JPS6026622A - Manufacture of electrical contact material - Google Patents
Manufacture of electrical contact materialInfo
- Publication number
- JPS6026622A JPS6026622A JP58134083A JP13408383A JPS6026622A JP S6026622 A JPS6026622 A JP S6026622A JP 58134083 A JP58134083 A JP 58134083A JP 13408383 A JP13408383 A JP 13408383A JP S6026622 A JPS6026622 A JP S6026622A
- Authority
- JP
- Japan
- Prior art keywords
- oxide
- sintered
- electrical contact
- resistance
- contact material
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- 229910052709 silver Inorganic materials 0.000 claims abstract description 4
- 229910052738 indium Inorganic materials 0.000 claims description 3
- 239000011812 mixed powder Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 7
- 238000003466 welding Methods 0.000 abstract description 7
- 238000005245 sintering Methods 0.000 abstract description 5
- 229910052759 nickel Inorganic materials 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract 2
- 229910017937 Ag-Ni Inorganic materials 0.000 abstract 1
- 229910017984 Ag—Ni Inorganic materials 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000843 powder Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910017727 AgNi Inorganic materials 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Landscapes
- Manufacture Of Switches (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は電気接点材料の製造方法、特に、耐溶着性に優
れた無害な電気接点用焼結材料の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing an electrical contact material, and in particular to a method for producing a harmless sintered material for electrical contacts with excellent welding resistance.
従来、中負荷領域の電気接点材料として汎用されている
Ａ ｇＣｄ Ｏ系焼結材料は、優れた接点性能を有して
いるが、有害なＣｄを材料とするためその製造工程およ
び使用中にＣｄを含有する粉塵となって公害を発生する
恐れがあり、しかもＡ８含有量が多い為コストが高いと
いう欠点もあった。Conventionally, A gCd O-based sintered materials, which have been widely used as electrical contact materials in the medium load range, have excellent contact performance, but because they are made of harmful Cd, Cd is released during the manufacturing process and during use. There is a risk that it will become dust containing A8 and cause pollution, and furthermore, it has the disadvantage that the cost is high because of the high A8 content.
池方、Ｃｄを含有しない無害な電気接点材料としてＡｇ
Ｎｉ系焼結材料が実用化されているか、このＡｇＮｉ系
焼結拐料はＡｇＣｄ０系のものに比へ耐溶着性において
劣るという問題があった。Ikegata, Ag as a harmless electrical contact material that does not contain Cd
Although Ni-based sintered materials have been put into practical use, this AgNi-based sintered material has a problem in that it is inferior to AgCd0-based materials in terms of welding resistance.
本発明は、従来のＡ、ＨＮｉ系焼結焼結材の欠点である
耐溶着性を向上させると共に、Ａ ８Ｃｄ Ｏ光電気接
点材料と同等以上の接点性能を有する安価な電気接点材
料を製造できるようにすることを目的とするものである
。The present invention improves the welding resistance, which is a drawback of conventional A, HNi-based sintered sintered materials, and makes it possible to produce an inexpensive electrical contact material that has contact performance equivalent to or better than that of A8CdO photoelectric contact materials. The purpose is to do so.
本発明の要旨は、Ｎｉ １０〜３０％、Ｉｎ酸化物 Ｉ
ｎ換算で１．７〜５％、残部実質的にＡεからなる混合
粉末を加圧成形した後、中性もしくは還元性雰囲気中で
焼結させるとともに、前記酸化物の少なくとも一部を還
元して、ノ＼ｇおよびＮｌ中に金属の形態で固溶させる
ことを特徴とする電気接点材料の製造方法にある。The gist of the present invention is that Ni 10-30%, In oxide I
After pressure-molding a mixed powder consisting of 1.7 to 5% in terms of n and the remainder substantially consisting of Aε, it is sintered in a neutral or reducing atmosphere, and at least a portion of the oxide is reduced. , No\g and Nl as a solid solution in the form of a metal.
本発明に係る電気接点用焼結材料の成分組成を前記のよ
うに限定した理由について説明すると、Ｎｉｌ；ｌｉ’
ｌ消耗性を向」ニさせるために添加されるが、Ｎ１か１
０％未）ｊモではその効果が得られず、また３０％を越
えると加］二性か悪くなるので、１（）〜３０％とした
。また、Ｉｎ酸化物は接触抵抗を安定させ、かつアーク
を減少させるために添加されるもので、その添加量が金
属Ｉｎに換算して１゜７％未満ではその添加効果か充分
に達成されず、５％を越えると接触抵抗が増大し耐溶着
性が悪くなるので１．７〜５％とした。The reason why the composition of the sintered material for electrical contacts according to the present invention is limited as described above is as follows:
It is added to improve consummability, but N1 or 1
If the amount is less than 0%, the effect cannot be obtained, and if it exceeds 30%, the bisexuality becomes worse, so it was set at 1% to 30%. In addition, In oxide is added to stabilize contact resistance and reduce arcing, and if the amount added is less than 1.7% in terms of metal In, the effect of the addition will not be fully achieved. If it exceeds 5%, the contact resistance will increase and the welding resistance will deteriorate, so it is set at 1.7 to 5%.
前記成分組成の本発明方法に係る電気接点＋４料は、従
来のＡＢＮｉ系焼結材料に比べ耐溶着性か大幅に改善さ
れ、ＡＨＣｃｌＯ系焼結祠料と同等の耐溶着性を示す。The electrical contact +4 material according to the method of the present invention having the above-mentioned composition has significantly improved adhesion resistance compared to conventional ABNi-based sintered materials, and exhibits adhesion resistance equivalent to that of AHCClO-based sintered materials.
また、接触抵抗および耐消耗性に関しては、Ａ３Ｎｉ系
のものと同等であり、Ａ ｇ Ｃｄ Ｏ系のものに比べ
て弱干劣るが実用」−問題となる程度の差ではない。し
かも、本発明方法に係る電気接点材料は、Ａ ｇ Ｃｄ
Ｏ系焼結材料に比ベノ＼ｇ含有量を低減でとるので安
価に製造することかでと、有害なＣｄを含有しないので
公害発生の原因となることかない。In addition, in terms of contact resistance and abrasion resistance, they are equivalent to those of the A3Ni type, and are slightly inferior to those of the AgCdO type, but the difference is not significant enough for practical use. Moreover, the electrical contact material according to the method of the present invention is A g Cd
It has a lower Beno\g content compared to O-based sintered materials, so it can be manufactured at low cost, and it does not contain harmful Cd, so it does not cause pollution.
前記電気接点材料は、本発明によれば、原料としてＡ８
、Ｎ１およびＩｎ酸化物の各微粉末を用ν・、これらを
所定比で配合し、加圧成形後、分１’ｌ’ｌ’アンモニ
アガス＜Ｎ、＋Ｉ１．）などの還元性雰囲気中′７００
・〜８ｏ （１’Ｃで１〜２０時間焼結する方法により
製造されるが、これは原料としてｌＮ８、Ｎｉおよυ゛
金属Ｉｎを用いた場合に比べ、焼結過程で前記酸化物の
少なくとも一部が還元されてＮｉ中に固溶し、Ｎｉ合金
の微細化加工か行なわれるため、より微細なＮｉ合金粒
イの）Ｎ８で）・リツクス・＼の分散を得ることができ
るからである。なお、ｊ雲足されたＩｎの一部はＡＢ中
にも固溶し、純Ａ８に比べて若干抵抗を増大さぜるか、
電気接点材料としζ特に問題となることはない。また、
焼結後、得られた焼結１本にサイジング、コイニングな
との再加工を施すのか好ましい。According to the invention, the electrical contact material is made of A8 as raw material.
, N1 and Indium oxide fine powders are mixed in a predetermined ratio, and after pressure molding, ammonia gas <N, +I1. ) in a reducing atmosphere such as '700
・～8o (Produced by sintering at 1'C for 1 to 20 hours, but this is because the oxides are removed during the sintering process, compared to when lN8, Ni and υ゛metal In are used as raw materials. At least a part of it is reduced and solid-solved in Ni, and the Ni alloy is refined, so it is possible to obtain a dispersion of finer Ni alloy grains. be. In addition, some of the added In may also form a solid solution in AB, slightly increasing the resistance compared to pure A8.
When used as an electrical contact material, ζ poses no particular problem. Also,
After sintering, it is preferable to perform reprocessing such as sizing and coining on the obtained sintered piece.
原料粉末としては、通常、Ｏ，］ ＝ ＋ ＋１３μ、
好ましく１土０．５〜２０μのものが′（吏月ｊで゛き
るか、これらは市販のものをそのまま使用すれは′より
・。The raw material powder is usually O,] = + +13μ,
Preferably, those with a weight of 0.5 to 20 microns per layer are suitable.
以下、本発明の実施例について説明［る。Examples of the present invention will be described below.
実施例
原料粉末を）＼ε（平均粒径：］、０８μ） ７０重量
％、Ｎｉ（平均粒径：２．２μ） ２５重量％、Ｉｎ２
０３（平均粒径：５μ） ５重量％（■１１換算）の割
合で・配合してボールミルにて均一に混合し、その混合
粉末を４ｔ／ｃ＋ｎ”の圧力下で直径２０ｍｍ、長さ３
０ｍｍに成形し、得られた成形体を還元性力゛ス雰囲気
（Ｎ、、 ＋１−１２ ）中７５０℃で２時間加熱し
て焼結させ電気接点用焼結体を得た。この焼結体を７
（’、１０−８００℃に加熱し、押出磯を用いて直径６
ｍｌの棒状体に成形した後、伸線ヘラグーにて加工し
て（４た接点をリレーに組み込み、供試品とした。Example raw material powder) \ε (average particle size: ], 08μ) 70% by weight, Ni (average particle size: 2.2μ) 25% by weight, In2
03 (average particle size: 5μ) at a ratio of 5% by weight (converted to ■11), mixed uniformly in a ball mill, and the mixed powder was milled under a pressure of 4t/c+n'' to a diameter of 20mm and a length of 3
The resulting molded body was heated and sintered at 750° C. for 2 hours in a reducing force atmosphere (N, +1-12) to obtain a sintered body for an electrical contact. This sintered body is 7
(', heated to 10-800℃ and extruded with a diameter of 6 mm.
After forming it into a rod-shaped body of 1 ml, it was processed using a wire drawing machine (4 contacts were assembled into a relay, and a test product was prepared.
比較例 １
原料として実施例で用いたＡｇとＣｄＯとの粉末を用い
、実施例と同様にしてＡ８ ］２２％Ｃｄからなる焼結
体を得て接点となし、これをリレーに組み込み供試品と
した。Comparative Example 1 Using the powders of Ag and CdO used in the examples as raw materials, a sintered body made of A8]22%Cd was obtained in the same manner as in the examples, used as a contact, and incorporated into a relay to make a sample. And so.
比較例 ２
原料として実施例で用いたＡ８およびＮｉの粉末を用い
、これらをＡｇ ７０％、Ｎｉ３（１％の重量比で混合
し、実施例と同様にしてＡｇＮｉ系焼結本を得て接点と
なし、これをリレーに組み込み供試品とした。Comparative Example 2 Using the A8 and Ni powders used in the examples as raw materials, they were mixed at a weight ratio of 70% Ag and 1% Ni3, and a sintered AgNi type book was obtained in the same manner as in the example to form contacts. This was incorporated into a relay and used as a sample.
比較例 ３
実施例で用いた原料粉末Ａ８およびＮｉを金属Ｉｎとと
もにＡｇ７（１％、Ｎｉ ２Ｓ％、Ｉｎ金属粉′（平均
粒径：５μ）５％の重量比で混合し実施例と同様にして
焼結用を得て接点となし、これをリレーに組み込み供試
品とした。Comparative Example 3 The raw material powder A8 and Ni used in the example were mixed with metal In at a weight ratio of Ag7 (1%, Ni 2S%, In metal powder' (average particle size: 5μ) 5%), and the mixture was prepared in the same manner as in the example. This was then sintered and used as a contact, which was then incorporated into a relay and used as a sample.
前記各実施例および比較例で得だ供試品について、下記
の条件で接触抵抗、耐消耗性および溶着特性を測定した
。それらの結果を表に示す。なお、耐消耗性については
３５万回開閉動作させた時、接７弘の接触力か５８以下
になったリレーの個数で゛表わしである。Contact resistance, abrasion resistance, and welding properties of the samples obtained in each of the Examples and Comparative Examples described above were measured under the following conditions. The results are shown in the table. The wear resistance is expressed as the number of relays whose contact force was 58 or less when opened and closed 350,000 times.
［試験条件１
供試品： リレー（２Ｃ）各５個
電圧： Ａ Ｃ２２（’ｌ Ｖ
電流：・ＩＡ
負荷二 抵抗負荷
接触カニ 初期２０〜３０ｇ
開閉頻度： ３０回／分
［表 １１
接触抵抗 耐消耗性 溶着寿゛命
（口１Ω） （個） （方間）
実施例 ４２ ２ ４３
比較例１ ４．０ １ ４５
比較例２ ７０ ２ ３８
比較例３ ４８ ２ ３９
表１に示す結果から明らかなように、本発明に係る電気
接点材料は、比較例２や比較例３のものに比べ耐溶着性
が大幅に改善され、比較例１のものと同等の特性を示し
ている。また、接触抵抗や耐消耗性については、比較例
１のものに比べてわずかに劣るものの、実用上あまり問
題とならない程度の差であることかわかる。[Test conditions 1 Samples: 5 relays (2C) each Voltage: A C22 ('l V Current: IA Load 2 Resistive load contact crab Initial 20-30 g Opening/closing frequency: 30 times/min [Table 11 Contact resistance resistance Consumability Welding life (mouth 1Ω) (pieces) (width) Example 42 2 43 Comparative example 1 4.0 1 45 Comparative example 2 70 2 38 Comparative example 3 48 2 39 It is clear from the results shown in Table 1 As shown, the electrical contact material according to the present invention has significantly improved adhesion resistance compared to those of Comparative Examples 2 and 3, and exhibits properties equivalent to those of Comparative Example 1. Although it is slightly inferior to that of Comparative Example 1 in terms of wear resistance and abrasion resistance, it can be seen that the difference is such that it does not pose much of a problem in practice.
特許出願人 立石電成株式会社Patent applicant: Tateishi Densei Co., Ltd.
Claims (1)
．７〜５％、残部実質的にＡｇからなる混合粉末を加圧
成形した後、中性もしくは還元性雰囲気中で焼結させる
とともに、前記酸化物の少なくとも一部を還元して、Ａ
ｇおよびＮｉ中に金属の形態で固溶させることを特徴と
する電気接点材料の製造方法。(1) NiH) ~30%, In oxide 1 in terms of In
．． After press-molding a mixed powder consisting of 7 to 5% Ag and the remainder substantially Ag, it is sintered in a neutral or reducing atmosphere, and at least a portion of the oxide is reduced.
1. A method for producing an electrical contact material, which comprises dissolving Ni in the form of a metal in g and Ni.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58134083A JPS6026622A (en) | 1983-07-21 | 1983-07-21 | Manufacture of electrical contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58134083A JPS6026622A (en) | 1983-07-21 | 1983-07-21 | Manufacture of electrical contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6026622A true JPS6026622A (en) | 1985-02-09 |
| JPH0474403B2 JPH0474403B2 (en) | 1992-11-26 |
Family
ID=15120002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58134083A Granted JPS6026622A (en) | 1983-07-21 | 1983-07-21 | Manufacture of electrical contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6026622A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62235442A (en) * | 1986-04-04 | 1987-10-15 | Tokuriki Honten Co Ltd | Electrical contact point material |
-
1983
- 1983-07-21 JP JP58134083A patent/JPS6026622A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62235442A (en) * | 1986-04-04 | 1987-10-15 | Tokuriki Honten Co Ltd | Electrical contact point material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0474403B2 (en) | 1992-11-26 |
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