JPH0468723B2 - - Google Patents
Info
- Publication number
- JPH0468723B2 JPH0468723B2 JP63109773A JP10977388A JPH0468723B2 JP H0468723 B2 JPH0468723 B2 JP H0468723B2 JP 63109773 A JP63109773 A JP 63109773A JP 10977388 A JP10977388 A JP 10977388A JP H0468723 B2 JPH0468723 B2 JP H0468723B2
- Authority
- JP
- Japan
- Prior art keywords
- silver
- alloy
- tin
- contact material
- electrical 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
- 239000000463 material Substances 0.000 claims description 32
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 22
- 229910052709 silver Inorganic materials 0.000 claims description 21
- 239000004332 silver Substances 0.000 claims description 21
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 12
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 229910052787 antimony Inorganic materials 0.000 claims 1
- 229910052793 cadmium Inorganic materials 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 229910052738 indium Inorganic materials 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 239000006104 solid solution Substances 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- 238000003466 welding Methods 0.000 description 9
- QCEUXSAXTBNJGO-UHFFFAOYSA-N [Ag].[Sn] Chemical compound [Ag].[Sn] QCEUXSAXTBNJGO-UHFFFAOYSA-N 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 241000353345 Odontesthes regia Species 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010953 base metal Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910017980 Ag—Sn Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- JVPLOXQKFGYFMN-UHFFFAOYSA-N gold tin Chemical compound [Sn].[Au] JVPLOXQKFGYFMN-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000898 sterling silver Inorganic materials 0.000 description 1
- 239000010934 sterling silver Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/023—Composite material having a noble metal as the basic material
- H01H1/0231—Composite material having a noble metal as the basic material provided with a solder layer
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Manufacture Of Switches (AREA)
- Contacts (AREA)
Description
【発明の詳細な説明】
この発明は、片面が内部酸化された電気接点材
にかかるものである。さらに詳細には、この発明
は、一面に銀がクラツドされた銀合金を内部酸化
した電気接点材料に関すものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrical contact material that is internally oxidized on one side. More particularly, the present invention relates to an electrical contact material made of internally oxidized silver alloy coated with silver on one side.
この種の電気接点材料として知られるところは
次の通りである。 The following are known electrical contact materials of this type.
高周波溶解炉にて溶解し、鋳型に鋳込んだ銀合
金のインゴツトの表面を機械切削で皮剥きした後
に、この皮剥きしたインゴツトの面に純銀板を加
熱圧接し、圧延して板とする。このように一面に
純銀がクラツドした銀合金の板を酸素雰囲気中で
内部酸化する。この酸化された板をポンチで打抜
いて、上記種類の電気接点材料をうる。上記した
内部酸化において、酸素は純銀中をパスするので
銀合金はその両面より内部酸化されることにな
る。即ち、上記の板は両画内部酸化される。かゝ
る両画酸化の場合、銀合金中の溶質金属の酸化物
の濃度は板の両面において最も高く、内部にいく
に従つて希簿になり、中心部においてはデプリー
ゾンとなる。この種の接点材はその純銀面に溶接
されて、純銀面と反対の面のみが接点面として使
用されることを考えると、該接点材の厚みの純銀
面側と反対側の約1/2〜1/3のみが耐アーク状と耐
溶着性に富んだ接点剤として使いうるにすぎず、
経済的でない。 After the surface of a silver alloy ingot is melted in a high-frequency melting furnace and cast into a mold and peeled by mechanical cutting, a pure silver plate is welded under heat and pressure to the peeled surface of the ingot and rolled into a plate. A silver alloy plate clad with pure silver on one surface is internally oxidized in an oxygen atmosphere. This oxidized plate is punched out to obtain an electrical contact material of the type described above. In the internal oxidation described above, since oxygen passes through pure silver, the silver alloy is internally oxidized from both sides. That is, the above board is internally oxidized on both sides. In the case of such double-sided oxidation, the concentration of the solute metal oxide in the silver alloy is highest on both sides of the plate, decreases as it goes inside, and becomes deprison in the center. Considering that this type of contact material is welded to the pure silver side and only the surface opposite to the pure silver side is used as the contact surface, approximately 1/2 of the thickness of the contact material on the side opposite to the pure silver side. Only ~1/3 can be used as a contact agent with high arc resistance and welding resistance.
Not economical.
このために、上記した種類の銀合金を片面より
酸化することが考えられる。この種の方法におい
ては、一対の銀合金板或は片をはり合わせて、そ
の側面を溶接にてシールした後に、酸素雰囲気中
にさらして内部酸化する。内部酸化後、これをは
り合せ面で切断して接点材を得る。この方法にあ
つては、確かに得られた接点材は外面より内面に
向つて単一な一方々向で徐々に銀母金中に選択酸
化された金属酸化物の濃度が減じるので接点材の
大半を耐溶着性の耐アーク性に富んだものとして
使えるが、その製作方法は煩雑で、しかも材料の
ロスが大きい欠陥がある。 For this purpose, it is conceivable to oxidize the above-mentioned type of silver alloy from one side. In this type of method, a pair of silver alloy plates or pieces are pasted together, their sides sealed by welding, and then exposed to an oxygen atmosphere for internal oxidation. After internal oxidation, this is cut at the bonding surface to obtain a contact material. In this method, it is true that the concentration of the selectively oxidized metal oxide in the silver base metal gradually decreases in one direction from the outer surface to the inner surface of the contact material obtained. Most of them can be used because they are highly resistant to welding and arcing, but their manufacturing methods are complicated and they have the disadvantage of causing large material loss.
この発明も、銀合金、特に銀−錫系合金を内部
酸化して接点面とするものであるが該接点面用銀
−錫系合金に裏張りされるものは、この発明にお
いては純銀ではなく、重量比で３％以上、好適に
は重量比で５％以上の錫と残部が銀からなる銀合
金であつて、錫を銀中で内部酸化するための補助
溶質金属、例えばビスマス等を含まない裏張り用
の銀合金である。該接点面用銀−錫系合金は内部
酸化可能な合金で、例えば錫３〜12重量％とこの
錫を銀中で内部酸化するための補助溶質金属とし
てのビスマスを0.01〜５重量％含む銀−錫系合金
である。一方、この接点面用銀−錫系合金に裏張
りされるのは、上述した通り３重量％以上、好適
には５重量％以上の錫と残部が銀からなる銀合金
であつて、内部酸化が困難か或は不可能である。 In this invention, a silver alloy, especially a silver-tin alloy, is internally oxidized to form a contact surface, but the material lined with the silver-tin alloy for the contact surface is not pure silver in this invention. , a silver alloy consisting of at least 3% by weight, preferably at least 5% by weight of tin, and the balance being silver, and containing an auxiliary solute metal such as bismuth for internal oxidation of tin in silver. There is no silver alloy for the lining. The silver-tin alloy for the contact surface is an internally oxidizable alloy, for example, silver containing 3 to 12% by weight of tin and 0.01 to 5% by weight of bismuth as an auxiliary solute metal for internally oxidizing the tin in silver. - It is a tin-based alloy. On the other hand, the silver-tin alloy for the contact surface is lined with a silver alloy consisting of 3% by weight or more, preferably 5% by weight or more of tin, and the balance being silver, as described above, and is internally oxidized. is difficult or impossible.
従つて、内部酸化不可能な銀−錫合金が裏張り
された前記した内部酸化可能な銀−錫系合金を内
部酸化するとき（両面酸化するときと云つてもよ
い）、酸素は内部酸化不可能な銀−錫合金の面よ
り接点材中の浸透拡散せず、内部酸化可能な銀−
錫系合金の面よりのみ接点材内部に浸透拡散する
ことになり、接点材は片面内部酸化されることに
なる。裏張りされた銀−錫合金は、既知の片面内
部酸化法と異つて、そのまゝ台金等へ溶接出来
る。 Therefore, when internally oxidizing the above-mentioned internally oxidizable silver-tin alloy lined with an internally non-oxidizable silver-tin alloy (also referred to as double-sided oxidation), oxygen is internally oxidizable. Silver that can be internally oxidized without penetrating and diffusing into the contact material from the surface of the tin alloy.
The metal will penetrate and diffuse into the contact material only from the surface of the tin-based alloy, and the contact material will be internally oxidized on one side. The lined silver-tin alloy can be welded directly to the base metal, unlike known single-sided internal oxidation methods.
本発明にあつては、接点面を薄くすることがで
きる点は自明である。また、この裏張りの銀−錫
合金は錫の含有量分だけ純銀のクラツドに比べて
銀を節約でき、しかも今迄のこの種の接点材の純
銀の裏張りにも優る利点がある。即ち、錫−場合
金は錫を含むために純銀よりも融点が低く溶着が
容易である。また、これは良好な電気抵抗を有す
るので、抵抗溶接にも適する。 In the present invention, it is obvious that the contact surface can be made thin. Moreover, the silver-tin alloy of this lining can save silver compared to a pure silver cladding by the amount of tin, and has an advantage over the sterling silver linings of this type of contact material to date. That is, since tin-gold contains tin, it has a lower melting point than pure silver and is easier to weld. It also has good electrical resistance and is therefore suitable for resistance welding.
更にまた、この発明の利点は、材料のスクラツ
プが出来ないことである。即ち、上述した如く内
部酸化された複合合金板は、所望の形状にポンチ
で打抜かれるが、その打抜き後のスクラツプは再
溶解して接点材の接点面の合金として再使用でき
る優れた効果を本発明を有するものである。この
場合、スクラツプに不足の組成分を加えて、再溶
解することが多い。 Furthermore, an advantage of the present invention is that scrapping of material is not possible. That is, the internally oxidized composite alloy plate as described above is punched into a desired shape, and the scrap after punching has the excellent effect of being remelted and reused as an alloy for the contact surface of the contact material. It has the present invention. In this case, the missing ingredients are often added to the scrap and redissolved.
以下に、この発明の実施例を記載する。 Examples of this invention will be described below.
Ag−Sn8.5％−Bi0.1％の約５Kgの合金インゴ
ツトを、この組成分を高周波溶解炉にて溶解し
て、鋳型に鋳込んでつくつた。このインゴツトの
表面を機械切削で皮剥きした後に、Ag−Sn8.5％
の合金板をインゴツトの皮剥きした面に油圧プレ
スで金型を約400℃に加熱して圧接し、これを２
mmの板に圧延した。この板を酸素雰囲気中で650
℃、72時間内部酸化した。この酸化された板を６
mm径のボンチで打抜いて直径６mm×厚さ２mmの電
気接点材を得た。 An alloy ingot of approximately 5 kg of Ag-Sn8.5%-Bi0.1% was produced by melting this composition in a high-frequency melting furnace and casting it into a mold. After peeling the surface of this ingot by mechanical cutting, it was made into Ag-Sn8.5%
An alloy plate of
Rolled into a mm plate. This board was heated to 650°C in an oxygen atmosphere.
℃ for 72 hours. This oxidized plate is 6
It was punched out using a mm-diameter punch to obtain an electrical contact material with a diameter of 6 mm and a thickness of 2 mm.
この電気接点材を垂直方向に切断して、その縦
断面を顕微鏡で観察したところ、Ag−Sn合金が
裏打ちされた反対の面から内部に向う一方々向で
錫が選択的に酸化されて均一に分散し、その内部
酸化された層の厚みは約1.3mmであつた。因みに、
純銀が裏張りされたAg−Sn8.5％−Bi0.1％の複
合板（厚さ２mm）を上と同様に内部酸化した接点
材を縦方向に切断して顕微鏡で観察したところ、
純銀と反対の接点上面から約0.7mmで溶質金属酸
化物が希簿なデプリートゾンの存在が認められ
た。 When this electrical contact material was cut vertically and its longitudinal section was observed under a microscope, it was found that tin was selectively oxidized uniformly in one direction, from the opposite side lined with Ag-Sn alloy to the inside. The thickness of the internally oxidized layer was approximately 1.3 mm. By the way,
When a pure silver-lined Ag-Sn8.5%-Bi0.1% composite plate (thickness 2 mm) was internally oxidized in the same way as above, the contact material was cut vertically and observed under a microscope.
The existence of a depletion zone in which the solute metal oxide is rare was observed approximately 0.7 mm from the top surface of the contact opposite to the pure silver.
なお、前記したボタン形状の電気接点材を打抜
いた後のスクラツプ板を、Ag−Sn8.5％−Bi0.1
％の合金インゴツトをつくるための組成分として
再使用した。 In addition, the scrap board after punching out the button-shaped electrical contact material described above was made of Ag-Sn8.5%-Bi0.1
It was reused as a component to make % alloy ingots.
上記の本発明になる電気接点材と、上述した純
銀がクラツドされた電気接点材について耐溶着性
とA.S.T.Mテストによる消耗量を試験した。耐
溶着試験は電圧（D.C）240V；初期電流（コン
デンサー電源からの放流電流）7000A；接触圧力
200ｇの条件で行なつた。A.S.T.M.テストの試験
条件は電圧（A.C）200V；電流50A；接触圧力
400ｇ；開離力600ｇ；頻度70回／分である。 The electrical contact material of the present invention described above and the electrical contact material clad with pure silver described above were tested for welding resistance and amount of wear by ASTM tests. Welding resistance test voltage (DC) 240V; initial current (discharge current from capacitor power supply) 7000A; contact pressure
It was carried out under the condition of 200g. ASTM test conditions are voltage (AC) 200V; current 50A; contact pressure
400g; separation force 600g; frequency 70 times/min.
両接点材とも、耐溶着試験において、20サイク
ル迄は溶着はみられなかつたが、試験サイクルを
増すと、上述の純銀がクラツドされた電気接点材
に先ず溶着が生じた。また、消耗量試験において
は、両接点材とも開閉回数50000回でその消耗量
は約20mgであつたが開閉回数を更に増すと消耗量
は本発明の接点材に比べて純銀がクラツドされた
電気接点材において増えた。 In both contact materials, no welding was observed in the welding resistance test up to 20 cycles, but as the test cycles were increased, welding first occurred in the electrical contact material clad with pure silver. In addition, in the wear test, both contact materials showed that the wear amount was about 20 mg after 50,000 opening and closing times, but when the number of opening and closing times was further increased, the amount of consumption was lower than that of the contact material of the present invention. Increased in contact materials.
従つて、上記した本発明の接点材の厚みを純銀
がクラツドされた電気接点材と同じ２mmとした
が、その厚みを減じうることが分る。これは、貴
金属の使用量の節約を接点をよりコンパクトにし
うることになる。 Therefore, although the thickness of the above-mentioned contact material of the present invention was set to 2 mm, which is the same as that of the electrical contact material clad with pure silver, it is understood that the thickness can be reduced. This can save precious metal usage and make the contacts more compact.
Claims (1)
ス0.01〜５重量％を含む銀合金の一面に３重量％
以上の錫と残部銀とからなる銀合金がクラツドさ
れた複合材を内部酸化した電気接点材で、第１に
述べた銀合金が接点面をなし、第２に述べた銀合
金が接点台金への接点面をなす電気接点材。 ２ 前記第１に述べた銀合金は更にCd、Cu、
Zn、Sb、Inのうちの一種或は複数を銀に固溶し
かつ内部酸化の進行を阻害しない量で含む特許請
求の範囲第１項記載の電気接点材。[Claims] 1. 3% by weight on one side of a silver alloy containing 3-12% by weight of tin and 0.01-5% by weight of bismuth as silver and solute metals.
This electrical contact material is made by internally oxidizing a composite material clad with a silver alloy consisting of tin and the remainder silver, in which the first mentioned silver alloy forms the contact surface and the second mentioned silver alloy forms the contact base. Electrical contact material that forms the contact surface for 2 The silver alloy mentioned in the first part further contains Cd, Cu,
The electrical contact material according to claim 1, which contains one or more of Zn, Sb, and In as a solid solution in silver and in an amount that does not inhibit the progress of internal oxidation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10977388A JPH01258320A (en) | 1988-05-02 | 1988-05-02 | One side internally oxidized electric contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10977388A JPH01258320A (en) | 1988-05-02 | 1988-05-02 | One side internally oxidized electric contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01258320A JPH01258320A (en) | 1989-10-16 |
| JPH0468723B2 true JPH0468723B2 (en) | 1992-11-04 |
Family
ID=14518861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10977388A Granted JPH01258320A (en) | 1988-05-02 | 1988-05-02 | One side internally oxidized electric contact |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01258320A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140253281A1 (en) * | 2011-07-06 | 2014-09-11 | Tokuriki Honten Co., Ltd. | Electrode Material for Thermal Fuses, Manufacturing Method Therefor and Thermal Fuse Comprising the Same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50110098A (en) * | 1974-02-12 | 1975-08-29 | ||
| JPS5473274A (en) * | 1977-11-25 | 1979-06-12 | Tanaka Precious Metal Ind | Preparation of electric contact material |
| JPS5524954A (en) * | 1978-08-11 | 1980-02-22 | Chugai Electric Ind Co Ltd | Improved electric contact material of ag-sn-bi bas alloy internally oxidation |
-
1988
- 1988-05-02 JP JP10977388A patent/JPH01258320A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50110098A (en) * | 1974-02-12 | 1975-08-29 | ||
| JPS5473274A (en) * | 1977-11-25 | 1979-06-12 | Tanaka Precious Metal Ind | Preparation of electric contact material |
| JPS5524954A (en) * | 1978-08-11 | 1980-02-22 | Chugai Electric Ind Co Ltd | Improved electric contact material of ag-sn-bi bas alloy internally oxidation |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01258320A (en) | 1989-10-16 |
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