JPS6026623A - Manufacture of electrical contact material - Google Patents
Manufacture of electrical contact materialInfo
- Publication number
- JPS6026623A JPS6026623A JP58134084A JP13408483A JPS6026623A JP S6026623 A JPS6026623 A JP S6026623A JP 58134084 A JP58134084 A JP 58134084A JP 13408483 A JP13408483 A JP 13408483A JP S6026623 A JPS6026623 A JP S6026623A
- Authority
- JP
- Japan
- Prior art keywords
- oxide
- electrical contact
- sintered
- contact material
- resistance
- 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 24
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000005245 sintering Methods 0.000 claims abstract description 7
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- 239000011812 mixed powder Substances 0.000 claims description 4
- 239000006104 solid solution Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 229910052709 silver Inorganic materials 0.000 abstract 2
- 229910017937 Ag-Ni Inorganic materials 0.000 abstract 1
- 229910017984 Ag—Ni Inorganic materials 0.000 abstract 1
- 230000003381 solubilizing effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 12
- 239000000843 powder Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 7
- 238000005299 abrasion 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
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Manufacture Of Switches (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
！ＸｇＣｄＯ系焼結材料は、優れた接点性能を有してい
るか、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、しがもＡｇ含有景が多い為コストか高いとい
う欠点もあった。Conventionally, it has been widely used as an electrical contact material in the medium load range! XgCdO-based sintered materials have excellent contact performance, but since they are made from harmful Cd, there is a risk of generating pollution due to the formation of Cd-containing dust during the manufacturing process and use. However, since it contains a lot of Ag, it also has the disadvantage of being expensive.
数カ、Ｃｄを含有しない無害な電気接点材料としてＡｌ
！Ｎｉ系焼結材料が実用化されているか、このノＸｇＮ
ｉ系焼結材料はＡ３Ｃｄ０系のものに比べ耐溶着性にお
いで劣るという問題かあった。Aluminum is used as a harmless electrical contact material that does not contain Cd.
! Is this Ni-based sintered material in practical use?
There was a problem that i-based sintered materials were inferior in welding resistance compared to A3Cd0-based materials.
本発明は、従来のＡｇＮｉ系焼結相料の欠点である耐溶
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」二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 AgNi-based sintered phase materials, and makes it possible to manufacture inexpensive electrical contact materials that have contact performance equivalent to or better than that of A8CdO photoelectric contact materials. The purpose is to
本発明の要旨は、Ｎｉ ｉ（’、１〜３（）％、Ｚｎ酸
化物 Ｚ＋＋換拌で１．°７〜１５％、残部実質的にＡ
Ｈ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、ＡＨ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
にある。The gist of the present invention is that Ni i(', 1-3()%, Zn oxide Z++ exchanged 1.°7-15%, the remainder substantially A
After pressure-molding a mixed powder consisting of H, sintering it in a neutral or reducing atmosphere and reducing at least a portion of the oxide to form a solid solution in AH and Ni in the form of metal. A method of manufacturing an electrical contact material is provided.
本発明に係る電気接点用１尭結材ヰ［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、Ｎｉは耐消
耗性を向上させるために添加されるか、Ｎ１が１０％未
満ではその効果が得られず、また３０％を越えると加工
性が悪くなるので、Ｊｏ−３０％とした。また、Ｚｎ酸
化物は耐溶着性に向」ニさせるために添加されるもので
、その添加量が金属Ｚｎ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、１５％を越えると加工
性が悪くなるので１．７〜１５％とした。The reason why the component composition of the 1-layer binder for electrical contacts according to the present invention is limited as described above is that Ni is added to improve the wear resistance, or if N1 is less than 10%, the composition is limited as described above. Since no effect could be obtained and workability deteriorated if it exceeded 30%, it was set to Jo-30%. In addition, Zn oxide is added to improve welding resistance, and if the amount added is less than 1.7% in terms of metal Zn, the effect of the addition will not be fully achieved; If it exceeds 1.7% to 15%, the processability deteriorates.
前記成分組成の本発明方法に係る電気接点材料は、従来
のＡｇＮｉ系焼結材料に比べ耐溶着性力伏幅に改善され
、ＡｇＣｃ３０系焼結材料と同等の耐溶着性を示す。ま
た、接触抵抗および耐消耗性に関しては、ＡＢＮｉ系の
ものと同等であり、Ａ ｇ Ｃｄ Ｏ系のものに比べて
弱千劣るが実用」二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、ＡｇＣｄ０系焼
結祠料に比べへ８含有量を低減できるので安価に製造す
ることができ、有害なＣｃｌを含有しないので公害発生
の原因となることがない。The electrical contact material according to the method of the present invention having the above-mentioned component composition has improved welding resistance and strain resistance compared to conventional AgNi-based sintered materials, and exhibits welding resistance equivalent to that of AgCc30-based sintered materials. Furthermore, in terms of contact resistance and abrasion resistance, it is equivalent to that of the ABNi-based material, and slightly inferior to that of the A.sub.g Cd O-based material, but the difference is not so great as to cause any practical problems. In addition, the electrical contact material according to the method of the present invention can be manufactured at a low cost because the content of 8 can be reduced compared to AgCd0-based sintered abrasive materials, and it does not contain harmful Ccl, which can cause pollution. There is no.
前記電気接点材料は、本発明によれば、原料としてＡｇ
、ＮｉおよびＺｎ酸化物の各微粉末を用い、これらを所
定比で配合し、加圧成形後、分解アンモニアガス（Ｎ、
十Ｈ２）などの還元性雰囲気中°７００〜３ ＋’）
０ ’Ｃで゛１〜２０時間焼結する方法により製−遺さ
れるが、これは原料としてＡ８、Ｎｉおよび金属Ｚｎ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Ｎｌ中に固溶し、Ｎ１合金の微細化加
工か行なわれるため、より微細なＮｉ合金粒子のＡｇマ
ドＩＪツクスへの分散を得ることがでとるからである。According to the present invention, the electrical contact material contains Ag as a raw material.
, Ni and Zn oxide fine powders are mixed in a predetermined ratio, and after pressure molding, decomposed ammonia gas (N,
In a reducing atmosphere such as 10H2) °700~3 +')
The oxide is manufactured by a method of sintering at 0'C for 1 to 20 hours, but compared to the case where A8, Ni and metal Zn are used as raw materials, at least a part of the oxide is removed during the sintering process. This is because Ni alloy particles are reduced and dissolved in Nl as a solid solution, and the N1 alloy is processed into finer particles, so that finer Ni alloy particles can be dispersed in the Ag matrix.
なお、還元さｊｔたＺ１＋の一７ｆｌｓｌよＡ８中にも
固溶し、純Ａ、に比べて若干抵抗を増大させるか、電気
接点材料として特に問題となることはない。また、焼結
後、得られた焼結体にサイソング、コイニングなどの再
抽」−を施すのか好ましい。Note that the reduced Z1+ also forms a solid solution in A8, causing a slight increase in resistance compared to pure A, or does not pose any particular problem as an electrical contact material. Further, after sintering, it is preferable to subject the obtained sintered body to re-drawing such as sizing and coining.
原料粉末としては、通常、０．１〜１０１μ、好ましく
は０．５〜２０μのものか使用で・きるか、これらは市
販のものをそのま主使用すればより）。As the raw material powder, powders having a particle size of 0.1 to 101 µm, preferably 0.5 to 20 µm may be used (or commercially available powders may be used as they are).
以下、本発明の実施例について説明する。Examples of the present invention will be described below.
実施例
原料粉末をノ＼８（平均粒径：１．Ｏ８μ） ７（）重
量％、Ｎｉ（平均粒径：２．２μ） ２０重置火、Ｚ
ｎ Ｏ（平均粒径：５μ） １０重量％（Ｚ１１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
合粉末をれ／ｃ１１１２の圧力下で直径２０＋ｎｍ、長
さ３０ｍｂ＋に成形し、得られた成形体を還元性ガス雰
囲気 （Ｎ２＋８２＞中７５０’Ｃｒ２時間加熱して焼
結させ電気接、α用焼結本を得た。この焼結体を７００
〜８（）０°Ｃに加熱し、押出（幾を用いて直径６１１
１１１１の棒状体に成形した後、伸線ヘッダー１こで加
工して得た接点をリレーに組み込み、供試品とした。Example raw material powder was heated to 8 (average particle size: 1.O8μ) 7 ()% by weight, Ni (average particle size: 2.2μ) 20 times, Z
n O (average particle size: 5μ) 10% by weight (Z11 conversion)
The mixed powder was mixed uniformly in a ball mill, and the mixed powder was molded to a diameter of 20+ nm and a length of 30 mb+ under a pressure of R/C1112, and the resulting molded body was placed in a reducing gas atmosphere (N2+82>750 'Cr was heated for 2 hours and sintered to obtain a sintered book for electrical connection and α.This sintered body was
Heat to ~8()0 °C and extrude (diameter 611 using
After molding into a rod-shaped body of No. 1111, the contacts were processed using a wire drawing header and assembled into a relay to prepare a sample.
比較例 １
原料として実施例で用いたＡ５とＣｄＯとの粉末を用い
、実施例と同様にしてＡｇ−１２％ＣｄＯ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 A5 and CdO powder used in the example as raw materials, a sintered body made of Ag-12%CdO was obtained in the same manner as in the example and used as a contact, and this was 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ｌ〜８およびＮ１の粉末を用
い、これらをＡｇ ７（１％、Ｎｉ ３０％の重量比で
混合し、実施例と同様にしてＡｇＮ’＋７？、焼結体を
得て接点となし、これをリレー１こ組み込み供試品とし
た。Comparative Example 2 Using the powders 1 to 8 and N1 used in the examples as raw materials, they were mixed at a weight ratio of Ag 7 (1% and Ni 30%), and AgN'+7? and sintered in the same manner as in the examples. A solid body was obtained and used as a contact, and one relay was assembled into this as a test product.
比較例 ３
実施例で用いた原料粉末Ａ Ｂ によびＮＩを金属Ｚｎ
とともに７１８７０％、Ｎ１２０％、Ｚ ｎ金属粉（平
均粒径：５μ）１０％の重量比で混合し、実施例と′同
様にして焼結体を観て接点となし、これをリレーに組み
込み供試品とした。Comparative Example 3 NI was replaced with metal Zn by the raw material powder A B used in the example.
71870%, N120%, and Zn metal powder (average particle size: 5μ) at a weight ratio of 10%.The sintered body was made into a contact in the same manner as in the example, and this was assembled into a relay and provided. It was used as a sample.
前記各実施例および比較例で得た供試品につり・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１こ示す。なお、耐消耗性につい
ては３５万回開閉動作させｔこ時、接点の接触力か５ｇ
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 specimens obtained in each of the Examples and Comparative Examples described above were measured under the following conditions. The results are shown in Table 1. Regarding wear resistance, the contact force of the contact point was 5 g after opening and closing 350,000 times.
It is expressed by the number of relays below.
１試験条１！Ｉ］
供試品： リレー（２Ｃ）各５個
電圧： Ａ Ｃ２２０＼パ
電流：４Ａ
負荷： １氏抗負荷
接触カニ 初期２０〜３０ｇ
開閉頻度： ３（）回／分
［表 １１
接触抵抗 耐消耗性 溶着弁傘
（１桟） （個） （方面）
実施例 ５！Ｊ ２ ４３
比較例］ ａｏ １ ４ｓ
比較例２ ７０ ２ ３８
比較例３ ７２ ２ ４０
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」二あまり
問題とならない程度の差であることかわかる。1 test article 1! I] Test product: 5 relays (2C) each Voltage: A C220\Paper current: 4A Load: 1 degree anti-load contact crab Initial 20-30g Opening/closing frequency: 3 () times/min [Table 11 Contact resistance Wear resistance Gender Welded valve umbrella (1 piece) (pcs) (direction) Example 5! J 2 43 Comparative Example] ao 1 4s Comparative Example 2 70 2 38 Comparative Example 3 72 2 40 As is clear from the results shown in Table 1, the electrical contact materials according to the present invention are those of Comparative Example 2 and Comparative Example 3. The welding resistance was significantly improved compared to that of Comparative Example 1, and the properties were equivalent to those of Comparative Example 1. In addition, although the contact resistance and abrasion resistance are slightly inferior to those of Comparative Example 1, it can be seen that the difference is such that it does not pose much of a problem in practical use.
特許出願人 立石電磯株式会社Patent applicant: Tateishi Deniso Co., Ltd.
Claims (1)
で１．７〜１５％、残部実質的にＡＨ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、Ａｇ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。(1) After press-molding a mixed powder consisting of 10 to 3% Ni, Zn oxide 1.7 to 15% in terms of Z'n, and the remainder substantially AH, it is molded in a neutral or reducing atmosphere. A method for producing an electrical contact material, comprising sintering and reducing at least a portion of the oxide to form a solid solution in Ag and Nl in the form of a metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58134084A JPS6026623A (en) | 1983-07-21 | 1983-07-21 | Manufacture of electrical contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58134084A JPS6026623A (en) | 1983-07-21 | 1983-07-21 | Manufacture of electrical contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6026623A true JPS6026623A (en) | 1985-02-09 |
| JPH0474404B2 JPH0474404B2 (en) | 1992-11-26 |
Family
ID=15120029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58134084A Granted JPS6026623A (en) | 1983-07-21 | 1983-07-21 | Manufacture of electrical contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6026623A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62235443A (en) * | 1986-04-04 | 1987-10-15 | Tokuriki Honten Co Ltd | Electrical contact point material |
| JP2017179579A (en) * | 2016-03-29 | 2017-10-05 | 三菱電機株式会社 | Ag-Ni-METAL OXIDE-BASED ELECTRICAL CONTACT MATERIAL, MANUFACTURING METHOD THEREFOR, CIRCUIT BREAKER AND ELECTROMAGNETIC CONTACT DEVICE |
-
1983
- 1983-07-21 JP JP58134084A patent/JPS6026623A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62235443A (en) * | 1986-04-04 | 1987-10-15 | Tokuriki Honten Co Ltd | Electrical contact point material |
| JP2017179579A (en) * | 2016-03-29 | 2017-10-05 | 三菱電機株式会社 | Ag-Ni-METAL OXIDE-BASED ELECTRICAL CONTACT MATERIAL, MANUFACTURING METHOD THEREFOR, CIRCUIT BREAKER AND ELECTROMAGNETIC CONTACT DEVICE |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0474404B2 (en) | 1992-11-26 |
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