JPH0563545B2 - - Google Patents
Info
- Publication number
- JPH0563545B2 JPH0563545B2 JP2846184A JP2846184A JPH0563545B2 JP H0563545 B2 JPH0563545 B2 JP H0563545B2 JP 2846184 A JP2846184 A JP 2846184A JP 2846184 A JP2846184 A JP 2846184A JP H0563545 B2 JPH0563545 B2 JP H0563545B2
- Authority
- JP
- Japan
- Prior art keywords
- iron
- cylinder
- graphite
- based sintered
- sintered member
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 16
- 229910002804 graphite Inorganic materials 0.000 claims description 15
- 239000010439 graphite Substances 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 10
- 229910001562 pearlite Inorganic materials 0.000 claims description 6
- 229910000859 α-Fe Inorganic materials 0.000 claims description 5
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 7
- 238000005192 partition Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- -1 cast iron Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004453 electron probe microanalysis Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 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】 〔発明の技術分野〕 本発明は鉄基焼結部材に関する。[Detailed description of the invention] [Technical field of invention] The present invention relates to iron-based sintered members.
一般に機械装置において部品同志が摺接する摺
接部では、部品の摩耗を抑制するために油潤滑が
広く行なわれている。
In general, oil lubrication is widely used in sliding contact parts of mechanical devices where parts come into sliding contact with each other in order to suppress wear of the parts.
例えば、冷蔵庫などに用いられるロータリコン
プレツサでは、図面で示すようにシリンダ１の内
部に設けたロータ２が、シリンダ１の内周面に回
転しながら摺接し、またシリンダ１の孔部１ａに
設けた仕切ベーン３が、往復移動しながら孔部１
ａに摺接する。このため、シリンダ１における内
周面と孔部１ａは、潤滑油を供給して油潤滑を行
なつている。 For example, in a rotary compressor used in a refrigerator, a rotor 2 provided inside a cylinder 1 slides into contact with the inner peripheral surface of the cylinder 1 while rotating as shown in the drawing. The partition vane 3 fills the hole 1 while reciprocating.
Slide into contact with a. Therefore, the inner circumferential surface of the cylinder 1 and the hole 1a are lubricated by supplying lubricating oil.
しかして、従来ロータリコンプレツサのシリン
ダは、摩耗の点を考慮して耐摩耗性を有する金属
例えば鋳鉄で形成したり、あるいは摺動面に二硫
化モリブデンを被着するなどの処理を施して形成
している。しかしながら、これらの材料は自己潤
滑性が不充分であり、油潤滑を充分生かすことが
できず、シリンダの摩耗を確実に抑制できないと
いう問題があつた。 Conventionally, the cylinders of rotary compressors have been made of wear-resistant metals, such as cast iron, or coated with molybdenum disulfide on the sliding surfaces. are doing. However, these materials have a problem in that they have insufficient self-lubricating properties, cannot take full advantage of oil lubrication, and cannot reliably suppress cylinder wear.
本発明は前記事情に基づいてなされたもので、
優れた自己潤滑性を有する鉄基焼結部材を提供す
ることを目的とするものである。
The present invention was made based on the above circumstances, and
The object of the present invention is to provide an iron-based sintered member having excellent self-lubricating properties.
本発明の鉄基焼結部材は、フエライトとパーラ
イトからなる基地組織中に、鉄酸化物と遊離黒鉛
が分散してなるものである。また、表面に青銅等
の銅合金を溶浸したものは更に潤滑性が改善され
る。
The iron-based sintered member of the present invention has iron oxide and free graphite dispersed in a matrix structure consisting of ferrite and pearlite. Furthermore, the lubricity is further improved when the surface is infiltrated with a copper alloy such as bronze.
本発明の鉄基焼結部材において、基地組織はフ
エライトとパーライトからなる硬さと靭性を合わ
せ備えたものである。鉄酸化物は、焼結体を水蒸
気処理することにより基地組織の空孔部分に形成
される。この鉄酸化物は優れた耐凝着性を有する
とともに、基地組織の空孔を封じて油溜りをつく
るので、潤滑油の保油性に優れている。なお、鉄
酸化物は基地組織の空孔を封ずることにより、焼
結体に気密性を与えている。また、基地組織中に
分散して生成析出される遊離黒鉛は、固体潤滑剤
として自己潤滑性に優れている。また硫黄は少量
添加しても良いが、この際基地組織中に分散する
鉄硫化物は、固体潤滑剤として自己潤滑性に優れ
ている。従つて、本発明の焼結合金は、固体潤滑
剤の潤滑作用と潤滑油の保油性の組合せにより、
優れた自己潤滑性を有している。 In the iron-based sintered member of the present invention, the base structure is composed of ferrite and pearlite and has both hardness and toughness. Iron oxide is formed in the pores of the matrix structure by steam-treating the sintered body. This iron oxide has excellent adhesion resistance and also seals the pores in the matrix structure to create oil reservoirs, so it has excellent lubricating oil retention properties. Note that the iron oxide provides airtightness to the sintered body by sealing the pores in the matrix structure. Furthermore, free graphite, which is dispersed and precipitated in the base structure, has excellent self-lubricating properties as a solid lubricant. Further, a small amount of sulfur may be added, but in this case, iron sulfide dispersed in the base structure has excellent self-lubricating properties as a solid lubricant. Therefore, the sintered alloy of the present invention has a combination of the lubricating action of the solid lubricant and the oil retention properties of the lubricating oil.
It has excellent self-lubricating properties.
本発明の焼結部材において、黒鉛は焼結過程で
一部が基地に固溶してパーライトを形成し、他の
部分は遊離黒鉛として基地中に分散して生成析出
される。基地に固溶する黒鉛は、0.2wt％以上で
充分な効果を示し、この効果は0.9wt％まで脆化
を生じることなく維持できる。好ましくは0.3〜
0.8wt％の範囲がよい。遊離黒鉛として生成する
黒鉛は、0.5wt％以上で充分な効果を示し、この
効果は3wt％まで脆化を生じることなく維持す
る。好ましくは0.7〜2.5wt％の範囲がよい。なお
遊離黒鉛を形成する黒鉛は、基地に固溶させる黒
鉛に比して粉末粒径が大きいものを使用する。な
お、硫黄を少量添加することも効果があるが、こ
の場合、硫黄は焼結過程で基地中に分散して鉄硫
化物として生成析出される。この際硫黄は0.05wt
％以上で充分な効果を示し、この効果は2.0wt％
まで強度低下をきたすことなくあらわれる。好ま
しくは0.01〜1.5wt％の範囲がよい。 In the sintered member of the present invention, part of the graphite is solidly dissolved in the matrix during the sintering process to form pearlite, and the other part is dispersed and precipitated in the matrix as free graphite. Graphite dissolved in the base exhibits a sufficient effect at 0.2 wt% or more, and this effect can be maintained up to 0.9 wt% without causing embrittlement. Preferably 0.3~
A range of 0.8wt% is preferable. Graphite produced as free graphite exhibits a sufficient effect at 0.5 wt% or more, and this effect is maintained up to 3 wt% without causing embrittlement. The preferred range is 0.7 to 2.5 wt%. Note that the graphite used to form the free graphite has a powder particle size larger than that of the graphite dissolved in the matrix. Note that it is also effective to add a small amount of sulfur, but in this case, sulfur is dispersed in the matrix during the sintering process and is formed and precipitated as iron sulfide. At this time, sulfur is 0.05wt
% or more shows sufficient effect, and this effect is 2.0wt% or more.
It appears without any decrease in strength. The preferred range is 0.01 to 1.5 wt%.
なお、他にCu，Ni，Moなどを0.1〜10wt％の
範囲で添加することも効果がある。これらは強度
の向上に役立つものである。 In addition, it is also effective to add Cu, Ni, Mo, etc. in a range of 0.1 to 10 wt%. These are useful for improving strength.
本発明の鉄基焼結部材を製造するためには、所
定成分の粉末を混合して原料粉末とし、この原料
粉末を加圧成形し、さらに焼結を行なう。さら
に、得られた焼結体に温度550〜650℃、蒸気圧
0.8〜1.5Kg／cm2、処理時間２〜４時間の条件で水
蒸気処理を行なう。 In order to manufacture the iron-based sintered member of the present invention, powders of predetermined components are mixed to form a raw material powder, this raw material powder is press-molded, and further sintered. Furthermore, the obtained sintered body is heated to a temperature of 550 to 650℃ and a vapor pressure of 550 to 650℃.
Steam treatment is carried out under conditions of 0.8 to 1.5 Kg/cm 2 and treatment time of 2 to 4 hours.
本発明の鉄基焼結部材は、ロータリコンプレツ
サにおけるシリンダ、仕切ベーンを形成するのに
適している。その他に摺接部を有する機械部品を
形成するために広く利用できる。 The iron-based sintered member of the present invention is suitable for forming cylinders and partition vanes in rotary compressors. In addition, it can be widely used to form mechanical parts having sliding contact parts.
(1) 本発明を、ロータリコンプレツサ用シリンダ
を製造する場合に適用した一実施例について説
明する。
(1) An embodiment in which the present invention is applied to manufacturing a cylinder for a rotary compressor will be described.
重量比で粒度−100メツシユの黒鉛粉末0.05
〜３％（重量％、以下同じ）、粒度−325メツシ
ユの黒鉛粉末0.2〜0.9％、残部粘度−100メツ
シユの鉄粉末に、ステアリン酸亜鉛１％を添加
してＶミキサにて５〜30分間混合した。次い
で、混合粉末を成形圧３〜７トン／cm2で加圧し
て、シリンダ形状の粉末成形体を成形した。こ
の粉末成形体をエンドサーミツクガス雰囲気中
にて、温度1050〜1150℃、時間５〜45分の条件
で焼結した。さらに、得られた焼結体を、温度
600℃、蒸気圧１Kg／cm2の過熱蒸気圧中にて３
時間水蒸気処理を施して、シリンダを製造し
た。このシリンダをEPMA（Ｅlectron Ｐrobe
Ｍicroanalyser、日本電子株式会社製、
JXA733）により400倍で確認したところ、主
としてFe2O3からなる鉄酸化物と遊離黒鉛が基
地組織中に分散していることが確認された。ま
た、この時の金属組織はフエライト22vol％、
パーライト54vol％、遊離黒鉛9vol％、鉄酸化
物15vol％であつた。このシリンダをロータリ
コンプレツサ用として、その内部にロータを設
けるとともに、孔部に仕切ベーンを設け、ロー
タリコンプレツサを構成して運転した。なお、
シリンダの内周面および孔部には潤滑油を少量
給油した。その結果、気密性は10Kg／cm2・Ｇで
あり、またロータリコンプレツサを１万時間運
転した際の摩耗量は3μm以下であつた。 Particle size by weight - 100 mesh graphite powder 0.05
~3% (weight %, same hereinafter), 0.2 to 0.9% of graphite powder with particle size of -325 mesh, and iron powder with balance of viscosity of -100 mesh, add 1% of zinc stearate and mix in a V-mixer for 5 to 30 minutes. Mixed. Next, the mixed powder was pressed at a molding pressure of 3 to 7 tons/cm 2 to form a cylindrical powder compact. This powder compact was sintered in an endothermic gas atmosphere at a temperature of 1050 to 1150°C for 5 to 45 minutes. Furthermore, the obtained sintered body is heated to
3 at 600℃ and superheated steam pressure of 1Kg/ cm2
A cylinder was manufactured by subjecting it to a time steam treatment. This cylinder is called EPMA ( Electron Probe ) .
M icroanalyser, manufactured by JEOL Ltd.
JXA733), it was confirmed that iron oxide mainly consisting of Fe 2 O 3 and free graphite were dispersed in the matrix structure. In addition, the metal structure at this time was 22vol% ferrite,
Pearlite was 54 vol%, free graphite was 9 vol%, and iron oxide was 15 vol%. This cylinder was used for a rotary compressor, and a rotor was provided inside the cylinder, and a partition vane was provided in the hole, and a rotary compressor was constructed and operated. In addition,
A small amount of lubricating oil was supplied to the inner peripheral surface and hole of the cylinder. As a result, the airtightness was 10 kg/cm 2 ·G, and the amount of wear was less than 3 μm when the rotary compressor was operated for 10,000 hours.
(2) 実施例１と同様にして得られたコンプレツサ
用のシリンダの仕切ベーンの孔部１ａに常法に
より青銅を溶浸したものを製造した。この仕切
ベーンを実施例１と同様に確認したところ、金
属組織はフエライト22vol％、パーライト54vol
％、遊離黒鉛9vol％、鉄酸化物10vol％、青銅
5vol％であつた。この仕切りベーンを用いてロ
ータリコンプレツサを構成して運転したとこ
ろ、気密性は10Kg／cm2・Ｇであり、またロータ
リコンプレツサを１万時間運転した際の摩耗量
は3μm以下であつた。(2) A cylinder for a compressor obtained in the same manner as in Example 1 was manufactured by infiltrating the hole 1a of the partition vane with bronze by a conventional method. When this partition vane was confirmed in the same manner as in Example 1, the metal structure was 22 vol% ferrite and 54 vol% pearlite.
%, free graphite 9vol%, iron oxide 10vol%, bronze
It was 5vol%. When a rotary compressor was constructed using this partition vane and operated, the airtightness was 10 kg/cm 2 ·G, and the amount of wear was less than 3 μm when the rotary compressor was operated for 10,000 hours.
(3) 実施例１の焼結体に比較して水蒸気処理を施
さないもの（比較例１）、水蒸気処理の代わり
に銅溶浸を行つたもの（比較例２）、遊離黒鉛
を有しないもの（比較例３）を比較例とし、ま
た従来の鋳鉄材（FG25）からなるものを比較
例４として実施例と同様に気密性およびロータ
リコンプレツサを１万時間運転した際の摩耗量
を測定した。その結果、気密性は夫々１Kg／
cm2・Ｇ以下、10Kg／cm2・Ｇ、10Kg／cm2・Ｇ、10
Kg／cm2・Ｇ超であつた。また、摩耗量は夫々運
転不可により測定不能、10μm、5μm、5μmで
あつた。(3) Compared to the sintered body of Example 1, one without steam treatment (Comparative Example 1), one in which copper infiltration was performed instead of steam treatment (Comparative Example 2), and one without free graphite. (Comparative Example 3) was used as a comparative example, and a conventional cast iron material (FG25) was used as a comparative example 4, and the airtightness and the amount of wear when the rotary compressor was operated for 10,000 hours were measured in the same manner as in the example. . As a result, the airtightness was 1Kg/
cm 2・G or less, 10Kg/cm 2・G, 10Kg/cm 2・G, 10
It was over Kg/ cm2・G. Furthermore, the amount of wear was 10 μm, 5 μm, and 5 μm, which could not be measured due to inoperability.
以上説明したように本発明によれば、固体潤滑
剤の潤滑作用と、潤滑油の保油性とが組合された
優れた自己潤滑性を有する鉄基焼結部材を得るこ
とができる。
As explained above, according to the present invention, it is possible to obtain an iron-based sintered member having excellent self-lubricating properties that combine the lubricating action of a solid lubricant and the oil retention property of a lubricating oil.
図面は本発明の焼結部材を適用したシリンダを
備えたロータリコンプレツサを示す概略的断面図
である。
１…シリンダ、２…ロータ、３…仕切ベーン。
The drawing is a schematic sectional view showing a rotary compressor equipped with a cylinder to which the sintered member of the present invention is applied. 1...Cylinder, 2...Rotor, 3...Partition vane.
Claims (1)
に、鉄酸化物と遊離黒鉛が分散してなることを特
徴とする鉄基焼結部材。 ２ 鉄硫化物が分散してなる特許請求の範囲第１
項に記載の鉄基焼結部材。 ３ 表面に銅合金を溶浸してなる特許請求の範囲
第１項に記載の鉄基焼結部材。[Claims] 1. An iron-based sintered member characterized in that iron oxide and free graphite are dispersed in a matrix structure consisting of ferrite and pearlite. 2 Claim 1 consisting of dispersed iron sulfide
The iron-based sintered member described in . 3. The iron-based sintered member according to claim 1, the surface of which is infiltrated with a copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2846184A JPS60174847A (en) | 1984-02-20 | 1984-02-20 | Ferrous sintered member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2846184A JPS60174847A (en) | 1984-02-20 | 1984-02-20 | Ferrous sintered member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60174847A JPS60174847A (en) | 1985-09-09 |
| JPH0563545B2 true JPH0563545B2 (en) | 1993-09-10 |
Family
ID=12249301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2846184A Granted JPS60174847A (en) | 1984-02-20 | 1984-02-20 | Ferrous sintered member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60174847A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106256465B (en) * | 2016-08-22 | 2018-08-07 | 泉州台商投资区华奥电子科技有限公司 | A kind of restorative procedure of car motor rotor |
-
1984
- 1984-02-20 JP JP2846184A patent/JPS60174847A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60174847A (en) | 1985-09-09 |
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