JPH1177118A - Combined sleeve for rolling wide-flange shape steel - Google Patents
Combined sleeve for rolling wide-flange shape steelInfo
- Publication number
- JPH1177118A JPH1177118A JP24799297A JP24799297A JPH1177118A JP H1177118 A JPH1177118 A JP H1177118A JP 24799297 A JP24799297 A JP 24799297A JP 24799297 A JP24799297 A JP 24799297A JP H1177118 A JPH1177118 A JP H1177118A
- Authority
- JP
- Japan
- Prior art keywords
- outer layer
- inner layer
- less
- sleeve
- rolling
- 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.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ユニバーサルミル
に使用されるＨ型鋼圧延用複合スリーブロールに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite sleeve roll for rolling an H-section steel used in a universal mill.
【０００２】[0002]
【従来の技術】Ｈ型鋼の圧延は、生産性、品質確保の点
からユニバーサルミルを用いて行われることが多いが、
このユニバーサルミルで使用されるロールは殆どがスリ
ーブ方式となっている。このスリーブロールは、円筒状
の圧延用スリーブを軸に焼嵌め等により組み立てて使用
される。スリーブの外面側は、圧延製品の品質を確保す
るために、耐摩耗性、耐クラック性、耐焼付性が要求さ
れ、スリーブの内面側は、焼嵌め応力や圧延時の応力等
に耐え得る強靱性が要求される。これらの要求を満たす
ために、従来から、圧延用スリーブは、図１に示すよう
に、外層(1)と内層(2)とを別材質を用いて溶着一体化さ
れた複合構造になっている。このＨ型鋼圧延用複合スリ
ーブは、通常、遠心力鋳造法により作製され、外層材を
鋳込んだ後、その内面に内層材溶湯を鋳込むことによ
り、外層の内面に内層が溶着され冶金学的に一体化され
る。この複合スリーブの一例として、外層に高クロム
材、内層に鋳鋼材を用いたものがある（特開昭６２−１
４４８０６号）。2. Description of the Related Art Rolling of an H-section steel is often carried out using a universal mill in terms of productivity and quality assurance.
Most of the rolls used in this universal mill are of the sleeve type. This sleeve roll is used by assembling a cylindrical rolling sleeve on a shaft by shrink fitting or the like. The outer surface of the sleeve must have abrasion resistance, crack resistance, and seizure resistance to ensure the quality of the rolled product, and the inner surface of the sleeve is tough enough to withstand shrink-fit stress and stress during rolling. Is required. In order to satisfy these requirements, conventionally, a rolling sleeve has a composite structure in which an outer layer (1) and an inner layer (2) are welded and integrated using different materials as shown in FIG. . This H-section steel rolling composite sleeve is usually manufactured by a centrifugal casting method, and after casting an outer layer material, an inner layer material melt is cast on the inner surface thereof, whereby the inner layer is welded to the inner surface of the outer layer, and metallurgy is performed. Integrated into As an example of this composite sleeve, there is a sleeve using a high chromium material for the outer layer and a cast steel material for the inner layer (Japanese Patent Laid-Open No. 62-1).
44806).
【０００３】[0003]
【発明が解決しようとする課題】しかし、従来の高クロ
ム材を用いた外層は、耐摩耗性にすぐれているものの耐
焼付性の点でさらなる改善が求められている。また、鋳
鋼材を用いた内層は強靱性の点で改善が求められてい
る。内層については、強靱性を高めるために黒鉛鋼を使
用することも考えられるが、遠心鋳造時に外層のＣｒが
内層へ不可避的に混入するので、黒鉛鋼を使用した場
合、黒鉛化不良を起こして材質が劣化する不都合があ
る。このため、外層に高クロム材を使用するときには、
黒鉛鋼は適さない。However, the outer layer made of the conventional high chromium material is excellent in abrasion resistance but is required to be further improved in seizure resistance. Further, the inner layer using cast steel is required to be improved in terms of toughness. For the inner layer, it is conceivable to use graphite steel in order to increase the toughness, but Cr in the outer layer is inevitably mixed into the inner layer during centrifugal casting, so when using graphite steel, poor graphitization occurs. There is a disadvantage that the material is deteriorated. For this reason, when using high chrome material for the outer layer,
Graphite steel is not suitable.
【０００４】本発明の目的は、外層に高クロム材、内層
に鋳鋼材を用いたＨ型鋼圧延用複合スリーブであって、
外層を構成する高クロム材の耐焼付性を改善すると共
に、内層を構成する鋳鋼材の強靱性を改善することにあ
る。An object of the present invention is to provide a composite sleeve for rolling H-type steel using a high chromium material for the outer layer and a cast steel material for the inner layer,
It is an object of the present invention to improve the seizure resistance of a high chromium material constituting an outer layer and to improve the toughness of a cast steel material constituting an inner layer.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するため
に、本発明の複合スリーブは、重量％にて、Ｃ：１.０
〜２.０％、Ｓｉ：０.２〜１.５％、Ｍｎ：０.２〜１.
５％、Ｃｒ：９.０〜２０.０％、Ｍｏ：１.０〜８.０
％、Ｐ：０.１％以下、Ｓ：０.１％以下、残部実質的に
Ｆｅからなる高クロム材の外層と、重量％にて、Ｃ：
０.４〜０.８％、Ｓｉ：１.１〜３.０％、Ｍｎ：０.２
〜１.５％、Ｎｉ：０.５％未満、Ｃｒ：２.５％以下、
Ｍｏ：１.０％以下、Ｐ：０.１％以下、Ｓ：０.１％以
下、残部実質的にＦｅからなる鋳鋼材の内層とを溶着一
体化したものである。In order to achieve the above object, the composite sleeve of the present invention has a C content of 1.0% by weight.
2.0%, Si: 0.2-1.5%, Mn: 0.2-1.0.
5%, Cr: 9.0-20.0%, Mo: 1.0-8.0
%, P: 0.1% or less, S: 0.1% or less, the balance being an outer layer of a high chromium material substantially composed of Fe, and C:
0.4-0.8%, Si: 1.1-3.0%, Mn: 0.2
1.5%, Ni: less than 0.5%, Cr: 2.5% or less,
Mo: 1.0% or less, P: 0.1% or less, S: 0.1% or less, and the balance is formed by welding and integrating an inner layer of a cast steel material substantially made of Fe.
【０００６】[0006]
【作用】発明者は、従来から使用されている高クロム材
にはＮｉが含まれており、そのＮｉが耐焼付性を低下さ
せていることを見いだした。本発明の高クロム材はＮｉ
を含有していないので、すぐれた耐焼付性を具備してい
る。内層を構成する鋳鋼材は、従来の鋳鋼材よりもＳｉ
を多く含有しており、このＳｉの作用により強靱性の改
善が達成される。The inventor has found that the high chromium material conventionally used contains Ni, and that Ni reduces the seizure resistance. The high chromium material of the present invention is Ni
, And has excellent seizure resistance. The cast steel material constituting the inner layer is more Si
And the toughness is improved by the action of Si.
【０００７】[0007]
【成分限定理由の説明】外層を構成する高クロム材と、
内層を構成する鋳鋼材の合金化学成分について、その成
分限定理由を次に説明する。外層材 （高クロム材） Ｃ：１.０〜２.０％ ＣはＣｒと共晶炭化物を形成し、耐摩耗性の向上に寄与
する。含有量が１.０％に満たないと十分な耐摩耗性が
得られない。一方、２.０％を超えると、内層を形成す
るための鋳鋼材との凝固点差が大きくなり、内層との溶
着不良が発生し易くなる。このため、Ｃの含有量は１.
０〜２.０％に規定する。[Explanation of the reason for limiting the components] A high chromium material constituting the outer layer,
Next, the reasons for limiting the chemical components of the alloy of the cast steel material constituting the inner layer will be described. Outer layer material (high chromium material) C: 1.0 to 2.0% C forms a eutectic carbide with Cr and contributes to improvement of wear resistance. If the content is less than 1.0%, sufficient wear resistance cannot be obtained. On the other hand, if it exceeds 2.0%, the solidification point difference from the cast steel material for forming the inner layer becomes large, and poor welding to the inner layer tends to occur. Therefore, the content of C is 1.
0% to 2.0%.
【０００８】Ｓｉ：０.２〜１.５％ Ｓｉは脱酸作用があり、０.２％以上含有させる。しか
し、１.５％を超えると材質が脆くなるので上限は１.５
％とする。Si: 0.2 to 1.5% Si has a deoxidizing effect and is contained in an amount of 0.2% or more. However, if the content exceeds 1.5%, the material becomes brittle, so the upper limit is 1.5.
%.
【０００９】Ｍｎ：０.２〜１.５％ ＭｎはＳと結合してＭｎＳを形成し、Ｓによる脆化を防
止する作用を有する。このため、０.２％以上含有させ
る。しかし、１.５％を超えて含有すると材質を脆くす
るので上限は１.５％に規定する。Mn: 0.2 to 1.5% Mn combines with S to form MnS and has an effect of preventing embrittlement due to S. For this reason, the content is made 0.2% or more. However, if the content exceeds 1.5%, the material becomes brittle, so the upper limit is set to 1.5%.
【００１０】Ｃｒ：９.０〜２０.０％ ＣｒはＣと結合して炭化物を形成し耐摩耗性を向上させ
る。含有量が９％に満たないと耐摩耗性の向上効果が十
分でなく、２０.０％を超えると、残留オーステナイト
が安定化し易くなり、耐焼付性が悪くなる。このため、
Ｃｒの含有量は９.０〜２０.０％に規定する。なお、Ｃ
ｒの下限は、耐摩耗性の向上を得るために、１１％以上
にすることが望ましい。Cr: 9.0-20.0% Cr combines with C to form carbides and improves wear resistance. If the content is less than 9%, the effect of improving the wear resistance is not sufficient, and if it exceeds 20.0%, the retained austenite is easily stabilized and the seizure resistance is deteriorated. For this reason,
The content of Cr is regulated to 9.0 to 20.0%. Note that C
The lower limit of r is preferably set to 11% or more in order to obtain an improvement in wear resistance.
【００１１】Ｍｏ：１.０〜８.０％ ＭｏはＣｒと同様、炭化物を形成し耐摩耗性の向上に寄
与する。また、耐焼付性改善のために１.０％以上含有
させるものとし、より好ましくは２.０％以上含有させ
る。しかし、８.０％を超えて含有しても対応する効果
が得られず、経済的に不利である。このため、上限は
８.０％に規定する。Mo: 1.0 to 8.0% Mo forms carbides like Cr and contributes to improvement of wear resistance. In order to improve seizure resistance, the content should be 1.0% or more, more preferably 2.0% or more. However, if the content exceeds 8.0%, the corresponding effect cannot be obtained, which is economically disadvantageous. For this reason, the upper limit is specified at 8.0%.
【００１２】Ｐ、Ｓ：０.１％以下 ＰとＳは、不純物元素で材質を脆くするため、できるだ
け少ない方が好ましく、両元素とも上限は０.１％以下
にするのがよい。P, S: 0.1% or less P and S are preferably as small as possible because the material is brittle due to an impurity element. The upper limit of both elements is preferably 0.1% or less.
【００１３】内層材（鋳鋼材） Ｃ：０.４〜０.８％ Ｃは内層の靱性向上の点では含有量が少ないほど好まし
いが、０.４％に満たないと外層との凝固点差が大きく
なり、外層との溶着不良を発生し易くなる。一方、０.
８％を超えて含有すると、鋳造時に遊離炭化物の析出が
多くなり、材質の劣化を招く。このため、含有量は０.
４〜０.８％に規定する。Inner layer material (cast steel material) C: 0.4 to 0.8% C is preferably as small as possible from the viewpoint of improving the toughness of the inner layer, but if it is less than 0.4%, the solidification point difference from the outer layer is reduced. It becomes large, and it is easy to generate welding failure with the outer layer. On the other hand, 0.
If the content exceeds 8%, precipitation of free carbide increases during casting, which causes deterioration of the material. Therefore, the content is 0.1.
It is regulated to 4-0.8%.
【００１４】Ｓｉ：１.１〜３.０％ Ｓｉは脱酸作用の他、フェライト化及びパーライト変態
を促進し、内層の強靱性を向上させるために、１.１％
以上含有させるものとし、好ましくは１.５％以上含有
させる。しかし、あまりに多く含有すると材質の劣化を
招くため、上限は３.０％に規定する。Si: 1.1 to 3.0% Si promotes ferrite formation and pearlite transformation in addition to deoxidation, and 1.1% to improve the toughness of the inner layer.
The content is preferably set to 1.5% or more. However, if the content is too large, the material is deteriorated. Therefore, the upper limit is set to 3.0%.
【００１５】Ｍｎ：０.２〜１.５％ ＭｎはＳと結合してＭｎＳを形成し、Ｓによる脆化を防
止する作用を有する。このため、０.２％以上含有させ
る。しかし、１.５％を超えて含有すると材質を脆くす
るので上限は１.５％に規定する。Mn: 0.2 to 1.5% Mn combines with S to form MnS and has an effect of preventing embrittlement due to S. For this reason, the content is made 0.2% or more. However, if the content exceeds 1.5%, the material becomes brittle, so the upper limit is set to 1.5%.
【００１６】Ｎｉ：０.５％未満 Ｎｉは基地中に固溶し、基地を強化させるのに有効であ
るが、焼入れ性を増し、パーライト変態を抑制する作用
を有する。含有量が０.５％以上になるとパーライト変
態の抑制作用が著しくなり、ベイナイト変態を生じ易く
なり、靱性が劣化する。このため、上限を０.５％未満
とする。Ni: less than 0.5% Ni forms a solid solution in the matrix and is effective in strengthening the matrix, but has an effect of increasing hardenability and suppressing pearlite transformation. When the content is 0.5% or more, the effect of suppressing the pearlite transformation becomes remarkable, bainite transformation is easily caused, and the toughness is deteriorated. For this reason, the upper limit is made less than 0.5%.
【００１７】Ｃｒ：２.５％以下 Ｃｒは、外層に高クロム材を用いたとき、遠心鋳造によ
る溶着時に外層から不可避的に混入する。混入量が多く
なると靱性の低下を招き材質が劣化するので少ない方が
好ましい。２.５％までの含有であれば、支障はない。Cr: not more than 2.5% When a high chromium material is used for the outer layer, Cr is inevitably mixed from the outer layer during welding by centrifugal casting. If the amount is large, the toughness is reduced and the material is deteriorated. There is no problem if the content is up to 2.5%.
【００１８】Ｍｏ：１.０％以下 Ｍｏは、Ｃｒと同様、遠心鋳造による溶着時に外層から
不可避的に混入する。混入量が多くなると焼入れ時に硬
化し易く靱性の低下を招くので少ない方が好ましい。
１.０％までの含有であれば、支障はない。Mo: 1.0% or less Mo, like Cr, is inevitably mixed from the outer layer during welding by centrifugal casting. If the amount is too large, it is easily hardened during quenching and the toughness is reduced.
If it is contained up to 1.0%, there is no problem.
【００１９】Ｐ：０.１％以下、Ｓ：０.１％以下 ＰとＳは、不純物元素で材質を脆くするため、できるだ
け少ない方が好ましく、両元素とも上限は０.１％以下
にするのがよい。P: 0.1% or less, S: 0.1% or less P and S are preferably as small as possible because the material is brittle with an impurity element. The upper limit of both elements is 0.1% or less. Is good.
【００２０】[0020]
【発明の実施の形態】本発明のＨ型鋼圧延用複合スリー
ブは、公知の如く金型遠心力鋳造法により作製され、回
転金型の中に、外層を形成する高クロム材の溶湯を鋳込
み、その後、外層の内面が未凝固の間又は凝固直後に、
内層を形成すべき溶湯を鋳込むのである。このようにし
て、外層と内層が冶金学的に一体化された複合スリーブ
が形成される。なお、遠心力鋳造法では、金型の回転軸
が水平方向の横型、斜め方向の傾斜型、鉛直方向の縦型
の各種の方法を用いることができる。このスリーブは、
ユニバーサルミルの軸に焼嵌め等により組み立てて、或
いはベアリングを組み込んで遊動ロールとして使用に供
される。BEST MODE FOR CARRYING OUT THE INVENTION A composite sleeve for rolling an H-shaped steel according to the present invention is produced by a centrifugal casting method as known in the art, and a high chromium material forming an outer layer is cast into a rotating die. Then, during or immediately after the inner surface of the outer layer is not solidified,
The molten metal for forming the inner layer is cast. In this way, a composite sleeve is formed in which the outer and inner layers are metallurgically integrated. In the centrifugal casting method, various methods can be used in which the rotation axis of the mold is horizontal, horizontal, oblique, or vertical. This sleeve is
Assembled by shrink fitting or the like on the shaft of the universal mill, or incorporated with a bearing, and used as a floating roll.
【００２１】[0021]
【実施例】次に、発明例及び比較例の合金化学組成の溶
湯を用いて、遠心力鋳造により供試用の複合スリーブを
作製した。遠心力鋳造の金型サイズは、内径１４００mm
×長さ９５０mmであり、金型回転数はＧナンバーで８０
である。外層及び内層溶湯の化学組成と、溶着後におけ
る内層の化学組成を表１に示す。なお、溶着後における
外層の化学組成は溶湯組成とほぼ同じであるので記載を
省略している。EXAMPLE Next, a composite sleeve for a test was produced by centrifugal casting using the molten alloys having the chemical compositions of the invention and the comparative examples. Centrifugal casting mold size is 1400mm inside diameter
× length 950mm, mold rotation speed is 80 in G number
It is. Table 1 shows the chemical composition of the outer layer and the inner layer molten metal and the chemical composition of the inner layer after welding. Since the chemical composition of the outer layer after welding is almost the same as the composition of the molten metal, the description is omitted.
【００２２】[0022]
【表１】 [Table 1]
【００２３】外層及び内層の鋳造温度、内層の鋳造タイ
ミング、外層及び内層の鋳造厚さを表２に記載してい
る。Table 2 shows the casting temperature of the outer layer and the inner layer, the casting timing of the inner layer, and the casting thickness of the outer layer and the inner layer.
【００２４】[0024]
【表２】 [Table 2]
【００２５】発明例と比較例の供試スリーブは、超音波
探傷試験により、両スリーブとも外層と内層とが完全に
溶着していることが確認された。また、これら供試スリ
ーブについて、１０００℃×５Ｈの加熱後強制空冷によ
り焼入れし、５５０℃×１０Ｈの焼戻しを３回施した。
かかる熱処理を行なった後、試験片を採取し、外層の硬
度試験、外層の耐焼付性試験、内層の引張試験を行なっ
た。In the test sleeves of the invention example and the comparative example, the outer layer and the inner layer of both sleeves were completely welded by ultrasonic testing. Further, these test sleeves were heated at 1000 ° C. × 5H, then quenched by forced air cooling, and tempered at 550 ° C. × 10H three times.
After the heat treatment, a test piece was collected, and a hardness test of the outer layer, a seizure resistance test of the outer layer, and a tensile test of the inner layer were performed.
【００２６】外層の硬度試験はショア硬度計により行な
った。試験結果は、発明例がＨｓ７３〜７４、比較例が
Ｈｓ７４〜７５であり、殆んど差異はなかった。両方と
も高い硬度を具えており、耐摩耗性にすぐれているとい
える。The hardness test of the outer layer was performed with a Shore hardness tester. The test results were Hs 73 to 74 for the invention example and Hs 74 to 75 for the comparative example, and there was almost no difference. Both have high hardness and can be said to have excellent wear resistance.
【００２７】外層の焼付性は、ファレックス試験により
調べた。ファレックス試験とは、試験片を回転させなが
ら、一対のＶブロック(材質ステンレス鋼ＳＵＳ４３０)
で挟持押圧して、回転トルクの大きさ、変動により焼付
性を調べるものである。発明例は１５０ｋｇｆの荷重で
は焼付が発生しなかったのに対し、比較例は１５０ｋｇ
ｆの荷重で焼付が発生した。これは、比較例の外層に
１.７２％含まれるＮｉが耐焼付性を低下させたものと
考えられる。The seizure of the outer layer was examined by a Falex test. In the Falex test, a pair of V blocks (material: stainless steel SUS430) is rotated while rotating the test piece.
And the seizure is examined by the magnitude and fluctuation of the rotational torque. The invention example did not cause seizure under a load of 150 kgf, whereas the comparative example did not.
Seizure occurred with a load of f. This is presumably because Ni contained in the outer layer of the comparative example at 1.72% reduced the seizure resistance.
【００２８】内層の引張試験結果は、次の通りである。 発明例：引張強度(σt)＝６２０ＭＰａ 伸び(ε)＝２.１％ 比較例：引張強度(σt)＝５８０ＭＰａ 伸び(ε)＝０.３％ このように、発明例が比較例よりも引張強度と伸びの両
特性にすぐれており、強靱性にすぐれることを示してい
る。これは、発明例は、Ｓｉの含有量が多く、強靱性の
向上に寄与したものと考えられる。これに対し、比較例
は、Ｓｉの含有量が少なく強靱性への寄与が少ないこと
と、またＮｉの含有量が多く、ベイナイト変態を生じて
靱性が低下したためと考えられる。The results of the tensile test of the inner layer are as follows. Inventive example: Tensile strength (σt) = 620 MPa Elongation (ε) = 2.1% Comparative example: Tensile strength (σt) = 580 MPa Elongation (ε) = 0.3% Thus, the inventive example is more tensile than the comparative example. Excellent in both properties of strength and elongation, indicating excellent toughness. This is considered to be due to the fact that the invention examples have a high Si content and contributed to the improvement of toughness. On the other hand, it is considered that the comparative example has a low content of Si and a small contribution to toughness, and a high content of Ni, resulting in bainite transformation and a decrease in toughness.
【００２９】[0029]
【発明の効果】本発明では、外層に高クロム材を用いた
Ｈ型鋼圧延用複合スリーブにおいて、その内層を鋳鋼材
で形成したことにより、遠心鋳造時に外層のＣｒが内層
へ多少混入しても、内層に黒鉛鋼を用いたときのような
材質の劣化は生じない。本発明のＨ型鋼圧延用複合スリ
ーブでは、外層に特定化学組成の高クロム材を用いたこ
とにより、高クロム材が本来的に有する耐摩耗特性だけ
でなく、すぐれた耐焼付性を発揮する。また、内層に特
定化学組成の鋳鋼材を用いたことにより、すぐれた強靱
性を確保できる。このように、本発明のＨ型圧延用複合
スリーブは、外内層のもつすぐれた相乗作用により、圧
延成績及びスリーブ寿命において著しい改善効果をもた
らすことができ、その産業上利用の意義は大きい。According to the present invention, in the composite sleeve for rolling H-type steel using a high chromium material for the outer layer, the inner layer is formed of a cast steel material, so that even if Cr of the outer layer is mixed into the inner layer during centrifugal casting. However, there is no deterioration of the material as when graphite steel is used for the inner layer. In the composite sleeve for rolling an H-section steel according to the present invention, by using a high chromium material having a specific chemical composition for the outer layer, not only the wear resistance inherent to the high chromium material but also excellent seizure resistance is exhibited. Further, by using a cast steel material having a specific chemical composition for the inner layer, excellent toughness can be secured. As described above, the composite sleeve for H-type rolling of the present invention can bring about a remarkable improvement in rolling performance and sleeve life due to the excellent synergistic action of the outer and inner layers, and its industrial application is significant.
【図１】Ｈ型鋼圧延用複合スリーブの横断面図である。FIG. 1 is a cross-sectional view of a composite sleeve for rolling an H-section steel.
(1) 外層 (2) 内層 (1) Outer layer (2) Inner layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ２２Ｃ 38/36 Ｃ２２Ｃ 38/36 38/44 38/44 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI C22C 38/36 C22C 38/36 38/44 38/44
Claims (1)
ｉ：０.２〜１.５％、Ｍｎ：０.２〜１.５％、Ｃｒ：
９.０〜２０.０％、Ｍｏ：１.０〜８.０％、Ｐ：０.１
％以下、Ｓ：０.１％以下、残部実質的にＦｅからなる
高クロム材の外層と、重量％にて、Ｃ：０.４〜０.８
％、Ｓｉ：１.１〜３.０％、Ｍｎ：０.２〜１.５％、Ｎ
ｉ：０.５％未満、Ｃｒ：２.５％以下、Ｍｏ：１.０％
以下、Ｐ：０.１％以下、Ｓ：０.１％以下、残部実質的
にＦｅからなる鋳鋼材の内層とが冶金学的に一体化され
ていることを特徴とするＨ型鋼圧延用複合スリーブ。1. C: 1.0 to 2.0% by weight, S
i: 0.2 to 1.5%, Mn: 0.2 to 1.5%, Cr:
9.0 to 20.0%, Mo: 1.0 to 8.0%, P: 0.1
%, S: 0.1% or less, the balance being an outer layer of a high chromium material substantially composed of Fe, and C: 0.4 to 0.8 in weight%.
%, Si: 1.1-3.0%, Mn: 0.2-1.5%, N
i: less than 0.5%, Cr: 2.5% or less, Mo: 1.0%
P: 0.1% or less, S: 0.1% or less, the balance being substantially metallurgically integrated with an inner layer of a cast steel material substantially made of Fe, wherein the composite for H-type steel rolling is characterized in that: sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24799297A JPH1177118A (en) | 1997-09-12 | 1997-09-12 | Combined sleeve for rolling wide-flange shape steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24799297A JPH1177118A (en) | 1997-09-12 | 1997-09-12 | Combined sleeve for rolling wide-flange shape steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1177118A true JPH1177118A (en) | 1999-03-23 |
Family
ID=17171589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24799297A Withdrawn JPH1177118A (en) | 1997-09-12 | 1997-09-12 | Combined sleeve for rolling wide-flange shape steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1177118A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423862C (en) * | 2006-12-12 | 2008-10-08 | 袁厚之 | Steel pipe-straightening roller for casting high chromium iron or high chrome steel |
| CN104087875A (en) * | 2014-07-31 | 2014-10-08 | 宁国市鑫煌矿冶配件制造有限公司 | Process for preparing grinding body used in wear-resistant high-hardness high-toughness ball grinding mill |
| CN104087847A (en) * | 2014-07-28 | 2014-10-08 | 宁国市宁武耐磨材料有限公司 | Ball mill lining plate containing eutectic carbide |
| CN104120359A (en) * | 2014-07-28 | 2014-10-29 | 宁国市宁武耐磨材料有限公司 | Lining plate with high abrasion resistance for ball mill |
| CN112756586A (en) * | 2020-12-22 | 2021-05-07 | 湖南江滨机器（集团）有限责任公司 | Mould and technological method for casting cast iron inlaid ring with cavity |
| CN115962231A (en) * | 2023-01-16 | 2023-04-14 | 泰尔重工股份有限公司 | Integrated universal coupling flange jaw and manufacturing method thereof |
-
1997
- 1997-09-12 JP JP24799297A patent/JPH1177118A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423862C (en) * | 2006-12-12 | 2008-10-08 | 袁厚之 | Steel pipe-straightening roller for casting high chromium iron or high chrome steel |
| CN104087847A (en) * | 2014-07-28 | 2014-10-08 | 宁国市宁武耐磨材料有限公司 | Ball mill lining plate containing eutectic carbide |
| CN104120359A (en) * | 2014-07-28 | 2014-10-29 | 宁国市宁武耐磨材料有限公司 | Lining plate with high abrasion resistance for ball mill |
| CN104087875A (en) * | 2014-07-31 | 2014-10-08 | 宁国市鑫煌矿冶配件制造有限公司 | Process for preparing grinding body used in wear-resistant high-hardness high-toughness ball grinding mill |
| CN112756586A (en) * | 2020-12-22 | 2021-05-07 | 湖南江滨机器（集团）有限责任公司 | Mould and technological method for casting cast iron inlaid ring with cavity |
| CN115962231A (en) * | 2023-01-16 | 2023-04-14 | 泰尔重工股份有限公司 | Integrated universal coupling flange jaw and manufacturing method thereof |
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| A300 | Withdrawal of application because of no request for examination |
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