JPH0683846B2 - Composite roll for rolling bar steel and its manufacturing method - Google Patents
Composite roll for rolling bar steel and its manufacturing methodInfo
- Publication number
- JPH0683846B2 JPH0683846B2 JP60234094A JP23409485A JPH0683846B2 JP H0683846 B2 JPH0683846 B2 JP H0683846B2 JP 60234094 A JP60234094 A JP 60234094A JP 23409485 A JP23409485 A JP 23409485A JP H0683846 B2 JPH0683846 B2 JP H0683846B2
- Authority
- JP
- Japan
- Prior art keywords
- outer layer
- caliber
- composite roll
- steel strip
- rolling steel
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
-
- 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
- B21B2013/006—Multiple strand rolling mills; Mill stands with multiple caliber rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/03—Sleeved rolls
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は条鋼圧延用複合ロール及びその製法に関するも
のである。TECHNICAL FIELD The present invention relates to a composite roll for strip rolling and a method for producing the same.
（従来の技術） 従来、複合ロールの製法としては、遠心力鋳造法又は中
抜鋳造法によるのが一般的であり、これらの方法では原
理的にそのロール胴部における外層肉厚が第３図に示す
ように肉厚が一定となるものである。一方条鋼圧延用ロ
ールの場合、カリバーの孔型形状をロール表面に設けて
所定形状の鋼材を圧延することが一般的である。例えば
第３図、第４図の如く、１本のロールの片側に深い形状
（大きい形状）の孔型を設け、反対側には浅い形状（小
さい形状）の孔型を設けたり、又孔型を設けずフラット
なまゝで圧延する場合もある。この場合、大きい孔型の
場合は温度の高い鋼材を圧延し圧下量も大きいので、ロ
ールとしては耐クラック性、かみ込み性及び強靭性に優
れていることが必要である。一方小さい孔型又はフラッ
ト面で圧延する部分は、圧延材の温度も低く仕上り製品
の肌や形状を正しく確保するため、特に耐摩耗性や耐肌
荒性に優れることが必要である。そこで従来ロールの各
部分に要求される性質の中間をねらった材質のロールも
あった。しかし、この様に１本のロールにおいて軸方向
の位置によって大きく性質を変えることは容易でなかっ
た。(Prior Art) Conventionally, as a manufacturing method of a composite roll, a centrifugal casting method or a blanking casting method is generally used. In these methods, the outer layer thickness in the roll body is theoretically as shown in FIG. As shown in, the wall thickness is constant. On the other hand, in the case of a roll for rolling a strip steel, it is common to provide a caliber-like shape on the roll surface to roll a steel material having a predetermined shape. For example, as shown in FIG. 3 and FIG. 4, one roll may have a deep (large) hole on one side and a shallow (small) hole on the other side. In some cases, it may be rolled flat without the provision. In this case, in the case of a large hole type, since a steel material having a high temperature is rolled and the amount of reduction is large, it is necessary for the roll to have excellent crack resistance, bite resistance and toughness. On the other hand, the portion rolled with a small hole shape or flat surface is required to have particularly excellent abrasion resistance and rough surface resistance in order to secure the skin and shape of the finished product with a low temperature of the rolled material. Therefore, there is also a roll made of a material aiming at the middle of the properties required for each part of the conventional roll. However, it was not easy to greatly change the properties of one roll depending on the axial position.
そこで上記のように軸方向の位置によって性質を変える
手段としては、金型への塗型剤の種類や厚さを変えた
り、又熱処理時に部分的に急冷、徐冷することにより行
われていた。Therefore, as a means for changing the properties depending on the position in the axial direction as described above, the kind and thickness of the coating agent for the mold are changed, or the material is rapidly cooled or gradually cooled during the heat treatment. .
（発明が解決しようとする問題点） 前記従来技術のうち、ロールの各部分に要求される性質
の中間をねらった外層材質のロールは、寿命の向上に大
きな制約を受けていた。また前記熱処理時等により軸方
向の位置で性質を変える手段は、その効果が僅かであっ
た。(Problems to be Solved by the Invention) Among the above-mentioned conventional techniques, a roll made of an outer layer material aiming at the middle of the properties required for each part of the roll has been greatly restricted in improving the life. Further, the effect of the means for changing the properties at the axial position due to the heat treatment or the like was slight.
（問題点を解決するための手段） 本発明は、上記従来の諸欠点を解消し、条鋼圧延用複合
ロールのカリバー各孔型としての必要特性を満足させ、
大幅な成積向上が可能なロールを得る目的でなされたも
のであり、この目的は次の構成により達成される。(Means for Solving the Problems) The present invention solves the above-mentioned conventional drawbacks and satisfies the necessary characteristics as each caliber hole type of the composite roll for strip steel rolling,
The purpose is to obtain a roll capable of significantly improving the product volume, and this purpose is achieved by the following constitution.
第１に条鋼圧延用複合ロールとして、胴部が耐摩耗性、
耐肌荒性の優れた外層と、耐クラック性・強靭性の優れ
た芯部とが冶金的に一体結合されたものからなり、一方
の胴端から軸方向にカリバーが順次深いものから浅いも
のを形成した条鋼圧延用複合ロールにおいて、前記外層
は外周面が円筒状で内周面が軸方向傾斜状に厚さが異な
るように形成され、深いカリバーが厚さの薄い外層側に
形成されると共に浅いカリバーが厚さの厚い外層側に形
成され、前記外層厚さを、深いカリバーにあっては初径
時において孔型深さより薄く形成し、浅いカリバーにあ
っては廃却径まで外層内に存する厚さ形成された点に特
徴があり、 第２に条鋼圧延用複合ロールの製法として、胴部が耐摩
耗性・耐肌荒性の優れた外層と、耐クラック性・強靭性
の優れた芯部とが冶金的に一体結合されたものからな
り、一方の胴端から軸方向にカリバーが順次深いものか
ら浅いものを形成した条鋼圧延用複合ロールの製造法で
あって、カリバー孔型形状に応じ所望の外層材鋳込重量
とＧNO.を選定して上部に薄く、下部が厚くなるよう竪
型遠心鋳造鋳型により、外周面が円筒状で内周面が軸方
向傾斜状とされた外層を鋳造凝固せしめ、その後前記鋳
造鋳型の回転を停止して外層内部に芯材を鋳込み、外層
と芯部を溶着一体化させてロール素材を得、このロール
素材表面から浅いカリバーを厚さの厚い側の外層内に形
成すると共に深いカリバーを厚さの薄い側の外層から芯
部にかけて形成した点に特徴がある。First, as a composite roll for rolling steel bar, the body part has wear resistance,
It consists of an outer layer with excellent skin resistance and a core part with excellent crack resistance and toughness that are metallurgically integrated, and the caliber is deeper to shallower in the axial direction from one trunk end. In the composite roll for forming rolled steel, the outer layer is formed such that the outer peripheral surface is cylindrical and the inner peripheral surface is inclined in the axial direction so that the thickness is different, and the deep caliber is formed on the thin outer layer side. A shallow caliber is formed on the thick outer layer side, and the outer layer thickness is formed to be thinner than the hole depth at the initial diameter in the deep caliber, and in the outer layer up to the discard diameter in the shallow caliber. The second feature of the composite roll for rolling steel strip is the outer layer with excellent wear resistance and rough surface resistance, and the excellent crack resistance and toughness. The metal core is integrally metallurgically bonded, A method for manufacturing a composite roll for rolling a steel strip in which calibers are sequentially formed from deep to shallow in the axial direction from the body end of the, and the desired outer layer material casting weight and G NO. Are selected according to the caliber hole shape . Vertical centrifugal casting mold so that the upper part becomes thinner and the lower part becomes thicker, the outer layer having a cylindrical outer peripheral surface and an inner peripheral surface inclined in the axial direction is cast and solidified, and then the rotation of the casting mold is stopped. A core material is cast inside the outer layer, the outer layer and the core are welded and integrated to obtain a roll material, and a shallow caliber is formed in the outer layer on the thick side from the surface of the roll material and a deep caliber is thinly formed. It is characterized in that it is formed from the outer layer on the side to the core.
（実施例） 以下、本発明の好適な実施例を第１図、第２図について
説明する。(Embodiment) A preferred embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
第１図は本発明の条鋼圧延用複合ロールの一部破断断面
図であり、１は胴部における外層、２は芯部であり、一
方の胴端から軸方向にカリバーの孔型が順次深いものか
ら浅いもの、即ち、K1,K3,K5,K7が形成されている。こ
の際前記カリバーは一方の胴端か軸方向に1/2又は1/3以
下はカリバーの孔型が深く、残りはカリバーの孔型は浅
いもので形成されるが、前記浅い孔型に代えフラット面
としたものでも良い。FIG. 1 is a partially cutaway cross-sectional view of a composite roll for rolling steel strip according to the present invention, in which 1 is an outer layer in a barrel portion, 2 is a core portion, and the caliber of the caliber is deeper in the axial direction from one barrel end Shallow ones, that is, K 1 , K 3 , K 5 , and K 7 are formed. At this time, the caliber is formed such that the caliber has a deep caliber for one half or axial direction of 1/2 or 1/3 or less, and the rest has a caliber with a shallow caliber. It may be flat.
前記外層１の厚さは、深い孔型K1部分にあっては初径時
において該孔型K1深さより薄く形成し、浅い孔型K7にあ
っては廃却径までの厚さに形成され、且つ全体として外
層外周面が円筒状で、外層内周面が軸方向傾斜状に厚さ
が異なるように形成されている。この際両端面の外層肉
厚差が10〜150mmとすることが好ましい。The thickness of the outer layer 1, in the deep hole type K 1 portion formed thinner than the hole-type K 1 depth at first径時, in the shallow grooved K 7 to a thickness of up waste却径The outer layer outer peripheral surface is formed in a cylindrical shape as a whole, and the outer layer inner peripheral surface is formed so as to have an axially inclined shape with different thicknesses. At this time, it is preferable that the outer layer thickness difference between both end surfaces is 10 to 150 mm.
一方外層１の材質は耐摩耗性、耐肌荒性の優れたものが
良く、高硬度アダマイト、特殊アダマイト、黒鉛鋼、DC
I、グレン又はチルド材等が適用できる。On the other hand, the material of the outer layer 1 is preferably one with excellent wear resistance and rough surface resistance, such as high hardness adamite, special adamite, graphite steel, DC
I, grain or chilled material can be applied.
前記芯部２は外層１と冶金的に一体結合されたもので、
材質として耐クラック性・強靭性の優れたものが良く、
強靭DCI、DCI、又は黒鉛鋼等が適用できる。The core 2 is metallurgically integrated with the outer layer 1,
Good materials with excellent crack resistance and toughness,
Tough DCI, DCI, or graphite steel can be applied.
なお、本発明では主して胴長／胴径が1.2〜3.8のロール
を対象とするが、これに限定されるものでない。Although the present invention mainly targets rolls having a barrel length / body diameter of 1.2 to 3.8, the present invention is not limited to this.
次に上記本発明の条鋼圧延用複合ロールの製法を第２図
について説明する。同図は本発明条鋼圧延用複合ロール
を製造する装置としての竪型遠心鋳造鋳型を示すと共に
その作用状態を示すものであり、鋳型３内に円筒状スリ
ーブ４を挿嵌し、その上下にネック部砂型である内スリ
ーブ5,5′を挿入してあり、従来公知のものである。本
発明は先ず外層材をせき鉢６より鋳込むに際し、外層溶
湯の鋳込重量とＧNO.を選定して、鋳込溶湯が鋳型３内
で上部に薄く、下部が厚くなるようにする。即ち竪型遠
心鋳造では外層を形成する際、上部に薄く下部は厚くな
る傾向にあり、それはＧNO.が低いほど肉厚差が大きく
なる。この原理に着目して、外層１を軸方向傾斜状に厚
さを異なるようにしようとするものである。Next, a method for manufacturing the composite roll for rolling steel strip according to the present invention will be described with reference to FIG. The figure shows a vertical centrifugal casting mold as an apparatus for manufacturing a composite roll for rolling steel strip according to the present invention and its working state. A cylindrical sleeve 4 is inserted into the mold 3 and a neck is provided above and below it. Inner sleeves 5 and 5'of partial sand type are inserted, which is conventionally known. According to the present invention, when the outer layer material is cast from the mortar 6, the weight of the outer layer molten metal and G NO. Are selected so that the molten molten metal is thin in the upper portion and thick in the lower portion in the mold 3. That is, in vertical centrifugal casting, when forming the outer layer, the upper part tends to be thinner and the lower part tends to be thicker . The lower the G NO., The greater the difference in wall thickness. Focusing on this principle, the outer layer 1 is made to have a different thickness in an axially inclined shape.
ここで、前記ＧNO.の選定は次式により求める。Here, the selection of G NO. Is obtained by the following formula.
但し、D:金型内径（mm） N:回転数 （r.p.m） H:胴部金型長さ（mm） γＴ：上部外層内半径（mm） γＢ：下部外層内半径（mm） 即ち、上記式を利用し、カリバー孔型形状に応じ、任意
の外層重量とＧNO.を選定し、溶湯を鋳型３に鋳込むこ
とにより、第２図の符号７に示す外層が得られ、凝固後
に鋳造鋳型３を停止して上部から所定の芯部溶湯を鋳込
むことにより、外層１と芯部２が冶金的に一体化したロ
ール素材が得られる。なお、前記ＧNO.は200〜100が好
適である。 However, D: Mold inner diameter (mm) N: Rotation speed (rpm) H: Body mold length (mm) γ T : Upper outer layer inner radius (mm) γ B : Lower outer layer inner radius (mm) Using the above formula, an arbitrary outer layer weight and G NO. Are selected according to the caliber shape of the caliber, and the molten metal is cast into the mold 3 to obtain the outer layer shown by reference numeral 7 in FIG. By stopping the casting mold 3 and casting a predetermined molten core portion from above, a roll material in which the outer layer 1 and the core portion 2 are metallurgically integrated can be obtained. The G NO. Is preferably 200-100.
以下本発明の更に具体的実施例を挙げると次の通りであ
る。The following are more specific examples of the present invention.
550φ×1200lの条鋼用粗ロール（第４図参照）の下ロー
ルの製造において、外層材として下記高硬度アダマイト
材質を鋳造凝固せしめた後、金型を停止し、次いで芯部
としての強靭DCIを上部より鋳込んで、外層、芯部を溶
着一体化してロール素材を得た。In the manufacture of the lower roll of 550φ × 1200l rough roll for bar steel (see Fig. 4), after casting and solidifying the following high hardness adamite material as the outer layer material, the mold was stopped, and then the tough DCI as the core part It was cast from the upper part and the outer layer and the core were welded and integrated to obtain a roll material.
鋳造条件及び外層厚さの関係は下記の通りである。The relationship between the casting conditions and the outer layer thickness is as follows.
・外層鋳造時のＧNO.50 ・化学組成（％）及び硬度（Hs） ・孔型深さと外層厚さの関係 その結果、K5、K7は炭化物の厚い耐摩耗性のある外層で
廃却径まで使用可能となり、K1、K3の孔型底は初径時か
ら耐クラック性かつ強靭な材料となり、所期の目的を達
し得た。・ G NO. 50 during outer layer casting ・ Chemical composition (%) and hardness (Hs) ・ Relationship between hole depth and outer layer thickness As a result, K 5 and K 7 are thick wear-resistant outer layers of carbide and can be used up to the disposal diameter, and the hole bottoms of K 1 and K 3 become crack-resistant and tough materials from the initial diameter, The intended purpose could be reached.
（発明の効果） 本発明の条鋼圧延用複合ロールによれば、外層は外周面
が円筒状で内周面が軸方向傾斜状に厚さが異なるように
形成され、深いカリバーが厚さの薄い外層側に形成され
ると共に浅いカリバーが厚さの厚い外層側に形成され、
外層厚さを、深いカリバーにあっては初径時において孔
型深より薄く形成し、浅いカリバーにあっては廃却径ま
で外層内に存する厚さに形成したものであるから、浅い
孔型は廃却径までの外層厚さを確保でき、深い孔型は孔
型底部及び芯部としての必要特性を満足させ、大幅な成
積向上が可能な圧延用複合ロールを提供できたのであ
る。(Effect of the Invention) According to the composite roll for rolling steel strip of the present invention, the outer layer is formed so that the outer peripheral surface is cylindrical and the inner peripheral surface is inclined in the axial direction with different thicknesses, and the deep caliber is thin. It is formed on the outer layer side and a shallow caliber is formed on the thick outer layer side,
For the deep caliber, the outer caliber is formed to be thinner than the hole depth at the initial diameter, and for the shallow caliber, it is formed to the thickness existing in the outer layer up to the disposal diameter. It was possible to provide a composite roll for rolling which can secure the outer layer thickness up to the diameter of waste and the deep hole type can satisfy the required characteristics as the bottom and core of the hole type and can greatly improve the product volume.
又、その製法は、従来の竪型遠心鋳造鋳型をその侭使用
し、単に外層材鋳込重量とＧNO.を選定するだけで、外
層が軸方向傾斜状に厚さが異なるものを形成でき、従来
の製法に比し極めて容易簡単となり、実用的効果は著大
である。In addition, the manufacturing method uses a conventional vertical centrifugal casting mold, and by simply selecting the casting weight of the outer layer material and G NO. , It is possible to form the outer layer with a different thickness in the axial direction. However, it is extremely easy and simple compared to the conventional manufacturing method, and the practical effect is remarkable.
第１図は本発明の圧延用複合ロールの１実施例を示した
一部破断断面図、第２図は本発明ロールを製造する竪型
遠心鋳造鋳型の断面図で、外層鋳込状況を示したもので
ある。第３図は従来の複合ロールの一部破断断面図、第
４図は同条鋼用粗ロールの上中下三段ロール断面図であ
る。 １……外層、２……芯部、３……鋳型、４……円筒状ス
リーブ、5,5′……内スリーブ、６……せき鉢、K1,K3、
K5、K7……カリバーの孔型。FIG. 1 is a partially cutaway sectional view showing one embodiment of the rolling composite roll of the present invention, and FIG. 2 is a sectional view of a vertical centrifugal casting mold for producing the roll of the present invention, showing an outer layer casting condition. It is a thing. FIG. 3 is a partially broken cross-sectional view of a conventional composite roll, and FIG. 4 is a cross-sectional view of upper, middle, and lower three-stage rolls of the rough roll for steel strip. 1 ... outer layer 2 ... core 3 ... mold, 4 ... cylindrical sleeve, 5,5 '... in the sleeve, 6 ... Sekihachi, K 1, K 3,
K 5 , K 7 ... Caliber hole type.
Claims (10)
と、耐クラック性・強靭性の優れた芯部とが冶金的に一
体結合されたものからなり、一方の胴端から軸方向にカ
リバーが順次深いものから浅いものを形成した条鋼圧延
用複合ロールにおいて、 前記外層は外周面が円筒状で内周面が軸方向傾斜状に厚
さが異なるように形成され、深いカリバーが厚さの薄い
外層側に形成されると共に浅いカリバーが厚さの厚い外
層側に形成され、前記外層厚さを、深いカリバーにあっ
ては初径時において孔型深さより薄く形成し、浅いカリ
バーにあっては廃却径まで外層内に存する厚さに形成さ
れたことを特徴とする条鋼圧延用複合ロール。1. A body part comprising an outer layer excellent in wear resistance and surface roughening resistance and a core part excellent in crack resistance and toughness which are metallurgically bonded together. In the composite roll for rolling steel bar in which the caliber is sequentially formed from a deep one to a shallow one in the axial direction, the outer layer is formed so that the outer peripheral surface is cylindrical and the inner peripheral surface is formed to have an axially inclined shape with a different thickness, The caliber is formed on the thin outer layer side and the shallow caliber is formed on the thick outer layer side, and the outer layer thickness is formed to be thinner than the hole depth at the initial diameter in the deep caliber, For shallow calibers, a composite roll for rolling steel strips, characterized in that it is formed to a thickness that exists in the outer layer up to the discard diameter.
ト、黒鉛鋼、DCI、グレン又はチルド材とされ、芯部が
強靭DCI、DCI又は黒鉛鋼である特許請求の範囲第１項記
載の条鋼圧延用複合ロール。2. The rolling steel strip according to claim 1, wherein the outer layer is made of high hardness adamite, special adamite, graphite steel, DCI, grain or chilled material, and the core is tough DCI, DCI or graphite steel. Composite roll.
囲第１項又は第２項記載の条鋼圧延用複合ロール。3. The composite roll for rolling steel strip according to claim 1 or 2, wherein the length / diameter is 1.2 to 3.8.
許請求の範囲第３項記載の条鋼圧延用複合ロール。4. The composite roll for rolling steel strip according to claim 3, wherein the outer layer thickness difference between both end surfaces is 10 to 150 mm.
と、耐クラック性・強靭性の優れた芯部が冶金的に一体
結合されたものからなり、一方の胴端から軸方向にカリ
バーが順次深いものから浅いものを形成した条鋼複合ロ
ールの製造法であって、 カリバー孔型形状に応じ所望の外層材鋳込重量とGNO.を
選定して上部に薄く、下部が厚くなるよう竪型遠心鋳造
鋳型により、外周面が円筒状で内周面が軸方向傾斜状と
された外層を鋳造凝固せしめ、その後前記鋳造鋳型の回
転を停止して外層内部に芯材を鋳込み、外層と芯部を溶
着一体化させてロール素材を得、このロール素材表面か
ら浅いカリバーを厚さの厚い側の外層内に形成すると共
に深いカリバーを厚さの薄い側の外層から芯部にかけて
形成したことを特徴とする条鋼圧延用複合ロールの製
法。5. The body part is formed by metallurgically integrally combining an outer layer having excellent wear resistance and rough surface resistance with a core part having excellent crack resistance and toughness. A method for manufacturing a steel strip composite roll in which the caliber is formed sequentially from deep to shallow in the axial direction.The desired outer layer material casting weight and GNO. Are selected according to the caliber hole shape, and the upper part is thin and the lower part is A vertical centrifugal casting mold is used to thicken the outer layer with a cylindrical outer peripheral surface and an inner peripheral surface inclined in the axial direction to solidify the outer layer, and then the rotation of the casting mold is stopped and the core material is cast inside the outer layer. , The outer layer and the core are fused and integrated to obtain a roll material, and a shallow caliber is formed from the surface of the roll material in the outer layer on the thick side and a deep caliber is applied from the outer layer on the thin side to the core. Of the composite roll for rolling steel strip characterized by being formed Law.
カリバーが深く、残りはカリバーが浅い又はフラットで
ある特許請求の範囲第５項記載の条鋼圧延用複合ロール
の製法。6. A composite roll for rolling steel strip according to claim 5, wherein the caliber is deep in the axial direction from one of the body ends to 1/2 or 1/3 or less and the rest is shallow or flat. Manufacturing method.
許請求の範囲第５項記載の条鋼圧延用複合ロールの製
法。7. A method for producing a composite roll for rolling steel strip according to claim 5, wherein the mold GNO. At the time of casting the outer layer is set to 20 to 100.
ト、黒鉛鋼、DCI、グレン又はチルド材とされ、芯部が
強靭DCI、DCI又は黒鉛鋼である特許請求の範囲第５項記
載の条鋼圧延用複合ロールの製法。8. The rolling steel strip according to claim 5, wherein the outer layer is made of high hardness adamite, special adamite, graphite steel, DCI, grain or chilled material, and the core is tough DCI, DCI or graphite steel. How to make a composite roll.
囲第５項又は第６項記載の条鋼圧延用複合ロールの製
法。9. The method for producing a composite roll for rolling steel strip according to claim 5 or 6, wherein the body length / body diameter is 1.2 to 3.8.
特許請求の範囲第９項記載の条鋼圧延用複合ロールの製
法。10. The method for producing a composite roll for rolling steel strip according to claim 9, wherein the difference in outer wall thickness between both end surfaces is 10 to 150 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60234094A JPH0683846B2 (en) | 1985-10-18 | 1985-10-18 | Composite roll for rolling bar steel and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60234094A JPH0683846B2 (en) | 1985-10-18 | 1985-10-18 | Composite roll for rolling bar steel and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6293014A JPS6293014A (en) | 1987-04-28 |
| JPH0683846B2 true JPH0683846B2 (en) | 1994-10-26 |
Family
ID=16965522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60234094A Expired - Lifetime JPH0683846B2 (en) | 1985-10-18 | 1985-10-18 | Composite roll for rolling bar steel and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0683846B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404172C (en) * | 2006-03-14 | 2008-07-23 | 安泰科技股份有限公司 | Production method of grooved composite roll for centrifugal casting |
| WO2012094557A2 (en) | 2011-01-07 | 2012-07-12 | Graphic Packaging International, Inc. | Carton with handle |
| CN105618715B (en) * | 2016-01-12 | 2017-11-21 | 安徽环渤湾高速钢轧辊有限公司 | A kind of wear-resistant high speed steel composite roll and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59311B2 (en) * | 1979-04-26 | 1984-01-06 | 株式会社クボタ | Manufacturing method for rolls for partial composite rolling |
| JPS5791862A (en) * | 1980-11-27 | 1982-06-08 | Kubota Ltd | Production of composite roll |
-
1985
- 1985-10-18 JP JP60234094A patent/JPH0683846B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6293014A (en) | 1987-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3659323A (en) | A method of producing compound cast rolls | |
| EP0491978B1 (en) | Cylinder block for internal combustion engine | |
| JPH0683846B2 (en) | Composite roll for rolling bar steel and its manufacturing method | |
| US5403670A (en) | Compound sleeve roll and method for producing same comprising chamfered axial ends | |
| JPS6293015A (en) | Compound roll for rolling and its production | |
| JPS61199051A (en) | Roll material for rolling excellent in heat cracking resistance, wear resistance and seizure resistance | |
| DE4040975A1 (en) | Cylinder block prodn. of light metal alloy - comprising application of an abrasion resistant coating to the support collars | |
| JP3880770B2 (en) | Method of manufacturing high-speed sleeve roll for rolling and sleeve roll | |
| JPS57131532A (en) | Multiple hole cylinder for plastic extrusion-molding machine | |
| JP2781717B2 (en) | Method for producing composite two-layer material | |
| JPH0340102B2 (en) | ||
| JPS5930484B2 (en) | Composite sleeve shrink fitting roll | |
| SU1696127A1 (en) | Metal mould for casting of pig iron cambered rolls | |
| RU2007260C1 (en) | Hollow blank horizontal continuous-casting mould | |
| JPH0152110B2 (en) | ||
| JPH0245522B2 (en) | ||
| JPS62212008A (en) | Sleeve roll with caliber for rolling | |
| AT158619B (en) | Method and device for lining an engine cylinder made of light metal with a lining of greater hardness and higher melting point by centrifugal casting. | |
| JPH0536122B2 (en) | ||
| KR20200088738A (en) | Rolling roll consisting of shaft and double roll sleeve | |
| JPS5924565A (en) | Thin walled and two layered chilled casting and its production | |
| JPH09122714A (en) | Manufacture of composite roll | |
| JPH0293039A (en) | Graphite-crystallized high-chrome cast iron roll material having excellent seizure resistance and wear resistance | |
| JPS6046861A (en) | Highly wear resistant composite material and its production | |
| JPS6046237A (en) | Ceramics-metal composite material and manufacture thereof |