JP2000254715A - Material for rolling roll - Google Patents
Material for rolling rollInfo
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- JP2000254715A JP2000254715A JP11062505A JP6250599A JP2000254715A JP 2000254715 A JP2000254715 A JP 2000254715A JP 11062505 A JP11062505 A JP 11062505A JP 6250599 A JP6250599 A JP 6250599A JP 2000254715 A JP2000254715 A JP 2000254715A
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、圧延ロール用材に
関する。[0001] The present invention relates to a material for a rolling roll.
【０００２】[0002]
【従来の技術】熱間圧延ロールの外層部用の材料とし
て、Ｃｒ、Ｍｏ、Ｗ、Ｖ等の合金元素を含有した高合金
鋳鉄が従来より用いられている。前記合金元素はＣとの
親和力がＦｅより強く、凝固過程でＭＣ、Ｍ７Ｃ３、Ｍ
６Ｃ等の硬質一次炭化物を形成する。過去の技術におい
ては、ロール外層部の耐摩耗性を高めるために、前記の
ような硬質一次炭化物を形成する合金元素の組成により
炭化物量を増やす方法を採用していた。2. Description of the Related Art High alloy cast iron containing alloy elements such as Cr, Mo, W and V has been conventionally used as a material for an outer layer portion of a hot rolling roll. The alloying element has a higher affinity for C than Fe, and MC, M 7 C 3 , M
Forming hard primary carbides such as 6 C. In the past, in order to improve the wear resistance of the outer layer of the roll, a method of increasing the amount of carbide by the composition of the alloy element forming the hard primary carbide as described above has been adopted.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、組織中
の硬質一次炭化物を増加させることは、耐摩耗性の向上
には有効であるものの、靱性の低下を招き、耐クラック
性（耐事故性）の低下につながる問題があり、よって、
むやみに硬質一次炭化物を増せないという問題があっ
た。即ち、熱間或いは冷間でのロールの耐クラック性を
向上させるためには、ロール材の靱性を向上させること
が重要となる。このため最近では、熱処理により基地組
成中に微細な二次炭化物を析出させ、ロールの耐摩耗性
を高めようとする試みがなされるようになってきてい
る。基地組織の硬度を高める方法として、例えばＣｏの
添加が有効であるが、Ｃｏの添加は焼き入れ能を低下さ
せる。更に、圧延における絞り込み事故の発生を減少さ
せるためには、ロール材が低熱膨張率であることが重要
となる。以上のように、熱間圧延用材として要求される
重要な性能は、耐摩耗性、高靱性等による耐クラック
性、低熱膨張率であるが、そのような３つの性能を兼ね
備えたロール用材料は現時点において未だ提供されてい
ない。However, although increasing the amount of hard primary carbides in the structure is effective in improving wear resistance, it leads to a decrease in toughness and lowers crack resistance (accident resistance). There is a problem that leads to decline,
There was a problem that hard primary carbides could not be increased unnecessarily. That is, in order to improve the crack resistance of the roll during hot or cold, it is important to improve the toughness of the roll material. For this reason, recently, attempts have been made to precipitate fine secondary carbides in the matrix composition by heat treatment to increase the wear resistance of the roll. As a method for increasing the hardness of the base structure, for example, the addition of Co is effective, but the addition of Co lowers the quenching ability. Furthermore, it is important that the roll material has a low coefficient of thermal expansion in order to reduce the occurrence of a drawing accident in rolling. As described above, important properties required as a material for hot rolling are abrasion resistance, crack resistance due to high toughness, and a low coefficient of thermal expansion. Not yet provided at this time.
【０００４】そこで、本発明は上記の圧延ロール用材に
における問題を解消し、耐摩耗性、高靱性等による耐ク
ラック性及び低熱膨張率に優れた、よって熱間或いは冷
間圧延ロールの外層部用材料として優れた圧延ロール用
材の提供を課題とする。Accordingly, the present invention solves the above-mentioned problems in the roll material, and has excellent crack resistance due to wear resistance, high toughness, etc., and a low coefficient of thermal expansion. It is an object of the present invention to provide an excellent material for a rolling roll as an application material.
【０００５】[0005]
【課題を解決するための手段】上記課題に対して、熱間
或いは冷間圧延ロールの耐摩耗性の向上は、上記したよ
うにＣｏの添加により焼き戻し時に析出する二次炭化物
量を増大させることで行うことができる。そして耐クラ
ック性の向上に関しては、Ｃｏを添加した場合には焼き
戻し温度をより高温で実施しても硬度低下が少ないた
め、残留応力を低減させることが可能となり、よって耐
クラック性の向上も達成できることが解かった。またＣ
ｏを添加した場合に問題となる焼き入れ能の低下につい
ては、Ｎｉの適量添加により改善できることが解かっ
た。特に、本発明者はＹを適量添加することにより基地
硬さを向上させ、且つ熱膨張率を低下させることができ
ることを見出した。In order to solve the above-mentioned problems, improvement of the wear resistance of a hot or cold rolling roll increases the amount of secondary carbide precipitated during tempering by the addition of Co as described above. That can be done. Regarding the improvement of the crack resistance, when Co is added, even if the tempering temperature is higher, the reduction in hardness is small, so that the residual stress can be reduced. I understand what can be achieved. Also C
It has been found that the decrease in quenching ability, which becomes a problem when o is added, can be improved by adding an appropriate amount of Ni. In particular, the present inventors have found that by adding an appropriate amount of Y, the base hardness can be improved and the coefficient of thermal expansion can be reduced.
【０００６】即ち本発明の圧延ロール用材は、重量パー
セントで、Ｃ：１．５〜３．０％、Ｓｉ：０．３〜２．
５％、Ｍｎ：０．３〜１．０％、Ｃｒ：２．０〜１０．
０％、Ｍｏ：２．０〜８．０％、Ｗ：２．０〜８．０
％、Ｖ：２．０〜８．０％、Ｃｏ：３．０〜１０．０
％、Ｎｉ：１．０〜４．０％、Ｙ：１．０〜１０．０％
を含有し、残部が実質的にＦｅから成ることを第１の特
徴としている。また本発明の圧延ロール用材は、上記第
１の特徴に加えて、熱間又は冷間圧延ロールの外層部材
として用いられることを第２の特徴としている。That is, the material for the rolling roll of the present invention is, by weight percent, C: 1.5-3.0%, Si: 0.3-2.
5%, Mn: 0.3-1.0%, Cr: 2.0-10.
0%, Mo: 2.0 to 8.0%, W: 2.0 to 8.0
%, V: 2.0 to 8.0%, Co: 3.0 to 10.0
%, Ni: 1.0 to 4.0%, Y: 1.0 to 10.0%
And the balance is substantially made of Fe. Further, in addition to the above-described first feature, the roll roll material of the present invention has a second feature that it is used as an outer layer member of a hot or cold roll.
【０００７】上記本発明の特徴によれば、該特徴におい
て限定された成分組成の材料を用いることにより、鋳放
し状態の組織において、硬質の一次炭化物の量を適当に
抑制することができると共に、これを焼き戻すことで、
微細な二次炭化物を析出させて基地を十分に強化するこ
とができる。これによって、特に熱間での耐摩耗性を高
めることができると共に、耐クラック性を向上させるこ
とができる。また硬質の粗大一次炭化物量も適当に抑制
できるので、耐肌荒性を良好に維持できる。加えて、Ｙ
の適量添加により基地硬さの向上の他、熱膨張率を適当
に低下させることができ、熱間圧延時において被圧延材
に絞り込み事故が発生したりするのを軽減して、良好な
熱間圧延を確保することが可能となる。勿論、冷間圧延
ロールとしても十分な耐摩耗性等を備えたものとするこ
とができる。According to the above-mentioned feature of the present invention, by using a material having a component composition limited in the above-mentioned feature, the amount of hard primary carbide can be appropriately suppressed in an as-cast structure. By tempering this,
The matrix can be sufficiently strengthened by precipitating fine secondary carbides. As a result, it is possible to improve the wear resistance, particularly during hot working, and also to improve the crack resistance. In addition, the amount of hard coarse primary carbides can be appropriately suppressed, so that the skin resistance can be maintained satisfactorily. In addition, Y
In addition to improving the base hardness by adding an appropriate amount of, the coefficient of thermal expansion can be appropriately reduced, and the occurrence of squeezing accidents in the material to be rolled during hot rolling can be reduced. Rolling can be ensured. Needless to say, a cold rolling roll having sufficient wear resistance and the like can be used.
【０００８】本発明における各成分元素の含有範囲の限
定理由について説明する。The reason for limiting the content range of each component element in the present invention will be described.
【０００９】Ｃの含有量は１．５重量％以上で３．０重
量％以下とする。Ｃは鋳鉄を構成する主要元素であると
共に、ロールに耐摩耗性を付与するＭＣ、Ｍ７Ｃ３、Ｍ
６Ｃ等の硬質炭化物を形成するためには不可欠な元素で
ある。Ｃが１．５重量％未満では炭化物の生成量が少な
く耐摩耗性が低くなる。一方、３．０重量％を超えると
逆に炭化物量が増え過ぎ、靭性を低下させる。The content of C is 1.5% by weight or more and 3.0% by weight or less. C is a main element constituting the cast iron, and MC, M 7 C 3 , M for imparting wear resistance to the roll.
It is an indispensable element for forming a hard carbide such as 6 C. If C is less than 1.5% by weight, the amount of carbide generated is small and the wear resistance is low. On the other hand, if it exceeds 3.0% by weight, on the contrary, the amount of carbides will increase too much, and the toughness will decrease.
【００１０】Ｓｉの含有量は０．３重量％以上で２．５
重量％以下とする。Ｓｉは鋳造性を改善し、また脱酸剤
として０．３重量％以上必要である。２．５重量％を超
えると基地の靭性を低下させる。The content of Si is not less than 0.3% by weight and not more than 2.5%.
% By weight or less. Si improves castability and requires at least 0.3% by weight as a deoxidizing agent. If it exceeds 2.5% by weight, the toughness of the matrix is reduced.
【００１１】Ｍｎの含有量は０．３重量％以上で１．０
重量％以下とする。Ｍｎは脱酸剤として有効であると共
に、Ｓと化合物ＭｎＳを形成し、Ｓの悪影響を除外す
る。０．３重量％未満ではこれらの効果が少なく、逆に
１．０重量％を超えてもその効果はほとんど変わらず、
むしろ偏析による靭性の低下を招く。The content of Mn is not less than 0.3% by weight and not more than 1.0%.
% By weight or less. Mn is effective as a deoxidizing agent, forms a compound MnS with S, and excludes the adverse effects of S. When the content is less than 0.3% by weight, these effects are small. On the contrary, when the content exceeds 1.0% by weight, the effect is hardly changed.
Rather, the toughness is reduced due to segregation.
【００１２】Ｃｒの含有量は２．０重量％以上で１０．
０重量％以下とする。Ｃｒは耐摩耗性を向上させる硬質
炭化物を構成する主要元素であると共に、基地硬度の向
上にも不可欠な元素であり、２．０重量％は必要であ
る。１０．０重量％を超えると炭化物量が増え過ぎ、靭
性の低下を招く。The content of Cr is 2.0% by weight or more.
0% by weight or less. Cr is a main element constituting the hard carbide for improving the wear resistance, and is also an essential element for improving the base hardness, and 2.0% by weight is necessary. If it exceeds 10.0% by weight, the amount of carbides will increase too much, leading to a decrease in toughness.
【００１３】Ｍｏは２．０重量％以上で８．０重量％以
下とする。ＭｏはＭ６Ｃ、Ｍ２Ｃ等の炭化物を形成し、
特に高温硬度を高めるため耐摩耗性の向上に役立つ。
２．０重量％未満では効果が少なく、８．０重量％を超
えると炭化物量が多くなり靭性が低下する。Mo is set to 2.0% by weight or more and 8.0% by weight or less. Mo forms carbides such as M 6 C and M 2 C,
In particular, it is useful for improving abrasion resistance to increase the high-temperature hardness.
If the content is less than 2.0% by weight, the effect is small, and if it exceeds 8.0% by weight, the amount of carbides increases and the toughness decreases.
【００１４】Ｗは２．０重量％以上で８．０重量％以下
とする。ＷはＭｏと同様の効果があり、Ｍ６Ｃ、Ｍ２Ｃ
等の炭化物を形成し、特に高温硬度を高めることから耐
摩耗性の向上に役立つ。２．０重量％未満では効果が少
なく、８．０重量％を超えると炭化物量が多くなり靭性
が低下する。[0014] W is not less than 2.0% by weight and not more than 8.0% by weight. W has the same effect as Mo, and M 6 C, M 2 C
And the like, and is particularly useful for improving wear resistance because of increasing the high-temperature hardness. If the content is less than 2.0% by weight, the effect is small, and if it exceeds 8.0% by weight, the amount of carbides increases and the toughness decreases.
【００１５】Ｖは２．０重量％以上で８．０重量％以下
とする。ＶはＭＣ炭化物を構成する主要元素であり、他
の炭化物より硬度が高く耐摩耗性の向上に有効である。
２．０重量％未満ではＭＣ炭化物量が少なく、耐摩耗性
が低い。逆に８．０重量％を超えると炭化物量が多くな
ると共に、形状が粒状から棒状に変化するためクラック
発生に対し弱くなり、靭性が低下する。V is not less than 2.0% by weight and not more than 8.0% by weight. V is a main element constituting MC carbide and has higher hardness than other carbides and is effective in improving wear resistance.
If it is less than 2.0% by weight, the amount of MC carbide is small and the wear resistance is low. Conversely, if the content exceeds 8.0% by weight, the amount of carbides increases, and the shape changes from granular to rod-like.
【００１６】Ｃｏは３．０重量％以上で１０．０重量％
以下とする。Ｃｏは基地中に固溶し、基地硬度の向上と
共に、高温でのＣｒ、Ｍｏ等の炭化物形成元素の基地中
への固溶量を増大させる効果がある。これにより焼き戻
し時に多量の二次炭化物を析出させることが可能とな
り、耐摩耗性を向上させることができる。３．０重量％
未満ではその効果はほとんどなく、逆に１０．０重量％
を超えて添加してもその効果は飽和する。Co is not less than 3.0% by weight and 10.0% by weight
The following is assumed. Co forms a solid solution in the matrix, and has an effect of improving the hardness of the matrix and increasing the solid solution amount of carbide forming elements such as Cr and Mo in the matrix at a high temperature. This makes it possible to precipitate a large amount of secondary carbide during tempering, thereby improving wear resistance. 3.0% by weight
If it is less than 10, there is almost no effect, and on the contrary, 10.0% by weight
The effect is saturated even if it is added in excess of.
【００１７】Ｎｉは１．０重量％以上で４．０重量％以
下とする。Ｎｉは焼き入れ性を向上させるために添加す
る。前記Ｃｏは基地硬度の向上と二次炭化物量を増やす
効果がある反面、焼き入れ能を低下させるため、焼き入
れ温度より急速に冷却しないと基地がマルテンサイト変
態またはベーナイト変態を起こさず、一部または全部が
パーライト組織となり、基地硬さを著しく低下させる。
ＮｉはＣｏ添加により低下した焼き入れ能を改善するの
に有効である。Ｎｉが１．０重量％未満ではその効果が
ほとんどなく、一方、４．０重量％を超えると残留オー
ステナイトが安定となり、逆に硬度低下を引き起こす。The content of Ni is not less than 1.0% by weight and not more than 4.0% by weight. Ni is added to improve hardenability. Although the Co has the effect of improving the base hardness and increasing the amount of secondary carbide, the base does not undergo martensitic transformation or bainite transformation unless cooled rapidly than the quenching temperature, in order to reduce the quenching ability. Alternatively, all of them have a pearlite structure and significantly reduce the base hardness.
Ni is effective in improving the quenching ability that has been reduced by the addition of Co. If Ni is less than 1.0% by weight, the effect is almost negligible, while if it exceeds 4.0% by weight, retained austenite becomes stable and conversely causes a decrease in hardness.
【００１８】Ｙは１．０重量％以上で１０．０重量％以
下とする。Ｙは一部基地中に固溶すると共に鉄及びその
他の金属と金属間化合物を形成して基地を硬くし、また
熱膨張率を低下させる。Ｙが１．０重量％未満ではその
効果がほとんどなく、１０．０重量％を超えると鉄との
化合物が増加するため基地の靭性を低下させる。好まし
くは、Ｙを３．０〜７．０％含有させることにより最も
効果が得られる。Y is from 1.0% by weight to 10.0% by weight. Y forms a solid solution in the matrix and forms an intermetallic compound with iron and other metals to harden the matrix and reduce the coefficient of thermal expansion. When Y is less than 1.0% by weight, the effect is hardly obtained, and when it exceeds 10.0% by weight, the compound with iron increases, so that the toughness of the matrix decreases. Preferably, the most advantageous effect can be obtained by containing 3.0 to 7.0% of Y.
【００１９】上記のような成分組成とした本発明の材料
は、一旦鋳込んだ後、１０００℃以上１２００℃以下の
温度から焼き入れ、５００℃以上６００℃以下の温度で
焼き戻して使用に供する。The material of the present invention having the above-mentioned composition is cast, quenched from a temperature of 1000 ° C. to 1200 ° C., and tempered at a temperature of 500 ° C. to 600 ° C. for use. .
【００２０】[0020]
【実施例】Ｙの添加による効果を明らかにするため、図
１に示す目標成分にて３５ｍｍφ×１００ｍｍ長さの供
試材を鋳込み、その後１１００℃で３０分間保持後、室
温まで約１０分で冷却し、５５０℃で１時間の焼き戻し
を行った。そして３０ｍｍφ×１０ｍｍの試験片を５種
類（Ｙの含有量が異なる）採取し、高温硬さ、熱膨張率
を測定した。尚、実施例１〜３が本発明の実施材で、比
較例１〜２は本発明の範囲を外れた例である。EXAMPLE In order to clarify the effect of the addition of Y, a test material having a length of 35 mmφ × 100 mm was cast with the target components shown in FIG. 1 and then kept at 1100 ° C. for 30 minutes and then allowed to reach room temperature in about 10 minutes. It was cooled and tempered at 550 ° C. for 1 hour. Then, five types of test pieces of 30 mmφ × 10 mm (having different Y contents) were sampled, and the high-temperature hardness and the coefficient of thermal expansion were measured. In addition, Examples 1 to 3 are examples of the present invention, and Comparative Examples 1 and 2 are examples outside the scope of the present invention.
【００２１】高温硬さ、熱膨張率の測定結果を図２、図
３に示す。Ｙの含有量が０の比較例１では高温での硬さ
が低く、熱膨張率も高い。またＹの含有量が０．５重量
％の比較例２においても、高温での硬さの向上がなく、
熱膨張率も高いままである。一方、Ｙの含有量が１重量
％以上の実施例１（１重量％）、実施例２（７重量
％）、実施例３（１０重量％）では、高温での硬さが向
上しており、熱膨張率も低くなっている。そして高温硬
度及び熱膨張率の向上の程度はＹが１重量％から１０重
量％に増加するにつれて良くなっていることがわかる。The measurement results of the hardness at high temperature and the coefficient of thermal expansion are shown in FIGS. In Comparative Example 1 in which the Y content is 0, the hardness at high temperatures is low and the coefficient of thermal expansion is high. Also in Comparative Example 2 in which the content of Y was 0.5% by weight, there was no improvement in hardness at high temperatures,
The coefficient of thermal expansion remains high. On the other hand, in Examples 1 (1% by weight), Example 2 (7% by weight), and Example 3 (10% by weight) in which the content of Y is 1% by weight or more, the hardness at high temperatures is improved. , The coefficient of thermal expansion is also low. It can be seen that the degree of improvement in high-temperature hardness and coefficient of thermal expansion improves as Y increases from 1% by weight to 10% by weight.
【００２２】[0022]
【発明の効果】本発明は以上の構成、作用よりなり、請
求項１、２に記載の各圧延ロール用材によれば、該特徴
において限定された成分組成の材料を用いることによ
り、鋳放し状態の組織において、Ｃｒ、Ｍｏ、Ｗ、Ｖの
含有量を適当に抑えることで硬質の一次炭化物の量を適
当に抑制することができると共に、Ｃｏを適当に加える
ことで微細な二次炭化物を析出させて基地を十分に強化
することができ、しかもＮｉの適当量を併せて含有させ
ることで、焼き入れ能の低下を解消することができ、よ
って熱間圧延での耐摩耗性を十分に高めることができる
と共に、耐クラック性も十分に向上させることが可能と
なった。勿論、耐肌荒性を良好に維持でき、冷間圧延に
も適している。特に本発明では、Ｙの適量添加により、
基地硬さの向上はもとより、材料の熱膨張率を十分に低
下させることができ、よって熱間圧延時における被圧延
材の絞り込み現象を十分効果的に抑制することが可能と
なった。これによって、良好な熱間圧延を確保できる
他、被圧延材の歩留まりの向上、前記絞り込み事故によ
る圧延ロールの損傷や補修等に係るコストの低減が可能
となった。The present invention has the above-described structure and operation. According to the rolling material for rolls according to the first and second aspects, the as-cast condition is obtained by using a material having a component composition limited in the above characteristics. In the microstructure, the amount of hard primary carbides can be appropriately suppressed by appropriately controlling the contents of Cr, Mo, W, and V, and fine secondary carbides can be precipitated by appropriately adding Co. In this way, the matrix can be sufficiently strengthened, and by additionally containing an appropriate amount of Ni, the decrease in quenching ability can be eliminated, and thus the wear resistance in hot rolling can be sufficiently increased. And the crack resistance can be sufficiently improved. Of course, the surface roughness resistance can be maintained well, and it is suitable for cold rolling. In particular, in the present invention, by adding an appropriate amount of Y,
In addition to the improvement in the base hardness, the coefficient of thermal expansion of the material can be sufficiently reduced, so that the phenomenon of narrowing down the material to be rolled during hot rolling can be sufficiently effectively suppressed. As a result, good hot rolling can be ensured, the yield of the material to be rolled can be improved, and costs related to damage and repair of the rolling roll due to the squeezing accident can be reduced.
【図１】実施例１〜３に示す本発明の実施材と、比較例
１〜２に示す比較材とにおける成分とその目標含有量を
示す図である。FIG. 1 is a diagram showing components and target contents thereof in working materials of the present invention shown in Examples 1 to 3 and comparative materials shown in Comparative Examples 1 and 2.
【図２】実施例１〜３、比較例１〜２での高温硬度の測
定結果を示す図である。FIG. 2 is a diagram showing measurement results of high-temperature hardness in Examples 1 to 3 and Comparative Examples 1 and 2.
【図３】実施例１〜３、比較例１〜２での熱膨張率の測
定結果を示す図である。FIG. 3 is a diagram showing measurement results of the coefficient of thermal expansion in Examples 1 to 3 and Comparative Examples 1 and 2.
フロントページの続き (72)発明者 前川 敏郎 兵庫県姫路市大津区吉美403 虹技株式会 社姫路西工場内 (72)発明者 牛込 智章 兵庫県姫路市大津区勘兵衛町３丁目12 虹 技株式会社姫路東工場内 Ｆターム(参考） 4E016 AA02 CA09 EA02 EA06 FA01Continued on the front page (72) Inventor Toshiro Maekawa 403 Yoshimi Otsu-ku, Otsu-ku, Himeji-shi, Hyogo Pref. Inside the Himeji-Nishi Plant, (72) Inventor Tomoaki Ushigome 3--12 Kanbei-cho, Otsu-ku, Himeji-shi, Hyogo Niji Himeji Co., Ltd. F term in the East factory (reference) 4E016 AA02 CA09 EA02 EA06 FA01
Claims (2)
る圧延ロール用材。1. C: 1.5 to 3.0% Si: 0.3 to 2.5% Mn: 0.3 to 1.0% Cr: 2.0 to 10.0% Mo by weight percent : 2.0 to 8.0% W: 2.0 to 8.0% V: 2.0 to 8.0% Co: 3.0 to 10.0% Ni: 1.0 to 4.0% Y : A material for rolling rolls, containing 1.0 to 10.0% and the balance substantially consisting of Fe.
て用いられることを特徴とする請求項１に記載の圧延ロ
ール用材。2. The material for a rolling roll according to claim 1, wherein the material is used as an outer layer member of a hot or cold rolling roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6250599A JP2999472B1 (en) | 1999-03-10 | 1999-03-10 | Roll material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6250599A JP2999472B1 (en) | 1999-03-10 | 1999-03-10 | Roll material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2999472B1 JP2999472B1 (en) | 2000-01-17 |
| JP2000254715A true JP2000254715A (en) | 2000-09-19 |
Family
ID=13202112
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6250599A Expired - Fee Related JP2999472B1 (en) | 1999-03-10 | 1999-03-10 | Roll material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004183085A (en) * | 2002-12-06 | 2004-07-02 | Hitachi Metals Ltd | Roll for rolling |
| WO2013041559A1 (en) * | 2011-09-19 | 2013-03-28 | Sandvik Intellectual Property Ab | A roll for hot rolling |
| WO2013041558A1 (en) * | 2011-09-19 | 2013-03-28 | Sandvik Intellectual Property Ab | A method for producing high speed steel |
| WO2015181852A1 (en) * | 2014-05-28 | 2015-12-03 | 日鉄住金ハード株式会社 | Rolls of winding equipment in hot-rolling factory |
-
1999
- 1999-03-10 JP JP6250599A patent/JP2999472B1/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004183085A (en) * | 2002-12-06 | 2004-07-02 | Hitachi Metals Ltd | Roll for rolling |
| WO2013041559A1 (en) * | 2011-09-19 | 2013-03-28 | Sandvik Intellectual Property Ab | A roll for hot rolling |
| WO2013041558A1 (en) * | 2011-09-19 | 2013-03-28 | Sandvik Intellectual Property Ab | A method for producing high speed steel |
| KR20140064953A (en) * | 2011-09-19 | 2014-05-28 | 산드빅 인터렉츄얼 프로퍼티 에이비 | A roll for hot rolling |
| JP2014531982A (en) * | 2011-09-19 | 2014-12-04 | サンドビック インテレクチュアル プロパティー アクティエボラーグ | Hot rolling roll |
| US9993858B2 (en) | 2011-09-19 | 2018-06-12 | Sandvik Intellectual Property Ab | Roll for hot rolling |
| KR101988685B1 (en) | 2011-09-19 | 2019-06-12 | 하이페리온 매터리얼즈 앤드 테크놀로지스 (스웨덴) 에이비 | A roll for hot rolling |
| WO2015181852A1 (en) * | 2014-05-28 | 2015-12-03 | 日鉄住金ハード株式会社 | Rolls of winding equipment in hot-rolling factory |
| US10040106B2 (en) | 2014-05-28 | 2018-08-07 | Nippon Steel & Sumikin Hardfacing Co., Ltd. | Rolls of winding equipment in hot-rolling factory |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2999472B1 (en) | 2000-01-17 |
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