JPH09209095A - Iron-base sintered alloy excellent in wear resistance - Google Patents
Iron-base sintered alloy excellent in wear resistanceInfo
- Publication number
- JPH09209095A JPH09209095A JP1401896A JP1401896A JPH09209095A JP H09209095 A JPH09209095 A JP H09209095A JP 1401896 A JP1401896 A JP 1401896A JP 1401896 A JP1401896 A JP 1401896A JP H09209095 A JPH09209095 A JP H09209095A
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- Japan
- Prior art keywords
- weight
- iron
- sintered alloy
- content
- wear resistance
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、耐摩耗性に優れ
た鉄基焼結合金およびその鉄基焼結合金からなるバルブ
シートに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron-based sintered alloy having excellent wear resistance and a valve seat made of the iron-based sintered alloy.
【０００２】[0002]
【従来の技術】一般に、ガソリンエンジン、デーゼルエ
ンジン、ＬＰＧエンジンなどの内燃機関の構成部品の１
つとして、バルブシートがあることは知られており、こ
のバルブシートは一般に耐摩耗性を有すると同時に強度
および靭性に優れた鉄基焼結合金で作られることも知ら
れている。これらバルブシートを作るための鉄基焼結合
金の１つとして、Ｃ：０．８〜１．５重量％、Ｃｒ：
０．５〜３．０重量％、Ｃｏ：２．０〜８．０重量％、
Ｎｉ：０．５〜３．０重量％、Ｍｏ：０．５〜３．０重
量％を含有し、残りがＦｅおよび不可避不純物からなる
組成を有する鉄基合金素地中に、Ｃｒ：２５．０〜４
５．０重量％、Ｃｏ：２０．０〜３０．０重量％、Ｗ：
２０．０〜３０．０重量％、Ｓｉ：０．５〜２．０重量
％、Ｃ：１．０〜３．０重量％、Ｎｂ：０．２〜２．０
重量％を含有し、残りがＦｅおよび不可避不純物からな
る組成の硬質粒子が１０〜２５重量％均一分散して含ま
れている鉄基焼結合金があることが知られている（特開
平３−１５８４４４号公報参照）。2. Description of the Related Art Generally, one of the components of an internal combustion engine such as a gasoline engine, a diesel engine, an LPG engine, etc.
As one, it is known that there is a valve seat, and it is also known that this valve seat is generally made of an iron-based sintered alloy that has wear resistance and at the same time has excellent strength and toughness. As one of the iron-based sintered alloys for making these valve seats, C: 0.8 to 1.5 wt%, Cr:
0.5-3.0% by weight, Co: 2.0-8.0% by weight,
In an iron-based alloy substrate containing Ni: 0.5 to 3.0% by weight, Mo: 0.5 to 3.0% by weight, and the balance of Fe and inevitable impurities, Cr: 25.0 ~ 4
5.0 wt%, Co: 20.0-30.0 wt%, W:
20.0 to 30.0 wt%, Si: 0.5 to 2.0 wt%, C: 1.0 to 3.0 wt%, Nb: 0.2 to 2.0
It is known that there is an iron-based sintered alloy containing 10% to 25% by weight of hard particles having a composition containing wt% and the balance being Fe and unavoidable impurities (refer to Japanese Unexamined Patent Publication No. Hei 3 (1999) -311). 158444).
【０００３】[0003]
【発明が解決しようとする課題】しかし、近年、自動車
エンジンの高出力化がが計られ、現在のバルブシート材
ではそのような過酷な使用環境では硬質粒子の摩耗およ
び脱落などが問題になっている。そこで耐摩耗性を上げ
るために硬質粒子のＣｒ量を多くすることにより、硬質
粒子中にポアができ、かえって硬質粒子自体の割れが起
きたり脱落などが起りやすくなってしまうなどの課題が
あった。However, in recent years, the output of automobile engines has been increased, and in the current valve seat materials, the wear and drop-off of hard particles have become a problem in such a severe operating environment. There is. Therefore, by increasing the amount of Cr in the hard particles in order to increase wear resistance, there is a problem that pores are created in the hard particles, and that the hard particles themselves tend to crack or fall off. .
【０００４】[0004]
【課題を解決するための手段】そこで、本発明者らは、
上述のような観点から、硬質粒子自体の割れが起きたり
脱落などが起ることのない鉄基焼結合金を得て、耐摩耗
性に優れたバルブシートを得るべく研究を行った結果、
焼結体素地中に、Ｃｒ：１０．０〜６０．０重量％、Ｃ
ｏ：２．０〜３０．０重量％、Ｍｏ：５．０〜３０．０
重量％、Ｎｉ：２．０〜２０．０重量％、Ｗ：５．０〜
１５．０重量％、Ｓｉ：０．５〜２．０重量％、Ｃ：
１．０〜５．０重量％を含有し、残りがＦｅおよび不可
避不純物からなる組成を有しかつ平均粒径：１０〜１５
０μｍの硬質粒子が５．０〜２０．０体積％均一分散し
て含まれている鉄基焼結合金であって、この鉄基焼結合
金は、全体の重量比がＣ：０．５〜２．０重量％、Ｃ
ｒ：１．０〜６．０重量％、Ｃｏ：１．０〜１５．０重
量％、Ｎｉ：０．３〜１５．０重量％、Ｍｏ：０．３〜
６．０重量％、Ｓｉ：０．０３〜０．４重量％、Ｗ：
０．３〜３．０重量％を含有し、残りがＦｅおよび不可
避不純物からなる組成を有する鉄基焼結合金は、従来よ
りも一層耐摩耗性に優れ、この鉄基焼結合金からなるバ
ルブシートは、従来よりも一層優れた特性を有するとい
う知見を得たのである。Means for Solving the Problems Accordingly, the present inventors have:
From the above viewpoint, the iron-based sintered alloy that does not cause the hard particles themselves to crack or fall off, and as a result of research to obtain a valve seat with excellent wear resistance,
Cr: 10.0 to 60.0% by weight, C in the sintered body
o: 2.0 to 30.0% by weight, Mo: 5.0 to 30.0
% By weight, Ni: 2.0-20.0% by weight, W: 5.0-
15.0% by weight, Si: 0.5 to 2.0% by weight, C:
1.0 to 5.0% by weight, with the balance being Fe and unavoidable impurities, and having an average particle size of 10 to 15
An iron-based sintered alloy in which 0 μm hard particles are uniformly dispersed and contained in an amount of 5.0 to 20.0% by volume, and the total weight ratio of the iron-based sintered alloy is C: 0.5 to 2.0% by weight, C
r: 1.0 to 6.0 wt%, Co: 1.0 to 15.0 wt%, Ni: 0.3 to 15.0 wt%, Mo: 0.3 to
6.0% by weight, Si: 0.03 to 0.4% by weight, W:
An iron-based sintered alloy having a composition containing 0.3 to 3.0% by weight and the balance of Fe and unavoidable impurities is more excellent in wear resistance than before, and a valve made of this iron-based sintered alloy. We have found that the sheet has even better properties than before.
【０００５】この発明は、かかる知見にもとづいてなさ
れたものであって、（１）焼結体素地中に、Ｃｒ：１
０．０〜６０．０重量％、Ｃｏ：２．０〜３０．０重量
％、Ｍｏ：５．０〜３０．０重量％、Ｎｉ：２．０〜２
０．０重量％、Ｗ：５．０〜１５．０重量％、Ｓｉ：
０．５〜２．０重量％、Ｃ：１．０〜５．０重量％を含
有し、残りがＦｅおよび不可避不純物からなる組成を有
しかつ平均粒径：１０〜１５０μｍの硬質粒子が５．０
〜２０．０体積％均一分散して含まれている鉄基焼結合
金であって、この鉄基焼結合金は、全体の重量比がＣ：
０．５〜２．０重量％、Ｃｒ：１．０〜６．０重量％、
Ｃｏ：１．０〜１５．０重量％、Ｎｉ：０．３〜１５．
０重量％、Ｍｏ：０．３〜６．０重量％、Ｓｉ：０．０
３〜０．４重量％、Ｗ：０．３〜３．０重量％を含有
し、残りがＦｅおよび不可避不純物からなる組成を有す
る鉄基焼結合金、（２）前記（１）記載の鉄基焼結合金
からなるバルブシート、に特徴を有するものである。The present invention has been made on the basis of such knowledge, and (1) Cr: 1 is contained in the sintered body.
0.0-60.0 wt%, Co: 2.0-30.0 wt%, Mo: 5.0-30.0 wt%, Ni: 2.0-2
0.0% by weight, W: 5.0 to 15.0% by weight, Si:
Hard particles containing 0.5 to 2.0% by weight, C: 1.0 to 5.0% by weight, and the balance of Fe and unavoidable impurities and having an average particle size of 10 to 150 μm were 5 .0
˜20.0% by volume of the iron-based sintered alloy uniformly dispersed and contained, and the total weight ratio of the iron-based sintered alloy is C:
0.5-2.0 wt%, Cr: 1.0-6.0 wt%,
Co: 1.0-15.0% by weight, Ni: 0.3-15.
0% by weight, Mo: 0.3 to 6.0% by weight, Si: 0.0
An iron-based sintered alloy containing 3 to 0.4% by weight, W: 0.3 to 3.0% by weight, and the balance of Fe and inevitable impurities, (2) The iron according to (1) above. It is characterized by a valve seat made of a base sintered alloy.
【０００６】つぎに、この発明のバルブシートを構成す
る鉄基焼結合金の成分組成および組織を上記のごとく限
定した理由について説明する。Next, the reason why the component composition and structure of the iron-based sintered alloy constituting the valve seat of the present invention are limited as described above will be explained.
【０００７】（Ａ）硬質粒子 Ｃ：硬質粒子におけるＣには、Ｃｒ、ＭｏおよびＷと共
にカーバイドを作り、硬さを強化する作用があるが、１
重量％未満ではその効果が十分得られず、一方、５．０
重量％を越えて含有すると靭性を低下させるので好まし
くない。したがって、硬質粒子におけるＣの含有量は、
１．０〜５．０重量％に定めた。Ｃの含有量の一層好ま
しい範囲は、１．５〜３．５重量％である。(A) Hard particles C: C in the hard particles has a function of strengthening hardness by forming carbide with Cr, Mo and W, but 1
If it is less than wt%, the effect cannot be sufficiently obtained, while 5.0
If it is contained in excess of weight%, the toughness is lowered, which is not preferable. Therefore, the content of C in the hard particles is
It was set to 1.0 to 5.0% by weight. A more preferable range of the C content is 1.5 to 3.5% by weight.
【０００８】Ｓｉ：Ｓｉは、炭化物を形成して硬さを強
化する作用があるが、その含有量が０．５重量％未満で
は効果が十分でなく、一方、２．０重量％を越えて含有
すると靭性が低下するので好ましくない。したがって、
硬質粒子におけるＳｉの含有量は、０．５〜２．０重量
％に定めた。Ｓｉの含有量の一層好ましい範囲は、０．
８〜１．５重量％である。Si: Si has the effect of forming carbides and strengthening the hardness, but if its content is less than 0.5% by weight, the effect is not sufficient, while if it exceeds 2.0% by weight. If it is contained, the toughness decreases, which is not preferable. Therefore,
The content of Si in the hard particles was set to 0.5 to 2.0% by weight. A more preferable range of the Si content is 0.
8 to 1.5% by weight.
【０００９】Ｍｏ：Ｍｏは、硬質粒子の素地に固溶して
強化すると共に、一部はＣと結合して炭化物を作り、硬
さを強化する作用があるが、その含有量が５．０重量％
未満では効果が十分でなく、一方、３０．０重量％を越
えて含有しても硬さの一層の強化わ得られない。したが
って、硬質粒子におけるＭｏの含有量は、５．０〜３
０．０重量％に定めた。Ｍｏの含有量の一層好ましい範
囲は、１０〜２０重量％である。Mo: Mo acts as a solid solution in the matrix of hard particles to strengthen it, and partly combines with C to form a carbide to strengthen the hardness, but its content is 5.0. weight%
If it is less than the above range, the effect is not sufficient, while if it exceeds 30.0% by weight, the hardness cannot be further enhanced. Therefore, the content of Mo in the hard particles is 5.0 to 3
It was set to 0.0% by weight. A more preferable range of the Mo content is 10 to 20% by weight.
【００１０】Ｎｉ：Ｎｉは、素地に固溶して合金の強度
および靭性を向上させる効果があるが、その含有量が
２．０重量％未満では効果が十分でなく、一方、１５．
０重量％を越えて含有させると硬さが低下するので好ま
しくない。したがって、硬質粒子におけるＮｉの含有量
は、２．０〜１５．０重量％に定めた。Ｎｉの含有量の
一層好ましい範囲は、５〜１５重量％である。Ni: Ni has the effect of forming a solid solution in the matrix to improve the strength and toughness of the alloy, but if its content is less than 2.0% by weight, the effect is not sufficient.
If the content is more than 0% by weight, the hardness decreases, which is not preferable. Therefore, the content of Ni in the hard particles is set to 2.0 to 15.0% by weight. A more preferable range of the Ni content is 5 to 15% by weight.
【００１１】Ｃｒ：Ｃｒは、素地に固溶して合金の強度
および耐摩耗性を向上させると共にＣと固溶して炭化物
を作り硬さを向上させる効果があるが、その含有量が１
０．０重量％未満では効果が十分でなく、一方、６０．
０重量％を越えて含有させると素地との結合性が低下す
るので好ましくない。したがって、硬質粒子におけるＣ
ｒの含有量は、１０．０〜６０．０重量％に定めた。Ｃ
ｒの含有量の一層好ましい範囲は、２０〜５０重量％で
ある。Cr: Cr has the effect of forming a solid solution with the base material to improve the strength and wear resistance of the alloy, and forming a solid solution with C to form a carbide to improve the hardness, but its content is 1
If it is less than 0.0% by weight, the effect is not sufficient, while 60.
If it is contained in an amount of more than 0% by weight, the bondability with the base material is deteriorated, which is not preferable. Therefore, C in the hard particles
The content of r was set to 10.0 to 60.0% by weight. C
A more preferable range of the content of r is 20 to 50% by weight.
【００１２】Ｗ：ＷはＣと結合して炭化物を作り、硬さ
を強化する作用があるが、その含有量が５．０重量％未
満では効果が十分でなく、一方、１５．０重量％を越え
て含有しても硬さの一層の強化は得られない。したがっ
て、硬質粒子におけるＷの含有量は、５．０〜１５．０
重量％に定めた。Ｗの含有量の一層好ましい範囲は、８
〜１２重量％である。W: W combines with C to form a carbide and strengthens the hardness, but if the content is less than 5.0% by weight, the effect is not sufficient, while 15.0% by weight. If the content is exceeded, further enhancement of hardness cannot be obtained. Therefore, the content of W in the hard particles is 5.0 to 15.0.
Weight% is set. A more preferable range of the W content is 8
１２12% by weight.
【００１３】Ｃｏ：Ｃｏは、硬質粒子の素地に固溶して
強化する作用があるが、その含有量が２．０重量％未満
では効果が十分でなく、一方、３０．０重量％を越えて
含有しても十分な硬さが得られない。したがって、硬質
粒子におけるＣｏの含有量は、２．０〜３０．０重量％
に定めた。Ｃｏの含有量の一層好ましい範囲は、１０〜
２５重量％である。Co: Co acts as a solid solution in the matrix of hard particles to strengthen it, but if its content is less than 2.0% by weight, the effect is not sufficient, while if it exceeds 30.0% by weight. Sufficient hardness cannot be obtained even if it is contained. Therefore, the content of Co in the hard particles is 2.0 to 30.0% by weight.
Determined. A more preferable range of the Co content is 10-
25% by weight.
【００１４】（Ｂ）全体組成 Ｃ：全体組成におけるＣには、マルテンサイトを作り、
硬さを強化する作用があるが、０．５重量％未満ではそ
の効果が十分得られず、一方、２．０重量％を越えて含
有すると粗大なセメンタイトが析出し、靭性を低下させ
るので好ましくない。したがって、全体組成におけるＣ
の含有量は、０．５〜２．０重量％に定めた。Ｃの含有
量の一層好ましい範囲は、０．７〜１．２重量％であ
る。(B) Overall composition C: Martensite is formed in C in the overall composition,
Although it has an effect of strengthening hardness, if it is less than 0.5% by weight, its effect is not sufficiently obtained, while if it exceeds 2.0% by weight, coarse cementite is precipitated and the toughness is lowered, which is preferable. Absent. Therefore, C in the overall composition
The content of was determined to be 0.5 to 2.0% by weight. A more preferable range of the C content is 0.7 to 1.2% by weight.
【００１５】Ｍｏ：Ｍｏは、全体組成の素地に固溶する
と共に、一部はＣと結合して炭化物を作り、耐摩耗性を
向上させる作用があるが、その含有量が０．３重量％未
満では効果が十分でなく、一方、６．０重量％を越えて
含有しても一層の耐摩耗性の強化が得られない。したが
って、全体組成におけるＭｏの含有量は、０．３〜６．
０重量％に定めた。Ｍｏの含有量の一層好ましい範囲
は、１．０〜４．０重量％である。Mo: Mo forms a solid solution in the base material of the entire composition and partly combines with C to form a carbide, which improves wear resistance, but its content is 0.3% by weight. If it is less than the above range, the effect is not sufficient. On the other hand, if it exceeds 6.0% by weight, the wear resistance cannot be further enhanced. Therefore, the Mo content in the overall composition is 0.3 to 6.
It was set to 0% by weight. A more preferable range of the Mo content is 1.0 to 4.0% by weight.
【００１６】Ｎｉ：Ｎｉは、素地に固溶して硬質粒子と
の結合性を高める効果があるが、その含有量が０．３重
量％未満では効果が十分でなく、一方、１５．０重量％
を越えて含有させると軟化するので好ましくない。した
がって、全体組成におけるＮｉの含有量は、０．３〜１
５．０重量％に定めた。Ｎｉの含有量の一層好ましい範
囲は、５〜１０重量％である。Ni: Ni has the effect of forming a solid solution in the matrix to enhance the bondability with hard particles, but if the content is less than 0.3% by weight, the effect is not sufficient, while 15.0% by weight. %
If it is contained in an amount exceeding the above range, it is softened, which is not preferable. Therefore, the content of Ni in the overall composition is 0.3 to 1
It was set to 5.0% by weight. A more preferable range of the Ni content is 5 to 10% by weight.
【００１７】Ｃｏ：Ｃｏは、全体組成の素地に固溶して
高温強度を強化する作用があるが、その含有量が１．０
重量％未満では効果が十分でなく、一方、１５．０重量
％を越えて含有しても十分な硬さが得られない。したが
って、全体組成におけるＣｏの含有量は、１．０〜１
５．０重量％に定めた。Ｃｏの含有量の一層好ましい範
囲は、５〜１２重量％である。Co: Co acts as a solid solution in the base material of the overall composition to enhance high temperature strength, but its content is 1.0.
If it is less than 1% by weight, the effect is not sufficient, while if it exceeds 15.0% by weight, sufficient hardness cannot be obtained. Therefore, the Co content in the overall composition is 1.0 to 1
It was set to 5.0% by weight. A more preferable range of the Co content is 5 to 12% by weight.
【００１８】[0018]
【発明の実施の形態】原料粉末として、いずれも１〜１
００μｍの範囲内の平均粒径を有するＦｅ粉末、Ｎｉ粉
末、Ｃｏ粉末、Ｍｏ粉末、Ｎｂ粉末およびＣ粉末をそれ
ぞれ用意し、さらに表１に示される成分組成および平均
粒径を有する硬質粉末ａ〜ｋを用意した。BEST MODE FOR CARRYING OUT THE INVENTION As a raw material powder, all are 1 to 1.
Fe powder, Ni powder, Co powder, Mo powder, Nb powder, and C powder having an average particle diameter within the range of 00 μm were prepared, respectively, and further, hard powder a having the component composition and average particle diameter shown in Table 1 prepared k.
【００１９】[0019]
【表１】 [Table 1]
【００２０】これら原料粉末に表１に示される成分組成
の硬質粉末ａ〜ｋを表２に示される配合組成になるよう
に配合し、十分に混合し、得られた混合粉末を６ｔｏｎ
／ｃｍ2 の圧力で外径：３５ｍｍ×内径：２５ｍｍ×高
さ：１０ｍｍの寸法を有するリングに成形し、これをＮ
2 ＋５％Ｈ2 雰囲気中、温度：１１６０℃にて６０分間
焼結し、所定形状に加工することにより表３に示される
素地中に硬質粒子が分散した全体組成を有する本発明バ
ルブシート１〜１０および従来バルブシートを作製し
た。Hard powders a to k having the component composition shown in Table 1 were blended with these raw material powders so as to have the blending composition shown in Table 2, and they were sufficiently mixed, and the resulting mixed powder was 6 ton.
With a pressure of / cm 2 , a ring having dimensions of outer diameter: 35 mm × inner diameter: 25 mm × height: 10 mm is formed.
A valve sheet 1 of the present invention having an overall composition in which hard particles are dispersed in the matrix shown in Table 3 by sintering for 60 minutes at a temperature of 1160 ° C. in a 2 + 5% H 2 atmosphere and processing into a predetermined shape. 10 and conventional valve seats were produced.
【００２１】[0021]
【表２】 [Table 2]
【００２２】[0022]
【表３】 [Table 3]
【００２３】表３に示される本発明バルブシート１〜１
０および従来バルブシートの耐摩耗性を評価する目的
で、本発明バルブシート１〜１０および従来バルブシー
トを電気炉を有する摩耗試験機の支持台上にセットし、
ガソリン燃焼雰囲気中で３５０℃に加熱し、ＪＩＳ Ｓ
ＵＨ−１１からなる材質のバルブを前記支持台上にセッ
トした本発明バルブシート１〜１０および従来バルブシ
ートに着座回数：１５００回／ｍｉｎで着座させること
により摩耗試験を行い、各バルブシートの最大摩耗深さ
をおよび相手部材のバルブの最大摩耗深さを測定し、こ
れらの測定結果を表４に示した。The valve seats 1 to 1 of the present invention shown in Table 3
0 and the conventional valve seats for the purpose of evaluating the wear resistance of the conventional valve seats, the valve seats 1 to 10 of the present invention and the conventional valve seats were set on a support base of an abrasion tester having an electric furnace
Heated to 350 ℃ in gasoline combustion atmosphere, JIS S
A wear test was performed by seating a valve made of UH-11 on the above-mentioned support base on the present invention valve seats 1 to 10 and conventional valve seats at a seating frequency of 1500 times / min. The wear depth and the maximum wear depth of the valve of the mating member were measured, and the measurement results are shown in Table 4.
【００２４】[0024]
【表４】 [Table 4]
【００２５】[0025]
【発明の効果】表３〜表４に示した結果から、本発明バ
ルブシート１〜１０は従来バルブシートに比べて、最大
摩耗深さが小さく、さらに相手部材であるバルブの最大
摩耗深さも小さいところから、本発明バルブシート１〜
１０は従来バルブシートに比べて一段と優れた耐摩耗性
を有し、さらに相手攻撃性も少ないことが分かる。From the results shown in Tables 3 to 4, the valve seats 1 to 10 of the present invention have a smaller maximum wear depth than the conventional valve seat, and the maximum wear depth of the mating valve is also smaller. Therefore, the present invention valve seat 1
It can be seen that No. 10 has much more excellent wear resistance than the conventional valve seat, and also has less opponent attack.
【００２６】上述のように、この発明の鉄基焼結合金か
らなるバルブシートは、耐摩耗性が優れているので、ガ
ソリンエンジン、デーゼルエンジン、ＬＰＧエンジンな
どの高出力内燃機関のバルブシートとして十分に対応す
ることができ、実用に際しては、優れた性能を長期にわ
たって発揮することにより工業上優れた効果をもたらす
ものである。As described above, since the valve seat made of the iron-based sintered alloy of the present invention has excellent wear resistance, it is sufficient as a valve seat for high-power internal combustion engines such as gasoline engines, diesel engines and LPG engines. In practical use, it exerts excellent performance over a long period of time to bring about an excellent industrial effect.
Claims (2)
０重量％、Ｃｏ：２．０〜３０．０重量％、Ｍｏ：５．
０〜３０．０重量％、Ｎｉ：２．０〜２０．０重量％、
Ｗ：５．０〜１５．０重量％、Ｓｉ：０．５〜２．０重
量％、Ｃ：１．０〜５．０重量％を含有し、残りがＦｅ
および不可避不純物からなる組成を有しかつ平均粒径：
１０〜１５０μｍの硬質粒子が５．０〜２０．０体積％
均一分散して含まれている鉄基焼結合金であって、この
鉄基焼結合金は、全体の重量比がＣ：０．５〜２．０重
量％、Ｃｒ：１．０〜６．０重量％、Ｃｏ：１．０〜１
５．０重量％、Ｎｉ：０．３〜１５．０重量％、Ｍｏ：
０．３〜６．０重量％、Ｓｉ：０．０３〜０．４重量
％、Ｗ：０．３〜３．０重量％を含有し、残りがＦｅお
よび不可避不純物からなる組成を有することを特徴とす
る鉄基焼結合金。1. Cr: 10.0 to 60.% in a sintered body.
0% by weight, Co: 2.0 to 30.0% by weight, Mo: 5.
0-30.0% by weight, Ni: 2.0-20.0% by weight,
W: 5.0 to 15.0% by weight, Si: 0.5 to 2.0% by weight, C: 1.0 to 5.0% by weight, the balance Fe
And an average particle size having a composition consisting of unavoidable impurities:
Hard particles of 10 to 150 μm 5.0 to 20.0% by volume
An iron-based sintered alloy that is uniformly dispersed and contained, and the total weight ratio of the iron-based sintered alloy is C: 0.5 to 2.0% by weight and Cr: 1.0 to 6. 0% by weight, Co: 1.0 to 1
5.0% by weight, Ni: 0.3 to 15.0% by weight, Mo:
0.3 to 6.0% by weight, Si: 0.03 to 0.4% by weight, W: 0.3 to 3.0% by weight, with the balance being Fe and inevitable impurities. Characteristic iron-based sintered alloy.
を特徴とするバルブシート。2. A valve seat comprising the iron-based sintered alloy according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1401896A JPH09209095A (en) | 1996-01-30 | 1996-01-30 | Iron-base sintered alloy excellent in wear resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1401896A JPH09209095A (en) | 1996-01-30 | 1996-01-30 | Iron-base sintered alloy excellent in wear resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09209095A true JPH09209095A (en) | 1997-08-12 |
Family
ID=11849464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1401896A Withdrawn JPH09209095A (en) | 1996-01-30 | 1996-01-30 | Iron-base sintered alloy excellent in wear resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09209095A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1172452A2 (en) * | 2000-06-20 | 2002-01-16 | Winsert, Inc. | Wear-resistant iron base alloy |
| US6436338B1 (en) | 1999-06-04 | 2002-08-20 | L. E. Jones Company | Iron-based alloy for internal combustion engine valve seat inserts |
| US6702905B1 (en) | 2003-01-29 | 2004-03-09 | L. E. Jones Company | Corrosion and wear resistant alloy |
| JP2008501073A (en) * | 2004-05-28 | 2008-01-17 | プラックセアー エス．ティ．テクノロジー、 インコーポレイテッド | Abrasion resistant alloy powder and coating |
| US8613886B2 (en) | 2006-06-29 | 2013-12-24 | L. E. Jones Company | Nickel-rich wear resistant alloy and method of making and use thereof |
| KR101399003B1 (en) * | 2006-08-11 | 2014-05-27 | 페더랄-모굴 신터드 프로덕츠 리미티드 | Improved powder metallurgy composition |
| US8940110B2 (en) | 2012-09-15 | 2015-01-27 | L. E. Jones Company | Corrosion and wear resistant iron based alloy useful for internal combustion engine valve seat inserts and method of making and use thereof |
| EP4036259A1 (en) * | 2021-01-27 | 2022-08-03 | National Tsing Hua University | High hardness and temperature-resistant alloy and article comprising the same |
-
1996
- 1996-01-30 JP JP1401896A patent/JPH09209095A/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6436338B1 (en) | 1999-06-04 | 2002-08-20 | L. E. Jones Company | Iron-based alloy for internal combustion engine valve seat inserts |
| EP1172452A2 (en) * | 2000-06-20 | 2002-01-16 | Winsert, Inc. | Wear-resistant iron base alloy |
| EP1172452A3 (en) * | 2000-06-20 | 2002-03-06 | Winsert, Inc. | Wear-resistant iron base alloy |
| US6485678B1 (en) | 2000-06-20 | 2002-11-26 | Winsert Technologies, Inc. | Wear-resistant iron base alloys |
| US6702905B1 (en) | 2003-01-29 | 2004-03-09 | L. E. Jones Company | Corrosion and wear resistant alloy |
| JP2008501073A (en) * | 2004-05-28 | 2008-01-17 | プラックセアー エス．ティ．テクノロジー、 インコーポレイテッド | Abrasion resistant alloy powder and coating |
| US8613886B2 (en) | 2006-06-29 | 2013-12-24 | L. E. Jones Company | Nickel-rich wear resistant alloy and method of making and use thereof |
| KR101399003B1 (en) * | 2006-08-11 | 2014-05-27 | 페더랄-모굴 신터드 프로덕츠 리미티드 | Improved powder metallurgy composition |
| US8940110B2 (en) | 2012-09-15 | 2015-01-27 | L. E. Jones Company | Corrosion and wear resistant iron based alloy useful for internal combustion engine valve seat inserts and method of making and use thereof |
| EP4036259A1 (en) * | 2021-01-27 | 2022-08-03 | National Tsing Hua University | High hardness and temperature-resistant alloy and article comprising the same |
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