JPH02274828A - Nickel silver having excellent hot workability - Google Patents
Nickel silver having excellent hot workabilityInfo
- Publication number
- JPH02274828A JPH02274828A JP9524789A JP9524789A JPH02274828A JP H02274828 A JPH02274828 A JP H02274828A JP 9524789 A JP9524789 A JP 9524789A JP 9524789 A JP9524789 A JP 9524789A JP H02274828 A JPH02274828 A JP H02274828A
- Authority
- JP
- Japan
- Prior art keywords
- nickel silver
- hot workability
- hot
- content
- silver
- 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.)
- Pending
Links
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000010956 nickel silver Substances 0.000 title claims abstract description 45
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 4
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 3
- 229910052759 nickel Inorganic materials 0.000 claims abstract 2
- 239000012535 impurity Substances 0.000 claims description 2
- 238000005098 hot rolling Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000956 alloy Substances 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 2
- 229910007567 Zn-Ni Inorganic materials 0.000 abstract 1
- 229910007614 Zn—Ni Inorganic materials 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical class 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000005482 strain hardening Methods 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910018605 Ni—Zn Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、熱間加工性の優れた洋白に関するものである
。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to nickel silver with excellent hot workability.
（従来技術とその問題点）
一般にＮｉ ５〜３０ｉｉｔ％、Ｚｎ ５〜３５ｗｔ％
、残部ＣｕよりなるＣｕ−Ｎｉ−Ｚｎ合金は洋白と呼ば
れ優れた強度、ばね特性、耐食性を有するため電気機器
及び電子機器の部品、あるいは洋食器として広く使用さ
れている。(Prior art and its problems) Generally Ni 5-30iit%, Zn 5-35wt%
The Cu-Ni-Zn alloy, which is made up of nickel silver with the remainder being Cu, is called nickel silver and has excellent strength, spring characteristics, and corrosion resistance, and is therefore widely used as parts of electrical and electronic equipment and Western tableware.
しかしながら洋白は熱間加工性が悪いため３〜５ＩＩ１
１の板厚まで熱間圧延で加工することは困難であり、専
ら冷間加工と焼鈍の繰り返しで製造されるため、必然的
に製品の高価格につながっている。However, since nickel silver has poor hot workability, 3-5II1
It is difficult to hot-roll the steel sheet to a thickness of 1.5 mm, and the product is manufactured exclusively by repeating cold working and annealing, which inevitably leads to high product prices.
即ち、洋白の鋳塊を熱間圧延すると圧延板の表面に大き
な亀裂を生じ、その後の圧延工程を不可能にする。また
洋白は加工硬化が大きいため中間焼鈍を多数回行なわね
ばならず、これが製品の工程を複雑化し、且つ製品価格
に著しい影響を及ぼしているものである。このため、例
えば特公昭６２−３２３２号公報に示されているように
熱間加工時の加工率や圧延温度を制約して熱間圧延を行
なう場合もあるが、製造条件に制約があり必ずしも充分
なものではない。That is, when a nickel silver ingot is hot-rolled, large cracks occur on the surface of the rolled plate, making the subsequent rolling process impossible. Further, since nickel silver is highly work hardened, intermediate annealing must be performed many times, which complicates the manufacturing process and has a significant impact on the product price. For this reason, as shown in Japanese Patent Publication No. 62-3232, for example, hot rolling is sometimes carried out by restricting the processing rate and rolling temperature during hot working, but this is not always sufficient due to restrictions on manufacturing conditions. It's not something.
（問題解決に関する知見）
洋白の熱間加工性を困難にしている原因は３００〜６０
０℃に脆化域があるためであり、 このことが洋白の製
造条件に大きな障害となっている。本発明はこのような
問題を解決することを課題とし、課題解決に関し鋭意研
究を行った結果、Ｂ、Ｃｒ、Ｃｏ、Ｍｇ、 Ｔｉ、Ｚｒ
、ＲＥＭのうち１種もしくは２種以上を適量添加するこ
とにより熱間加工性を改善し、製造条件を制約すること
なく熱間加工ができるという知見を得た。(Knowledge regarding problem solving) The reason why hot workability of nickel silver is difficult is 300-60
This is because there is a embrittlement region at 0°C, and this is a major obstacle to the manufacturing conditions of nickel silver. The present invention aims to solve such problems, and as a result of intensive research into solving the problems, B, Cr, Co, Mg, Ti, Zr
We have found that by adding appropriate amounts of one or more of REM, hot workability can be improved and hot working can be performed without restricting manufacturing conditions.
（発明の構成） 上記目的は、重量％で Ｎ１： ５〜３０％、 Ｚｎ：５〜３５％、 Ｂ：０．００１〜０．０５％。(Structure of the invention) The above purpose is in weight% N1: 5-30%, Zn: 5-35%, B: 0.001-0.05%.
Ｃｒ ： ０．００１〜０．０５％、
Ｃｏ ： ０．００１〜０．０５％、
Ｍｇ ： ０．００１〜０．０５％、
Ｔｉ ： ０．００１〜０．０５％、
Ｚｒ ： ０．００１〜０．００５％、ＲＥＭ ： ０
．００１〜ｏ、ｏｏｓ％のうち１種または２種以上を合
計０．００１〜０．０５％含有し、
Ｍｎ：８％以下を含有することができ、残部がＣｕと不
可避的不純物からなる熱間加工性の優れた洋白によって
達成される。Cr: 0.001~0.05%, Co: 0.001~0.05%, Mg: 0.001~0.05%, Ti: 0.001~0.05%, Zr: 0.001~ 0.005%, REM: 0
．． 001 to o, oos% in a total of 0.001 to 0.05%, Mn: 8% or less, and the remainder is Cu and inevitable impurities. This is achieved using nickel silver, which has excellent workability.
次に本発明において成分組成の限定理由を説明する。Next, the reasons for limiting the component composition in the present invention will be explained.
Ｎｉ ５〜３０％としたのは、Ｎｉ ５％未満では熱間
加工性に問題がないから、本発明の対象外であり。The reason why the Ni content is 5 to 30% is because there is no problem with hot workability if the Ni content is less than 5%, so it is outside the scope of the present invention.
Ｎｉ ３０％を越えると、 加工硬化が著しく大きくな
り、かつ高価なＮ１を多用しコストが高くなるためであ
る。This is because if the Ni content exceeds 30%, work hardening becomes significantly large and expensive N1 is used extensively, resulting in high costs.
２０５〜３５％としたのは、Ｚｎ ５％未満では電気部
品、電子部品として要求される強度及びばね特性が劣り
、かつ洋食器にふされしい洋白独特の色調が得られない
ためであり、 また、２０３５％を踵えると、β相が呪
われα＋βの２相組織となり、α単一相である洋白と本
質的に異なる合金になるためである。The reason why the Zn content is 205 to 35% is because if the Zn content is less than 5%, the strength and spring characteristics required for electrical and electronic components will be inferior, and the unique color tone of nickel silver suitable for Western tableware cannot be obtained. Moreover, if 2035% is applied, the β phase is cursed and becomes a two-phase structure of α+β, resulting in an alloy that is essentially different from nickel silver, which is a single α phase.
Ｂ、 Ｃｒ、 Ｃｏ、 Ｍｇ、 Ｔｉ、 Ｚｒ、 ＲＥ
Ｍは洋白の熱間加工性を改善するための添加元素であり
１本発明において重要な元素である。B, Cr, Co, Mg, Ti, Zr, RE
M is an additive element for improving the hot workability of nickel silver, and is an important element in the present invention.
・これらの元素のうちＢ 、 Ｃｒ、 Ｃｏ、 Ｍｇ、
Ｔｉはいずれも含有量が０．００１％未満では熱間加
工性の改善効果がない。また、含有量が０．０５％を越
えると合金中の介在物の量が増加し、製品の表面疵やメ
ツキ性低下の原因とな条一方、熱間加工性の向上とは逆
に、脆化現象を呈するようになる場合もある。・Among these elements, B, Cr, Co, Mg,
If the Ti content is less than 0.001%, there is no effect of improving hot workability. Furthermore, if the content exceeds 0.05%, the amount of inclusions in the alloy increases, causing surface flaws and poor plating properties of the product. In some cases, the phenomenon of oxidation may occur.
したがってＢ 、Ｃｒ、 Ｃｏ、 Ｍｇ、 Ｔｉの含有
量はいずれも０．００１〜０．０５％に限定する。Therefore, the contents of B, Cr, Co, Mg, and Ti are all limited to 0.001 to 0.05%.
ＺｒおよびＲＥＭは含有量が０．００１％未満では熱間
加工性の改善効果はない、また、含有量が０．００５％
を越えると低融点の第２相が晶出するようになるため、
８００℃より高温での延性が低下する。 このためＺｒ
およびＲＥＭの含有量は０．００１〜０．００５％に限
定する。Zr and REM have no effect on improving hot workability if the content is less than 0.001%, and if the content is less than 0.005%
If the temperature exceeds this, a second phase with a low melting point will begin to crystallize.
Ductility decreases at temperatures higher than 800°C. For this reason, Zr
And the content of REM is limited to 0.001 to 0.005%.
Ｍｎは脱酸剤としての不可避元素であるが、洋白の電気
抵抗を大幅に上昇させる効果があるため。Mn is an essential element as a deoxidizing agent, but it has the effect of significantly increasing the electrical resistance of nickel silver.
高い体積抵抗率を要求される場合には積極的に添加され
る。しかし、含有量が８％を越えると、加工性が低下す
るとともに耐食性も劣下するため、Ｍｎの含有量は８％
以下とする。It is actively added when high volume resistivity is required. However, if the Mn content exceeds 8%, the workability and corrosion resistance will deteriorate, so the Mn content should be 8%.
The following shall apply.
（発明の具体的開示）
熱間、加工性は３０ｋｇ１塊から切り出した平行部７Ｉ
ＩＩｍφＸ ２０ｎｏａの丸棒試験片による高温引張試
験（歪速度１／５ｅｅ）を行ない、破断後の断面収縮率
を測定して評価した。(Specific Disclosure of the Invention) Hot workability: Parallel portion 7I cut from a 30 kg block
A high-temperature tensile test (strain rate 1/5ee) was conducted using a round bar test piece of IImφX 20 noa, and the cross-sectional shrinkage rate after breakage was measured and evaluated.
第１図にＪＩＳ Ｃ７４５１相当の比較洋白と、それに
Ｂを添加した洋白（Ｂ含有量０．００５％）、およびＣ
ｒを添加した洋白（Ｃｒ含有量０．０１％）における破
断後の断面収縮率を示す。Figure 1 shows comparative nickel silver equivalent to JIS C7451, nickel silver to which B has been added (B content 0.005%), and C
The cross-sectional shrinkage rate after rupture of nickel silver (Cr content 0.01%) added with r is shown.
第２図に、ＪＩＳ Ｃ７４５１相当の比較洋白と、それ
にＣｏを添加した洋白（Ｃｏ含有量０．０１％）、およ
びＭｇを添加した洋白（Ｍｇ含有量０．００５％）にお
ける破断後の断面収縮率を示す。Figure 2 shows the results after fracture in comparison nickel silver equivalent to JIS C7451, nickel silver with Co added to it (Co content 0.01%), and nickel silver with Mg added (Mg content 0.005%). shows the cross-sectional shrinkage rate of
第３図に、 ＪＩＳ Ｃ７４５１相当の比較洋白と、
それにｒｉを添加した洋白（Ｔｉ含有量０．０１％）、
およびＣｒとＣｏを複合添加した洋白（Ｃｒ＋Ｃｏ含有
量０．０２％）における破断後の断面収縮率を示す。Figure 3 shows comparative nickel silver equivalent to JIS C7451,
Nickel silver with ri added to it (Ti content 0.01%),
and the cross-sectional shrinkage rate after rupture of nickel silver (Cr+Co content 0.02%) with a combination of Cr and Co added.
第４図に、 ＪＩＳ Ｃ７４５１相当の比較洋白と、
それにＺｒを添加した洋白（Ｚｒ含有量０．００２％）
、 およびＲＥＭを添加した洋白（１１ＥＭ含有量０．
００２％）における破断後の断面収縮率を示す。Figure 4 shows comparative nickel silver equivalent to JIS C7451,
Nickel silver with Zr added (Zr content 0.002%)
, and REM-added nickel silver (11EM content 0.
002%) is shown.
第５図に、ＪＩＳ Ｃ７７０１相当の比較洋白と、それ
にＴｉを添加した洋白（Ｔｉ含有量０．０２％）におけ
る破断後の断面収縮率を示す。FIG. 5 shows the cross-sectional shrinkage rates after fracture of comparison nickel silver equivalent to JIS C7701 and nickel silver to which Ti is added (Ti content: 0.02%).
比較洋白にみられる３００〜６００℃の脆化現象は、こ
れらいずれの元素を添加した洋白においても、改善され
ていることがわかる。It can be seen that the 300 to 600° C. embrittlement phenomenon observed in comparative nickel silver is improved in nickel silver to which any of these elements are added.
（実施例）
第１表に示す化学組成を有する本発明洋白、および比較
洋白を高周波溶炉で溶製し、厚さ１２０ｍ＋ｗ、幅２０
０ｍｍ、重量３００ｋｇの鋳塊を得た。これらの鋳塊を
７５０〜８５０℃に加熱したのち抽出し、板厚３ 、５
ｍｍ〜５ｎ＋ｍまで中途で加熱することなく、熱間圧延
を行なった。ただし、圧延中に割れが発生したものは、
その板厚で中止した。(Example) The present invention nickel silver having the chemical composition shown in Table 1 and the comparison nickel silver were melted in a high frequency blast furnace, and the thickness was 120 m + w and the width was 20 m.
An ingot with a diameter of 0 mm and a weight of 300 kg was obtained. These ingots were heated to 750 to 850°C and then extracted to give plate thicknesses of 3 and 5.
Hot rolling was carried out to a temperature of mm to 5n+m without heating midway. However, if cracks occur during rolling,
The project was canceled due to the thickness of the board.
熱間圧延効果は、第１表に示す通りである。The hot rolling effect is as shown in Table 1.
第１表から明らかなように、比較洋白である、Ｂ 、Ｃ
ｒ、 Ｃｏ、 Ｍｇ、 Ｔｉ、 Ｚｒ、 ＲＩＥＭ無添
加のもの、これらの元素の含有量が０．００１％未満の
もの、 およびこれらの元素の含有量が過剰なものはい
ずれも大きな割れが発生しており、健全なホットコイル
を製造できなかった。これに対して１本発明洋白におい
ては１割れは全く見られず、板厚３ 、５＋ｎｍ〜５ａ
＋ｍの良好なホットコイルが製造できた。As is clear from Table 1, comparative nickel silver, B and C
Large cracks occur in all of the following: those without r, Co, Mg, Ti, Zr, and RIEM, those containing less than 0.001% of these elements, and those containing excessive amounts of these elements. Therefore, it was not possible to produce a healthy hot coil. On the other hand, in the nickel silver of the present invention, no cracking was observed at all, and the plate thickness was 3,5+nm to 5a.
A good hot coil of +m could be manufactured.
（発明の効果）
本発明は従来の洋白の熱間加工性が著しく劣ることに鑑
み、 Ｂ 、 Ｃｒ、 Ｃｏ、 Ｍｇ、 Ｔｉ、 Ｚｒ
、 ＲＥＭの元素を適量添加することにより次の効果を
得ることができた。(Effects of the Invention) In view of the fact that the hot workability of conventional nickel silver is significantly inferior, the present invention provides the following materials: B, Cr, Co, Mg, Ti, Zr.
By adding an appropriate amount of REM elements, the following effects could be obtained.
熱間圧延条件を制約することなく、洋白の熱間圧延が行
なえるようになった。このため、熱間加工工程が簡略化
され、しかも熱間圧延を主体とした製造工程をとること
が可能となったことにより冷間加工工程の負担が減るた
め、冷間圧延の回数や中間焼鈍の回数を減らすことがで
き、製品価格を低下させることが可能となった。It is now possible to hot-roll nickel silver without restricting the hot-rolling conditions. For this reason, the hot working process is simplified, and the burden on the cold working process is reduced by making it possible to use a manufacturing process that mainly consists of hot rolling. This has made it possible to reduce the number of times and reduce the product price.
第１，２．３．４図は、洋白（ＪＩＳ Ｃ７４５１相当
材）の引張試験温度と断面収縮率の関係を示す図、第５
図は洋白（ＪＩＳ Ｃ７７０１相当材）の引張試験温度
と断面収縮率の関係を示す図。Figures 1 and 2.3.4 are diagrams showing the relationship between the tensile test temperature and cross-sectional shrinkage of nickel silver (material equivalent to JIS C7451), Figure 5
The figure shows the relationship between the tensile test temperature and cross-sectional shrinkage rate of nickel silver (material equivalent to JIS C7701).
Claims (1)
％含有し、 Ｍｎ：８％までを含有することができ、 残部がＣｕと不可避的不純物からなる熱間加工性の優れ
た洋白。[Claims] In weight%, Ni: 5-30%, Zn: 5-35%, B: 0.001-0.05%, Cr: 0.001-0.05%, Co: 0. 001-0.05%, Mg: 0.001-0.05%, Ti: 0.001-0.05%, Zr: 0.001-0.005%, REM: 0.001-0.005% A total of 0.001 to 0.05 of one or more of the following
Nickel silver with excellent hot workability, which can contain up to 8% Mn, with the balance being Cu and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9524789A JPH02274828A (en) | 1989-04-17 | 1989-04-17 | Nickel silver having excellent hot workability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9524789A JPH02274828A (en) | 1989-04-17 | 1989-04-17 | Nickel silver having excellent hot workability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02274828A true JPH02274828A (en) | 1990-11-09 |
Family
ID=14132427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9524789A Pending JPH02274828A (en) | 1989-04-17 | 1989-04-17 | Nickel silver having excellent hot workability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02274828A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013002247A1 (en) * | 2011-06-29 | 2013-01-03 | 三菱伸銅株式会社 | Silver-white copper alloy and method for manufacturing silver-white copper alloy |
| JP2021521325A (en) * | 2018-04-20 | 2021-08-26 | ヴィーラント ウェルケ アクチーエン ゲゼルシャフトＷｉｅｌａｎｄ−Ｗｅｒｋｅ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ | Copper-zinc-nickel-manganese alloy |
| JP7120697B1 (en) * | 2022-04-19 | 2022-08-17 | 嶋田金属株式会社 | Structures that can prevent adhesion of marine organisms |
-
1989
- 1989-04-17 JP JP9524789A patent/JPH02274828A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013002247A1 (en) * | 2011-06-29 | 2013-01-03 | 三菱伸銅株式会社 | Silver-white copper alloy and method for manufacturing silver-white copper alloy |
| JP5245015B1 (en) * | 2011-06-29 | 2013-07-24 | 三菱伸銅株式会社 | Silver-white copper alloy and method for producing silver-white copper alloy |
| KR101420070B1 (en) * | 2011-06-29 | 2014-07-17 | 미츠비시 마테리알 가부시키가이샤 | Silver-white copper alloy method for manufacturing silver-white copper alloy |
| AU2012276705B2 (en) * | 2011-06-29 | 2015-06-11 | Mitsubishi Materials Corporation | Silver-white copper alloy and method of producing silver-white copper alloy |
| US9353426B2 (en) | 2011-06-29 | 2016-05-31 | Mitsubishi Materials Corporation | Silver-white copper alloy and method of producing silver-white copper alloy |
| US9512507B2 (en) | 2011-06-29 | 2016-12-06 | Mitsubishi Materials Corporation | Silver-white copper alloy and method of producing silver-white copper alloy |
| JP2021521325A (en) * | 2018-04-20 | 2021-08-26 | ヴィーラント ウェルケ アクチーエン ゲゼルシャフトＷｉｅｌａｎｄ−Ｗｅｒｋｅ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ | Copper-zinc-nickel-manganese alloy |
| JP7120697B1 (en) * | 2022-04-19 | 2022-08-17 | 嶋田金属株式会社 | Structures that can prevent adhesion of marine organisms |
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