JPH0293039A - Graphite-crystallized high-chrome cast iron roll material having excellent seizure resistance and wear resistance - Google Patents
Graphite-crystallized high-chrome cast iron roll material having excellent seizure resistance and wear resistanceInfo
- Publication number
- JPH0293039A JPH0293039A JP24561288A JP24561288A JPH0293039A JP H0293039 A JPH0293039 A JP H0293039A JP 24561288 A JP24561288 A JP 24561288A JP 24561288 A JP24561288 A JP 24561288A JP H0293039 A JPH0293039 A JP H0293039A
- Authority
- JP
- Japan
- Prior art keywords
- graphite
- roll
- resistance
- wear resistance
- cast iron
- 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 46
- 229910001018 Cast iron Inorganic materials 0.000 title claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 26
- 239000010439 graphite Substances 0.000 claims abstract description 26
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 23
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 10
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 3
- 239000011651 chromium Substances 0.000 claims description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 238000005098 hot rolling Methods 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000005496 eutectics Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 14
- 238000005096 rolling process Methods 0.000 description 11
- 239000002131 composite material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000011081 inoculation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910003470 tongbaite Inorganic materials 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 229910003178 Mo2C Inorganic materials 0.000 description 1
- -1 Nb2C are formed Chemical class 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は主として熱間圧延に供される圧延用複合ロール
の圧延使用層に適用されるロール材であって、優れた耐
焼付性と耐摩耗性とを兼備したものに関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a roll material that is applied to the rolling layer of a rolling composite roll that is mainly subjected to hot rolling, and which has excellent seizure resistance and resistance. It relates to something that also has abrasion resistance.
（従来の技術）
高クロム鋳鉄ロール材は、冶金学的にはその基地組織中
に微細な高硬度炭化物を含んでおり、耐摩耗性に優れる
のが特長である。かかる高クロムロール材によって圧延
用ロールの外層（圧延使用層）が形成された複合ロール
は、熱間圧延用ロール特にホットストリップミル仕上列
前段ワークロールとして用いられている。(Prior Art) High chromium cast iron roll materials contain fine high-hardness carbides in their matrix structure, and are characterized by excellent wear resistance. A composite roll in which the outer layer (rolling layer) of a rolling roll is formed of such a high chromium roll material is used as a hot rolling roll, particularly as a work roll in the front stage of a hot strip mill finishing row.
しかし、高クロムロール材は熱伝導性に劣り、耐焼付性
に難があった。However, high chromium roll materials had poor thermal conductivity and poor seizure resistance.
そこで、零発朋者は、特公昭６１−１６４１５号におい
て開示した通り、高クロムロール材として組織中に黒鉛
を晶出せしめたロール材を提案した。このロール材は、
耐摩耗性と耐焼付性とを兼備しており、圧延性能の向上
に寄与することができた。Therefore, as disclosed in Japanese Patent Publication No. Sho 61-16415, Reihatsu Friends proposed a roll material with graphite crystallized in its structure as a high chromium roll material. This roll material is
It had both wear resistance and seizure resistance, and was able to contribute to improving rolling performance.
（発明が解決しようとする課題）
上記黒鉛が晶出した高クロムロール材は、耐摩耗性と耐
焼付性のみならずミ強靭性も有しておりロール材として
好適なものであるが、カーバイドが従来から熱間圧延用
ロール材として使用されているグレンロール材や高台金
ダクタイル材に比べて小さく耐摩耗性の点で改善の余地
があり、更には耐焼付性向上の要求も強い。(Problems to be Solved by the Invention) The above-mentioned high chromium roll material in which graphite crystallizes has not only wear resistance and seizure resistance but also toughness and is suitable as a roll material. is smaller than the grain roll material and high-metal ductile material conventionally used as roll materials for hot rolling, so there is room for improvement in terms of wear resistance, and there is also a strong demand for improved seizure resistance.
本発明はかかる問題点に鑑みなされたもので、従来に増
さる優れた耐摩耗性と耐焼付性とを備えた黒鉛が晶出し
た高クロム鋳鉄ロール材を提供することを目的とする。The present invention was made in view of the above problems, and an object of the present invention is to provide a high chromium cast iron roll material in which graphite crystallizes, which has superior wear resistance and seizure resistance compared to conventional roll materials.
（課題を解決するための手段）
上記目的を達成するためになされた本発明の黒鉛晶出高
クロム鋳鉄ロール材は、化学組成が重量％で
Ｃ：２．Ｏ〜３．６％ Ｎｉ：４．５〜１０％Ｓｉ
： １．０〜１．９％ Ｃｒ： ５〜１０％Ｍｎ
： ０．５〜１．５％ Ｍｏ ： ０．２〜６．
０％Ｐ：０．１１〜０．５％
残部実質的にＦｅからなり、組織中に黒鉛が晶出してい
ることを発明の構成とするものである。(Means for Solving the Problems) The graphite-crystallized high chromium cast iron roll material of the present invention, which has been made to achieve the above object, has a chemical composition of C:2. O~3.6% Ni:4.5~10%Si
: 1.0~1.9% Cr: 5~10%Mn
: 0.5-1.5% Mo: 0.2-6.
0% P: 0.11 to 0.5% The remainder is substantially composed of Fe, and the composition of the invention is that graphite is crystallized in the structure.
（作 用）
本発明のロール材においては、黒鉛を少量品出させるＳ
ｉ％範囲においてＰを積極的に添加してＦｅ３Ｐ共品を
組織中に生成させて耐焼付性を大幅に向上させる。また
、Ｍｏを所定量添加して高硬度のＭｏＣを析出させ、更
に基地中にＭｏを固溶させることによって耐摩耗性の向
上を図っている。(Function) In the roll material of the present invention, the S
By actively adding P in the i% range, Fe3P co-products are generated in the structure and the seizure resistance is greatly improved. Furthermore, the wear resistance is improved by adding a predetermined amount of Mo to precipitate MoC with high hardness, and further by dissolving Mo in the matrix.
（実施例）
以下、本発明の黒鉛晶出高クロム鋳鉄ロール材の成分限
定理由について述べると共に、圧延用複合ロールの圧延
使用層への適用について言及する。(Example) Hereinafter, the reasons for limiting the components of the graphite crystallized high chromium cast iron roll material of the present invention will be described, and the application to the rolling layer of a rolling composite roll will be mentioned.
以下、成分単位はすべて重量％である。Hereinafter, all component units are weight %.
Ｃ：２．０〜３．６％
ＣはＣｒやＭｏと結合してカーバイドを形成する他、後
述するＳｉ、 Ｎｉの黒鉛化生成元素により微細な黒鉛
となって晶出する。２．０％未満ではクロムカーバイド
、Ｍｏ２Ｃが減少すると共に黒鉛の晶出もなくなり、目
的とする黒鉛品出の高クロム鋳鉄が得られない。一方、
３．６％を越えるとＣｒ １０％、Ｍｏ ６．０％以下
に抑えられているため過飽和の炭素が高いＳｔ、 Ｎｉ
含有量のため黒鉛化し、黒鉛晶出量が過剰となって耐摩
耗性が劣化する。C: 2.0 to 3.6% C not only combines with Cr and Mo to form carbide, but also crystallizes as fine graphite with the graphitization forming elements of Si and Ni, which will be described later. If it is less than 2.0%, chromium carbide and Mo2C will decrease and graphite will not crystallize, making it impossible to obtain the desired high-chromium cast iron with graphite content. on the other hand,
If it exceeds 3.6%, Cr is suppressed to 10% and Mo is suppressed to 6.0% or less, so St and Ni have high supersaturated carbon.
Due to the content, it becomes graphitized, and the amount of graphite crystallized becomes excessive, resulting in deterioration of wear resistance.
Ｓｉ：１．Ｏ〜１．９％
Ｓｉは高クロム材質に黒鉛を晶出させるために必要で、
１．０％未満ではこの効果が少なく、１．９％を越える
と黒鉛品出が過多となり耐摩耗性が劣化する。なお、Ｓ
ｔについては鋳込前Ｏ８ｉ量を上記成分範囲よりも低目
にしておいて、鋳込時に接種を行ない、最終製品の成分
で上記範囲内に調整する方が黒鉛の晶出に有効である。Si:1. O ~ 1.9% Si is necessary to crystallize graphite in high chromium materials.
If it is less than 1.0%, this effect will be small, and if it exceeds 1.9%, graphite will be excessively present and the wear resistance will deteriorate. In addition, S
Regarding t, it is more effective for crystallizing graphite to set the amount of O8i before casting to be lower than the above component range, perform inoculation at the time of casting, and adjust the components of the final product to within the above range.
門ｎ：０．５〜１．５％
Ｍｎは溶湯の脱酸のためにＳｉと共に積極的に添加され
る。Ｍｎ ０．５％未満ではこの効果が不足し、１．５
％を越えると機械的性質特に靭性の点で劣化が著しくな
る。Gate n: 0.5 to 1.5% Mn is actively added together with Si to deoxidize the molten metal. If Mn is less than 0.5%, this effect is insufficient;
%, mechanical properties, especially toughness, will deteriorate significantly.
Ｐ：０．１１〜０．５％
Ｐは、Ｆｅ、Ｐを形成し耐摩耗性、耐焼付性の向上に寄
与する。０．１１％未満ではその効果が期待できず、０
．５％を越えると、材質の脆化が著しい。P: 0.11 to 0.5% P forms Fe and P and contributes to improving wear resistance and seizure resistance. If it is less than 0.11%, the effect cannot be expected;
．． If it exceeds 5%, the material becomes extremely brittle.
Ｎｉ：４．５〜１０％
Ｎｉは、基地組織の改良と黒鉛晶出の目的で積極的に含
有される。Ｎｉ ４．５未満では黒鉛の晶出量が少ない
。一方、１０％を越えるとＳｉの場合と同様黒鉛過多と
なり、同時に残留オーステナイトが増加して後の熱処理
によってもオーステナイトが安定で、使用時に耐肌荒性
の面で問題となる。Ni: 4.5 to 10% Ni is actively included for the purpose of improving the matrix structure and crystallizing graphite. When Ni is less than 4.5, the amount of graphite crystallized is small. On the other hand, if it exceeds 10%, as in the case of Si, there will be too much graphite, and at the same time residual austenite will increase, and the austenite will remain stable even after subsequent heat treatment, causing problems in terms of roughness resistance during use.
Ｃｒ：５〜１０％
ＣｒはＣと結合してＣｒ炭化物を形成するが、５％未満
では炭化物が少なく耐摩耗性の点で劣り、一方、１０％
を越えると上記Ｎｉ、 Ｓｉの成分範囲では黒鉛の晶出
が過少となる。Cr: 5-10% Cr combines with C to form Cr carbide, but if it is less than 5%, there are few carbides and the wear resistance is poor;
If the content exceeds this range, graphite crystallization will be too small within the above Ni and Si component ranges.
Ｍｏ ： ０．２〜６．０％
ＭｏはＣと結合してＭｏ、Ｃを形成し、また基地中に固
溶して耐摩耗性の向上に寄与する。この効果を発揮させ
るためには、０．２％以上必要である。Mo: 0.2 to 6.0% Mo combines with C to form Mo and C, and is dissolved in the matrix to contribute to improving wear resistance. In order to exhibit this effect, 0.2% or more is required.
しかし、６．０％を越えるとその効果は飽和し、更に白
紙化傾向を著しく助長するため黒鉛の晶出が困難になる
。尚、白銑化傾向の著しい助長を回避するためには、Ｃ
，Ｓｉを高目に添加すると共にＳｔは鋳込時に接種の形
で添加することが望ましい。However, if it exceeds 6.0%, the effect is saturated and furthermore, the tendency to blank out is significantly promoted, making it difficult to crystallize graphite. In addition, in order to avoid a significant acceleration of the tendency toward white pig iron, it is necessary to
, Si is preferably added at a high level, and St is preferably added in the form of inoculation during casting.
本発明の黒鉛晶出高クロム鋳鉄ロール材は以上の成分の
ほか残部実質的にＦｅで形成される。尚、Ｓは材質を脆
くするので少ない程望ましく、０．１５％以下に止めて
おくのがよい。また、材質特性を向上させるためにＦｅ
の１部に代えてＮｂ、 Ｖを必要に応じて含有させるこ
とができる。すなわち、ＮｂＶは共に鋳造組織の微細化
に効果があり、各々単独又は複合で１．０％以下含有す
ることができる１、０％を越えると、炭素と結びついて
ＶＣ，ＮｂＣ。In addition to the above-mentioned components, the graphite-crystallized high-chromium cast iron roll material of the present invention is made essentially of Fe. It should be noted that S makes the material brittle, so the smaller the content, the more desirable it is, and it is best to keep it at 0.15% or less. In addition, in order to improve the material properties, Fe
If necessary, Nb or V can be included in place of a part of the above. That is, both NbV is effective in refining the casting structure, and each can be contained alone or in combination at 1.0% or less.If it exceeds 1.0%, it combines with carbon to form VC and NbC.
Ｎｂ２Ｃ等の炭化物を形成し、黒鉛の晶出を妨げると共
にコスト高となるためである。This is because carbides such as Nb2C are formed, which prevents crystallization of graphite and increases costs.
以上説明した黒鉛品出高クロム鋳鉄ロール材は、主とし
て圧延用複合ロールの使用層である外層の鋳造材として
使用されるが、その内層（軸芯）材としては、高級鋳鉄
やダクタイル鋳鉄等の強靭性のある鋳鉄材又は黒鉛鋳鋼
等の鋳鋼材が適宜使用される。The high-quality graphite cast iron roll material described above is mainly used as a casting material for the outer layer of rolling composite rolls, but the inner layer (core) material is made of high-grade cast iron, ductile cast iron, etc. A tough cast iron material or a cast steel material such as graphite cast steel is used as appropriate.
また、前記複合ロールの製造方法としては、遠心力鋳造
法により外層を鋳造した後、外層を内存した遠心力鋳造
用鋳型を起立させて静置鋳型を構成し、その内部に内層
材溶湯を注湯し、外層と内層とを溶着一体化する方法が
あり、筒便であるので一般に適用されている。In addition, as a manufacturing method for the composite roll, after casting the outer layer by centrifugal force casting, a centrifugal force casting mold containing the outer layer is stood up to form a stationary mold, and the molten metal of the inner layer material is poured into the mold. There is a method in which the outer layer and inner layer are welded together in hot water, and this method is generally applied because it is a tube.
尚、本発明でいうロール材とは、上記説明した圧延用ロ
ールのみならず圧延付帯設備におけるロラに適用可能な
材質であることを意味する。従って、本発明のロール材
は、圧延用ロールの外層材に限らず、例えばホットラン
テーブルローラ等の中空円筒状ローラの外層材として通
用できる。Note that the term "roll material" as used in the present invention means a material that can be applied not only to the rolling rolls described above but also to rollers in rolling equipment. Therefore, the roll material of the present invention can be used not only as an outer layer material of rolling rolls, but also as an outer layer material of hollow cylindrical rollers such as hot run table rollers.
次に本発明の黒鉛晶出高クロムロール材を適用した下記
寸法の複合ロールの製造実施例について説明する。Next, an example of manufacturing a composite roll having the following dimensions to which the graphite crystallized high chromium roll material of the present invention is applied will be described.
（１） ロール寸法（単位ｍｍ）
製品胴径：６６０φ 胴 長： １７５０全 長
： ３７００
（２）製造方法
■ 外層材溶湯として第１表に示す高クロム鋳鉄溶湯を
用い、これを遠心力鋳造機上で回転する鋳型に１４００
″Ｃの鋳込温度で肉厚７５ｍｍ （鋳込重量２７２００
ｋｇ）分鋳込んだ。(1) Roll dimensions (unit: mm) Product body diameter: 660φ Body length: 1750 Overall length: 3700 (2) Manufacturing method■ High chromium cast iron molten metal shown in Table 1 is used as the outer layer material molten metal, and this is cast using a centrifugal force casting machine. 1400 in the mold rotating above
Wall thickness 75mm at casting temperature ``C (Casting weight 27200
kg) was cast.
■ 外層が完全に凝固した後（鋳込開始から２１〜２２
分後）、この遠心力鋳造用鋳型を垂直に立てて、第１表
に外層材溶湯と共に示した軸芯材溶湯を鋳型上部から１
３８０°Ｃで鋳込み、鋳型内を完全に満たした後、上端
を押湯保温材でカバーした。■ After the outer layer has completely solidified (21 to 22 minutes after the start of casting)
After 1 minute), this centrifugal casting mold was set vertically, and the molten core material shown in Table 1 along with the molten material for the outer layer was poured from the top of the mold.
After casting at 380°C and completely filling the mold, the upper end was covered with a riser heat insulating material.
■ 完全に冷却した後、ロールを鋳型から取出し、組織
安定化熱処理（５５０°ＣＸ １０Ｈｒ）と鋳造応力除
去のための熱処理（５５０°ＣＸ １０Ｈｒ）を行った
。(2) After cooling completely, the roll was taken out from the mold and subjected to structure stabilization heat treatment (550°C x 10 hours) and heat treatment to remove casting stress (550°C x 10 hours).
第１表 いることが確認された。Table 1 It was confirmed that there is.
（発明の効果）
以上説明した通り、本発明の黒鉛晶出高クロム鋳鉄ロー
ル材は、特定Ｓｉ ： １．０〜１．９％、Ｐ：０．１
１〜０．５％、Ｍｏ ： ０．２〜６．０％を含有した
特定組成の高クロム鋳鉄材質で形成したので、少量の晶
出黒鉛とＦｅ１Ｐとの作用によって優れた耐焼付性を具
備するものとなり、また、クロムカーバイドやＭｏＣの
生成およびＭｏによる基地の強化によって優れた耐摩耗
性を具備するものとなり、特に熱間圧延用ロールの外層
材としての利用価値は著大である。(Effects of the Invention) As explained above, the graphite crystallized high chromium cast iron roll material of the present invention has a specific Si: 1.0 to 1.9%, P: 0.1
Since it is made of a high chromium cast iron material with a specific composition containing 1 to 0.5% Mo and 0.2 to 6.0% Mo, it has excellent seizure resistance due to the action of a small amount of crystallized graphite and Fe1P. In addition, it has excellent wear resistance due to the formation of chromium carbide and MoC and the reinforcement of the base by Mo, and its utility value is particularly great as an outer layer material for hot rolling rolls.
特 許 出 願 人 久保田鉄工株式会社（３）機械
的性質など
仕上加工後、実施例１および２の外層表面硬度を測定し
たところＨｓ８０〜８１であった。Patent Applicant: Kubota Iron Works Co., Ltd. (3) After finishing mechanical properties, etc., the surface hardness of the outer layer of Examples 1 and 2 was measured and found to be Hs80-81.
Claims (1)
０〜１．９％Ｃｒ：５〜１０％ Ｍｎ：０．５〜１．５％Ｍｏ：０．２〜６．０％Ｐ：０
．１１〜０．５％ 残部実質的にＦｅからなり、組織中に黒鉛が晶出してい
ることを特徴とする耐焼付性および耐摩耗性に優れた黒
鉛晶出高クロム鋳鉄ロール材。(1) Chemical composition in weight percent: C: 2.0-3.6% Ni: 4.5-10% Si: 1.
0-1.9% Cr: 5-10% Mn: 0.5-1.5% Mo: 0.2-6.0% P: 0
．． 11-0.5% A graphite-crystallized high-chromium cast iron roll material with excellent seizure resistance and abrasion resistance, characterized in that the remainder essentially consists of Fe and graphite is crystallized in the structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24561288A JPH0293039A (en) | 1988-09-29 | 1988-09-29 | Graphite-crystallized high-chrome cast iron roll material having excellent seizure resistance and wear resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24561288A JPH0293039A (en) | 1988-09-29 | 1988-09-29 | Graphite-crystallized high-chrome cast iron roll material having excellent seizure resistance and wear resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0293039A true JPH0293039A (en) | 1990-04-03 |
Family
ID=17136293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24561288A Pending JPH0293039A (en) | 1988-09-29 | 1988-09-29 | Graphite-crystallized high-chrome cast iron roll material having excellent seizure resistance and wear resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0293039A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005232519A (en) * | 2004-02-18 | 2005-09-02 | Jfe Steel Kk | External layer material of roll for hot rolling, and composite roll for hot rolling |
| JP2007051309A (en) * | 2005-08-15 | 2007-03-01 | Jfe Steel Kk | Casting with excellent seizure resistance and wear resistance |
| JP2019071877A (en) * | 2017-10-12 | 2019-05-16 | 鹿児島県 | Manufacturing method of potato processed foods |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63128148A (en) * | 1986-11-18 | 1988-05-31 | Kubota Ltd | Roll material containing chromium |
| JPS63149352A (en) * | 1986-12-12 | 1988-06-22 | Kubota Ltd | High chrome roll material having crystallized graphite |
-
1988
- 1988-09-29 JP JP24561288A patent/JPH0293039A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63128148A (en) * | 1986-11-18 | 1988-05-31 | Kubota Ltd | Roll material containing chromium |
| JPS63149352A (en) * | 1986-12-12 | 1988-06-22 | Kubota Ltd | High chrome roll material having crystallized graphite |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005232519A (en) * | 2004-02-18 | 2005-09-02 | Jfe Steel Kk | External layer material of roll for hot rolling, and composite roll for hot rolling |
| JP4569122B2 (en) * | 2004-02-18 | 2010-10-27 | Ｊｆｅスチール株式会社 | Roll outer layer material for hot rolling and composite roll for hot rolling |
| JP2007051309A (en) * | 2005-08-15 | 2007-03-01 | Jfe Steel Kk | Casting with excellent seizure resistance and wear resistance |
| JP4561527B2 (en) * | 2005-08-15 | 2010-10-13 | Ｊｆｅスチール株式会社 | Castings with excellent seizure resistance and wear resistance |
| JP2019071877A (en) * | 2017-10-12 | 2019-05-16 | 鹿児島県 | Manufacturing method of potato processed foods |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3343538B2 (en) | Rolling roll | |
| JPH0293039A (en) | Graphite-crystallized high-chrome cast iron roll material having excellent seizure resistance and wear resistance | |
| JP2003342669A (en) | Outer layer material for hot rolling roll and composite roll for hot rolling | |
| JP2000239779A (en) | External layer material for rolling roll made by centrifugal casting, rolling roll and production thereof | |
| JP4123903B2 (en) | Hot roll outer layer material and hot roll composite roll | |
| JPS6320627B2 (en) | ||
| JP3056703B2 (en) | Rolling roll outer layer material and rolling roll using the same | |
| JPH02285047A (en) | Roll for hot rolling | |
| JPH08325673A (en) | Composite roll for rolling excellent in wear resistance, surface roughening resistance and the like | |
| JP2672598B2 (en) | Graphite-crystallized high chromium cast iron roll material and composite roll for rolling with excellent wear resistance and surface roughness | |
| JPS6116415B2 (en) | ||
| JP2673215B2 (en) | High chrome roll with graphite | |
| JP2636020B2 (en) | Graphite-crystallized high chromium cast iron roll material and composite roll for rolling with excellent wear resistance and surface roughness | |
| JPH02129340A (en) | Graphite crystallized high chromium cast iron roll material having excellent wear resistance | |
| JPS63149352A (en) | High chrome roll material having crystallized graphite | |
| JPH0293040A (en) | Graphite-crystallized high-chrome cast iron roll material having excellent seizure resistance and wear resistance | |
| JPH0635640B2 (en) | Roll for rolling with excellent abrasion resistance and seizure resistance | |
| JPS6333543A (en) | Graphite-crystallized high-chromium roll material | |
| JPH04191347A (en) | Hollow sleeve material for assembled type rolling roll | |
| JPH0227431B2 (en) | KOKUENOJUSURUKOKUROMUROORU | |
| JPS60121013A (en) | Composite roll for strip mill | |
| JPH07207411A (en) | High speed steel composite roll and its production | |
| JPH0313542A (en) | Graphite crystallized high molybdenum cast iron material having excellent wear resistance | |
| JPH0694581B2 (en) | Roll for hot rolling | |
| JPH0532122B2 (en) |