JPH051350A - Roll external layer material for rolling - Google Patents
Roll external layer material for rollingInfo
- Publication number
- JPH051350A JPH051350A JP30383291A JP30383291A JPH051350A JP H051350 A JPH051350 A JP H051350A JP 30383291 A JP30383291 A JP 30383291A JP 30383291 A JP30383291 A JP 30383291A JP H051350 A JPH051350 A JP H051350A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- outer layer
- roll
- layer material
- external layer
- 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
Links
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- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐摩耗性と耐クラック
性を兼備した圧延用ロール外層材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling roll outer layer material having both wear resistance and crack resistance.
【０００２】[0002]
【従来の技術】従来、耐摩耗性が要求される熱間圧延用
ロールは、外層と内層からなる複合ロールとされ、外層
材をセメンタイト系の炭化物が晶出した高Ｃｒ鋳鉄、ま
たはＮｉ−グレン鋳鉄、内層材を靱性の良いねずみ鋳
鉄、またはダクタイル鋳鉄として、遠心力鋳造法によっ
て製造されている。然るに、圧延条件の苛酷化及び圧延
における生産性向上の要求等から、より一層の耐摩耗性
と耐クラック性を備えた圧延用ロールの提供が要求され
ている。2. Description of the Related Art Conventionally, a hot rolling roll required to have wear resistance is a composite roll consisting of an outer layer and an inner layer, and the outer layer material is a high Cr cast iron crystallized with cementite type carbide or Ni-grain. It is manufactured by the centrifugal force casting method using cast iron, the inner layer material as gray cast iron having good toughness, or ductile cast iron. However, due to stricter rolling conditions and demand for improved productivity in rolling, it is required to provide rolling rolls having further wear resistance and crack resistance.
【０００３】このような状況から、例えば特開昭60-124
407 号、特開昭61-177355 号には、従来の遠心力鋳造ロ
ールの外層材として高Ｖ鋳鉄を用いることが提案されて
いる。Under such circumstances, for example, Japanese Patent Laid-Open No. 60-124
No. 407 and Japanese Patent Laid-Open No. 61-177355 propose to use high V cast iron as an outer layer material of a conventional centrifugal casting roll.
【０００４】[0004]
【発明が解決しようとする課題】然しながら、遠心力鋳
造ロールの外層材として高Ｖ鋳鉄を用いる圧延用ロール
では、比重の小さいＶ炭化物が遠心分離し、ロール外層
内の特性が肉厚方向で不均一になる。この傾向は大型ロ
ールで外層肉厚が大なるほど著しく、実用ロールとして
の使用に耐えることができないという問題点がある。However, in a rolling roll using high V cast iron as the outer layer material of a centrifugal casting roll, V carbide having a small specific gravity is centrifugally separated, and the characteristics in the outer layer of the roll are not uniform in the thickness direction. Be uniform. This tendency is remarkable as the outer layer thickness of the large roll increases, and there is a problem that it cannot withstand use as a practical roll.
【０００５】尚、特開昭58-87249号公報、特開平1-9635
5号公報には、高速度鋼なみに高合金化した鋳鋼、鋳鉄
を適用したロール材が提案されている。然しながら、特
開昭58-87249号公報には焼嵌めまたは組立ロールを対象
としたものであり、圧延中に生ずる外層と軸材間の滑り
が問題となる。また、特開平1-96355 号公報は特殊な鋳
かけ肉盛法等、遠心力鋳造法以外の特殊な製造手法しか
適用できず、生産性、経済性の面で問題がある。Incidentally, Japanese Patent Laid-Open Nos. 58-87249 and 1-9635.
Japanese Unexamined Patent Application Publication No. 5 proposes a roll material to which cast steel and cast iron that are highly alloyed like high speed steel are applied. However, JP-A-58-87249 deals with shrink fitting or assembling rolls, and slippage between the outer layer and the shaft material during rolling poses a problem. Further, Japanese Patent Application Laid-Open No. 1-96355 can only be applied to a special manufacturing method other than the centrifugal force casting method such as a special cast overlay method, which causes problems in productivity and economy.
【０００６】即ち、圧延用ロールの製造に際し、ロール
外層にＶを多量に含有させることにより、耐摩耗性を著
しく向上させることは可能であるが、複合ロール製造時
に生産性、経済性が最も優れているとして一般に実施さ
れている遠心力鋳造法を採用した場合には、炭化物の遠
心分離を生じ所定の特性を均一に得られないという問題
点がある。That is, when a rolling roll is manufactured, it is possible to remarkably improve the wear resistance by adding a large amount of V to the outer layer of the rolling roll, but the productivity and the economical efficiency are most excellent at the time of manufacturing the composite roll. However, when the centrifugal casting method which is generally carried out is adopted, there is a problem in that carbides are centrifugally separated and predetermined characteristics cannot be obtained uniformly.
【０００７】本発明は、外層を形成する合金成分を適正
化し、炭化物組成を限定することにより、生産性、経済
性の優れた遠心力鋳造法を適用しても、偏析等の生じな
い耐摩耗性と耐クラック性の均一な圧延用ロール外層材
を提供することを目的とする。The present invention optimizes the alloy components forming the outer layer and limits the carbide composition, so that even if the centrifugal casting method, which is excellent in productivity and economy, is applied, segregation does not occur. An object of the present invention is to provide a roll outer layer material for rolling, which has uniform properties and crack resistance.
【０００８】[0008]
【課題を解決するための手段】本発明の圧延用ロール外
層材は、Ｃ：1.5 〜 3.5％，Ｓｉ：1.5 ％以下, Ｍｎ：
1.2％以下, Ｃｒ：5.5 〜12.0％，Ｍｏ：2.0 〜8.0
％，Ｖ：3.0 〜10.0％，Ｎｂ：0.6 〜7.0 ％を含有し、
且つ下記(1) 式と(2) 式を満足し、 Ｖ＋ 1.8Ｎｂ ≦ 7.5 Ｃ−6.0(％)…(1) 0.2 ≦ Ｎｂ／Ｖ ≦ 0.8 …(2) 残部Ｆｅ及び不可避的不純物よりなるようにしたもので
ある。The outer layer material for rolling of the present invention is C: 1.5 to 3.5%, Si: 1.5% or less, Mn:
1.2% or less, Cr: 5.5 to 12.0%, Mo: 2.0 to 8.0
%, V: 3.0 to 10.0%, Nb: 0.6 to 7.0%,
Further, the following formulas (1) and (2) are satisfied, and V + 1.8Nb ≤ 7.5 C-6.0 (%) ... (1) 0.2 ≤ Nb / V ≤ 0.8 ... (2) The balance is Fe and inevitable impurities. It is the one.
【０００９】[0009]
【作用】本発明における各合金元素の含有量の限定理由
及びＶ、Ｎｂ、Ｃ量の限定式について説明する。The reason for limiting the content of each alloying element and the limiting formula for the amounts of V, Nb, and C in the present invention will be described.
【００１０】Ｃ：1.5 ％〜3.5 ％ Ｃはロール外層材の耐摩耗性を向上する硬い炭化物を形
成するための必須元素で1.5 ％以上必要であるが、3.5
％を越えると耐クラック性が著しく低下するため上限を
3.5 ％とする。C: 1.5% to 3.5% C is an essential element for forming a hard carbide which improves the wear resistance of the outer layer material of the roll and is required to be 1.5% or more.
%, The crack resistance will drop significantly, so the upper limit is
3.5%
【００１１】Ｓｉ：1.5 ％以下 Ｓｉは脱酸剤及び鋳造性の確保のために添加するが、1.
5 ％を越えると耐クラック性を低下するため上限を1.5
％とする。Si: 1.5% or less Si is added to secure a deoxidizing agent and castability, but 1.
If it exceeds 5%, the crack resistance decreases, so the upper limit is 1.5.
%.
【００１２】Ｍｎ：1.2 ％以下 Ｍｎも上記Ｓｉと同様の目的で添加するが、1.2 ％を越
えると耐クラック性が低下するため好ましくなく上限を
1.2 ％とする。Mn: 1.2% or less Mn is also added for the same purpose as the above Si, but if it exceeds 1.2%, the crack resistance is deteriorated and the upper limit is not preferable.
1.2%
【００１３】Ｃｒ：5.5 〜12.0％ Ｃｒは炭化物を形成し、耐摩耗性を向上するために必要
な元素で5.5 ％以上添加するが、12.0％を越えると本発
明が対象とするＶ、Ｎｂを添加した場合には耐摩耗性が
劣化するため上限を12.0％とする。Cr: 5.5 to 12.0% Cr forms a carbide and is an element necessary for improving wear resistance, and is added in an amount of 5.5% or more. If it exceeds 12.0%, V and Nb targeted by the present invention are added. If added, the wear resistance deteriorates, so the upper limit is made 12.0%.
【００１４】Ｍｏ：2.0 〜8.0 ％ ＭｏはＣｒと同様に炭化物を形成して耐摩耗性の向上に
有効であるとともに、基地の焼入性、焼もどし軟化抵抗
を向上し、基地組織の強化に有効であるため2.0 ％以上
必要であるが、8.0 ％を越えると耐クラック性が低下す
るため、上限を8.0 ％とする。Mo: 2.0 to 8.0% Mo forms a carbide similarly to Cr and is effective in improving wear resistance, and also improves the hardenability and temper softening resistance of the matrix and strengthens the matrix structure. Since it is effective, 2.0% or more is required, but if it exceeds 8.0%, crack resistance deteriorates, so the upper limit is made 8.0%.
【００１５】Ｖ：3.0 〜10.0％、Ｎｂ：0.6 〜7.0 ％ Ｖ、Ｎｂは本発明における最も重要な必須元素であり、
これらの複合添加と含有量制限条件が本発明の最大の特
徴である。V: 3.0 to 10.0%, Nb: 0.6 to 7.0% V, Nb is the most important essential element in the present invention,
These combined additions and content limiting conditions are the greatest features of the present invention.
【００１６】Ｖは耐摩耗性の向上に最も有効な硬いＭＣ
またはＭ4 Ｃ3 炭化物を形成するための必須元素で、そ
の効果を発揮するためには3.0 ％以上必要であるが、1
0.0％を越えると耐クラック性の低下、製造上の問題を
生じるため上限を10.0％とする。V is a hard MC that is most effective in improving wear resistance.
Or, it is an essential element for forming M 4 C 3 carbide, and 3.0% or more is necessary to exert its effect.
If it exceeds 0.0%, the crack resistance lowers and manufacturing problems occur, so the upper limit is made 10.0%.
【００１７】ＮｂもＶ同様耐摩耗性に有効な硬いＭＣ炭
化物を形成するが単独添加では粗大な塊状炭化物となり
その効果が得られないだけでなく耐クラック性が問題と
なる。Nb, like V, forms hard MC carbides that are effective in wear resistance, but when added alone, it becomes coarse lump carbides, and this effect cannot be obtained, and crack resistance becomes a problem.
【００１８】そこでＶとＮｂを複合添加した場合の母材
硬さに及ぼすＣ量との関係、及び遠心力鋳造したリング
材の炭化物分布に起因する外層、内層間の熱間摩耗比、
熱衝撃試験におけるクラックの最大深さとＮｂ、Ｖの含
有量比Ｎｂ／Ｖとの関係を調べた結果をそれぞれ図１及
び図２に示す。Therefore, the relationship between the C content and the hardness of the base metal when V and Nb are added in combination, and the hot wear ratio between the outer layer and the inner layer due to the carbide distribution of the centrifugally cast ring material,
The results of examining the relationship between the maximum crack depth and the Nb / V content ratio Nb / V in the thermal shock test are shown in FIGS. 1 and 2, respectively.
【００１９】図１から耐摩耗熱間圧延用ロールとして必
要な硬さＨs 75以上を得るためには Ｖ＋1.8 Ｎｂ≦7.5 Ｃ−6.0 （％） を満足する必要があることが明らかとなった。From FIG. 1, it has been clarified that V + 1.8 Nb ≦ 7.5 C-6.0 (%) must be satisfied in order to obtain hardness Hs 75 or more required for the wear-resistant hot rolling roll. ..
【００２０】尚、図１の実験は、Ｓｉ：0.5 ％，Ｍｎ：
0.5 ％，Ｃｒ：6.8 ％，Ｍｏ：3.2％を含有し、Ｃ、Ｎ
ｂ、Ｖを変化した溶湯を鋳造した25mmＹブロックについ
て、1000℃焼ならし処理、550 ℃焼もどし処理を施した
試料を用いた。In the experiment of FIG. 1, Si: 0.5%, Mn:
Contains 0.5%, Cr: 6.8%, Mo: 3.2%, C, N
A 25 mm Y block obtained by casting a molten metal having different b and V was subjected to a normalizing treatment at 1000 ° C and a tempering treatment at 550 ° C.
【００２１】また、図２から遠心力鋳造法で製造した場
合にも均一な外層材を得ることができ、かつ耐クラック
性も損なわないためには 0.2 ≦Ｎｂ／Ｖ≦0.8 を満足する必要があることが明らかとなった。In addition, it is necessary to satisfy 0.2 ≤ Nb / V ≤ 0.8 in order to obtain a uniform outer layer material even when manufactured by the centrifugal casting method from Fig. 2 and not to impair the crack resistance. It became clear.
【００２２】尚、図２において、「摩耗比（内層／外
層）」は、リング材の内層側から採取した試験片の摩耗
量（Ｉw ）と外層側から採取した試験片の摩耗量（Ｏw
）との比（Ｉw ／Ｏw ）であり、「熱衝撃クラック最
大深さ」は、熱衝撃試験で発生したクラックの最大深さ
である。In FIG. 2, "wear ratio (inner layer / outer layer)" means the wear amount (Iw) of the test piece taken from the inner layer side of the ring material and the wear amount (Ow of the test piece taken from the outer layer side).
)), And the "maximum depth of thermal shock cracks" is the maximum depth of cracks generated in the thermal shock test.
【００２３】また、図２の実験は、Ｃ：2.5 ％，Ｓｉ：
0.5 ％，Ｍｎ：0.5 ％，Ｃｒ：6.5％，Ｍｏ：3.5 ％，
Ｖ：5.4 ％，Ｎｂ：0 〜8.0 ％を含有する溶湯を遠心力
鋳造（140 Ｇ）して得た肉厚100mm のリングサンプルに
ついて、1000℃焼ならし処理、550 ℃焼もどし処理を施
した試料を用いた。In the experiment of FIG. 2, C: 2.5%, Si:
0.5%, Mn: 0.5%, Cr: 6.5%, Mo: 3.5%,
A ring sample with a wall thickness of 100 mm obtained by centrifugal casting (140 G) of a molten metal containing V: 5.4% and Nb: 0 to 8.0% was subjected to normalizing treatment at 1000 ° C and tempering treatment at 550 ° C. A sample was used.
【００２４】そして、摩耗試験は、φ190 ×15の相手材
とφ50×10の試験材の２円盤のすべり摩耗方式で相手材
を800 ℃に加熱し、荷重100Kgfで圧接した状態で試験材
を800rpmで回転させ、すべり率3.9 ％として120 分後の
摩耗減量を測定して行なった。A wear test was conducted by heating the mating material to 800 ° C. by the sliding wear method of a 2 disk of φ190 × 15 mating material and φ50 × 10 test material, and pressing the test material at 800 rpm under a pressure of 100 Kgf. Rotation was performed at a slip rate of 3.9%, and the wear loss after 120 minutes was measured.
【００２５】また、熱衝撃試験は、1200rpm で回転して
いるローラーに55×40×15の板状試験片を圧接する方式
で、荷重150kgf、接触時間15ｓの条件で行ない、試験片
に発生したクラック長さを測定した。The thermal shock test was carried out by pressing a 55 × 40 × 15 plate test piece against a roller rotating at 1200 rpm under the conditions of a load of 150 kgf and a contact time of 15 s, and the test piece was generated. The crack length was measured.
【００２６】[0026]
【実施例】表１に示す化学組成の溶湯（本発明材：Ｂ〜
Ｆ、Ｒ、Ｓ、比較材：Ａ、Ｇ〜Ｑ）を遠心力鋳造法（14
0G）により鋳造し、肉厚100mm のリングサンプルを試作
し、ショアー硬さ、熱間摩耗及び熱衝撃試験を行なっ
た。EXAMPLE A molten metal having the chemical composition shown in Table 1 (material of the present invention: B to
F, R, S, comparative materials: A, G to Q) are centrifugally cast (14
A ring sample with a wall thickness of 100 mm was cast as a prototype and subjected to Shore hardness, hot wear and thermal shock tests.
【００２７】[0027]
【表１】 [Table 1]
【００２８】尚、摩耗試験は、リング材の内層側と外層
側からそれぞれφ50×10の試験片を採取し、前記条件と
同一の方法で行なった。The wear test was carried out by the same method as the above conditions by taking test pieces of φ50 × 10 from the inner layer side and the outer layer side of the ring material.
【００２９】また、熱衝撃試験は、リング材の外層側よ
り前記した板状試験片を採取し、同一の条件で行なっ
た。The thermal shock test was conducted under the same conditions by collecting the above-mentioned plate-shaped test piece from the outer layer side of the ring material.
【００３０】それら摩耗試験と熱衝撃試験の結果を表２
に示す。表２によれば、本発明材は従来のＮｉ−グレン
材（Ａ材）と比べ、硬さは同程度であるが、耐摩耗性、
耐クラック性ともに著しく向上していることが認められ
る。The results of the wear test and the thermal shock test are shown in Table 2.
Shown in. According to Table 2, the material of the present invention has the same hardness as the conventional Ni-Glen material (A material), but the wear resistance,
It is recognized that the crack resistance is significantly improved.
【００３１】[0031]
【表２】 [Table 2]
【００３２】また、比較材Ｇ〜Ｑ材は本発明の限定をは
ずれているため、Ｇ材は炭化物の偏析で外層の耐摩耗性
が低下し、Ｈ材については硬さが不足しているとともに
耐クラック性が低下し、Ｉ材については硬さの不足とと
もに炭化物の偏析で外層の耐摩耗性が低下し、Ｊ材につ
いては硬さが不足している。また、Ｋ材はＣ量が過多で
あるため耐クラック性が低下し、Ｌ材はＳｉ量が過多で
あるため耐クラック性が低下し、Ｍ材はＭｎ量が過多で
あるため耐クラック性が低下し、Ｎ材はＣｒ量が過多で
あるため耐摩耗性、耐クラック性が低下し、Ｏ材はＭｏ
量が過多であるため耐クラック性が低下し、Ｐ材はＶ量
が不足しているため耐摩耗性、耐クラック性が低下し、
Ｑ材はＶ量が過多であるため耐クラック性が低下してい
る。Further, since the comparative materials G to Q deviate from the limitation of the present invention, segregation of the carbide causes the wear resistance of the outer layer of the G material to be deteriorated, and the hardness of the H material is insufficient. The crack resistance is lowered, the hardness of I material is insufficient, and the wear resistance of the outer layer is reduced due to the segregation of carbides, and the hardness of J material is insufficient. In addition, the K material has an excessive amount of C and thus has low crack resistance, the L material has an excessive amount of Si, and therefore has poor crack resistance, and the M material has an excessive amount of Mn and therefore has an excellent crack resistance. When the N material has an excessive amount of Cr, the wear resistance and crack resistance are reduced, and the O material is Mo.
Since the amount is too large, the crack resistance is reduced, and the P material is insufficient in the V amount, so the wear resistance and crack resistance are reduced.
Since the V material has an excessive V content, the crack resistance is deteriorated.
【００３３】[0033]
【発明の効果】以上のように本発明によれば、生産性、
経済性の優れた遠心力鋳造法を適用しても、偏析等の生
じない耐摩耗性と耐クラック性に優れた圧延用ロール外
層材を得ることができる。As described above, according to the present invention, productivity,
Even if the centrifugal casting method which is excellent in economic efficiency is applied, it is possible to obtain a rolling roll outer layer material which is free from segregation and has excellent wear resistance and crack resistance.
【図１】図１はＶとＮｂの複合添加量とＣ量とが母材硬
さに及ぼす影響を示す線図である。FIG. 1 is a diagram showing the effect of the combined addition amount of V and Nb and the C amount on the hardness of a base material.
【図２】図２は遠心力鋳造したリング材の炭化物分布に
起因する外層と内層間の熱間摩耗比と、熱衝撃試験にお
けるクラック最大深さに及ぼすＮｂとＶの含有量比Ｎｂ
／Ｖの影響を示す線図である。FIG. 2 is a hot wear ratio between an outer layer and an inner layer due to a carbide distribution of a centrifugally cast ring material, and a Nb and V content ratio Nb which affects the maximum crack depth in a thermal shock test.
It is a diagram which shows the influence of / V.
Claims (1)
Ｍｎ： 1.2％以下,Ｃｒ：5.5 〜12.0％，Ｍｏ：2.0 〜
8.0 ％，Ｖ：3.0 〜10.0％，Ｎｂ：0.6 〜7.0 ％を含有
し、且つ下記(1) 式と(2) 式を満足し、 Ｖ＋ 1.8Ｎｂ ≦ 7.5 Ｃ−6.0(％)…(1) 0.2 ≦ Ｎｂ／Ｖ ≦ 0.8 …(2) 残部Ｆｅ及び不可避的不純物よりなる圧延用ロール外層
材。[Claims] [Claim 1] C: 1.5 to 3.5%, Si: 1.5% or less,
Mn: 1.2% or less, Cr: 5.5 to 12.0%, Mo: 2.0 to
It contains 8.0%, V: 3.0 to 10.0%, Nb: 0.6 to 7.0%, and satisfies the following formulas (1) and (2), V + 1.8Nb ≤ 7.5 C-6.0 (%) ... (1) 0.2 ≤ Nb / V ≤ 0.8 (2) An outer layer material for a rolling roll comprising the balance Fe and unavoidable impurities.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/050,394 US5316596A (en) | 1991-09-12 | 1992-03-31 | Roll shell material and centrifugal cast composite roll |
| KR1019930701420A KR960005598B1 (en) | 1991-09-12 | 1992-03-31 | Roll shell material and centrifugal cast composite roll |
| PCT/JP1992/000400 WO1993005192A1 (en) | 1991-09-12 | 1992-03-31 | Material of outer layer of roll for rolling and compound roll manufactured by centrifugal casting |
| EP92907591A EP0562114B1 (en) | 1991-09-12 | 1992-03-31 | Material of outer layer of roll for rolling and compound roll manufactured by centrifugal casting |
| DE69227504T DE69227504T2 (en) | 1991-09-12 | 1992-03-31 | MATERIAL FOR EXTERNAL LAYER OF A FORMING ROLLER AND COMPOSITE ROLLER PRODUCED BY SPINNING |
| ES92909738T ES2124728T3 (en) | 1991-09-12 | 1992-05-14 | MATERIAL FOR THE OUTER LAYER OF A LAMINATION CYLINDER AND COMPOSITE CYLINDER MANUFACTURED BY CENTRIFUGA FOUNDRY. |
| EP92909738A EP0559899B1 (en) | 1991-09-12 | 1992-05-14 | Material of outer layer of roll for rolling and compound roll manufactured by centrifugal casting |
| PCT/JP1992/000625 WO1993005193A1 (en) | 1991-09-12 | 1992-05-14 | Material of outer layer of roll for rolling and compound roll manufactured by centrifugal casting |
| CN 92103692 CN1032262C (en) | 1991-09-12 | 1992-05-16 | Outer material of roll and composite roll of centrifugal casting |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31420790 | 1990-11-21 | ||
| JP2-314207 | 1990-11-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH051350A true JPH051350A (en) | 1993-01-08 |
| JP2715205B2 JP2715205B2 (en) | 1998-02-18 |
Family
ID=18050568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30383291A Expired - Lifetime JP2715205B2 (en) | 1990-11-21 | 1991-10-24 | Roll outer layer material for rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2715205B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0698670A1 (en) | 1994-06-29 | 1996-02-28 | Kawasaki Steel Corporation | Roll outer layer material for hot rolling and method of manufacturing roll for hot rolling |
| WO2013057914A1 (en) | 2011-10-19 | 2013-04-25 | Ｊｆｅスチール株式会社 | Roll surface-layer material for hot rolling with excellent fatigue resistance produced by centrifugal casting, and composite roll for hot rolling produced through centrifugal casting |
| WO2014132628A1 (en) | 2013-03-01 | 2014-09-04 | Ｊｆｅスチール株式会社 | Roll outer layer material, and composite roll for hot rolling |
| JPWO2013042528A1 (en) * | 2011-09-21 | 2015-03-26 | 日立金属株式会社 | Centrifugal cast composite roll for hot rolling and manufacturing method thereof |
| WO2018043534A1 (en) | 2016-09-02 | 2018-03-08 | Ｊｆｅスチール株式会社 | Roll outer layer material for rolling, and composite roll for rolling |
| CN109317520A (en) * | 2018-11-23 | 2019-02-12 | 枣庄瑞兴机械制造有限公司 | Composite roll set and its manufacturing method for pipe-mill |
| KR20190029716A (en) | 2016-09-07 | 2019-03-20 | 제이에프이 스틸 가부시키가이샤 | Roll roll for hot rolling and composite roll for hot rolling |
| WO2020110660A1 (en) | 2018-11-28 | 2020-06-04 | Ｊｆｅスチール株式会社 | Roll outer layer material to be hot-rolled, and composite roll to be hot-rolled |
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| CN102581246B (en) * | 2011-01-07 | 2013-10-30 | 关润雄 | Process for manufacturing fluted disc for roll crusher |
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1991
- 1991-10-24 JP JP30383291A patent/JP2715205B2/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0698670A1 (en) | 1994-06-29 | 1996-02-28 | Kawasaki Steel Corporation | Roll outer layer material for hot rolling and method of manufacturing roll for hot rolling |
| JPWO2013042528A1 (en) * | 2011-09-21 | 2015-03-26 | 日立金属株式会社 | Centrifugal cast composite roll for hot rolling and manufacturing method thereof |
| US9975158B2 (en) | 2011-10-19 | 2018-05-22 | Jfe Steel Corporation | Roll surface layer material for hot rolling with excellent fatigue resistance produced by centrifugal casting, and composite roll for hot rolling produced through centrifugal casting |
| WO2013057914A1 (en) | 2011-10-19 | 2013-04-25 | Ｊｆｅスチール株式会社 | Roll surface-layer material for hot rolling with excellent fatigue resistance produced by centrifugal casting, and composite roll for hot rolling produced through centrifugal casting |
| KR20140078739A (en) | 2011-10-19 | 2014-06-25 | 제이에프이 스틸 가부시키가이샤 | Roll surface-layer material for hot rolling with excellent fatigue resistance produced by centrifugal casting, and composite roll for hot rolling produced through centrifugal casting |
| WO2014132628A1 (en) | 2013-03-01 | 2014-09-04 | Ｊｆｅスチール株式会社 | Roll outer layer material, and composite roll for hot rolling |
| US9708695B2 (en) | 2013-03-01 | 2017-07-18 | Jfe Steel Corporation | Roll outer layer material, and composite roll for hot rolling |
| WO2018043534A1 (en) | 2016-09-02 | 2018-03-08 | Ｊｆｅスチール株式会社 | Roll outer layer material for rolling, and composite roll for rolling |
| KR20190035834A (en) | 2016-09-02 | 2019-04-03 | 제이에프이 스틸 가부시키가이샤 | Rolled roll outer material and rolled composite roll |
| KR20190029716A (en) | 2016-09-07 | 2019-03-20 | 제이에프이 스틸 가부시키가이샤 | Roll roll for hot rolling and composite roll for hot rolling |
| CN109317520A (en) * | 2018-11-23 | 2019-02-12 | 枣庄瑞兴机械制造有限公司 | Composite roll set and its manufacturing method for pipe-mill |
| WO2020110660A1 (en) | 2018-11-28 | 2020-06-04 | Ｊｆｅスチール株式会社 | Roll outer layer material to be hot-rolled, and composite roll to be hot-rolled |
| KR20210082226A (en) | 2018-11-28 | 2021-07-02 | 제이에프이 스틸 가부시키가이샤 | Outer layer material for hot rolling and composite roll for hot rolling |
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| Publication number | Publication date |
|---|---|
| JP2715205B2 (en) | 1998-02-18 |
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