JPS5841332B2 - Exterior parts materials for casting - Google Patents
Exterior parts materials for castingInfo
- Publication number
- JPS5841332B2 JPS5841332B2 JP17180179A JP17180179A JPS5841332B2 JP S5841332 B2 JPS5841332 B2 JP S5841332B2 JP 17180179 A JP17180179 A JP 17180179A JP 17180179 A JP17180179 A JP 17180179A JP S5841332 B2 JPS5841332 B2 JP S5841332B2
- Authority
- JP
- Japan
- Prior art keywords
- casting
- exterior parts
- die
- parts materials
- brass
- 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
- 239000000463 material Substances 0.000 title claims description 18
- 238000005266 casting Methods 0.000 title claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 238000004512 die casting Methods 0.000 description 10
- 239000011701 zinc Substances 0.000 description 9
- 229910001369 Brass Inorganic materials 0.000 description 7
- 239000010951 brass Substances 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910052725 zinc Inorganic materials 0.000 description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 238000005242 forging Methods 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 description 2
- 239000010956 nickel silver Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910005487 Ni2Si Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Adornments (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
本発明は、ダイキャストなど鋳造用外装部品材料に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exterior component material for casting such as die casting.
現在、時計用外装部品材料として用いられている銅合金
は、黄銅、洋白がほとんどであり、これらの材料を用い
て、鍛造、切削、研磨の工程を経て、時計用外装部品が
製造されている。Currently, most of the copper alloys used as materials for watch exterior parts are brass and nickel silver, and these materials are used to manufacture watch exterior parts through forging, cutting, and polishing processes. There is.
しかしながら、近年、各種外装部品の形状が多様化する
につれ、上記の鍛造法では加工成形が困難な形状が多く
なり、そのため鍛造法に変えて、ダイキャスト法による
成形が、しだいに用いられはじめている。However, in recent years, as the shapes of various exterior parts have diversified, many shapes have become difficult to process and form using the above-mentioned forging method, so die-casting has gradually begun to be used instead of forging. .
しかし、このダイキャスト鋳造用に用いられている外装
部品材料は、現在のところ黄銅に限定されており、その
黄銅材は下記の様な問題を有しているのが実情である。However, the exterior component material used for die casting is currently limited to brass, and the fact is that brass material has the following problems.
（１） ダイキャスト製品の肉厚が薄くなるほど、ピ
ンホールの発生が少くなるというダイキャスト法固有の
特徴を有するため、設計上極限まで胴の肉厚を薄くして
いる。(1) The thinner the wall thickness of the die-cast product is, the fewer pinholes will occur, which is a unique feature of the die-casting method, so the wall thickness of the body is made as thin as possible in terms of design.
そのため、従来の黄銅以上の強度を有する新しいダイキ
ャスト用材料が必要となってきている。Therefore, there is a need for a new material for die casting that has strength greater than that of conventional brass.
又、時計側自体も、年々薄型化する傾向にあるため、そ
の要求に対応できる新しい高強度材料が必要となってき
ている。Furthermore, as watches themselves tend to become thinner year by year, new high-strength materials that can meet these demands are becoming necessary.
（２）黄銅は、亜鉛を３０％以上含むため、この亜鉛の
影響で応力腐食が発生しやすく、外装部品として組み込
んだ状態で高い応力の加わる個所には、使用できないの
が現状であった。(2) Brass contains 30% or more of zinc, so it is susceptible to stress corrosion due to the influence of zinc, and currently cannot be used in areas where high stress is applied when it is incorporated as an exterior component.
そのため、応力腐食のない材料でダイキャスト加工に適
したものが望まれていた。Therefore, a material that is suitable for die-casting and is free from stress corrosion has been desired.
本発明は、この問題を解決するもので、ＣｕＺｎ−８ｉ
−Ｎｉ系の材料を、ダイキャストを主体とする鋳造用外
装部品材料として用いることを特徴とするものである。The present invention solves this problem and uses CuZn-8i
The present invention is characterized in that a -Ni-based material is used as an exterior component material for casting mainly for die casting.
本発明で述べるＣ ｕ−Ｚ ｎＳ ｉ −Ｎ ｉ系の合
金は、Ｚｎ；８〜２０％、Ｓｉ；１〜７％ Ｎ ｉｒ
１〜６％ 残りがＣｕからなる材料であり、Ｎｉ−８ｉ
系の金属間化合物の析出により、従来の黄銅の約３倍の
引張強度と約２倍の硬さを有する材料である。The Cu-ZnSi-Ni alloy described in the present invention contains Zn; 8 to 20%, Si; 1 to 7%, Nir
1-6% The rest is a material consisting of Cu, and Ni-8i
Due to the precipitation of intermetallic compounds, this material has about three times the tensile strength and about twice the hardness of conventional brass.
このＣｕ−Ｚｎ−８ｉ−Ｎｉ系合金は、黄銅や洋白と比
較してＺｎが少なく脱亜鉛現象や、応力腐食割れも生じ
ない。This Cu-Zn-8i-Ni alloy contains less Zn than brass or nickel silver, and does not cause dezincification or stress corrosion cracking.
又、Ｓｉの添加により素材の強度が増し、熱処理を行う
ことにより、Ｎｔ２ Ｓｌの金属間化合物を析出させ
れば一層の強度上昇がはかれる。Furthermore, the strength of the material is increased by adding Si, and the strength can be further increased by precipitating an intermetallic compound of Nt2Sl through heat treatment.
ここで、ＺｎとＳｉとＮｉの成分限定の理由を述べる。Here, the reason for limiting the components of Zn, Si, and Ni will be described.
Ｚ ｎ ｐ合金の融点を下げ、鋳造性を上げるためには
亜鉛の量は８％以上必要である。In order to lower the melting point of the Znp alloy and increase its castability, the amount of zinc is required to be 8% or more.
亜鉛をしだいに増加してゆくと、融点が下がり、鋳造性
が向上する。Gradually increasing zinc content lowers the melting point and improves castability.
しかし、亜鉛が２０％以上になると、耐食性がしだいに
低下するため、Ｚｎは２０％以下とする。However, when the zinc content exceeds 20%, the corrosion resistance gradually decreases, so the Zn content is set to 20% or less.
Ｓｉ；ダイヤキャスト法により外装部品をピンホールの
ない外観で仕上げるためには、溶融した合金の流動性を
上げなくてはならない。Si: In order to finish exterior parts with a pinhole-free appearance using the diamond casting method, the fluidity of the molten alloy must be increased.
Ｓｉ量は１％以上存在すれば、湯の流動性は上り、又Ｎ
ｉとの化合物の析出による材料強化作用も顕著になって
くる。If the Si content is 1% or more, the fluidity of the hot water will increase, and N
The material strengthening effect due to the precipitation of compounds with i also becomes noticeable.
しかし、Ｓｉは７％を超えると合金への固溶限を超える
ため、急激に脆くなる。However, if Si exceeds 7%, the solid solubility limit in the alloy is exceeded, and the alloy suddenly becomes brittle.
そのため、Ｓｉは１〜７％とする。Therefore, Si is set to 1 to 7%.
Ｎｉ；Ｎｉの添加Ｓｉの金属間化合物Ｎｉ２Ｓｉが形成
されるため、その化合物の析出硬化が顕著に現われる１
％以上とし、又このＮｉ量が多すぎると、素材の脆化が
進行し、又、湯の流れが悪くなるため６％以下とする。Ni: Since the intermetallic compound Ni2Si of Si is formed when Ni is added, precipitation hardening of that compound appears markedly.
% or more, and if the Ni amount is too large, the material will become brittle and the flow of hot water will become poor, so the Ni amount should be 6% or less.
以下に、具体的な実施例を述べる。Specific examples will be described below.
第１表に示す成分１，２の、Ｃｕ−Ｚｎ−８ｉ −Ｎ
ｉ合金により、平均肉厚０．５ ｍｗの時計用側を、ダ
イキャスト法により鋳造した。Cu-Zn-8i-N of components 1 and 2 shown in Table 1
A watch side having an average wall thickness of 0.5 mw was cast from i-alloy by die casting.
鋳造装置は、８０ｔのコールドチェンバーダイキャスト
マシーンを用いた。The casting device used was an 80-ton cold chamber die-casting machine.
この成分により、製造した時計用側は、第２表の如く、
従来の材料と比較してすぐれた特性を有し、薄型の特殊
形状の外装部品に適している。With this component, the manufactured watch side is as shown in Table 2.
It has superior properties compared to conventional materials and is suitable for thin and specially shaped exterior parts.
なお第２表による機械的特性は、Ｊ工Ｓに基づく試験片
を作成して測定した。Note that the mechanical properties shown in Table 2 were measured by preparing test pieces based on J Engineering S.
試験片の熱処理は９５０゜３０分保持後急冷して溶体化
し、６０００２時間の時効を施した。The test piece was heat-treated by holding it at 950° for 30 minutes, rapidly cooling it into a solution, and aging it for 60,002 hours.
又耐応力腐食性は、胴に裏ぶた、ガラス等を組み込んだ
状態でアンモニア雰囲気中に２４時間放置し、胴の割れ
の発生を観察した。Stress corrosion resistance was determined by leaving the case with the case back, glass, etc. assembled in an ammonia atmosphere for 24 hours, and observing the occurrence of cracks in the case.
なお、本発明は、携帯時計用の側、ガラス縁、裏ぶた、
リューズ、バンドなど、その他ライターケースなどの外
装部品に適用され、鋳造法は、ダイカストの他、ロスト
ワックス法など一般の鋳造方法が適用される。In addition, the present invention covers the side, glass rim, back cover,
It is applied to crowns, bands, and other exterior parts such as lighter cases, and general casting methods such as die casting and lost wax casting are applied.
Claims (1)
残りがＣｕからなる鋳造用外装部品材料。1 Zn; 8-20%, Si 1-7%, Ni 1-6%,
Exterior component material for casting, the remainder of which is Cu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17180179A JPS5841332B2 (en) | 1979-12-28 | 1979-12-28 | Exterior parts materials for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17180179A JPS5841332B2 (en) | 1979-12-28 | 1979-12-28 | Exterior parts materials for casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5696043A JPS5696043A (en) | 1981-08-03 |
| JPS5841332B2 true JPS5841332B2 (en) | 1983-09-12 |
Family
ID=15929955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17180179A Expired JPS5841332B2 (en) | 1979-12-28 | 1979-12-28 | Exterior parts materials for casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5841332B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6186234U (en) * | 1984-11-12 | 1986-06-06 |
-
1979
- 1979-12-28 JP JP17180179A patent/JPS5841332B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6186234U (en) * | 1984-11-12 | 1986-06-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5696043A (en) | 1981-08-03 |
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