JP2823258B2 - Manufacturing method of electrical contact clad material for thin leaf spring - Google Patents
Manufacturing method of electrical contact clad material for thin leaf springInfo
- Publication number
- JP2823258B2 JP2823258B2 JP22584689A JP22584689A JP2823258B2 JP 2823258 B2 JP2823258 B2 JP 2823258B2 JP 22584689 A JP22584689 A JP 22584689A JP 22584689 A JP22584689 A JP 22584689A JP 2823258 B2 JP2823258 B2 JP 2823258B2
- Authority
- JP
- Japan
- Prior art keywords
- electrical contact
- clad
- leaf spring
- clad material
- electric contact
- 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 - Lifetime
Links
Landscapes
- Manufacture Of Switches (AREA)
- Metal Rolling (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、リレー、スイッチ、コネクター、ブラシ等
に用いられる薄板ばね用電気接点クラッド材の製造方法
に関する。Description: TECHNICAL FIELD The present invention relates to a method for producing an electric contact clad material for a thin leaf spring used for a relay, a switch, a connector, a brush and the like.
（従来の技術） 近年、電気、電子機器の高密度化、高性能化の要望に
対し、特にばね性に優れた材料として、BeCuのベース材
に貴金属又は貴金属合金の電気接点材をクラッドした薄
板ばね用電気接点クラッド材が要望されている。(Prior art) In recent years, in response to demands for higher density and higher performance of electric and electronic devices, a thin plate in which a noble metal or noble metal alloy electrical contact material is clad on a BeCu base material as a material with particularly excellent spring properties. There is a need for electrical contact cladding for springs.
従来、ベース材に電気接点材をクラッドする方法とし
ては、ベース材を非酸化性の雰囲気中で通電加熱等によ
り所望の温度に加熱し、温間又は熱間にて電気接点材を
ロール間の圧接によりクラッドし、圧延加工後、焼鈍等
の熱処理が施され、所定の板厚寸法に仕上げられてい
る。Conventionally, as a method of cladding an electric contact material on a base material, a base material is heated to a desired temperature by conducting current heating or the like in a non-oxidizing atmosphere, and the electric contact material is placed between rolls in a warm or hot state. After being clad by pressure welding, rolled, and subjected to heat treatment such as annealing, the sheet is finished to a predetermined thickness.
（発明が解決しようとする課題） ところで、BeCuの成分であるBeは非常に活性である
為、酸化し易く、通常の非酸化性雰囲気中でも電気接点
材とのクラッド性が阻害され、接合強度が低く不安定と
なる欠点があった。(Problems to be Solved by the Invention) By the way, Be, which is a component of BeCu, is very active, so it is easily oxidized, and the cladding property with the electric contact material is impaired even in a normal non-oxidizing atmosphere, and the bonding strength is reduced. There was a disadvantage that it was low and unstable.
またベース材に対する電気接点材の圧接時の熱影響で
ベース材の表面が荒れてばね性が損なわれ、使用時に折
れたり、接触抵抗が不安定となる欠点があった。Further, there is a disadvantage that the surface of the base material is roughened due to the thermal effect at the time of pressing the electric contact material against the base material, the spring property is impaired, the material is broken during use, and the contact resistance becomes unstable.
そこで本発明は、BeCuのベース材と電気接点材の接合
強度を高く安定させることができ、またベース材の表面
が荒れることが無く、ばね性が損なわれることの無い薄
板ばね用電気接点クラッド材の製造方法を提供しようと
するものである。Therefore, the present invention provides an electric contact clad material for a thin leaf spring which can stabilize the bonding strength between the base material of BeCu and the electric contact material at a high level, does not cause the surface of the base material to be roughened, and does not impair the spring property. It is intended to provide a method for producing the same.
（課題を解決するための手段） 上記課題を解決するための本発明の薄板ばね用電気接
点クラッド材の製造方法は、BeCuのベース材に電気接点
材を冷間中にてクラッドする薄板ばね用電気接点クラッ
ド材の製造方法に於いて、BeCuのベース材に溝加工によ
り両側縁に盛り上がり凸部を有する凹部を形成し、次に
凹部に電気接点材を挿入して冷間圧接にてクラッドし、
然る後加工率50％以上の圧延加工をすることを特徴とす
るものである。(Means for Solving the Problems) A method for manufacturing an electrical contact clad material for a thin plate spring according to the present invention for solving the above-mentioned problems is provided for a thin plate spring for cladding an electrical contact material on a BeCu base material in a cold state. In the method of manufacturing the electrical contact clad material, a recess having raised protrusions on both side edges is formed in the base material of BeCu by groove processing, and then the electrical contact material is inserted into the recess and clad by cold pressure welding. ,
It is characterized in that the rolling process is performed at a post-processing rate of 50% or more.
（作用） 上述の如く本発明の薄板ばね用電気接点クラッド材の
製造方法では、従来のように温間又は熱間で電気接点材
を予め通電加熱したベース材に圧接することなく、冷間
（室温）中で電気接点材をベース材に圧接してクラッド
する為、BeCu中のBeが酸化することが無い。また溝加工
により凹部を形成した際、その両側縁に盛り上がった凸
部が、50％以上の圧延加工により面一になる時凹部両側
面部を押圧して電気接点材の両側単部を拘止するので、
電気接点材は圧接と機械的拘止作用と相俟って接合強度
が著しく高く且つ安定するものである。(Operation) As described above, in the method of manufacturing the electrical contact clad material for a thin leaf spring according to the present invention, the electrical contact material is cold ( Since the electrical contact material is pressed against the base material and clad at room temperature), Be in BeCu does not oxidize. Also, when the concave portion is formed by the groove processing, when the convex portions protruding on both side edges thereof become flush with each other by 50% or more of the rolling process, the both side portions of the concave portion are pressed by pressing the both side portions of the electric contact material, and the both sides of the electric contact material are locked. So
The electric contact material has a remarkably high and stable bonding strength in combination with the press contact and the mechanical restraining action.
尚、電気接点材をベース材にクラッドした後、加工率
50％以上の圧延加工する理由は、50％未満だと圧潰不足
となり、接合強度が不十分となるからである。After the electrical contact material is clad on the base material,
The reason for performing the rolling process of 50% or more is that if it is less than 50%, the crushing will be insufficient, and the joining strength will be insufficient.
（実施例） 本発明の薄板ばね用電気接点クラッド材の製造方法の
実施例を図によって説明すると、先ず第１図ａに示す如
く幅30mm、厚さ0.8mmのBe−2.5〜3.0％Cuのフープ状ベ
ース材１の一側端（図において左側端）から10mmの位置
に、幅1.4mm、深さ0.35mmの凹部２を溝加工により長手
方向に形成すると同時に凹部２の両側縁に0.1mmの盛り
上がり凸部３を形成した。次に凹部２に幅1.37mm、総厚
0.45mmのAu−Ag10％（40μｍ）/Agのフープ状複合電気
接点材４を挿入し冷間中にて圧接して第１図ｂに示す如
く総厚0.6mmのフープ状インレイ型クラッド材料５を得
た。次いで圧延加工して第１図ｃに示す如く総厚0.1m
m、幅32mmで、Au−Ag10％（５μｍ）/Agの厚さ30μｍの
フープ状インレイ型電気接点クラッド材６を得た。(Embodiment) An embodiment of the method for producing an electric contact clad material for a thin plate spring of the present invention will be described with reference to the drawings. First, as shown in FIG. 1a, a Be-2.5 to 3.0% Cu having a width of 30 mm and a thickness of 0.8 mm is used. A recess 2 having a width of 1.4 mm and a depth of 0.35 mm is formed in the longitudinal direction at a position 10 mm from one side end (the left end in the figure) of the hoop-shaped base material 1 by groove processing, and at the same time, 0.1 mm is formed on both side edges of the recess 2. The raised convex portion 3 was formed. Next, width 1.37mm, total thickness in recess 2
A hoop-like composite electrical contact material 4 of 0.45 mm Au-Ag 10% (40 μm) / Ag is inserted and pressed in a cold state to form a hoop-like inlay clad material 5 having a total thickness of 0.6 mm as shown in FIG. I got Then rolled to a total thickness of 0.1m as shown in Fig. 1c.
Thus, a hoop-shaped inlay-type electric contact clad material 6 having a thickness of 30 μm and a thickness of Au-Ag 10% (5 μm) / Ag and a width of 32 mm was obtained.
一方、従来例を図によって説明すると、先ず第２図ａ
に示す如く前記実施例と同一寸法、同一材質のフープ状
ベース材１の一側端から（図において左側端）から10mm
の位置に、両側縁に盛り上がり凸部を有しない幅1.4m
m、深さ0.35mmの凹部２を溝加工により長手方向に形成
した。次に凹部２に前記実施例と同一寸法、同一材質の
フープ状電気接点材４を挿入し、H2100％雰囲気、750℃
の熱間中で圧接して第２図ｂに示す如く総厚0.6mmのフ
ープ状インレイ型クラッド材料５′を得た。次いで圧延
加工して第２図ｃに示す如く総厚0.1mm、幅31mmでAu−A
g10％（５μｍ）/Agの厚さ30μｍのフープ状インレイ型
電気接点クラッド材６′を得た。On the other hand, a conventional example will be described with reference to FIG.
As shown in the figure, 10 mm from one side end (left end in the figure) of the hoop-shaped base material 1 of the same dimensions and the same material as the above embodiment.
1.4m width without bulges on both sides
A recess 2 having a depth of 0.35 mm and a depth of 0.35 mm was formed in the longitudinal direction by groove processing. Then the embodiment the same dimensions in the recess 2, by inserting the hoop electrical contact material 4 made of the same material, H 2 100% atmosphere, 750 ° C.
2b to obtain a hoop-shaped inlay clad material 5 'having a total thickness of 0.6 mm as shown in FIG. 2b. Then, rolling was performed to obtain Au-A with a total thickness of 0.1 mm and a width of 31 mm as shown in FIG. 2c.
A hoop-shaped inlay-type electrical contact clad material 6 'having a thickness of 10% (5 μm) / Ag and a thickness of 30 μm was obtained.
然して実施例及び従来例のインレイ型電気接点クラッ
ド材のフープ状電気接点材の接合強度を測定し且つ外観
検査を行い、さらに90度折り曲げ後の剥離試験を行った
処、下記の表に示すような結果を得た。However, the bonding strength of the hoop-shaped electrical contact material of the inlay type electrical contact clad material of the example and the conventional example was measured and the appearance was inspected, and the peeling test after bending by 90 degrees was performed, as shown in the following table. Results were obtained.
上記の表で明らかなように従来例のインレイ型電気接
点クラッド材は、フープ状電気接点材の接合強度が低く
ばらつきが大きくて不安定であり、またベース材の表面
の肌荒れと変色があり、さらに90度折曲げ後の剥離試験
による不具合品が100個中23個もあったのに対し、実施
例のインレイ型電気接点クラッド材は、フープ状電気接
点材の接合強度が高くばらつきが小さくて安定してお
り、またベース材の表面の肌荒れと変色が全く無く、さ
らに90度折曲げ後の剥離試験による不具合品が100個中
全く無く、品質良好であることが判る。 As is clear from the above table, the conventional inlay type electric contact clad material has a low bonding strength of the hoop-shaped electric contact material, a large variation, and is unstable, and also has a rough surface and discoloration on the surface of the base material, In addition, there were 23 out of 100 defective products in the peeling test after bending at 90 degrees, whereas the inlay type electrical contact clad material of the example had a high hoop-like electrical contact material with high bonding strength and small variation. It is stable, has no surface roughness and discoloration on the surface of the base material, and has no defects in 100 pieces by a peeling test after bending at 90 degrees, indicating good quality.
（発明の効果） 以上の説明で判るように本発明の薄板ばね用電気接点
クラッド材の製造方法によれば、接点材の接合強度が高
く安定したしかもベース材の表面に肌荒れ、変色が無
く、ばね性が損なわれることのない品質良好な薄板ばね
用電気接点クラッド材を得ることができる。また従来の
ような熱間圧接による熱影響が無いので、張厚の薄いフ
ープ状電気接点材においてもBe、Cuなどが拡散すること
が無いので、接点特性が低下することが無い。(Effects of the Invention) As can be seen from the above description, according to the method for producing an electrical contact clad material for a thin leaf spring of the present invention, the contact strength of the contact material is high and stable, and the surface of the base material is free from surface roughness and discoloration. An electric contact clad material for a thin leaf spring having good quality without impairing the spring property can be obtained. In addition, since there is no thermal influence due to the hot pressing as in the related art, even in a hoop-shaped electrical contact material having a small thickness, there is no diffusion of Be, Cu, etc., so that the contact characteristics do not deteriorate.
第１図ａ乃至ｃは本発明の薄板ばね用電気接点クラッド
材の製造方法の工程を示す図、第２図ａ乃至ｃは従来の
薄板ばね用電気接点クラッド材の製造方法の工程を示す
図である。 １……ベース材、２……凹部、３……盛り上がり凸部、
４……電気接点材、６……電気接点クラッド材FIGS. 1a to 1c show the steps of a method for producing an electrical contact clad material for a thin leaf spring of the present invention, and FIGS. 2a to 2c show the steps of a conventional method for producing an electrical contact clad material for a thin leaf spring. It is. 1... Base material, 2... Recess, 3.
4 ... electric contact material, 6 ... electric contact clad material
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B21B 1/00 - 9/00 H01H 11/00 - 11/06──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) B21B 1/00-9/00 H01H 11/00-11/06
Claims (1)
クラッドする薄板ばね用電気接点クラッド材の製造方法
に於いて、BeCuのベース材に溝加工により両側縁に盛り
上がり凸部を有する凹部を形成し、次に凹部に電気接点
材を挿入して冷間圧接にてクラッドし、然る後加工率50
％以上の圧延加工をすることを特徴とする薄板ばね用電
気接点クラッド材の製造方法。1. A method of manufacturing an electric contact clad material for a thin plate spring in which an electric contact material is clad on a BeCu base material in a cold state, wherein the BeCu base material has grooves protruding on both side edges by groove processing. After forming a concave part, insert the electric contact material into the concave part and clad it by cold pressure welding.
%. A method for producing an electrical contact clad material for a thin leaf spring, wherein the material is rolled by at least 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22584689A JP2823258B2 (en) | 1989-08-31 | 1989-08-31 | Manufacturing method of electrical contact clad material for thin leaf spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22584689A JP2823258B2 (en) | 1989-08-31 | 1989-08-31 | Manufacturing method of electrical contact clad material for thin leaf spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0389420A JPH0389420A (en) | 1991-04-15 |
| JP2823258B2 true JP2823258B2 (en) | 1998-11-11 |
Family
ID=16835751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22584689A Expired - Lifetime JP2823258B2 (en) | 1989-08-31 | 1989-08-31 | Manufacturing method of electrical contact clad material for thin leaf spring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2823258B2 (en) |
-
1989
- 1989-08-31 JP JP22584689A patent/JP2823258B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0389420A (en) | 1991-04-15 |
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