JPH0124856B2 - - Google Patents
Info
- Publication number
- JPH0124856B2 JPH0124856B2 JP54081342A JP8134279A JPH0124856B2 JP H0124856 B2 JPH0124856 B2 JP H0124856B2 JP 54081342 A JP54081342 A JP 54081342A JP 8134279 A JP8134279 A JP 8134279A JP H0124856 B2 JPH0124856 B2 JP H0124856B2
- Authority
- JP
- Japan
- Prior art keywords
- sintered alloy
- base
- wear resistance
- wear
- present
- 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
Links
- 239000000956 alloy Substances 0.000 claims description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 150000001247 metal acetylides Chemical class 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910000734 martensite Inorganic materials 0.000 claims description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910017112 Fe—C Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 description 19
- 239000011651 chromium Substances 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】
本発明はエアコン、クーラ等の回転式流体ポン
プ用摺動部材に最適な耐摩耗性鉄系焼結合金材に
関し、特に高面圧、耐摩耗性の要求されるベーン
に適合するものであり、また他の摺動部材にも適
用できる耐摩耗性鉄系焼結合金材（以下、単に焼
結合金と称す）に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wear-resistant iron-based sintered alloy material suitable for sliding members for rotary fluid pumps such as air conditioners and coolers, and particularly for vanes that require high surface pressure and wear resistance. The present invention relates to a wear-resistant iron-based sintered alloy material (hereinafter simply referred to as sintered alloy) that is compatible with the above and can also be applied to other sliding members.
一般にこの種の高面圧、耐摩耗性の要求される
焼結合金は、パーライトやマルテンサイト基地中
に炭化物や合金粒子を分散させたものが多く使用
に供され、ある程度の実績をあげている。 In general, this type of sintered alloy that requires high surface pressure and wear resistance is often made of pearlite or martensite base with carbide or alloy particles dispersed in it, and has achieved some success. .
この基地中に分散させる炭化物や合金粒子の元
素はCo、Ｗ等が多量に使用されるのであるが、
近時これらの元素は入手困難な事情が発生し、非
常に高価な元素となり、多量に使用することは難
かしいと言う問題がある。 Co, W, etc. are used in large quantities as elements for the carbide and alloy particles dispersed in this base.
Recently, these elements have become difficult to obtain, are very expensive, and are difficult to use in large quantities.
本発明はこのような状況に鑑み、上述の如く元
素を用いず、しかも少い合金元素を有効に用い
て、優れた耐摩耗性を発揮する省資源、低価格の
焼結合金材を提供しようとするものである。 In view of this situation, the present invention aims to provide a resource-saving, low-cost sintered alloy material that exhibits excellent wear resistance without using any elements as described above, and by effectively using a small amount of alloying elements. That is.
即ち、重量比でC1.0〜3.0％、Cr：7.0〜13.0％、
Ni：1.0〜1.5％、Mo：1.0〜1.5％、残部Feよりな
り、かつマルテンサイトの基地中にFe−Ｃ−Cr
の複合炭化物が均一に分散してなる組織を有する
ことを特徴とする耐摩耗性鉄系焼結合金材であ
る。 That is, C1.0~3.0%, Cr:7.0~13.0%, weight ratio
Ni: 1.0~1.5%, Mo: 1.0~1.5%, balance Fe, and Fe-C-Cr in the martensite base.
This is a wear-resistant iron-based sintered alloy material characterized by having a structure in which composite carbides are uniformly dispersed.
以下、本発明焼結合金の成分限定理由について
述べる。 The reasons for limiting the components of the sintered alloy of the present invention will be described below.
先ず、炭素は基地の強化及び後述するクロムと
作用させて炭化物を析出させる目的で添加するも
のであるが、2.0％未満では析出炭化物（Fe−Ｃ
−Cr）の量が少く目的とする耐摩耗性が得られ
ず、また基地に固溶する炭素量も不足するため充
分な基地強化が望めない。 First, carbon is added for the purpose of strengthening the base and precipitating carbides by interacting with chromium (described later), but if it is less than 2.0%, it will cause precipitated carbides (Fe-C
-Cr) is too small to achieve the desired wear resistance, and the amount of carbon dissolved in the matrix is also insufficient, so sufficient base reinforcement cannot be expected.
一方、3.0％超では析出炭化物量が多くなりす
ぎ、そのため基地の脆化を生ずるために炭素は重
量％で2.0〜3.0％の範囲にする必要がある。 On the other hand, if it exceeds 3.0%, the amount of precipitated carbides becomes too large, resulting in embrittlement of the matrix, so carbon needs to be in the range of 2.0 to 3.0% by weight.
クロムは前述した炭素とともに炭化物を析出さ
せる目的で添加するものであるが、7.0％未満で
は析出炭化物が不足し、目的とする耐摩耗性が得
られない。一方13.0％超となると必要以上に炭化
物が析出し、そのため、基地の脆化及び相手材料
を極度に摩耗させるため、このクロムは重量％で
7.0〜13.0％の範囲内にする必要がある。 Chromium is added for the purpose of precipitating carbides together with the aforementioned carbon, but if it is less than 7.0%, the precipitated carbides will be insufficient and the desired wear resistance will not be obtained. On the other hand, if it exceeds 13.0%, carbides will precipitate more than necessary, resulting in embrittlement of the base and extreme wear of the mating material.
Must be within the range of 7.0 to 13.0%.
ニツケルは基地強化の目的で添加するものであ
るが1.0％未満では目的とする充分な基地強化が
得られない。 Nickel is added for the purpose of strengthening the base, but if it is less than 1.0%, the intended base strength cannot be sufficiently strengthened.
また、1.5％超となつてもそれ程基地強化の効
果は向上せず組織変態を生じ、耐摩耗性を悪くす
るためニツケルは重量比で1.0〜1.5％の範囲内に
する必要がある。 Further, even if it exceeds 1.5%, the effect of reinforcing the base will not improve much and structural transformation will occur, resulting in poor wear resistance, so the weight ratio of nickel must be within the range of 1.0 to 1.5%.
モリブデンは基地の焼入れ性を向上させる目的
と基地強化の目的で添加するものであるが、1.0
％未満では上記目的を達成することができない。 Molybdenum is added for the purpose of improving the hardenability of the base and strengthening the base.
If the amount is less than %, the above objective cannot be achieved.
また1.5％超となつてもそれ程上記目的の効果
が向上しないため、モリブデンは重量％で1.0〜
1.5％の範囲内にする必要がある。 In addition, even if it exceeds 1.5%, the above-mentioned effect will not improve significantly, so molybdenum is
Must be within 1.5%.
上記の如く成分の焼結合金を作成した場合、基
地はパーライトとなり高面圧下における耐摩耗性
に問題がある。そのため、本発明にあつては熱処
理によつて基地をマルテンサイトにし、充分なる
耐摩耗性を付与するものである。 When a sintered alloy with the above-mentioned components is prepared, the matrix becomes pearlite, which poses a problem in wear resistance under high surface pressure. Therefore, in the present invention, the base is made into martensite by heat treatment to impart sufficient wear resistance.
このように、本発明焼結合金は耐摩耗性の極め
て優れたマルテンサイト基地中に微細なFe−Ｃ
−Crの複合炭化物が均一に分散した焼結合金で
あるため、極めて優れた耐摩耗性を発揮すると同
時に被削性にも優れた焼結合金である。 In this way, the sintered alloy of the present invention has fine Fe-C in the martensite base which has extremely excellent wear resistance.
- Since it is a sintered alloy in which composite carbides of Cr are uniformly dispersed, it is a sintered alloy that exhibits extremely excellent wear resistance and also has excellent machinability.
本発明焼結合金の優秀性を立証するために、従
来焼結材との摩耗比較試験をアムスラー型摩耗試
験機を用いて行つた。 In order to prove the superiority of the sintered alloy of the present invention, a wear comparison test with a conventional sintered material was conducted using an Amsler type wear tester.
先ず、原料粉をC2.5％、Cr12.0％、Ni1.2％、
Mo1.2％、残Feの粉末組成とし、これに潤滑剤と
してステアリン酸亜鉛１％を添加混合し、6ton／
cm2の圧力で成形し、分解アンモニア雰囲気で1145
℃の温度で45分間焼結して、さらに870℃にて30
分保持後、320℃にて２時間の油冷焼戻し処理を
行つて本発明焼結合金を得た。この時の密度は
6.30ｇ／cm3、硬さはHRC35であつた。 First, the raw material powder is C2.5%, Cr12.0%, Ni1.2%,
A powder composition of 1.2% Mo and residual Fe is added and mixed with 1% zinc stearate as a lubricant.
Molded at a pressure of cm 2 and 1145 in decomposed ammonia atmosphere
Sintered for 45 minutes at a temperature of 870℃ and then sintered for 30 minutes at a temperature of 870℃.
After holding for a few minutes, oil cooling and tempering treatment was performed at 320° C. for 2 hours to obtain a sintered alloy of the present invention. The density at this time is
The weight was 6.30 g/cm 3 and the hardness was HRC35.
この焼結合金の顕微鏡写真を第１図に示す。第
１図は、３％ナイタル液腐食処理による200倍の
写真であり、マルテンサイト基地中に白点のFe
−Ｃ−Crの混合炭化物が均一に分散している。 A microscopic photograph of this sintered alloy is shown in FIG. Figure 1 is a 200x photograph taken with 3% nital solution corrosion treatment, showing white spots of Fe in the martensite base.
-C-Cr mixed carbide is uniformly dispersed.
比較材料としては、下記成分の鉄系焼結合金を
用いた。 As a comparison material, an iron-based sintered alloy having the following components was used.
Co、15.0、Ni、8.0、Ｗ、5.0、Cr、10.0、Mo、
5.0、Ｃ、1.5、Fe残、密度6.80ｇ／cm3、硬さ
HRC35、基地マルテンサイト
（試験方法）
各供試材を平面接触滑り摩耗試験機における回
転片とし、これら回転片を共晶黒鉛鋳鉄によつて
製作された平板状試料の固定片に接触し、その接
触面に対し常時潤滑油を供給しつつ回転させた。 Co, 15.0, Ni, 8.0, W, 5.0, Cr, 10.0, Mo,
5.0, C, 1.5, Fe remaining, density 6.80g/cm 3 , hardness
HRC35, base martensite (test method) Each specimen is used as a rotating piece in a plane contact sliding wear tester, and these rotating pieces are brought into contact with a fixed piece of a flat sample made of eutectic graphite cast iron. Rotation was performed while constantly supplying lubricating oil to the contact surfaces.
試験条件は以下の通りである。 The test conditions are as follows.
潤滑油……ロータリーオイル、油温……室温、
油量……0.72／min、荷重……200Kgｆ、回転
速度……（周速）……0.46ｍ／sec、走行時間…
…３時間。 Lubricating oil... rotary oil, oil temperature... room temperature,
Oil amount...0.72/min, load...200Kgf, rotational speed...(peripheral speed)...0.46m/sec, running time...
...3 hours.
この時の試験結果は第２図に示す如くであり、
本発明焼結合金は従来の焼結合金の約1/2の摩耗
量を示し、極めて優れた耐摩耗性を発揮すること
が立証された。 The test results at this time are as shown in Figure 2.
The sintered alloy of the present invention exhibited approximately 1/2 the amount of wear compared to conventional sintered alloys, proving that it exhibits extremely excellent wear resistance.
なお、本発明焼結合金にCu溶浸等の封孔処理
を行うことは、ロータリーコンプレツサーのベー
ンの如く気密性の要求される部品に於ては極めて
有効的である。 Note that performing a sealing treatment such as Cu infiltration on the sintered alloy of the present invention is extremely effective for parts that require airtightness, such as vanes of rotary compressors.
以上説明の如く、本発明焼結合金は、少ない成
分を有効に利用し、またCoの如く貴重な金属を
用いずに優れた耐摩耗性を発揮する焼結合金を得
たものであり、近時の省資源対策にそくした極め
て優れた発明である。 As explained above, the sintered alloy of the present invention effectively utilizes a small number of components and exhibits excellent wear resistance without using precious metals such as Co. This is an extremely excellent invention that is suitable for resource saving measures.
第１図は本発明焼結合金の組織の顕微鏡写真を
示し、第２図は本発明焼結合金と従来材料との摩
耗比較試験結果を示す。
FIG. 1 shows a microscopic photograph of the structure of the sintered alloy of the present invention, and FIG. 2 shows the results of a wear comparison test between the sintered alloy of the present invention and conventional materials.
Claims (1)
％、Ni：1.0〜1.5％、Mo：1.0〜1.5％、残部Feよ
りなり、かつマルテンサイトの基地中にFe−Ｃ
−Crの複合炭化物が均一に分散した組織を有す
ることを特徴とする耐摩耗性鉄系焼結合金材。1 Weight ratio: C: 2.0-3.0%, Cr: 7.0-13.0
%, Ni: 1.0~1.5%, Mo: 1.0~1.5%, balance Fe, and Fe-C in the martensite base.
-A wear-resistant iron-based sintered alloy material characterized by having a structure in which composite carbides of Cr are uniformly dispersed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8134279A JPS565955A (en) | 1979-06-29 | 1979-06-29 | Wear-resistant sintered iron alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8134279A JPS565955A (en) | 1979-06-29 | 1979-06-29 | Wear-resistant sintered iron alloy material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS565955A JPS565955A (en) | 1981-01-22 |
| JPH0124856B2 true JPH0124856B2 (en) | 1989-05-15 |
Family
ID=13743687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8134279A Granted JPS565955A (en) | 1979-06-29 | 1979-06-29 | Wear-resistant sintered iron alloy material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS565955A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5620146A (en) * | 1979-07-23 | 1981-02-25 | Mazda Motor Corp | Sintered alloy for inlet valve seat |
| JPH0617549B2 (en) * | 1984-02-20 | 1994-03-09 | 株式会社東芝 | Wear resistant member with self-lubricating property |
| AU583505B2 (en) * | 1984-05-10 | 1989-05-04 | Matsushita Electric Industrial Co., Ltd. | Flow deflecting assembly |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4996912A (en) * | 1973-01-20 | 1974-09-13 |
-
1979
- 1979-06-29 JP JP8134279A patent/JPS565955A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4996912A (en) * | 1973-01-20 | 1974-09-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS565955A (en) | 1981-01-22 |
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