JPH05287452A - Alloy steel powder for sintered compact and sintered compact having high strength, high fatigue strength and high toughness - Google Patents
Alloy steel powder for sintered compact and sintered compact having high strength, high fatigue strength and high toughnessInfo
- Publication number
- JPH05287452A JPH05287452A JP12793992A JP12793992A JPH05287452A JP H05287452 A JPH05287452 A JP H05287452A JP 12793992 A JP12793992 A JP 12793992A JP 12793992 A JP12793992 A JP 12793992A JP H05287452 A JPH05287452 A JP H05287452A
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- Prior art keywords
- strength
- less
- sintered compact
- alloy steel
- toughness
- Prior art date
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、高強度、高疲労強度
および高靱性が要求される焼結体用合金鋼粉および焼結
体に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alloy steel powder for a sintered body and a sintered body which are required to have high strength, high fatigue strength and high toughness.
【０００２】[0002]
【従来の技術】焼結材は、溶製材に比較してコスト的に
有利であり、自動車用部品、ＯＡ機器用部品などに広く
用いられている。しかしながら、焼結材には空孔が存在
することなどから強度、疲労強度および靱性が低いとい
う欠点を有している。したがって、焼結材の用途を拡大
するうえからも強度、疲労強度および靱性の向上を図る
ことが肝要である。2. Description of the Related Art Sintered materials are more cost effective than ingot materials and are widely used in automobile parts, office automation equipment parts and the like. However, the sintered material has the drawbacks of low strength, fatigue strength and toughness due to the presence of pores and the like. Therefore, it is important to improve the strength, fatigue strength and toughness in order to expand the applications of the sintered material.
【０００３】焼結材料の強度向上をはかるため、Cr-Mn
系合金鋼粉（特公昭58-10962号公報）が用いられてき
た。Cr、Mnは焼入性が高いため、熱処理後の強度が高く
なるという長所があるが、易酸化性元素であるため、Cr
-Mn 複合酸化物を生成し、疲労強度および靱性を低下さ
せる欠点がある。本出願人はすでに、Mnを低減し、Nb、
Ｖを添加したCr系合金鋼粉（特願平２−285982号）を開
発している。しかしながら、これは、Nb、Ｖの炭窒化物
析出強化機構によって焼結体強度を高めているため、炭
窒化物が破壊の起点となり、疲労強度および靱性を低下
させる欠点があることが本発明者らの研究により明らか
になった。In order to improve the strength of the sintered material, Cr-Mn
Based alloy steel powder (Japanese Patent Publication No. 58-10962) has been used. Since Cr and Mn have high hardenability, they have the advantage of high strength after heat treatment.
-It has a drawback that it produces Mn complex oxide and reduces fatigue strength and toughness. The Applicant has already reduced Mn, Nb,
We are developing a Cr-based alloy steel powder containing V (Japanese Patent Application No. 2-285982). However, since this increases the strength of the sintered body by the carbonitride precipitation strengthening mechanism of Nb and V, the carbonitride becomes a starting point of fracture, and there is a drawback that the fatigue strength and toughness are lowered. These studies have revealed.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、このような
従来の焼結材料の問題点を解決し、高強度、高疲労強度
および高靱性を達成する焼結体用合金鋼粉および焼結体
を提供することを目的とするものである。DISCLOSURE OF THE INVENTION The present invention solves the above problems of conventional sintered materials and achieves high strength, high fatigue strength and high toughness, alloy steel powder for sintered body and sintering. It is intended to provide the body.
【０００５】[0005]
【課題を解決するための手段】本発明は、重量％にて、
Ｃ： 0.1％以下、Mn：0.08％以下、Cr： 0.5〜３％、M
o： 0.1〜２％、Ｓ：0.01％以下、Ｐ：0.01％以下、
Ｏ： 0.2％以下を含有し、さらに必要に応じてNi： 0.2
〜 2.5％およびCu： 0.5〜 2.5％のいずれか１種または
両方とも含有し、残部は不可避的不純物およびFeからな
ることを特徴とする高強度、高疲労強度および高靱性を
有する焼結体用合金鋼粉であり、また本発明は、重量％
にて、Ｃ： 0.2〜1.2 ％、Mn：0.08％以下、Cr： 0.5〜
３％、Mo： 0.1〜２％、Ｓ：0.01％以下、Ｐ：0.01％以
下、Ｏ： 0.2％以下を含有し、さらに必要に応じてNi：
0.2〜 2.5％およびCu： 0.5〜 2.5％のいずれか１種ま
たは両方とも含有し、残部は不可避的不純物およびFeか
らなることを特徴とする高強度、高疲労強度および高靱
性を有する焼結体である。The present invention, in% by weight,
C: 0.1% or less, Mn: 0.08% or less, Cr: 0.5 to 3%, M
o: 0.1 to 2%, S: 0.01% or less, P: 0.01% or less,
O: contains 0.2% or less, and if necessary, Ni: 0.2
~ 2.5% and Cu: 0.5 to 2.5%, one or both of them, with the balance being unavoidable impurities and Fe, for high strength, high fatigue strength and high toughness. Alloy steel powder, and the present invention also comprises:
At C: 0.2-1.2%, Mn: 0.08% or less, Cr: 0.5-
3%, Mo: 0.1 to 2%, S: 0.01% or less, P: 0.01% or less, O: 0.2% or less, and if necessary, Ni:
Sintered body having high strength, high fatigue strength and high toughness, characterized in that it contains 0.2 to 2.5% and Cu: 0.5 to 2.5%, or both, and the balance is inevitable impurities and Fe. Is.
【０００６】なお、本発明の合金鋼粉は、上記組成に調
整した溶鋼を水アトマイズすることにより容易に製造す
ることができる。また本発明の焼結体は、本発明の合金
鋼粉に目標量の黒鉛粉を加え、さらにステアリン酸亜鉛
粉等の潤滑剤を添加混合したのち、圧縮成形したのち、
焼結することにより容易に製造することができる。ま
た、この焼結体にさらに浸炭処理を行い、引き続き油焼
入れしたのち焼戻し処理を施すこともできる。The alloy steel powder of the present invention can be easily manufactured by water atomizing the molten steel adjusted to the above composition. Further, the sintered body of the present invention, after adding a target amount of graphite powder to the alloy steel powder of the present invention, and further adding and mixing a lubricant such as zinc stearate powder, after compression molding,
It can be easily manufactured by sintering. Further, the sintered body may be further carburized, oil-quenched, and then tempered.
【０００７】[0007]
【作用】この発明の合金鋼粉ならびに焼結体の成分限定
理由を以下に述べる。 Ｃ： 0.1％以下（合金鋼粉） Ｃは鋼中に侵入型に固溶してフィライト地を硬化させる
元素である。 0.1重量％（以下単に％と記す）を超えて
含有させると粉末の硬化が著しくなり、圧縮性が低下す
る。したがって、その含有量は 0.1％以下とする。The reason for limiting the components of the alloy steel powder and the sintered body of the present invention will be described below. C: 0.1% or less (alloy steel powder) C is an element that hardens the phyllite ground by forming an interstitial solid solution in steel. If the content exceeds 0.1% by weight (hereinafter simply referred to as "%"), the powder is significantly hardened and the compressibility is lowered. Therefore, its content should be 0.1% or less.
【０００８】Ｃ： 0.2〜1.2 ％（焼結体） Ｃは、鋼の強度を向上させる元素であるが、これらの効
果を得るためには焼結体中の含有量は0.2 ％以上を必要
とする。しかし、1.2 ％を超えるとセメンタイトが析出
し、強度、靱性を低下させる。したがって、その含有量
は0.2 〜1.2 ％とする。添加方法は、黒鉛粉を混合した
り、浸炭熱処理を施したりして焼結体中に残存させる。
浸炭熱処理した場合、焼結体内にＣ量分布があるが、総
量で請求範囲内であればよい。C: 0.2 to 1.2% (sintered body) C is an element that improves the strength of steel, but in order to obtain these effects, the content in the sintered body must be 0.2% or more. To do. However, if it exceeds 1.2%, cementite precipitates, which lowers the strength and toughness. Therefore, its content should be 0.2 to 1.2%. As an addition method, graphite powder is mixed or subjected to a carburizing heat treatment so as to remain in the sintered body.
In the case of carburizing heat treatment, there is a C amount distribution in the sintered body, but the total amount may be within the claimed range.
【０００９】次に以下に述べる成分は合金鋼粉ならびに
焼結体に共通に適用される。 Mn：0.08％以下 Mnは、焼入性向上、固溶強化などによって、鋼の強度を
向上させるが、0.08％を超えて含有させると酸化物の生
成が多くなり、これが破壊の起点となって、疲労強度お
よび靱性を低下させる。したがって、その含有量は0.08
％以下とする。The components described below are commonly applied to alloy steel powder and sintered bodies. Mn: 0.08% or less Mn improves the strength of steel by improving hardenability and solid solution strengthening, but if it is contained in excess of 0.08%, oxides increase, which becomes the starting point of fracture. , Reduces fatigue strength and toughness. Therefore, its content is 0.08
% Or less.
【００１０】Cr： 0.5〜３％ Crは、焼入性を向上させて、引張強度および疲労強度を
向上させ、さらに熱処理後の硬さを高め耐摩耗性を向上
させる効果がある。これらの効果を得るためには含有量
は 0.5％以上を必要とする。しかし、焼結体は粉末を素
材とするため３％を超えて含有させると酸化物の生成が
多くなり、これが疲労破壊の起点となって、疲労強度を
低下させる。したがって、その含有量は 0.5〜３％とす
る。Cr: 0.5-3% Cr has the effects of improving hardenability, tensile strength and fatigue strength, and further increasing hardness after heat treatment and improving wear resistance. To obtain these effects, the content must be 0.5% or more. However, since the sintered body is made of powder as a raw material, if it is contained in an amount of more than 3%, the amount of oxides is increased, which becomes the starting point of fatigue fracture and reduces the fatigue strength. Therefore, its content should be 0.5 to 3%.
【００１１】Mo： 0.1〜２％ Moは、焼入性向上、固溶強化、析出強化などによって、
鋼の強度を向上させるが、含有量が 0.1％未満であると
その効果は小さく、２％を超えると靭性が低下する。し
たがって、その含有量は 0.1〜２％とする。 Ｓ：0.01％以下 Ｓの低減はこの発明の特徴の一つであるが、Mnを0.08％
以下にすることによって、MnＳが減少し固溶Ｓが増加す
る。Ｓの含有量が0.01％を超えると固溶Ｓが増え、粒界
強度が低下する。したがって、その含有量は0.01％以下
とする。Mo: 0.1 to 2% Mo improves the hardenability, solid solution strengthening, precipitation strengthening, etc.
Although it improves the strength of steel, its effect is small when the content is less than 0.1%, and the toughness decreases when it exceeds 2%. Therefore, the content is 0.1 to 2%. S: 0.01% or less S reduction is one of the features of this invention, but Mn is 0.08%
By the following, MnS decreases and solid solution S increases. When the content of S exceeds 0.01%, the amount of solid solution S increases and the grain boundary strength decreases. Therefore, its content should be 0.01% or less.
【００１２】Ｐ：0.01％以下 Ｐの低減はこの発明の特徴の一つであるが、Mn、Ｓの含
有量が多いときは靭性に影響を及ぼさないが、Mnが0.08
％以下、Ｓが0.01％以下のときは、Ｐを0.01％以下にす
ることによって、粒界強度が増加し、靭性が向上する。
したがって、その含有量は0.01％以下とする。 Ｏ:0.2％以下 Ｏは、焼結体の機械的特性に大きな影響を及ぼす元素
で、低ければ低いほど良く0.05％以下が好ましい。一
方、含有量が 0.2％を超えると多量の酸化物が生成され
る。したがって、その含有量は 0.2％以下とする。P: 0.01% or less P reduction is one of the features of the present invention, but when the content of Mn and S is large, it does not affect toughness, but Mn is 0.08.
% Or less and S is 0.01% or less, the grain boundary strength is increased and the toughness is improved by setting P to 0.01% or less.
Therefore, its content should be 0.01% or less. O: 0.2% or less O is an element that has a great influence on the mechanical properties of the sintered body, and the lower it is, the better and the content is preferably 0.05% or less. On the other hand, if the content exceeds 0.2%, a large amount of oxide is produced. Therefore, its content should be 0.2% or less.
【００１３】Ni： 0.2〜 2.5％ Niは、焼入性向上、固溶強化などによって、鋼の強度を
向上させ、さらに靭性をも向上させるが、含有量が 0.2
％未満であるとその効果は小さく、 2.5％を超えると過
剰のオーステナイトが生成され、むしろ強度が低下す
る。したがって、その含有量は 0.2〜 2.5％とする。 Cu： 0.5〜 2.5％ Cuは、焼入性向上、固溶強化などによって、鋼の強度を
向上させるが、含有量が 0.5％未満であるとその効果は
小さく、 2.5％を超えると強度、靭性が低下する。した
がって、その含有量は 0.5〜 2.5％とする。Ni: 0.2-2.5% Ni improves the hardenability and strengthens the solid solution to improve the strength of the steel and also the toughness, but its content is 0.2
If it is less than%, the effect is small, and if it exceeds 2.5%, excessive austenite is produced, and the strength is rather lowered. Therefore, its content should be 0.2-2.5%. Cu: 0.5 to 2.5% Cu improves the strength of steel by improving hardenability and solid solution strengthening, but if the content is less than 0.5%, its effect is small, and if it exceeds 2.5%, strength and toughness are improved. Is reduced. Therefore, its content should be 0.5-2.5%.
【００１４】本発明では、以上のように合金鋼粉ならび
に焼結体の組成を限定したので、焼結体としたとき靱性
の向上がはかれ、また、疲労破壊の起点が少ないものが
でき、その結果、疲労強度の向上がはかれた。また引張
り強度の向上はCr、Mo等を含有させていることにより十
分達成されている。In the present invention, since the composition of the alloy steel powder and the sintered body is limited as described above, the toughness of the sintered body can be improved, and the starting point of fatigue fracture can be reduced. As a result, the fatigue strength was improved. Further, the improvement of the tensile strength has been sufficiently achieved by containing Cr, Mo and the like.
【００１５】[0015]
実施例１ 化学成分組成を種々に変化させて、水アトマイズ法にて
製造し、仕上還元した後の表１に示す合金鋼粉に、黒鉛
粉：0.15重量％およびステアリン酸亜鉛粉：１重量％を
添加混合したのち、圧縮成形により、密度：7.10ｇ／cm
3 の成形体を作製した。これらの成形体を窒素雰囲気
中、1250℃、60分間の条件での焼結を行ったのち、 890
℃で 120分間の浸炭処理（雰囲気のカーボンポテンシャ
ル： 0.9％）に続いて油焼入れしたのち、 150℃で60分
間の焼戻し処理を施した。このようにして得られた浸炭
熱処理焼結体について、引張強さ、耐久疲れ強さならび
にシャルピー衝撃値を調べた。これらの実験結果を表２
に示す。この表から明らかなようにこの発明の適合例は
すべて引張強さ、耐久疲れ強さ、シャルピー衝撃値とも
それぞれ125kgf/mm2、45kgf/mm2 、1.0kgf・m/cm2 以上
と良好な値を示している。なお、耐久疲れ強さは、小野
式回転曲げ試験機を用い、応力−繰り返し数曲線より求
めた107 回の繰り返し数を示す応力とした。またシャル
ピー衝撃値はノッチなしで室温で試験した。Example 1 The alloy steel powder shown in Table 1 after being manufactured by a water atomizing method with various chemical composition changed and subjected to finish reduction, graphite powder: 0.15 wt% and zinc stearate powder: 1 wt% After adding and mixing, by compression molding, density: 7.10 g / cm
A molded body of 3 was produced. After sintering these compacts in a nitrogen atmosphere at 1250 ° C. for 60 minutes,
After carburizing at 120 ° C for 120 minutes (atmosphere carbon potential: 0.9%), oil quenching was performed, and then tempering at 150 ° C for 60 minutes. With respect to the carburized heat-treated sintered body thus obtained, the tensile strength, the durable fatigue strength and the Charpy impact value were examined. Table 2 shows the results of these experiments.
Shown in. All adaptations tensile strength of apparent this invention from this table, endurance fatigue strength, respectively Charpy impact value and also 125kgf / mm 2, 45kgf / mm 2, 1.0kgf · m / cm 2 or more and a good value Is shown. The durable fatigue strength was defined as the stress indicating the number of repetitions of 10 7 times, which was obtained from the stress-repetition number curve using an Ono-type rotary bending tester. The Charpy impact value was tested at room temperature without notches.
【００１６】[0016]
【表１】 [Table 1]
【００１７】[0017]
【表２】 [Table 2]
【００１８】実施例２ 化学成分組成を種々に変化させた表３に組成を示す合金
鋼粉に、黒鉛粉： 0.9重量％およびステアリン酸亜鉛
粉：１重量％を添加混合したのち、圧縮成形により、密
度：7.0g/cm3の成形体を作製した。これらの成形体を、
窒素雰囲気中、1250℃、60分間の条件で焼結を行った。
このようにして得られた焼結体について、引張強さ、耐
久疲れ強さならびにシャルピー衝撃値を実施例１と同様
に調べた。これらの実験結果を表４に示す。この表から
明らかなように、この発明の適合例はすべて引張強さ、
耐久疲れ強さ、シャルピー衝撃値ともにそれぞれ80kgf/
mm2、35kgf/mm2 、2.0kgf・m/cm2 以上と良好な値を示
している。Example 2 Graphite powder: 0.9% by weight and zinc stearate powder: 1% by weight were added to and mixed with alloy steel powders having the compositions shown in Table 3 with various chemical composition changes, and then compression molding was performed. A molded body having a density of 7.0 g / cm 3 was produced. These molded bodies,
Sintering was performed at 1250 ° C. for 60 minutes in a nitrogen atmosphere.
The tensile strength, endurance fatigue strength, and Charpy impact value of the thus obtained sintered body were examined in the same manner as in Example 1. The results of these experiments are shown in Table 4. As is apparent from this table, all the conforming examples of the present invention have tensile strength,
Endurance fatigue strength and Charpy impact value are both 80 kgf /
It shows good values of mm 2 , 35 kgf / mm 2 , 2.0 kgf · m / cm 2 and above.
【００１９】[0019]
【表３】 [Table 3]
【００２０】[0020]
【表４】 [Table 4]
【００２１】実施例３ 化学成分組成を種々に変化させた表３に組成を示す合金
鋼粉に、ステアリン酸亜鉛粉：１重量％を添加混合した
のち、圧縮成形により密度：7.0g/cm3の成形体を作製し
た。これらの成形体を、窒素雰囲気中、1250℃、60分間
の条件で焼結を行ったのち、890 ℃で 120分間の浸炭処
理（カーボンポテンシャル0.9 ％に続いて油焼入れした
のち、150 ℃で60分間の焼戻し処理を施した。このよう
にして得られた浸炭熱処理焼結体について、実施例１と
同様に引張強さ、耐久疲れ強さならびにシャルピー衝撃
値を調べた。これらの実験結果を表５に示す。この表か
ら明らかなように、この発明の適合例はすべて引張強
さ、耐久疲れ強さ、シャルピー衝撃値ともにそれぞれ12
5kgf/mm2、45kgf/mm2 、1.0kgf・m/cm2 以上と良好な値
を示している。Example 3 Zinc stearate powder: 1% by weight was added to and mixed with alloy steel powder having the composition shown in Table 3 in which the chemical composition was variously changed, and then the density was 7.0 g / cm 3 by compression molding. The molded body of was produced. These compacts were sintered in a nitrogen atmosphere at 1250 ° C for 60 minutes, then carburized at 890 ° C for 120 minutes (carbon potential 0.9% followed by oil quenching, then at 150 ° C for 60 minutes). The carburized heat-treated sintered body thus obtained was examined for tensile strength, endurance fatigue strength and Charpy impact value in the same manner as in Example 1. These experimental results are shown in Tables. As is clear from this table, all the conforming examples of the present invention have a tensile strength, a durable fatigue strength and a Charpy impact value of 12 respectively.
Good values of 5 kgf / mm 2 , 45 kgf / mm 2 , 1.0 kgf · m / cm 2 and above are shown.
【００２２】[0022]
【表５】 [Table 5]
【００２３】実施例４ 表３に示す粉末記号Ａの合金鋼粉に、黒鉛粉：0.1 〜1.
3 重量％およびステアリン酸亜鉛粉：１重量％を添加混
合したのち、圧縮成形により、密度：7.0g/cm3の成形体
を作製した。これらの成形体を、窒素雰囲気中、1250
℃、60分間の条件で焼結を行った。このようにして得ら
れた焼結体について、実施例１と同様に引張強さ、耐久
疲れ強さならびにシャルピー衝撃値を調べた。これらの
実験結果を表６に示す。この表から明らかなように、こ
の発明の適合例はすべて引張強さ、耐久疲れ強さ、シャ
ルピー衝撃値ともにそれぞれ80kgf/mm2 、35kgf/mm2 、
2.0kgf・m/cm2 以上と良好な値を示している。Example 4 Graphite powder: 0.1-1.
After 3% by weight and zinc stearate powder: 1% by weight were added and mixed, a compact having a density of 7.0 g / cm 3 was produced by compression molding. These moldings were placed in a nitrogen atmosphere at 1250
Sintering was performed under the conditions of 60 ° C. and 60 minutes. With respect to the sintered body thus obtained, the tensile strength, the durable fatigue strength and the Charpy impact value were examined in the same manner as in Example 1. The results of these experiments are shown in Table 6. As it is apparent from this table, all adaptations tensile strength of the present invention, durability fatigue strength, 80 kgf / mm 2, respectively Charpy impact value both, 35 kgf / mm 2,
A good value of 2.0 kgf · m / cm 2 or more is shown.
【００２４】[0024]
【表６】 [Table 6]
【００２５】[0025]
【発明の効果】この発明は、合金鋼粉の化学成分組成、
特にMn量、Ｓ量、Ｐ量を適正化することにより、焼結体
の引張強度、疲労強度、靱性を向上させたものであり、
高強度焼結部品の用途を拡大するものである。EFFECT OF THE INVENTION The present invention relates to the chemical composition of alloy steel powder,
In particular, by optimizing the Mn amount, S amount, and P amount, the tensile strength, fatigue strength, and toughness of the sintered body are improved.
It expands the applications of high-strength sintered parts.
Claims (4)
％以下、Cr： 0.5〜３％、Mo： 0.1〜２％、Ｓ：0.01％
以下、Ｐ：0.01％以下、Ｏ： 0.2％以下を含有し、残部
は不可避的不純物およびFeからなることを特徴とする高
強度、高疲労強度および高靱性を有する焼結体用合金鋼
粉。1. C: 0.1% or less by weight%, Mn: 0.08
% Or less, Cr: 0.5 to 3%, Mo: 0.1 to 2%, S: 0.01%
Hereinafter, an alloy steel powder for a sintered body having high strength, high fatigue strength and high toughness, characterized by containing P: 0.01% or less, O: 0.2% or less, and the balance being inevitable impurities and Fe.
％以下、Cr： 0.5〜３％、Mo： 0.1〜２％、Ｓ：0.01％
以下、Ｐ：0.01％以下、Ｏ： 0.2％以下を含有し、さら
にNi： 0.2〜 2.5％およびCu： 0.5〜 2.5％のいずれか
１種または両方とも含有し、残部は不可避的不純物およ
びFeからなることを特徴とする高強度、高疲労強度およ
び高靱性を有する焼結体用合金鋼粉。2. In% by weight, C: 0.1% or less, Mn: 0.08
% Or less, Cr: 0.5 to 3%, Mo: 0.1 to 2%, S: 0.01%
In the following, P: 0.01% or less, O: 0.2% or less, further, Ni: 0.2 to 2.5% and Cu: 0.5 to 2.5%, either or both of them, and the balance from inevitable impurities and Fe. An alloy steel powder for a sintered body having high strength, high fatigue strength, and high toughness.
08％以下、Cr： 0.5〜３％、Mo： 0.1〜２％、Ｓ：0.01
％以下、Ｐ：0.01％以下、Ｏ： 0.2％以下を含有し、残
部は不可避的不純物およびFeからなることを特徴とする
高強度、高疲労強度および高靱性を有する焼結体。3. C: 0.2 to 1.2% and Mn: 0,% by weight.
08% or less, Cr: 0.5-3%, Mo: 0.1-2%, S: 0.01
% Or less, P: 0.01% or less, O: 0.2% or less, and the balance being unavoidable impurities and Fe, having high strength, high fatigue strength, and high toughness.
08％以下、Cr： 0.5〜３％、Mo： 0.1〜２％、Ｓ：0.01
％以下、Ｐ：0.01％以下、Ｏ： 0.2％以下を含有し、さ
らにNi： 0.2〜 2.5％およびCu： 0.5〜 2.5％のいずれ
か１種または両方とも含有し、残部は不可避的不純物お
よびFeからなることを特徴とする高強度、高疲労強度お
よび高靱性を有する焼結体。4. In weight%, C: 0.2 to 1.2%, Mn: 0.
08% or less, Cr: 0.5-3%, Mo: 0.1-2%, S: 0.01
% Or less, P: 0.01% or less, O: 0.2% or less, and either or both of Ni: 0.2 to 2.5% and Cu: 0.5 to 2.5%, with the balance being inevitable impurities and Fe. A sintered body having high strength, high fatigue strength and high toughness, which is characterized by comprising
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12793992A JP3224417B2 (en) | 1992-02-14 | 1992-04-22 | Alloy steel powder and sintered body for sintered body having high strength, high fatigue strength and high toughness |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2763792 | 1992-02-14 | ||
| JP4-27637 | 1992-02-14 | ||
| JP12793992A JP3224417B2 (en) | 1992-02-14 | 1992-04-22 | Alloy steel powder and sintered body for sintered body having high strength, high fatigue strength and high toughness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05287452A true JPH05287452A (en) | 1993-11-02 |
| JP3224417B2 JP3224417B2 (en) | 2001-10-29 |
Family
ID=26365595
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12793992A Expired - Fee Related JP3224417B2 (en) | 1992-02-14 | 1992-04-22 | Alloy steel powder and sintered body for sintered body having high strength, high fatigue strength and high toughness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3224417B2 (en) |
Cited By (4)
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|---|---|---|---|---|
| WO2010035853A1 (en) | 2008-09-24 | 2010-04-01 | Ｊｆｅスチール株式会社 | Process for production of sintered compact by powder metallurgy |
| JP2013181198A (en) * | 2012-03-01 | 2013-09-12 | Jfe Steel Corp | Alloy steel powder for powder metallurgy |
| WO2014103999A1 (en) * | 2012-12-28 | 2014-07-03 | 株式会社神戸製鋼所 | Pre-alloyed steel powder for highly fatigue-resistant sintered body and carburized and quenched material |
| WO2017043091A1 (en) * | 2015-09-11 | 2017-03-16 | Ｊｆｅスチール株式会社 | Method for producing alloyed steel powder for sintered member starting material |
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|---|---|---|---|---|
| WO2017056511A1 (en) | 2015-09-30 | 2017-04-06 | Ｊｆｅスチール株式会社 | Production method for alloy steel powder for powder metallurgy |
| JP6112280B1 (en) | 2015-09-30 | 2017-04-12 | Ｊｆｅスチール株式会社 | Method for producing alloy steel powder for powder metallurgy |
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1992
- 1992-04-22 JP JP12793992A patent/JP3224417B2/en not_active Expired - Fee Related
Cited By (8)
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|---|---|---|---|---|
| WO2010035853A1 (en) | 2008-09-24 | 2010-04-01 | Ｊｆｅスチール株式会社 | Process for production of sintered compact by powder metallurgy |
| JP2013181198A (en) * | 2012-03-01 | 2013-09-12 | Jfe Steel Corp | Alloy steel powder for powder metallurgy |
| WO2014103999A1 (en) * | 2012-12-28 | 2014-07-03 | 株式会社神戸製鋼所 | Pre-alloyed steel powder for highly fatigue-resistant sintered body and carburized and quenched material |
| JP2014141743A (en) * | 2012-12-28 | 2014-08-07 | Kobe Steel Ltd | Pre-alloy type steel powder for high fatigue strength sintered compact sintered compact, and carburized quenching material |
| CN104884659A (en) * | 2012-12-28 | 2015-09-02 | 株式会社神户制钢所 | Pre-alloyed steel powder for highly fatigue-resistant sintered body and carburized and quenched material |
| WO2017043091A1 (en) * | 2015-09-11 | 2017-03-16 | Ｊｆｅスチール株式会社 | Method for producing alloyed steel powder for sintered member starting material |
| JPWO2017043091A1 (en) * | 2015-09-11 | 2017-09-07 | Ｊｆｅスチール株式会社 | Method for producing alloy steel powder for sintered member raw material |
| KR20180021150A (en) * | 2015-09-11 | 2018-02-28 | 제이에프이 스틸 가부시키가이샤 | Method for producing alloyed steel powder for sintered member starting material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3224417B2 (en) | 2001-10-29 |
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