JPS6254385B2 - - Google Patents
Info
- Publication number
- JPS6254385B2 JPS6254385B2 JP18155484A JP18155484A JPS6254385B2 JP S6254385 B2 JPS6254385 B2 JP S6254385B2 JP 18155484 A JP18155484 A JP 18155484A JP 18155484 A JP18155484 A JP 18155484A JP S6254385 B2 JPS6254385 B2 JP S6254385B2
- Authority
- JP
- Japan
- Prior art keywords
- wear resistance
- alloy
- gears
- content
- surface pressure
- 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
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Description
〔産業上の利用分野〕
この発明は、すぐれた耐摩耗性を有し、特に高
速高面圧条件下で使用される歯車の製造に用いる
のに適したCu合金に関するものである。
〔従来の技術〕
一般に、自動車やロボツトなどの各種の駆動装
置には多数の歯車が使用され、この歯車の製造に
はアルミニウム青銅や高力黄銅などが多用されて
いることはよく知られるところである。
一方、近年、これらの駆動装置の高性能化に伴
い、これに用いられている歯車の使用条件も一段
と厳しさを増す傾向にあり、特に高速高面圧条件
下での使用を余儀なくされつつあるのが現状であ
る。
〔発明が解決しようとする問題点〕
しかし、上記のアルミニウム青銅や高力黄銅な
どで製造された歯車を高速高面圧の条件下で使用
すると、摩耗が著しく、比較的短時間で使用寿命
に到るものであつた。
〔問題点を解決するための手段〕
そこで、本発明者等は、上述のような観点か
ら、高速高面圧条件下での使用に際して、すぐれ
た耐摩耗性を示す歯車を開発すべく、特にCu合
金に着目し研究を行なつた結果、重量％で（以下
％は重量％を示す）、
Zn：５〜42％、
Al：２〜11％、
Ti：0.1〜３％、
Mn：0.2〜７％、
を含有し、さらに必要に応じて、
Ni、Fe、およびCoのうちの１種または２種以
上：0.1〜４％、
を含有し、残りがCuと不可避不純物からなる組
成を有するCu合金は、これを各種の歯車として
用いた場合、特に高速高面圧条件での使用に際し
て、すぐれた耐摩耗性を示すという知見を得たの
である。
この発明は、上記知見にもとづいてなされたも
のであつて、以下に成分組成を上記の通りに限定
した理由を説明する。
(a) ZnおよびAl
これらの成分には、共存した状態で、合金の
強度および靭性を向上させる作用があるが、そ
の含有量が、それぞれZn：５％未満、Al：２
％未満では前記作用に所望の効果が得られず、
一方、その含有量が、Zn：42％およびAl：11
％を越えると、合金の靭性が急激に低下するよ
うになることから、その含有量をそれぞれ
Zn：５〜42％、Al：２〜11％と定めた。
(b) Ti
Ti成分は、CuおよびAlと金属間化合物を形
成し、これが後述のMn成分の作用によつて球
状（粒状）化され、素地中に均一に分散するよ
うになることから、合金の耐摩耗性が著しく向
上するようになるが、その含有量が0.1未満で
は金属間化合物の形成が少なすぎて所望の耐摩
耗性を確保することができず、一方３％を越え
て含有させると、合金の靭性が劣化するように
なることから、その含有量を0.1〜３％と定め
た。
(c) Mn
Mn成分には、素地に固溶して、これを強化
すると共に、上記の金属間化合物などの分散粒
子を球状化し、かつ素地に均一に分散せしめ、
もつて耐摩耗性、強度、および延性を向上せし
める作用があるが、その含有量が0.2％未満で
は前記作用に所望の効果が得られず、一方７％
を越えて含有させても前記作用により一層の向
上効果が見られず、かえつて溶製時におけるス
ラグ発生が多くなつて含有歩留の低下をきたす
ようになることから、その含有量を0.2〜７％
と定めた。
(d) Ni、Fe、およびCo
これらの成分は、上記の金属間化合物形成成
分と結合して複化合物を形成し、これらの複化
合物はMn成分によつて球状化されて素地中に
均一に分散するようになることから、合金の耐
摩耗性がより一層向上するようになるので、よ
り一段とすぐれた耐摩耗性が要求される場合に
必要に応じて含有されるが、その含有量が0.1
％未満では所望の耐摩耗性向上効果が得られ
ず、一方４％を越えて含有させても耐摩耗性に
さらに一段の改善効果が現われず、かえつて溶
解温度の上昇を招き、合金溶製が困難になるこ
とから、その含有量を0.1〜４％と定めた。
〔実施例〕
つぎに、この発明の歯車用Cu合金を実施例に
より具体的に説明する。
通常の高周波炉を用い、黒鉛るつぼ中にて、そ
れぞれ第１表に示される成分組成をもつた本発明
Cu合金１〜18および比較Cu合金１〜４の溶湯を
調製し、金型に鋳造して肩部直径：70mmφ×底部
直径：60mmφ×高さ：200mmの寸法をもつたイン
ゴツトとした後、通常の熱間鍛造にて直径：35mm
φの丸棒とし、ついで、この丸棒の一部より外
径：30mmφ×内径：16mmφ×厚さ：８
[Industrial Application Field] The present invention relates to a Cu alloy that has excellent wear resistance and is particularly suitable for use in manufacturing gears used under high speed and high surface pressure conditions. [Prior Art] Generally, many gears are used in various drive devices such as automobiles and robots, and it is well known that materials such as aluminum bronze and high-strength brass are often used in the manufacture of these gears. . On the other hand, in recent years, as the performance of these drive devices has improved, the operating conditions for the gears used in these devices have also become more severe, and in particular, they are being forced to be used under conditions of high speed and high surface pressure. is the current situation. [Problems to be solved by the invention] However, when gears made of the above-mentioned aluminum bronze or high-strength brass are used under conditions of high speed and high surface pressure, they wear out significantly and their service life ends in a relatively short period of time. It was something to be desired. [Means for Solving the Problems] Therefore, from the above-mentioned viewpoint, the present inventors have developed a gear that exhibits excellent wear resistance when used under high speed and high surface pressure conditions. As a result of research focusing on Cu alloys, in weight% (hereinafter % indicates weight%), Zn: 5-42%, Al: 2-11%, Ti: 0.1-3%, Mn: 0.2- 7%, and if necessary, one or more of Ni, Fe, and Co: 0.1 to 4%, and the remainder is Cu and unavoidable impurities. It was discovered that the alloy exhibits excellent wear resistance when used in various gears, especially when used under high speed and high surface pressure conditions. This invention was made based on the above knowledge, and the reason why the component composition was limited as described above will be explained below. (a) Zn and Al These components have the effect of improving the strength and toughness of the alloy when coexisting, but their contents are less than 5% for Zn and 2% for Al, respectively.
If it is less than %, the desired effect cannot be obtained,
On the other hand, its content is Zn: 42% and Al: 11
%, the toughness of the alloy decreases rapidly, so the content should be adjusted accordingly.
Zn: 5-42%, Al: 2-11%. (b) Ti The Ti component forms an intermetallic compound with Cu and Al, which is spheroidized (granular) by the action of the Mn component described later and becomes uniformly dispersed in the base material. However, if the content is less than 0.1, the formation of intermetallic compounds is too small to ensure the desired wear resistance, while if the content exceeds 3%. Since the toughness of the alloy deteriorates, the content was set at 0.1 to 3%. (c) Mn The Mn component is dissolved in solid solution in the base material to strengthen it, and also to spheroidize dispersed particles such as the above-mentioned intermetallic compound and uniformly disperse it in the base material.
It has the effect of improving wear resistance, strength, and ductility, but if the content is less than 0.2%, the desired effect cannot be obtained;
Even if the content exceeds 0.2 to 0.2, no further improvement effect can be seen due to the above-mentioned action, and instead, slag generation during melting increases and the content yield decreases. 7%
It was determined that (d) Ni, Fe, and Co These components combine with the above-mentioned intermetallic compound-forming components to form a composite compound, and these composite compounds are spheroidized by the Mn component and uniformly distributed in the substrate. Since it becomes dispersed, the wear resistance of the alloy is further improved, so it is included as necessary when even better wear resistance is required, but the content is 0.1
If the content is less than 4%, the desired effect of improving wear resistance cannot be obtained, and on the other hand, if the content exceeds 4%, no further improvement in wear resistance will be achieved, and instead the melting temperature will increase, which may cause problems in alloy melting. The content was determined to be 0.1 to 4%. [Example] Next, the Cu alloy for gears of the present invention will be specifically explained using Examples. The present invention was prepared using a normal high frequency furnace and in a graphite crucible, each having the component composition shown in Table 1.
Molten metals of Cu alloys 1 to 18 and comparative Cu alloys 1 to 4 are prepared and cast into a mold to form an ingot with dimensions of shoulder diameter: 70 mmφ x bottom diameter: 60 mmφ x height: 200 mm. Diameter: 35mm by hot forging
Take a round bar of φ, and then from a part of this round bar, outer diameter: 30mmφ x inner diameter: 16mmφ x thickness: 8
【表】【table】
第１表に示される結果から、本発明Cu合金１
〜18は、いずれも上記のような高速高面圧の条件
下で、従来アルミニウム青銅として知られている
比較Cu合金１、２および同じく高力黄銅として
知られている比較Cu合金３、４に比してすぐれ
た耐摩耗性を示し、かつ高強度および高靭性を具
備することが明らかである。
上記のように、本発明Cu合金は、高強度およ
び高靭性を有し、かつすぐれた耐摩耗性を有し、
特に高速高面圧条件下での耐摩耗性にすぐれてい
るので、これらの特性が要求される各種の高性能
駆動装置の歯車として用いた場合に、すぐれた性
能を発揮し、使用寿命の著しい延命化を可能とす
るなどの工業上有用な特性を有するのである。
From the results shown in Table 1, the present invention Cu alloy 1
-18, both under the conditions of high speed and high surface pressure as described above, in Comparative Cu alloys 1 and 2, conventionally known as aluminum bronze, and Comparative Cu alloys 3 and 4, also known as high strength brass. It is clear that it exhibits excellent wear resistance, and has high strength and toughness. As mentioned above, the Cu alloy of the present invention has high strength and toughness, as well as excellent wear resistance.
In particular, it has excellent wear resistance under high speed and high surface pressure conditions, so when used as gears in various high-performance drive devices that require these characteristics, it exhibits excellent performance and has a remarkable service life. It has industrially useful properties such as extending life.
Claims (1)
成（以上重量％）を有することを特徴とする耐摩
耗性のすぐれた歯車用Cu合金。 ２ Zn：５〜42％、 Al：２〜11％、 Ti：0.1〜３％、 Mn：0.2〜７％、 を含有し、さらに、 Ni、Fe、およびCoのうちの１種または２種以
上：0.1〜４％、 を含有し、残りがCuと不可避不純物からなる組
成（以上重量％）を有することを特徴とする耐摩
耗性のすぐれた歯車用Cu合金。[Claims] 1. A composition containing 1 Zn: 5 to 42%, Al: 2 to 11%, Ti: 0.1 to 3%, Mn: 0.2 to 7%, with the remainder consisting of Cu and unavoidable impurities. A Cu alloy for gears with excellent wear resistance, characterized by a high wear resistance (% by weight). 2 Contains Zn: 5-42%, Al: 2-11%, Ti: 0.1-3%, Mn: 0.2-7%, and further contains one or more of Ni, Fe, and Co. A Cu alloy for gears with excellent wear resistance, characterized by having a composition (weight %) of: 0.1 to 4%, and the remainder consisting of Cu and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18155484A JPS6160847A (en) | 1984-08-30 | 1984-08-30 | Cu alloy for gear having superior wear resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18155484A JPS6160847A (en) | 1984-08-30 | 1984-08-30 | Cu alloy for gear having superior wear resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6160847A JPS6160847A (en) | 1986-03-28 |
| JPS6254385B2 true JPS6254385B2 (en) | 1987-11-14 |
Family
ID=16102813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18155484A Granted JPS6160847A (en) | 1984-08-30 | 1984-08-30 | Cu alloy for gear having superior wear resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6160847A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0389309U (en) * | 1989-12-27 | 1991-09-11 | ||
| JP4337091B2 (en) * | 2003-12-02 | 2009-09-30 | 三菱マテリアル株式会社 | Copper alloy synchronizer ring with excellent plastic flow resistance in high heat generation environment |
-
1984
- 1984-08-30 JP JP18155484A patent/JPS6160847A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6160847A (en) | 1986-03-28 |
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