JP2894757B2 - Abrasion-resistant roll and its manufacturing method - Google Patents
Abrasion-resistant roll and its manufacturing methodInfo
- Publication number
- JP2894757B2 JP2894757B2 JP33538489A JP33538489A JP2894757B2 JP 2894757 B2 JP2894757 B2 JP 2894757B2 JP 33538489 A JP33538489 A JP 33538489A JP 33538489 A JP33538489 A JP 33538489A JP 2894757 B2 JP2894757 B2 JP 2894757B2
- Authority
- JP
- Japan
- Prior art keywords
- roll
- powder
- weight
- wear
- speed 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
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、鋼材搬送ロール、熱間並びに冷間圧延ロー
ル等に使用するのに適した、耐摩耗性に優れたロール及
びその製造法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll excellent in abrasion resistance and suitable for use in a steel material conveying roll, a hot roll, a cold roll, and the like, and a production method thereof. Things.
鋼材搬送ロールや熱間並びに冷間圧延ロールとして、
ロール胴部表面を焼入れにより硬化させるか、あるいは
胴部表面を硬化材料の肉盛層で被覆した耐摩耗性ロール
が従来から使用されている。このような従来の耐摩耗性
ロールでは、低温での耐摩耗性は比較的良好であるが、
約600℃以上の高温下での耐摩耗性は不十分で、急速に
摩耗が進行する。As steel material transfer rolls and hot and cold rolling rolls,
Conventionally, wear-resistant rolls in which the surface of the roll body is hardened by quenching, or in which the body surface is coated with a hardfacing layer of a hardening material, have been used. Such conventional wear-resistant rolls have relatively good wear resistance at low temperatures,
Abrasion resistance at high temperatures of about 600 ° C or more is insufficient, and wear progresses rapidly.
かかる高温下での耐摩耗性を改善することを目的とし
て、Cr−Fe系、Cr−Ni−Fe系、Cr−Ni−Co−Fe系等の鉄
基耐熱合金、Cr−Co系、Cr−Ni−Co系等のCo基合金、Cr
−Ni系、Cr−Co−Ni系等のNi基合金などの金属マトリッ
クスに、WC、Cr3C2、CrC、SiC、TiC、Si3N4、ZrO2、Al2
O3等のセラミック粒子を分散混合させた金属−セラミッ
ク複合材層で、胴部表面を被覆したロールが提案され
た。（特開昭63−33108号） しかし、特開昭63−33108号に記載さている金属−セ
ラミック複合材層では、高温下での耐摩耗性が良好であ
るが、近年益々高くなる耐摩耗性の要求レベルに対して
は、なお不十分であった。For the purpose of improving the wear resistance under such high temperatures, iron-based heat-resistant alloys such as Cr-Fe, Cr-Ni-Fe, Cr-Ni-Co-Fe, Cr-Co, Cr- Co-base alloys such as Ni-Co, Cr
WC, Cr 3 C 2 , CrC, SiC, TiC, Si 3 N 4 , ZrO 2 , Al 2
O 3, metal ceramic particles are dispersed and mixed in - ceramic composite layer, a roll coating the body portion surface has been proposed. (JP-A-63-33108) However, the metal-ceramic composite layer described in JP-A-63-33108 has good wear resistance at high temperatures, but in recent years the wear resistance has become increasingly higher. Was still insufficient for the required level.
ところで、ロール材に炭化物の形成性金属を多量に加
え、これによりロール基地中に高硬度の金属炭化物を多
量に形成させれば、耐摩耗性を向上させることができる
と考えられる。特にバナジウム炭化物（VC）は他の金属
炭化物と比べて極めて高い硬度を有しており、VCをロー
ル基地中に形成することにより、耐摩耗性を格段に向上
させることができる。By the way, it is considered that abrasion resistance can be improved by adding a large amount of carbide-forming metal to the roll material and thereby forming a large amount of high-hardness metal carbide in the roll base. In particular, vanadium carbide (VC) has extremely high hardness as compared with other metal carbides. By forming VC in a roll base, wear resistance can be remarkably improved.
しかしながら、単にロール材にＶを多量に加えて鋳造
によりロールを形成するのでは、析出する炭化物が十分
に均一でなく、ロールの耐摩耗性向上の観点からは十分
でない。また鋳造性や加工性も低下する。However, simply forming a roll by casting by adding a large amount of V to the roll material is not sufficiently uniform in the precipitated carbides, and is not sufficient from the viewpoint of improving the wear resistance of the roll. In addition, castability and workability also decrease.
このような理由により例えば、特公昭42−23706号
は、Ｃ、Si、Ni、Co、Cr、Mo、Ｗ、Ｖ及びMnを含有する
耐摩耗性に優れた鋳鉄を開示しているが、そこではＶの
含有量を１〜６％の範囲と規定している。Ｖの含有量が
６％を超えると、鋳造性が劣るとともに脆弱化するため
である。Ｖの配合量が６％以下と低いために、上記組成
の鋳鉄では、高温鋼材用の搬送ロールや熱間並びに冷間
圧延ロール等に要求される耐摩耗性を得ることができな
い。For this reason, for example, Japanese Patent Publication No. 42-23706 discloses an abrasion-resistant cast iron containing C, Si, Ni, Co, Cr, Mo, W, V and Mn. Defines the V content in the range of 1 to 6%. If the content of V exceeds 6%, the castability is inferior and the alloy becomes brittle. Since the compounding amount of V is as low as 6% or less, cast iron having the above composition cannot obtain the wear resistance required for a transport roll for high-temperature steel, a hot roll, a cold roll, and the like.
一方、特開昭58−87249号、C2.4〜3.5％、Si0.5〜1.
3、Mn0.3〜0.8％、Ni0〜３％、Cr2〜７％、Mo2〜９％、
W0〜10％、V6〜14％、Co0〜４％、残部Fe及び通常の不
純物よりなる熱間圧延用耐摩耗性鋳鉄ロール材を開示し
ている。上記組成のロール材では、Ｖ量が上限14％と比
較的多量のＶを含有することができ、このためにロール
基地中に析出するVC量も多くなり、耐摩耗性に優れたロ
ールとなる。On the other hand, JP-A-58-87249, C 2.4-3.5%, Si 0.5-1.
3, Mn0.3 ~ 0.8%, Ni0 ~ 3%, Cr2 ~ 7%, Mo2 ~ 9%,
A wear-resistant cast iron roll material for hot rolling comprising W 0 to 10%, V 6 to 14%, Co 0 to 4%, balance Fe and ordinary impurities is disclosed. The roll material having the above composition can contain a relatively large amount of V with an upper limit of 14% in the amount of V. Therefore, the amount of VC precipitated in the roll base increases, resulting in a roll having excellent wear resistance. .
しかしながら、特開昭58−87249号のロール材におい
ては、ロール基地中に析出するVCの大きさ（粒径）及び
分布は必ずしも均一ではないという問題がある。However, the roll material disclosed in JP-A-58-87249 has a problem that the size (particle size) and distribution of VC precipitated in the roll matrix are not always uniform.
従って本発明の目的は、特に高温下での耐摩耗性に優
れ、かつ均一にVCが分散した表面層を有する耐摩耗性ロ
ール、及びその製造法を提供することにある。Accordingly, an object of the present invention is to provide a wear-resistant roll having a surface layer having excellent wear resistance particularly at high temperatures and having VC uniformly dispersed therein, and a method for producing the same.
本発明者は、上記目的を達成すべく種々検討を重ねた
結果、Ｖを含む特定組成のアトマイズ粉末ハイスに、さ
らにVC粉末を配合した複合材を用いればよいことを見出
し、本発明を完成させた。The present inventor has conducted various studies in order to achieve the above object, and as a result, has found that it is only necessary to use a composite material in which VC powder is further blended with atomized powdered high speed steel having a specific composition including V, and completed the present invention. Was.
すなわち、本発明の耐摩耗性ロールは、C1.2〜2.3重
量％、Cr3〜５重量％、Mo2〜10重量％、W3〜15重量％、
V3〜７重量％、Co3〜15重量％を含むアトマイズ粉末ハ
イスに、VC粉末を１〜15重量％配合してなる複合材で、
少なくともその表面を形成したことを特徴とする。That is, the abrasion-resistant roll of the present invention has C1.2 to 2.3% by weight, Cr3 to 5% by weight, Mo2 to 10% by weight, W3 to 15% by weight,
A composite material composed of 1 to 15% by weight of VC powder mixed with atomized powder high speed steel containing V3 to 7% by weight and Co3 to 15% by weight.
At least the surface is formed.
また、本発明の耐摩耗性ロールの製造法は、C1.2〜2.
3重量％、Cr3〜５重量％、Mo2〜10重量％、W3〜15重量
％、V3〜７重量％、Co3〜15重量％を含む溶融ハイスを
ガスアトマイズ法により粉末にし、これにVC粉末を１〜
15重量％配合した後、ロール芯材の周囲に配設した金属
カプセル内に充填し、HIP処理することを特徴とする。The method for producing a wear-resistant roll of the present invention is C1.2 to 2.
A molten high-speed steel containing 3% by weight, Cr 3 to 5% by weight, Mo 2 to 10% by weight, W 3 to 15% by weight, V 3 to 7% by weight, and Co 3 to 15% by weight is made into a powder by a gas atomizing method. ~
After blending at 15% by weight, the mixture is filled in a metal capsule disposed around the roll core material and subjected to HIP processing.
本発明を以下詳細に説明する。 The present invention will be described in detail below.
本発明において使用するアトマイズ粉末ハイスは、C
1.2〜2.3重量％、Cr3〜５重量％、Mo2〜10重量％、W3〜
15重量％、V3〜７重量％、Co3〜15重量％を含むハイス
（高速度工具鋼）である。The atomized powder high-speed steel used in the present invention is C
1.2 ~ 2.3wt%, Cr3 ~ 5wt%, Mo2 ~ 10wt%, W3 ~
High speed steel (high-speed tool steel) containing 15% by weight, V3 to 7% by weight, and Co3 to 15% by weight.
Ｃの含有量が1.2重量％未満では耐摩耗性向上効果が
小さく、2.3重量％を超えると脆化する。Crの含有量
は、３〜５重量％の範囲内にハイスに含まれる炭化物を
安定するのに最適であり、上記範囲外では炭化物の安定
化効果が低下する。Moの含有量は、２重量％未満では耐
摩耗性向上効果が小さく、10重量％を超えると脆化す
る。Ｗについても同様に、３重量％未満では耐摩耗性向
上効果が小さく、15重量％を超えると脆化する。Ｖは基
地中のＣと炭化物VCを形成し、特に耐摩耗性の向上に寄
与する。含有量が３重量％未満ではその効果が微弱であ
り、また７重量％を超える量とすると、後述するガスア
トマイズ法において、ハイスの溶融液の粘度を高くし、
適切なアトマイズ粉末ができないので好ましくない。ま
た、Coの含有量は、耐熱性を維持するうえで３〜15重量
％の範囲内が好ましく、この範囲外では耐熱性維持効果
が低下する。If the content of C is less than 1.2% by weight, the effect of improving the wear resistance is small, and if it exceeds 2.3% by weight, it becomes brittle. The content of Cr is optimal in the range of 3 to 5% by weight to stabilize the carbide contained in the high-speed steel. Outside the above range, the effect of stabilizing the carbide is reduced. If the content of Mo is less than 2% by weight, the effect of improving the wear resistance is small, and if it exceeds 10% by weight, it becomes brittle. Similarly, if W is less than 3% by weight, the effect of improving wear resistance is small, and if W exceeds 15% by weight, it becomes brittle. V forms carbide VC with C in the matrix, and particularly contributes to improvement of wear resistance. When the content is less than 3% by weight, the effect is weak, and when the content is more than 7% by weight, the viscosity of the melt of high-speed steel is increased in the gas atomization method described below,
It is not preferable because an appropriate atomized powder cannot be obtained. Further, the content of Co is preferably in the range of 3 to 15% by weight in order to maintain the heat resistance, and outside this range, the effect of maintaining the heat resistance is reduced.
上記粉末ハイスを製造するには、上記組成のハイスを
溶融し、ガスアトマイズ法により粉末化する。ガスアト
マイズ法により得る粉末のハイスの粒径は、１〜50μｍ
であることが望ましい。また粉末ハイス中にはVC粒子が
晶出するが、粉末ハイスの粒径を上記の範囲とすること
により、晶出VC粒子の粒径を１μｍ以下とすることがで
きる。なお、上記組成のハイスは溶融液の粘度が低いた
め、ガスアトマイズ法によって容易に粉末化することが
できる。In order to produce the powdered high-speed steel, the high-speed steel having the above composition is melted and powdered by a gas atomizing method. The particle size of the high-speed steel obtained by the gas atomization method is 1 to 50 μm.
It is desirable that VC particles are crystallized in the powdered high-speed steel. By setting the particle size of the powdered high-speed steel in the above range, the particle size of the crystallized VC particles can be reduced to 1 μm or less. Since the high-speed steel having the above composition has a low viscosity of the melt, it can be easily pulverized by a gas atomizing method.
更に、本発明においては、上記粉末ハイスにVC粉末を
配合する。VC粉末は硬度が高く、HIP処理において溶融
したり、ハイスと反応したりするようなことがなく、粉
末ハイスに配合することによって耐摩耗性を著しく向上
させることができる。Further, in the present invention, a VC powder is blended with the above powdered high speed steel. VC powder has high hardness and does not melt or react with high-speed steel in the HIP treatment. By blending with the powder high-speed steel, the wear resistance can be significantly improved.
配合したVC粉末の粒径は１〜50μｍであるのが好まし
く、更に粉末ハイス／配合したVC粉末の粒径比は30以下
であるのが好ましい。該粒径比が大きすぎると、粉末ハ
イスとVC粉末との混合が均一に行なえず、ロール中にア
トマイズ粉末とVC粉末とが一様に分散しにくくなり、そ
のために所望の機械的特性、耐摩耗性が得られなくな
る。The blended VC powder preferably has a particle size of 1 to 50 μm, and more preferably the powder HSS / blended VC powder has a particle size ratio of 30 or less. If the particle size ratio is too large, the mixing of the powdered high-speed steel and the VC powder cannot be performed uniformly, and it becomes difficult to uniformly disperse the atomized powder and the VC powder in the rolls. Abrasion cannot be obtained.
VC粉末の配合量は１〜15重量％、好ましくは２〜10重
量％である。配合量が少なすぎると耐摩耗性向上効果が
期待できず、逆に多すぎると複合材が脆化してしまう。The blending amount of the VC powder is 1 to 15% by weight, preferably 2 to 10% by weight. If the amount is too small, the effect of improving wear resistance cannot be expected, while if it is too large, the composite material becomes brittle.
以上に詳述した粉末ハイス及びVC粉末とを用いて、後
述する製法によりロールを製造すれば、ロールの表面層
中におけるVCの量を面積率で８〜25％とすることがで
き、もって耐摩耗性、機械的特性に優れているととも
に、後加工性にも良好となるロールとすることができ
る。If a roll is manufactured using the powdered high-speed steel and the VC powder described above in detail by a manufacturing method described later, the amount of VC in the surface layer of the roll can be set to 8 to 25% in area ratio, and thus the resistance can be improved. A roll having excellent abrasion and mechanical properties and good post-processability can be obtained.
次に本発明の耐摩耗性ロールの製造方法について説明
する。Next, a method for producing the wear-resistant roll of the present invention will be described.
アトマイズ粉末ハイスとVC粉末とを混合するには、従
来公知の任意の方法を用いることができるが、特に乾式
混合が好ましく、例えばＶ型混合機により４〜６時間混
合すればよい。In order to mix the atomized powder high speed steel and the VC powder, any conventionally known method can be used, but dry mixing is particularly preferable, and for example, mixing may be performed using a V-type mixer for 4 to 6 hours.
かくして得られた混合粉末Ｐを、第１図に示すよう
に、ロール芯材１の周囲に配設した金属カプセル２内に
充填し、金属カプセル２の上部に設けた脱気口３から吸
気して、金属カプセル２内を真空にし、次いでHIP処理
を施す。なお、金属カプセル２としては、例えば厚さ３
〜7mm程度の鋼あるいはステンレス板などを用いる。As shown in FIG. 1, the mixed powder P thus obtained is filled in a metal capsule 2 disposed around a roll core material 1, and air is sucked from a deaeration port 3 provided above the metal capsule 2. Then, the inside of the metal capsule 2 is evacuated and then subjected to HIP processing. The metal capsule 2 has, for example, a thickness of 3 mm.
Use a steel or stainless steel plate of about 7 mm.
HIP処理は、通常、温度1,100〜1,300℃、圧力1,000〜
1,500atmで、アルゴン等の不活性ガス雰囲気中で１〜５
時間行う。HIP treatment is usually performed at a temperature of 1,100 to 1,300 ° C and a pressure of 1,000 to
1,500 atm, 1-5 in inert gas atmosphere such as argon
Do time.
その後、金属カプセル２を旋盤で削り取るなどの方法
で取り除き、その後、例えば第２図に示す如きパターン
の熱処理を施す。次いで所定の形状に加工して、目的と
するロールを完成する。Thereafter, the metal capsule 2 is removed by a method such as scraping with a lathe, and thereafter, for example, a heat treatment in a pattern as shown in FIG. 2 is performed. Next, it is processed into a predetermined shape to complete a target roll.
以下、実施例により本発明を更に詳細に説明するが、
本発明はこれに限定されるものではない。Hereinafter, the present invention will be described in more detail by examples,
The present invention is not limited to this.
なお、各実施例における耐摩耗性の評価は、第３図に
示す圧延摩耗試験機に試験用ロールを組み込み、第１表
に示す試験条件で試験を行った後、試験用ロールの表面
に生じた摩耗の深さを触針式表面荒さ計（SURFCOM）を
用いて測定することにより行った。ここで第３図に示す
圧延摩耗試験機は、圧延機４と、圧延材Ｓを予熱する加
熱炉７と、圧延材Ｓを冷却する冷却水槽８と、圧延材の
巻取機９とテンションコントローラ10とからなる。The evaluation of the abrasion resistance in each example was carried out by assembling a test roll into a rolling abrasion tester shown in FIG. 3, performing a test under the test conditions shown in Table 1, and then forming a test roll on the surface of the test roll. The wear depth was measured by using a stylus type surface roughness meter (SURFCOM). Here, the rolling wear tester shown in FIG. 3 includes a rolling mill 4, a heating furnace 7 for preheating the rolled material S, a cooling water tank 8 for cooling the rolled material S, a rolled material winder 9 and a tension controller. Consists of ten.
実施例１〜5,比較例１〜２ ガスアトマイズ法により粉末化した、第２表に示す組
成の金属成分と、第２表に示すセラミック粉末とを、Ｖ
型混合機にて約５時間混合した。次いで、その混合粉末
を、第１図に示す直径35mm、長さ40mmのロール芯材１の
周囲に配設したSS41からなる厚さ5mmの金属カプセル２
内に、振動を加えながら十分に充填して、金属カプセル
２の上部に設けた脱気口３から吸気し、金属カプセル２
内を真空にした。その後、脱気口３を密閉し、アルゴン
ガス雰囲気中で、第２表に示す温度及び圧力下でHIP処
理を施した。なお、ロール芯材１の材質は第２表に示す
通りであった。 Examples 1 to 5 and Comparative Examples 1 to 2 A metal component having a composition shown in Table 2 and a ceramic powder shown in Table 2 powdered by a gas atomizing method were mixed with V
The mixture was mixed for about 5 hours using a mold mixer. Next, the mixed powder was applied to a 5 mm thick metal capsule 2 made of SS41 disposed around a roll core 1 having a diameter of 35 mm and a length of 40 mm shown in FIG.
The inside of the metal capsule 2 is filled sufficiently while applying vibration, and the air is sucked through a deaeration port 3 provided at the upper part of the metal capsule 2.
The inside was evacuated. Thereafter, the deaeration port 3 was closed, and HIP treatment was performed in an argon gas atmosphere at the temperature and pressure shown in Table 2. The material of the roll core 1 was as shown in Table 2.
HIP処理後、金属カプセル２を旋盤にて削り取り、次
いで第２図に示した熱処理パターンで熱処理を施した。
その後、表面を研磨して直径60mm、長さ40mmのロールを
作成した。After the HIP treatment, the metal capsule 2 was scraped off with a lathe, and then subjected to a heat treatment according to the heat treatment pattern shown in FIG.
Thereafter, the surface was polished to form a roll having a diameter of 60 mm and a length of 40 mm.
このようにして作成した各ロールについて、前記圧延
シミュレーション試験により、耐摩耗性を評価した。結
果は、第３表に示す通りであった。The wear resistance of each roll thus prepared was evaluated by the above-mentioned rolling simulation test. The results were as shown in Table 3.
なお、実施例１〜５及び比較例１で金属成分として用
いたハイスＡ、Ｂ、Ｃはいずれも溶融液粘度が低く、ガ
スアトマイズ法により、容易に粉末化することができた
が、比較例２で金属成分として用いたCr−Ni−Co系鋼は
溶融液粘度が高く、ガスアトマイズ法により均一な粒径
の粉末を得るのが困難であった。 The high speed steels A, B, and C used as metal components in Examples 1 to 5 and Comparative Example 1 each had a low melt viscosity and could be easily powdered by a gas atomizing method. However, the Cr-Ni-Co steel used as a metal component had a high melt viscosity, and it was difficult to obtain powder having a uniform particle size by a gas atomizing method.
本発明によれば、VCを含むアトマイズ粉末ハイス及び
VC粉末のブレンドにより、ロール基地中のVC量を多くす
ることができるので、ロールの特に高温下での耐摩耗性
が著しく向上する。従って、高温鋼材搬送ロールや、鉄
あるいは非鉄金属用熱間圧延ロールに適した耐摩耗性ロ
ールとすることができる。According to the present invention, atomized powder high speed steel containing VC and
By blending the VC powder, the amount of VC in the roll matrix can be increased, so that the abrasion resistance of the roll, especially at high temperatures, is significantly improved. Therefore, a wear-resistant roll suitable for a high-temperature steel material conveying roll or a hot rolling roll for ferrous or non-ferrous metals can be obtained.
また、本発明で使用するハイスは溶融液粘度が低く、
ガスアトマイズ法により容易に粉末化することができ、
均一な粒径の粉末ハイスとすることができるため、得ら
れたロールも均質となる。さらに粉末ハイス及びVC粉末
の粒径を特定の大きさに規定しているので、粉末ハイス
とVC粉末とが一様に分散してなるロールとすることがで
き、もってロール基地中のVCの分散は一様となり、耐摩
耗性及び機械的特性に優れたものとなる。Further, the high speed steel used in the present invention has a low melt viscosity,
It can be easily pulverized by gas atomizing method,
Since the powdered high-speed steel having a uniform particle size can be obtained, the obtained roll is also homogeneous. Furthermore, since the particle size of the powdered high-speed steel and the VC powder is specified to a specific size, it is possible to form a roll in which the powdered high-speed steel and the VC powder are uniformly dispersed, thereby dispersing the VC in the roll base. Is uniform and has excellent wear resistance and mechanical properties.
なお、本発明のロールは上記したような高温下での使
用に特定されるものではなく、冷間圧延ロール等の低温
で使用されるロールに用いても耐摩耗性が著しく大きな
ロールとして併用できる。The roll of the present invention is not specified for use at high temperatures as described above, and can be used as a roll having extremely large wear resistance even when used for a roll used at a low temperature such as a cold roll. .
第１図は本発明の耐摩耗性ロールの製造法を説明するた
めの装置の断面図であり、 第２図は本発明の耐摩耗性ロールを製造する際に適用さ
れる熱処理条件の一例を示す熱処理パターン図であり、 第３図は、ロールの耐摩耗性を測定する装置の概略図で
ある。 １……ロール芯材 ２……金属カプセル ４……圧延機 ５……上ロール ６……下ロール ７……加熱炉 ８……冷却水槽 ９……巻取機 10……テンションコントローラ Ｐ……混合粉末 Ｓ……圧延材FIG. 1 is a cross-sectional view of an apparatus for explaining a method of manufacturing a wear-resistant roll of the present invention, and FIG. 2 shows an example of heat treatment conditions applied when manufacturing a wear-resistant roll of the present invention. FIG. 3 is a schematic view of an apparatus for measuring the abrasion resistance of a roll. DESCRIPTION OF SYMBOLS 1 ... Roll core material 2 ... Metal capsule 4 ... Rolling machine 5 ... Upper roll 6 ... Lower roll 7 ... Heating furnace 8 ... Cooling water tank 9 ... Winding machine 10 ... Tension controller P ... Mixed powder S: Rolled material
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−192806（ＪＰ，Ａ) 特開 平３−193848（ＪＰ，Ａ) 特開 昭57−47513（ＪＰ，Ａ) 特開 昭59−182944（ＪＰ，Ａ) 特公 昭62−47626（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) B21B 27/00 C22C 33/02 C22C 38/00 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-2-192806 (JP, A) JP-A-3-193848 (JP, A) JP-A-57-47513 (JP, A) JP-A-59-1979 182944 (JP, A) JP 62-47626 (JP, B2) (58) Fields investigated (Int. Cl. 6 , DB name) B21B 27/00 C22C 33/02 C22C 38/00
Claims (5)
0重量％、W3〜15重量％、V3〜７重量％、Co3〜15重量％
を含むアトマイズ粉末ハイスに、VC粉末を１〜15重量％
配合してなる複合材で少なくともその外層を形成したこ
とを特徴とする耐摩耗性ロール。1. C1.2 to 2.3% by weight, Cr3 to 5% by weight, Mo2 to 1
0 wt%, W3-15 wt%, V3-7 wt%, Co3-15 wt%
1-15% by weight of VC powder in atomized powder high speed steel containing
A wear-resistant roll characterized in that at least the outer layer thereof is formed of a compounded material.
て、前記アトマイズ粉末ハイス並びに前記配合したVC粉
末の粒径が１〜50μｍであり、かつ前記アトマイズ粉末
ハイスと前記配合したVC粉末との粒径比が30以下である
ことを特徴とする耐摩耗性ロール。2. The wear-resistant roll according to claim 1, wherein said atomized powder high-speed steel and said compounded VC powder have a particle size of 1 to 50 μm, and said atomized powder high-speed steel and said compounded VC powder are mixed together. A wear-resistant roll having a particle size ratio of 30 or less.
0重量％、W3〜15重量％、V3〜７重量％、Co3〜15重量％
を含む溶融ハイスをガスアトマイズ法により粉末にし、
これにVC粉末を１〜15重量％配合した後、ロール芯材の
周囲に配設した金属カプセル内に充填し、HIP処理する
ことを特徴とする耐摩耗性ロールの製造法。3. C1.2 to 2.3% by weight, Cr3 to 5% by weight, Mo2 to 1
0 wt%, W3-15 wt%, V3-7 wt%, Co3-15 wt%
Into a powder by gas atomizing method,
A method for producing a wear-resistant roll, comprising mixing VC powder in an amount of 1 to 15% by weight, filling in a metal capsule disposed around a roll core material, and performing HIP treatment.
において、前記アトマイズハイス並びに前記配合したVC
粉末の粒径が１〜50μｍであり、かつ前記アトマイズ粉
末ハイスと前記配合したVC粉末との粒径比が30以下であ
ることを特徴とする耐摩耗性ロールの製造法。4. The method for producing a wear-resistant roll according to claim 3, wherein said atomized high-speed steel and said compounded VC are mixed.
A method for producing a wear-resistant roll, wherein the particle size of the powder is 1 to 50 μm, and the particle size ratio between the atomized powder high-speed steel and the blended VC powder is 30 or less.
製造法において、前記HIP処理を1,000〜1,300℃、1,000
〜1,500atmで１〜５時間行うことを特徴とする耐摩耗性
ロールの製造法。5. The method for producing a wear-resistant roll according to claim 3, wherein the HIP treatment is performed at 1,000 to 1,300 ° C.
A method for producing a wear-resistant roll, wherein the method is performed at 1,500 atm for 1 to 5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33538489A JP2894757B2 (en) | 1989-12-25 | 1989-12-25 | Abrasion-resistant roll and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33538489A JP2894757B2 (en) | 1989-12-25 | 1989-12-25 | Abrasion-resistant roll and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03193205A JPH03193205A (en) | 1991-08-23 |
| JP2894757B2 true JP2894757B2 (en) | 1999-05-24 |
Family
ID=18287946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33538489A Expired - Lifetime JP2894757B2 (en) | 1989-12-25 | 1989-12-25 | Abrasion-resistant roll and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2894757B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE541903C2 (en) * | 2017-11-22 | 2020-01-02 | Vbn Components Ab | High hardness 3d printed steel product |
-
1989
- 1989-12-25 JP JP33538489A patent/JP2894757B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03193205A (en) | 1991-08-23 |
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