JPH0350821B2 - - Google Patents
Info
- Publication number
- JPH0350821B2 JPH0350821B2 JP524284A JP524284A JPH0350821B2 JP H0350821 B2 JPH0350821 B2 JP H0350821B2 JP 524284 A JP524284 A JP 524284A JP 524284 A JP524284 A JP 524284A JP H0350821 B2 JPH0350821 B2 JP H0350821B2
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- wear resistance
- brass
- strength
- amount added
- 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
- 229910045601 alloy Inorganic materials 0.000 claims description 17
- 239000000956 alloy Substances 0.000 claims description 17
- 229910001369 Brass Inorganic materials 0.000 claims description 13
- 239000010951 brass Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 description 9
- 229910000765 intermetallic Inorganic materials 0.000 description 5
- 238000005204 segregation Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Landscapes
- Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
- Mechanical Operated Clutches (AREA)
Description
この発明は、黄銅合金特に耐摩耗性が必要とさ
れる用途に有用な黄銅合金に関するものである。
従来、高速高荷重の下で使用される耐摩耗性黄
銅合金としては、高力黄銅にSiを添加して高硬度
のMn5Si3等の化合物を析出させたものが使用さ
れている。しかしながら高速化、潤滑油の低粘度
化等により使用条件が一段と苛酷な摺動条件下で
は耐摩耗性等実用面では充分とはいえず更に高性
能なものが望まれている。
本発明は上記の点に鑑みて提案されたもので、
高力黄銅に比べて優れた耐摩耗性を有する銅合金
を提供することを目的とし、重量％でCu55〜70
％，Al1.0〜6.0％，Fe0.1〜3.0％，Si0.05〜2.0％，
Sn0.1〜3.0％Zro.1〜3.0％および残部はZnからな
ること、およびこの合金にPb0.1〜3.0％添加した
ことを特徴とする。
上記各構成元素を選定し、また上記割合に限定
した理由は下記の通りである。
即ち、Alはβ相形成促進元素であり、合金の
機械的強度を高めるが、添加量が6.0％以上では
鋳造組織の粗大化傾向があり、また酸化スラグを
生成しやすく靭性が低下する。一方添加量が1.0
％以下では強靭効果が認められない。
Feは金属間化合物を強化し、また鋳造組織を
微細化する効果がある。ただし、添加量が3.0％
を上回ると金属間化合物が粗大化して機械加工性
を損ない、また耐摩耗性でバラツキが大きくな
る。一方添加量が0.1％を下回ると上記効果は認
められない。
Zrは本合金特有の金属間化合物を析出させる
には必須の元素で、析出物の均一分布および析出
物の硬度向上に寄与し、これが耐摩耗性に著しい
効果を示し、3.0％以上では析出物が粗大化し、
偏析が生じ、0.1％以下では上記効果が認められ
ない。
SnはZrと結合してマトリツクスを強化し、な
おかつ金属間化合物の偏析防止に大きく寄与し、
３％以上では靭性低下、鋳造性を悪くし、0.1％
以下ではその効果は認められない。
また、SiもZrと同様に金属間化合物を強化し
0.05〜２％が好適範囲である。２％以上では析出
物の偏析あるいは靭性が低下し0.05％以下ではそ
の効果が少ない。
Puは上記同合金の優れた耐摩耗性を維持しな
がら、機械加工性、特に被切削性を向上させるこ
とを目的とし、添加量が３％以上では成分偏析が
著しくなり強度低下が見られ、一方添加量が0.1
％以下では被切削性を向上させる効果は認められ
ない。以下本発明の実施例について説明する。
実施例 １
この発明合金の各種組成のものと、公知の高力
黄銅を溶解鋳造し熱間鋳造したものの、特性値を
比較したところ第１表の効果が得られた。この結
果から本発明合金が従来の高力黄銅に比較して引
張り試験、硬度とも従来品より優れており、靭性
に優れているといえる。
TECHNICAL FIELD This invention relates to brass alloys, particularly brass alloys useful in applications requiring wear resistance. Conventionally, wear-resistant brass alloys used under high-speed and high-load conditions have been made by adding Si to high-strength brass to precipitate highly hard compounds such as Mn 5 Si 3 . However, under sliding conditions where operating conditions are becoming more severe due to higher speeds, lower viscosity of lubricating oil, etc., wear resistance is not sufficient for practical purposes, and even higher performance is desired. The present invention was proposed in view of the above points, and
The purpose is to provide a copper alloy with superior wear resistance compared to high-strength brass, with Cu55~70 in weight%.
%, Al1.0~6.0%, Fe0.1~3.0%, Si0.05~2.0%,
The alloy is characterized by consisting of Sn0.1-3.0%Zro.1-3.0% and the balance being Zn, and that Pb0.1-3.0% is added to this alloy. The reasons for selecting each of the above constituent elements and limiting them to the above proportions are as follows. That is, Al is an element that promotes β phase formation and increases the mechanical strength of the alloy, but if the amount added is 6.0% or more, the cast structure tends to become coarser, and oxidized slag is likely to be generated, resulting in a decrease in toughness. On the other hand, the amount added is 1.0
% or less, no toughening effect is observed. Fe has the effect of strengthening intermetallic compounds and refining the casting structure. However, the amount added is 3.0%
If it exceeds this, the intermetallic compounds will become coarse, impairing machinability, and variations in wear resistance will increase. On the other hand, if the amount added is less than 0.1%, the above effects are not observed. Zr is an essential element for precipitating intermetallic compounds unique to this alloy, contributing to the uniform distribution of precipitates and improving the hardness of the precipitates, which has a significant effect on wear resistance. becomes coarser,
Segregation occurs and the above effects are not observed at 0.1% or less. Sn combines with Zr to strengthen the matrix and also greatly contributes to preventing segregation of intermetallic compounds.
If it exceeds 3%, toughness decreases and castability deteriorates, and 0.1%
The effect is not recognized below. Also, like Zr, Si also strengthens intermetallic compounds.
The preferred range is 0.05-2%. If it is more than 2%, the segregation of precipitates or toughness will be reduced, and if it is less than 0.05%, the effect will be small. The purpose of Pu is to improve machinability, especially machinability, while maintaining the excellent wear resistance of the above-mentioned alloy.If the amount added exceeds 3%, component segregation becomes significant and strength decreases. On the other hand, the amount added is 0.1
% or less, no effect of improving machinability is observed. Examples of the present invention will be described below. Example 1 Comparison of the characteristic values of various compositions of the alloy of the present invention and those made by melting and hot casting known high-strength brass resulted in the effects shown in Table 1. From these results, it can be said that the alloy of the present invention is superior to conventional high-strength brass in both tensile test and hardness, and has excellent toughness.
【表】
実施例 ２
この発明合金（No.１，２およびNo.5.6）と市販
の高力黄銅No.１（従来の高力黄銅ではNo.１のSi−
Mn系のものが耐摩耗性が優れている）およびNo.
２とを用いて自動車用変速機のシンクロナイザー
リングを作成し、それのテーパ面と、鋼材（JIS
記号SCM420H）により作成したテーパコーンと
の摺動による摩耗試験の結果を示す。
試験条件は、リング押付荷重60Kgｆ、摺動速度
4.7ｍ／sec、押付回転2000回とし、潤滑油は
ATFデクスロンとSAE10W−30の２種類とする。
なお摩耗変位量は、テーパコーン軸方向に対する
変位量である。[Table] Example 2 This invention alloy (No. 1, 2 and No. 5.6) and commercially available high strength brass No. 1 (No. 1 in conventional high strength brass)
Mn-based materials have excellent wear resistance) and No.
2 was used to create a synchronizer ring for an automobile transmission, and its tapered surface and steel material (JIS
The results of a wear test by sliding with a taper cone made with the symbol SCM420H) are shown. Test conditions are ring pressing load 60Kgf, sliding speed
4.7m/sec, pressing rotation 2000 times, lubricating oil
There are two types: ATF Dexron and SAE10W-30.
Note that the amount of wear displacement is the amount of displacement with respect to the axial direction of the taper cone.
【表】
以上の通り本発明合金は、従来の高力黄銅合金
よりも機械的性質および耐摩耗性のすぐれた黄銅
合金で、特に高速、高荷重における耐摩耗性がす
ぐれており、過酷な使用条件に充分な耐えうる合
金である。[Table] As described above, the alloy of the present invention is a brass alloy that has superior mechanical properties and wear resistance than conventional high-strength brass alloys, and has particularly excellent wear resistance at high speeds and high loads, and is suitable for severe use. It is an alloy that can withstand the conditions.
Claims (1)
Fe0.1〜3.0％，Si0.05〜2.0％，Sn0.1〜3.0％，
Zr0.1〜3.0％および残部はZnからなることを特徴
とする耐摩耗性黄銅合金。 ２ 重量割合でCu55〜70％，Al1.0〜6.0％，
Fe0.1〜3.0％，Si0.1〜2.0％，Sn0.05〜3.0％，
Zr0.1〜3.0％，Pb0.1〜3.0％および残部はZnから
なることを特徴とする耐摩耗性黄銅合金。[Claims] 1. Cu55-70%, Al1.0-6.0% by weight,
Fe0.1~3.0%, Si0.05~2.0%, Sn0.1~3.0%,
A wear-resistant brass alloy characterized by consisting of 0.1 to 3.0% Zr and the balance Zn. 2 Weight percentage: Cu55-70%, Al1.0-6.0%,
Fe0.1~3.0%, Si0.1~2.0%, Sn0.05~3.0%,
A wear-resistant brass alloy characterized by consisting of 0.1-3.0% Zr, 0.1-3.0% Pb, and the balance Zn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP524284A JPS60149740A (en) | 1984-01-14 | 1984-01-14 | Wear resistant brass alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP524284A JPS60149740A (en) | 1984-01-14 | 1984-01-14 | Wear resistant brass alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60149740A JPS60149740A (en) | 1985-08-07 |
| JPH0350821B2 true JPH0350821B2 (en) | 1991-08-02 |
Family
ID=11605727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP524284A Granted JPS60149740A (en) | 1984-01-14 | 1984-01-14 | Wear resistant brass alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60149740A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4874439A (en) * | 1987-02-24 | 1989-10-17 | Mitsubishi Kinzoku Kabushiki Kaisha | Synchronizer ring in speed variator made of wear-resistant copper alloy having high strength and toughness |
| KR910009871B1 (en) * | 1987-03-24 | 1991-12-03 | 미쯔비시마테리얼 가부시기가이샤 | Cu-alloy ring |
| US8950941B2 (en) * | 2010-05-21 | 2015-02-10 | Oiles Corporation | High-strength brass alloy for sliding member, and sliding member |
-
1984
- 1984-01-14 JP JP524284A patent/JPS60149740A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60149740A (en) | 1985-08-07 |
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