JPH02122053A - Wear-resistant sintered alloy - Google Patents
Wear-resistant sintered alloyInfo
- Publication number
- JPH02122053A JPH02122053A JP27538788A JP27538788A JPH02122053A JP H02122053 A JPH02122053 A JP H02122053A JP 27538788 A JP27538788 A JP 27538788A JP 27538788 A JP27538788 A JP 27538788A JP H02122053 A JPH02122053 A JP H02122053A
- Authority
- JP
- Japan
- Prior art keywords
- sintered alloy
- wear
- solid lubricants
- resistance
- resistant sintered
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 13
- 239000000956 alloy Substances 0.000 title claims abstract description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 18
- 239000011707 mineral Substances 0.000 claims abstract description 18
- 239000000314 lubricant Substances 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000007787 solid Substances 0.000 claims abstract description 15
- 239000011159 matrix material Substances 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910052799 carbon Inorganic materials 0.000 claims abstract 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 3
- 229910001632 barium fluoride Inorganic materials 0.000 abstract description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract description 2
- 229910001634 calcium fluoride Inorganic materials 0.000 abstract description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- 229910052593 corundum Inorganic materials 0.000 abstract 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 2
- 229910052961 molybdenite Inorganic materials 0.000 abstract 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000000573 anti-seizure effect Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
木発１月は、鉄系焼結部品特にバルブシートのようガエ
ンジン部品等に好適な耐磨耗性焼結合金に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a wear-resistant sintered alloy suitable for iron-based sintered parts, particularly engine parts such as valve seats.
「従来の技術」
バルブシートは高温にさらされると共にパルプに高速で
たたかれるためにすぐれた耐熱性と耐磨耗性が要求され
る。``Prior Art'' Valve seats are exposed to high temperatures and are pounded into pulp at high speeds, so they are required to have excellent heat resistance and abrasion resistance.
従来、／くルプシートには耐熱鋼、特殊鋳鉄あるいは鉄
系焼結部品が使用されている。特に最近ではエンジンの
高出力化に伴いコバルト、タングステン等の合金元素を
添加した鉄系焼結合金が多用されつつある。Conventionally, heat-resistant steel, special cast iron, or iron-based sintered parts have been used for the /culp sheet. In particular, recently, as engines have become more powerful, iron-based sintered alloys containing alloying elements such as cobalt and tungsten have been increasingly used.
焼結合金の場合、耐磨耗性を付−１１する手段として、
鉄主体のマトリックス中に非金属鉱物を分散させるもの
がある。例えば
■特公昭６３−３８４０１つ・・・・玄武岩粉末を耐層
性改羨のため添加（用途：バルブシート、シリング−ラ
イナー）
■特開唱（Ｓ３−１１ａｏ４７ｆ″Ｉ・・・クルクを耐
磨性改善のため使用（用途：バルブシート、パルプガイ
ド）
その他に硬質粒子を分散させるものがある。In the case of sintered alloys, as a means of imparting wear resistance,
Some have non-metallic minerals dispersed in an iron-based matrix. For example, ■Special Publication No. 63-38401... Addition of basalt powder to improve layer resistance (Applications: valve seats, sill liners) ■Special Publications (S3-11ao47f''I...Curku to provide wear resistance) Used to improve properties (Applications: valve seats, pulp guides) There are also products that disperse hard particles.
○特公昭６Ｏ−３８４４Ｓ１号・・・Ｃｏ−Ｍｏ仝金又
はＣｏ −Ｍｏ−Ｃｒ合金の硬質粒子を耐層性改善のた
め？、Ｇ加している。○Special Publication No. 6O-3844S1...Is hard particles of Co-Mo metal or Co-Mo-Cr alloy used to improve layer resistance? , G is added.
［発明が解決しようとする課題］
しかし乍ら、上記
■の技術に於いては、玄武岩だけでは潤滑性に劣りバル
ブシートとして使用した場合エンジンの過酷な条件下で
は耐焼イτ１性に劣るという問題がある。[Problems to be Solved by the Invention] However, in the technology described in (1) above, there is a problem that basalt alone has poor lubricity, and when used as a valve seat, it has poor fire resistance τ1 under severe engine conditions. There is.
■の技術に於いては、タルクのＡ＃、０３含有量は一般
に＆％（１〜２％）以下であるため、バルブシートとし
て使用した場合エンジンの過酷力条件下では硬さが不十
分と々り耐層性が十分でないという問題がある。In the technology of ■, the A#, 03 content of talc is generally less than &% (1~2%), so when used as a valve seat, the hardness is insufficient under the severe engine stress conditions. There is a problem in that the layer resistance to scratching is insufficient.
■の技術に於いては、ＣＯ合金は高価であるため材料費
が高くなるという問題があった。In the technique (2), there was a problem in that the material cost was high because the CO alloy was expensive.
上記に鑑み、本発明はこのような問題点を解決するため
開発されたものである。In view of the above, the present invention was developed to solve these problems.
［課題を解決するための手段」
木発り１け、硬質粒子としての４歿能を、Δ１，０．を
１０＝Ｌ以上含む比較的安価な非企ＦＦＳ鉱物粒子に持
たせ、更にこれに固体潤滑材を添加することにより安価
で耐磨耗性、ｉｌ焼付性Ｋｆ＆れた材ト）を提供するも
のである。[Means for solving the problem] The 4 performance of hard particles is Δ1, 0. By making relatively inexpensive non-technical FFS mineral particles containing 10=L or more, and further adding a solid lubricant to this, an inexpensive material with wear resistance and anti-seizure properties (Kf) is provided. It is.
０５〜１５％、Ｃを０４〜３％、を含み残部が実質的に
鉄からなるマトリックス中に融点１２５０℃以上の固体
潤滑材およびＡＩ、０３を１０〜５０％を含む非金属鉱
物が一様に分散していることを特徴とする耐磨耗性焼結
合金である。A solid lubricant having a melting point of 1250°C or higher and a nonmetallic mineral containing 10 to 50% of AI, 03 in a matrix containing 05 to 15% of C, 04 to 3% of C, and the remainder substantially consisting of iron. This is a wear-resistant sintered alloy characterized by the fact that it is dispersed in
上記に於いて固体潤滑材はＣａＦ２ 、 ＢａＦ２ 、
Ｍｏ５ｔ 。In the above, the solid lubricant is CaF2, BaF2,
Mo5t.
ＷＳ、およびＢＮの群から選ばれるいずノ１か１種又は
２種以上から々ることか好適である。It is preferable to use one or more selected from the group consisting of WS and BN.
又、固体潤滑４詞が重量比で０．２〜５％、非金属鉱物
が重ｆｉｌ比で０５〜１０チ含１れていることが好適で
ある。Further, it is preferable that the solid lubricant is contained in an amount of 0.2 to 5% by weight, and the nonmetallic mineral is contained in a weight ratio of 0.5 to 10%.
「作用」
マトリックス：
Ｎｉ、Ｃｕ、Ｃｒ、Ｍｎ、ＣｏまたはＭｏはマトリック
スを強化し、強度及び耐熱性改善に役立つ。添加量が０
５チ未満では効果が小さく、又１５％を越えるとその効
果の増加は小さく経済的でないので範囲を０．５〜１５
％とした。"Function" Matrix: Ni, Cu, Cr, Mn, Co or Mo strengthens the matrix and helps improve strength and heat resistance. Added amount is 0
If it is less than 5%, the effect will be small, and if it exceeds 15%, the increase in the effect will be small and not economical, so the range should be set at 0.5 to 15%.
%.
Ｃけ鉄中に固溶しマトリックスを強化すると共に一部炭
化物を析出し耐層性、耐熱性の改善に寄与する。０．４
％未満の量ではその効果が小さく又３％を越えるとネッ
トワーク状の炭化物が増大し強度低下の原因となる。従
ってその範囲を０．４〜３チとした。It dissolves in carbon iron to strengthen the matrix and precipitates some carbides, contributing to the improvement of layer resistance and heat resistance. 0.4
If the amount is less than 3%, the effect will be small, and if it exceeds 3%, network-like carbides will increase, causing a decrease in strength. Therefore, the range was set to 0.4 to 3 inches.
固体酔１滑相：
固体ｆＪ滑材はマトリックス中挺分散していることによ
り優れた摺動特性を有し耐焼伺性の改善に効果を有する
と共に被削性の改善にも寄ノＪする。Solid phase lubricant 1 Smooth phase: The solid fJ lubricant has excellent sliding properties because it is dispersed in the matrix, and is effective in improving burn resistance and also contributes to improving machinability.
ｆμし、その融点が低いと成形体を焼結する過程で熱分
解し潤滑材の効果がなくなる恐れがある。従って不発り
ＩてＩｌｌいる潤滑材は融点がＬ２５Ｄ℃以上のものに
限定した。fμ, and if its melting point is low, it may thermally decompose during the process of sintering the molded body, and the lubricating effect may be lost. Therefore, lubricants that are unlikely to explode are limited to those with a melting point of L25D°C or higher.
１、！侵加１１１゛は０．２％未満ではその効果が小さ
く、又５％を越えると強度低下が大きくなるためその範
囲は０４２〜５％が望ましい。1,! When the penetration rate is less than 0.2%, the effect is small, and when it exceeds 5%, the strength decreases significantly, so it is desirable that the range is from 0.42% to 5%.
非金属鉱物：
非金属鉱物はマトリックス中に一様に分散することによ
り耐磨耗性、耐熱性の改善に寄与する。Nonmetallic minerals: Nonmetallic minerals contribute to improving wear resistance and heat resistance by uniformly dispersing them in the matrix.
この非金属鉱物はＡ／、０３を１０〜５０％含有してい
ることが１イ（ましい。Ａ／、Ｏ，が１０％より少いと
ｆａ、Ｉ層性改善の効果が十分でなく、５０チを越える
と鉱物粒子のイタ！さが大きくなり相手相を攻声する恐
れがある。It is preferable that this non-metallic mineral contains 10 to 50% of A/, 03. If A/, O, is less than 10%, the effect of improving the fa and I layer properties will not be sufficient; If it exceeds 50 degrees, the mineral particles will become too strong and may attack the opponent.
これらの要件を満たす非金属鉱物としては、クレー カ
オリン、ペンナイト、絹雲母または玄武岩等があり、本
発明ではこれらの粉末を用いる。Examples of nonmetallic minerals that meet these requirements include clay kaolin, pennite, sericite, and basalt, and powders of these are used in the present invention.
１忍加ｉ１１は０４５〜１０％の範囲が望ましい。０５
チ未満ではその効果が小さく又１０％を越えると強度の
低下が大きくなるからである。It is desirable that the range of 0.045% to 10% is 0.045% to 10%. 05
This is because the effect is small if it is less than 10%, and the strength decreases significantly if it exceeds 10%.
「実施例」 以下に本発明の実施例を述べる。"Example" Examples of the present invention will be described below.
１００メツシユの鉄粉及び合金鋼粉、−３２５メツシユ
のＮｉ粉末および黒鉛粉末と一２００メツシュのＣａＦ
！、 ＷＳ ２ 、 ＭｏＳ ！またはＢＮ粉末、更に
非金属鉱物粒子として一２００メツシュのカオリン粉末
、玄武岩・粉末を用いて、第１表に示す組成傾配合し、
８０、〜８６％の密度に圧粉成形後窒素又は真空雰囲気
中１１００〜１２５０℃の温度で１時同焼結した。100 mesh iron powder and alloy steel powder, -325 mesh Ni powder and graphite powder, and 1200 mesh CaF
! , WS2, MoS! Or, using BN powder and 1,200 mesh kaolin powder and basalt powder as non-metallic mineral particles, the composition gradient shown in Table 1 is blended,
After compacting to a density of 80% to 86%, they were simultaneously sintered at a temperature of 1100 to 1250° C. in a nitrogen or vacuum atmosphere.
第１表でＡ−Ｄは本発明材、Ｅ−Ｇは比較材として本発
明材から固体潤滑材および非金属鉱物のいずれか一方あ
るいは両方を抜いた材料である。In Table 1, A to D are the materials of the present invention, and E to G are comparative materials from which one or both of the solid lubricant and the nonmetallic mineral were removed from the materials of the present invention.
以上の試料をバルブシート形状に加工し、バルブシート
磨耗試験機を用いて磨耗試験を行った。The above sample was processed into a valve seat shape and subjected to an abrasion test using a valve seat abrasion tester.
試験機はモーターでカムを駆動しカム駆Ｕノによりパル
プが上下しバルブシートのたたき及び摺動磨耗を再現す
るとＪ％ Ｋ’ガスバーナーにてパルプとバルブシート
を加熱することによりエンジンを模したものである。耐
磨耗性、耐焼付性は試験後のパルプ沈み里で判断する。The test machine uses a motor to drive a cam, and the cam drive moves the pulp up and down, reproducing the beating and sliding wear of the valve seat. It is something. Abrasion resistance and seizure resistance are judged by pulp sinkage after the test.
試験は下記条件で行った。The test was conducted under the following conditions.
相手パルプ：ｌＮ７５１耐熱硬質合金、バルブシート温
度＝４５０℃
カム回転数：２５００ｒｐｍ
運転時間：２０Ｈｒ
試験結果を第２表忙示す。Compatible pulp: lN751 heat-resistant hard alloy, valve seat temperature = 450°C, cam rotation speed: 2500 rpm, operating time: 20 hours, the test results are shown in Table 2.
第 ２ 表
第２表より固体潤滑材と非金属鉱物を添加した不発りｊ
拐は優れた耐磨耗性、耐焼付性を示すことが明らかであ
る。Table 2 From Table 2, non-explosion j containing solid lubricant and non-metallic minerals
It is clear that the coating has excellent abrasion resistance and seizure resistance.
［発明の効果」
以上の様に不発Ｌ！ＡＫよれば耐磨耗性、耐焼付性＆Ｃ
優れた焼結合金が安価に得られる。[Effect of the invention] As described above, L! According to AK, wear resistance, seizure resistance &C
Excellent sintered alloy can be obtained at low cost.
代理人 弁理士 吉 竹 昌 司鳩Agent: Patent attorney: Yoshi Takemasa Shibato
Claims (3)
ｏの群から選ばれるいずれか１種又は２種以上を０．５
〜１５％、Ｃを０．４〜３％、を含み残部が実質的に鉄
からなるマトリックス中に融点１２５０℃以上の固体潤
滑材およびＡｌ＿２Ｏ＿３を１０〜５０％を含む非金属
鉱物が一様に分散していることを特徴とする耐磨耗性焼
結合金。(1) Ni, Cu, Cr, Mn, Co and M in weight ratio
0.5 of any one or two or more selected from the group o.
A solid lubricant with a melting point of 1250°C or higher and a nonmetallic mineral containing 10 to 50% Al_2O_3 are uniformly mixed into a matrix containing ~15% C, 0.4~3% C, and the remainder substantially iron. A wear-resistant sintered alloy characterized by being dispersed.
２、ＷＳ＿２およびＢＮの群から選ばれるいずれか１種
又は２種以上からなることを特徴とする特許請求の範囲
第（１）項記載の耐磨耗性焼結合金。(2) Solid lubricant is CaF_2, BaF_2, MoS_
The wear-resistant sintered alloy according to claim 1, characterized in that the wear-resistant sintered alloy is made of one or more selected from the group consisting of No. 2, WS_2, and BN.
が重量比で０．５〜１０％含まれていることを特徴とす
る特許請求の範囲第（１）項記載の耐磨耗性焼結合金。(3) The solid lubricant is contained in an amount of 0.2 to 5% by weight, and the nonmetallic mineral is contained in an amount of 0.5 to 10% by weight. Wear-resistant sintered alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27538788A JPH02122053A (en) | 1988-10-31 | 1988-10-31 | Wear-resistant sintered alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27538788A JPH02122053A (en) | 1988-10-31 | 1988-10-31 | Wear-resistant sintered alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02122053A true JPH02122053A (en) | 1990-05-09 |
Family
ID=17554784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27538788A Pending JPH02122053A (en) | 1988-10-31 | 1988-10-31 | Wear-resistant sintered alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02122053A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04191343A (en) * | 1990-07-06 | 1992-07-09 | Komatsu Ltd | Self-lubricating sliding material |
-
1988
- 1988-10-31 JP JP27538788A patent/JPH02122053A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04191343A (en) * | 1990-07-06 | 1992-07-09 | Komatsu Ltd | Self-lubricating sliding material |
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