JPS6086231A - High-strength conductive copper alloy - Google Patents

Abstract

PURPOSE:To provide a high-strength conductive copper alloy low in cost and excellent in strength, springy characteristics and corrosion resistance, obtained by adding a specific amount of Zn, P, Sn, Al and other elements to Cu. CONSTITUTION:On a wt. basis, 10-40% of Zn, 0.005-0.070% of P, 0.005-1.0% of Sn and 0.05-1.0% of Al are added to Cu and one or more of B, Ni, Si, Fe, Pb, Co, CR, Mn, Te, In, Ti, Zr, Hf, Be, Mg, Ag, Cd, Ge, As and Sb is further added in a range of 0.005-1.0% as the sum total to prepare a Cu-alloy. The cast ingot of this Cu-alloy is hot rolled and, after surface cutting, cold rolling is succeedingly applied to the rolled alloy to form a thin plate which is, in turn, annealed and subjected to final rolling and heat treatment at 200 deg.C for 1hr. By this method, a high-strength conductive copper alloy excellent in strength, springy characteristics and corrosion resistance suitable for spring for electric machinery, spring for a measuring instrument, a switch or a connector can be prepared inexpensively.

Description

【発明の詳細な説明】 本発明は高力で優れたバネ特性を有し、かつ耐食性に優
れた安価なバネ用銅合金に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inexpensive copper alloy for springs that has high strength, excellent spring properties, and excellent corrosion resistance.

従来、丹鉗及び黄鉤は、その優れた加工性並びに低コス
ト材料であるため、電子、電気部品材料としても、電気
機器用バネ、計測器用バネ。Traditionally, Tanpin and Yellow Hook have been used as materials for electronic and electrical parts, such as springs for electrical equipment and springs for measuring instruments, due to their excellent workability and low cost.

スイッチ、コネクター等に広範囲に使用されていた。し
かし近年１機器、装置の小型化、軽量化により更に強度
、バネ特性の向上が強く要望されており、また耐食性が
劣るため、耐食性の向上に対しても強い要望がある。It was widely used for switches, connectors, etc. However, in recent years, due to the miniaturization and weight reduction of devices and equipment, there has been a strong demand for further improvements in strength and spring characteristics, and since corrosion resistance has been poor, there has also been a strong demand for improved corrosion resistance.

本発明はかかる点に錯みなされたもので、安価で１強度
、バネ特性に優れ、耐食性にも優れた銅合金を提供しよ
うとするものである。The present invention has been made in consideration of these points, and aims to provide a copper alloy that is inexpensive, has excellent strength, spring properties, and corrosion resistance.

本発明の銅合金は、亜鉛１０〜４０　ｗｔ％　、りん０
００５〜０．０７０ｗｔ係、錫０．０５〜１．　Ｏｗｔ
係、アルミニウム０．０５〜ｔ　ｏ　ｗｔｌを含み、さ
らにホウ素０．００５〜０、Ｉ　ｗｔ係、ニッケル０．
００５〜１．ＯＷｔ係。The copper alloy of the present invention contains 10 to 40 wt% zinc and 0 phosphorus.
005~0.070wt, tin 0.05~1. Owt
Contains 0.05-0 wtl of aluminum, 0.005-0 wtl of boron, 0.0 wtl of boron, 0.0 wtl of nickel.
005-1. OWt staff.

ケイ素０．００５〜１．０ｗｔ％、鉄０．００５〜１．
０ｗｔ％、鉛０００５〜０．３ｗｔ易、コバルト０００
５〜１．０ｗｔ％、クロム０．００５〜ｉ、０ｗｔ％、
マンガンＱ、００５〜１．０ｗｔ嗟。Silicon 0.005-1.0 wt%, iron 0.005-1.
0wt%, lead 0005~0.3wt%, cobalt 000
5-1.0wt%, chromium 0.005-i, 0wt%,
Manganese Q, 005~1.0wt.

テルル０．００５〜ｔＯｗｔｑｂ、インジウム０．００
５〜１．Ｏｗｔ’Ｚ　、チタｙ　０．００５〜１．Ｏｗ
ｔｌ　、ジルコニウム０００５〜１．０ｗｔ％、ハフニ
ウムα００５〜１．０ｗｔ％。Tellurium 0.005~tOwtqb, Indium 0.00
5-1. Owt'Z, Chita y 0.005-1. Ow
tl, zirconium 0005-1.0 wt%, hafnium α005-1.0 wt%.

ベリリウムＱ、Ｏ０５〜ｔｏｗｔ係、マグネシウム０．
００５〜１．０ｗｔ％、銀０．００５〜ｔＯｗｔ係、カ
ドミウム０．００５−　ｔ　ｏ　ｗｔ４　、ゲルマニウ
ムＱ、ＯＱ　５−１．Ｏｗｔｌ　、ヒ累α００５〜０．
１ｗｔ幅、アンチモンＱ、００５〜α１　ｗｔφの内何
れか１種又は２種以上を合計α００５〜２、　Ｏｗｔｌ
含み、残部銅及び不可避的な不純物から々る高力導電銅
合金に関するものである。Beryllium Q, O05~towt, magnesium 0.
005-1.0wt%, silver 0.005-towt, cadmium 0.005-towt4, germanium Q, OQ 5-1. Owtl, Hi cumulative α005~0.
1wt width, antimony Q, any one or two or more of 005~α1 wtφ in total α005~2, Owtl
The present invention relates to a high strength conductive copper alloy containing the remainder copper and unavoidable impurities.

次に本発明合金の各成分元素の限定理由について述べる
ことにする。銅と亜鉛は本発明合金の基本材料となるも
ので、加工性１根板的強度に優れているとともに熱伝導
性にも優れている。Next, the reason for limiting each component element of the alloy of the present invention will be described. Copper and zinc are the basic materials of the alloy of the present invention, and have excellent workability and strength in terms of base plate, as well as excellent thermal conductivity.

亜鉛含有量を１０〜４０　ｗｔ４とする理由は、亜鉛含
有量が１０　ｗｔ％未満では強度が低く、亜鉛含有量が
４０　ｗｔ９１６をこえるとβ相の析出が多量となり、
材料性質が安定しなくなるためである。The reason why the zinc content is set to 10 to 40 wt% is that if the zinc content is less than 10 wt%, the strength will be low, and if the zinc content exceeds 40 wt%, a large amount of β phase will precipitate.
This is because the material properties become unstable.

りんの含有量を０００５〜０．０７０ｗｔ％とする理由
は、りん含有量がＯ，ＯＯ５ｗｔ％未満では強度の向上
が認められず、耐食性の改善も期待できない。逆にシん
含有量が０．０７０　ｗｔｌをこえると導電性の低下及
び粒界腐食が発生し易くなるためである。錫含有量を１
１０５〜１．　Ｏｗｔ係とする理由は、錫含有量が０．
０５ｗｔ’ｊ未満では強度、バネ特性の向上が認められ
ず、錫含有量が１．　Ｏｗｔｌをこえると導電性の低下
が著しくなるためである。アルミニウム含有量を００５
〜ｔ　Ｏｗｔｌとする理由は、アルミニウム含有分が０
．０５　ｗｔ％未満では強度、バネ特性の向上が認めら
れず。The reason why the phosphorus content is set to 0005 to 0.070 wt% is that if the phosphorus content is less than 5 wt% of O, OO, no improvement in strength is observed and no improvement in corrosion resistance can be expected. On the other hand, if the phosphor content exceeds 0.070 wtl, the conductivity decreases and intergranular corrosion tends to occur. Tin content 1
105-1. The reason why it is classified as Owt is that the tin content is 0.
If the tin content is less than 0.05wt'j, no improvement in strength or spring properties will be observed. This is because when the temperature exceeds Owtl, the conductivity decreases significantly. Aluminum content 005
The reason for ~t Owtl is that the aluminum content is 0.
．． If the amount is less than 0.05 wt%, no improvement in strength or spring properties is observed.

アルミニウム含有量が１．　Ｏｗｔｌをこえると加工性
が低下し、導電性の低下も著しく々るためでおる。ホウ
素、ニッケル、ケイ素、鉄、鉛、コバルト、クロム、マ
ンガン、テルル、インジウム、チタン、ジルコニウム、
ハフニウム、ベリリウム、マグネシウム、銀、カドミウ
ム、ゲルマニウム、ヒ素、アンチモンからなる群より選
択された１種又は２種以上の含有量の総計を０．００５
〜２．０ｗｔ％とする理由は、ｏ、ｏ０５ｗｔφ未満で
は強度、バネ特性の向上が認められず、２，０ｗｔ４を
こえると導電性の低下と半田付は性の低下が著しくなる
ためである。Aluminum content is 1. This is because when the value exceeds Owtl, the workability decreases and the conductivity decreases significantly. Boron, nickel, silicon, iron, lead, cobalt, chromium, manganese, tellurium, indium, titanium, zirconium,
The total content of one or more selected from the group consisting of hafnium, beryllium, magnesium, silver, cadmium, germanium, arsenic, and antimony is 0.005
The reason for setting the content to 2.0 wt% is that if the content is less than o, o05wtφ, no improvement in strength or spring characteristics will be observed, and if it exceeds 2.0wt4, the conductivity and soldering properties will be significantly reduced.

次に本発明の詳細な説明する。Next, the present invention will be explained in detail.

実施例 鎮１表に示した組成の合金を溶解し、厚さ３０ｍの鋳塊
を得た。次に鋳塊を約７００℃で熱間圧延し、厚さａｏ
ｕ＋ｎにした後２表面を面間する。そして冷間圧延で厚
さ１，０癲にした後。Example 1 An alloy having the composition shown in Table 1 was melted to obtain an ingot with a thickness of 30 m. Next, the ingot is hot rolled at about 700℃ to a thickness of ao
After making u+n, the two surfaces are separated. After cold rolling to a thickness of 1.0 mm.

７５０℃で５分間の焼鈍を行い、最終圧延で厚さα５麺
とした。この試料を２００℃で１時間の熱処理を行い、
引張強さ、バネ限界値、バネ疲労試駆及び電気伝導度を
測定し、第１表の結果を得た。Annealing was performed at 750° C. for 5 minutes, and final rolling was performed to obtain noodles with a thickness of α5. This sample was heat treated at 200°C for 1 hour,
Tensile strength, spring limit value, spring fatigue test run, and electrical conductivity were measured, and the results shown in Table 1 were obtained.

この表よりわかるように本発明合金は強度。As can be seen from this table, the alloy of the present invention has a high strength.

バネ特性とも丹銅、黄銅よりはるかに向上している。The spring properties are also much improved compared to red copper and brass.

次に本発明合金の耐食性について述べる。供試材をアセ
トンで十分に超音波洗浄した後。Next, the corrosion resistance of the alloy of the present invention will be described. After thorough ultrasonic cleaning of the test material with acetone.

、ＴＩＳ　Ｚ　２３７１塩水噴霧試鹸方法に基づき、４
８時間の試験を行い、第２表の結果を得た。, based on TIS Z 2371 salt spray saponification method, 4
The test was conducted for 8 hours and the results shown in Table 2 were obtained.

この表かられかるように本発明合金は、丹銅。As can be seen from this table, the alloy of the present invention is red copper.

黄銅よりも耐食性に優れていることがわかる。It can be seen that it has better corrosion resistance than brass.

以上のように本発明合金は丹畑、黄銅にくらべ強度、バ
ネ特性、耐食性の全１に優れた銅合金である。従って１
本発明合金を丹銅、黄銅に代替して電気機器用バネ、計
測器用バネ、スイッチ、コネクター等に使用することに
より１機器の小型化、軽量化及び信頼性の向上をはかる
ことが可能である。As described above, the alloy of the present invention is a copper alloy that is superior in strength, spring characteristics, and corrosion resistance compared to Tanbata and brass. Therefore 1
By using the alloy of the present invention in place of red copper or brass in springs for electrical equipment, springs for measuring instruments, switches, connectors, etc., it is possible to reduce the size, weight, and improve the reliability of a single device. .

Claims (1)

【特許請求の範囲】[Claims] （１）　亜鉛１０〜４０ｗｔ係、りん０．００５〜０．
０７０ｗｔ係。 錫０．０５〜１．　Ｏｗｔ係、アルミニウム０．０５〜
１、　Ｏｗｔ係を含み、さらにホウ素ｏ、　ｏ　ｏ　ｓ
〜０１ｗｔ％、ニッケルＣＬＯＯ５〜１．０　ｗｔ％　
、ケイ素０００５〜１．　Ｏｗｔ係、鉄０．００５〜１
゜Ｏｗｔ係、鉛０．　ＯＯ５〜ａ　３　ｗｔ曝、コバル
トｏ、ｏｏｓ〜ｉ、Ｏｗｔ係、クロムα００５〜１．Ｏ
ｗｔ係、マンガン０００５〜１．Ｏｗｔ’ｌ　。 テルル０．００５〜１．Ｏｗｔ係、インジウム０．００
５〜１．　Ｏｗｔ係、チタン０００５〜ｔｏｗｔ係、ジ
ルコニウム０００５〜１．Ｏｗｔ係、ハフニウムＯ，Ｏ
Ｏ５〜１．　Ｏｗｔ％　、ベリリウム０．００５−１．
Ｏｗｔ％　、　マグネシウム０００５〜１．Ｏｗｔ係、
銀０００５〜１．Ｏｗｔ’ｌ　、カドミウム０．００５
−１．Ｏｗｔ％　、ゲルマニウム０．００５〜１．Ｏｗ
ｔ係、ヒ素０．００５〜α１　ｗｔ係。 アンチモン０．００５〜０．ＩＷｔ係の内伺れカー１万
市又は２種以上を合計０．００５〜２．０ｗｔ９６含み
、残部銅及び不可避的な不純物からなる高力導電銅合金
。(1) Zinc 10-40wt, phosphorus 0.005-0.
070wt person. Tin 0.05-1. Owt section, aluminum 0.05~
1. Contains Owt, and also contains boron o, o o s
~01 wt%, nickel CLOO5~1.0 wt%
, silicon 0005-1. Owt section, iron 0.005~1
゜Owt section, lead 0. OO5~a3 wt exposure, cobalt o, oos~i, Owt exposure, chromium α005~1. O
wt staff, manganese 0005~1. Owt'l. Tellurium 0.005-1. Owt section, indium 0.00
5-1. Owt section, titanium 0005~towt section, zirconium 0005~1. Owt staff, hafnium O, O
O5~1. Owt%, beryllium 0.005-1.
Owt%, magnesium 0005-1. Mr. Owt,
Silver 0005-1. Owt'l, cadmium 0.005
-1. Owt%, germanium 0.005-1. Ow
t ratio, arsenic 0.005 to α1 wt ratio. Antimony 0.005-0. A high-strength conductive copper alloy containing 10,000 or more types of IWT or more in total of 0.005 to 2.0wt96, and the balance consisting of copper and unavoidable impurities.