting machine

Country Status (1)

Country Link
JP (1) JPH02142646A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08174158A (en) * 1994-12-26 1996-07-09 Nippon Metal Ind Co Ltd Roll for continuous casting of metallic sheet
CN109663890A (en) * 2017-10-17 2019-04-23 洛阳乾中新材料科技有限公司 A kind of manufacturing method of tin class casting

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60113149U (en) * 1983-12-29 1985-07-31 石川島播磨重工業株式会社 Roll for continuous casting machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60113149U (en) * 1983-12-29 1985-07-31 石川島播磨重工業株式会社 Roll for continuous casting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08174158A (en) * 1994-12-26 1996-07-09 Nippon Metal Ind Co Ltd Roll for continuous casting of metallic sheet
CN109663890A (en) * 2017-10-17 2019-04-23 洛阳乾中新材料科技有限公司 A kind of manufacturing method of tin class casting

Also Published As

Publication number Publication date
JPH0557064B2 (en) 1993-08-23

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