JPS5855544A - Production of electric contact material - Google Patents
Production of electric contact materialInfo
- Publication number
- JPS5855544A JPS5855544A JP56153335A JP15333581A JPS5855544A JP S5855544 A JPS5855544 A JP S5855544A JP 56153335 A JP56153335 A JP 56153335A JP 15333581 A JP15333581 A JP 15333581A JP S5855544 A JPS5855544 A JP S5855544A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- contact material
- powder
- metal
- internal oxidation
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 33
- 239000000956 alloy Substances 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims abstract description 5
- 229910052738 indium Inorganic materials 0.000 claims abstract description 4
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 4
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 3
- 229910052748 manganese Inorganic materials 0.000 claims abstract 2
- 230000003647 oxidation Effects 0.000 claims description 25
- 238000007254 oxidation reaction Methods 0.000 claims description 25
- 238000000465 moulding Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 238000007731 hot pressing Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 8
- 230000001590 oxidative effect Effects 0.000 abstract description 6
- 229910052718 tin Inorganic materials 0.000 abstract description 4
- 229910001316 Ag alloy Inorganic materials 0.000 abstract description 2
- 238000010310 metallurgical process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 229910044991 metal oxide Inorganic materials 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- -1 SnO Chemical class 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010128 melt processing Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- BSWGGJHLVUUXTL-UHFFFAOYSA-N silver zinc Chemical compound [Zn].[Ag] BSWGGJHLVUUXTL-UHFFFAOYSA-N 0.000 description 2
- 229910000846 In alloy Inorganic materials 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- QHGNHLZPVBIIPX-UHFFFAOYSA-N tin(II) oxide Inorganic materials [Sn]=O QHGNHLZPVBIIPX-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Powder Metallurgy (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、特に粉末冶金学的手法による
Ａｇ−金属酸化物系接点材料の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrical contact material, and in particular to a method for producing an Ag-metal oxide based contact material by powder metallurgy.
近年、電磁開閉器の小形化、高性能化に伴い、電気接点
の性能向上、特に耐溶着性の一層の向上が期待されてい
る。このため、これらの機器に使用する接点はＡｇ中に
ＯｄやＺｎ、Ｓｎなどを単独又社複合添加し、これを内
部酸化させることにより接点特性の向上を図っている。In recent years, with the miniaturization and higher performance of electromagnetic switches, it is expected that the performance of electrical contacts, especially the welding resistance, will be further improved. Therefore, in the contacts used in these devices, Od, Zn, Sn, etc. are added singly or in combination to Ag, and this is internally oxidized to improve the contact characteristics.
特に、Ａｇ−Ｃ！ｄＱ系接点は、優れた特性を有し、最
も幅広く使用されている。しかし、公害対策、人体に対
する影譬及び経済性などの点から、これに代る接点材料
が要望されている。Especially Ag-C! dQ type contacts have excellent characteristics and are most widely used. However, an alternative contact material is desired from the viewpoint of pollution control, impact on the human body, and economic efficiency.
一般に、耐溶着性に優れた接点材料を得るためには、Ａ
ｇ−金属酸化物系接点材料であるならば、Ａｇマトリッ
クス中に分散する卑金属酸化物の蓋を増加させることが
必要である。しかしながら、現在主に使用されているＡ
ｇ−金属酸化物系接点材料は、Ａｇと固溶し合い且つＡ
ｇよシも酸化されやすい金属を添加し、内部酸化法によ
って添加金属の酸化物を析出させた分散析出型合金であ
る。Generally, in order to obtain a contact material with excellent welding resistance, A
If it is a g-metal oxide based contact material, it is necessary to increase the cap of base metal oxide dispersed in the Ag matrix. However, currently mainly used A
g-The metal oxide contact material is a solid solution with Ag and
It is a dispersion precipitation type alloy in which a metal that is easily oxidized is added and the oxide of the added metal is precipitated by an internal oxidation method.
このために接点材料として製造し得る合金は限られ、た
とえＡｇに固溶しても添加元素が増加すると内部酸化が
不可能な場合が多く、耐溶着性の向上は望めない。また
、内部酸化後の合金は硬さが増加するため、塑性加工性
が低下するという問題点も有している。For this reason, alloys that can be manufactured as contact materials are limited, and even if they are dissolved in Ag, internal oxidation is often impossible as the amount of added elements increases, and no improvement in welding resistance can be expected. Furthermore, since the hardness of the alloy after internal oxidation increases, there is also the problem that plastic workability decreases.
現在、従来のＡｇ −ＯｄＯ系接点とほぼ同等の性能を
示すものとして注目されてきたのは、Ａｇ−ａｎ系合金
を内部酸化させたＡｇ −ＳｎＯえ系接点で金を溶解調
製後、圧延加工によって数置の厚さの板にする。この後
、酸素分圧ＩＫｖ／Ｌ：ｌｉ以上の酸化性雰囲気下で２
５０℃〜７５０℃に加熱保持して内部−酸化させる。こ
こで、８ｎを２重ｉｋチ以上としているのは、これ未満
では優れた耐溶着性が得られないためである。１５重ｔ
％を越えると内部酸化が困難となる。なお、日ｎ含有蓋
が増加してくると、合金の硬さが上昇し、塑性加工性が
低下するために打ち抜き加工などに問題が生じてくる。Currently, Ag-SnO-based contacts, which are made by internally oxidizing Ag-an-based alloys, are attracting attention as having almost the same performance as conventional Ag-OdO-based contacts, which are made by melting gold and then being rolled. Make a board several orders of magnitude thick. After this, under an oxidizing atmosphere with an oxygen partial pressure IKv/L:
Internal oxidation is carried out by heating and maintaining at 50°C to 750°C. Here, the reason why 8n is set to 2 ik or more is because if it is less than this, excellent welding resistance cannot be obtained. 15 weight t
%, internal oxidation becomes difficult. Incidentally, as the amount of Ni-containing lid increases, the hardness of the alloy increases and the plastic workability decreases, causing problems in punching and the like.
一般に、Ａｇ−ａｎ系合金においては、大気中において
内部酸化処理を行うとａｎの拡散速度が遅いために合金
の表面に８ｎＯ，の緻密な被膜が生じやすい。これを防
止するには高圧酸化が必要であるが、その場合に高圧の
酸化性雰囲気であっても内部酸化のための時間を非常に
長くすることが必要である。Generally, when an Ag-an alloy is subjected to internal oxidation treatment in the atmosphere, a dense film of 8 nO is likely to be formed on the surface of the alloy because the diffusion rate of an is slow. To prevent this, high-pressure oxidation is required, but even in a high-pressure oxidizing atmosphere, it is necessary to provide a very long time for internal oxidation.
上述のように、Ａｇ −８ｎＯ１系接点はムｇ −０’
ｄＯ系接点と同等の性能を有するとともに、人体に対し
ては無害であるという利点をもっている。しかし、溶解
加工法によるＡｇ −８ｎＯ，系接点は、上述のように
、Ｓｎ含有量の増加に伴って塑性加工性が低下し、また
、該合金を内部酸化処理するのに高圧容器設備が必要で
あシ、しかも内部酸化処理時間が長いという欠点を持っ
ている。As mentioned above, the Ag -8nO1 type contact is Mug -0'
It has the same performance as a dO type contact, and has the advantage of being harmless to the human body. However, as mentioned above, the plastic workability of Ag-8nO system contacts produced by melt processing decreases as the Sn content increases, and high-pressure vessel equipment is required to internally oxidize the alloy. Moreover, it has the disadvantage that the internal oxidation process takes a long time.
上記の溶解加工法とは別に、Ａｇ粉末と金属酸化物、例
えばＳｎＯ，、Ｉｎ、Ｏ，、ＺｎＯ１Ｂｉ、Ｏ，などの
粉末とを混合し、粉末冶金学的手法によシ接点材料を製
造することが提案されているが、この場合においても金
属酸化物をＡｇ中に分散させることは極めて困難である
。Apart from the above-mentioned melt processing method, a contact material is manufactured by a powder metallurgy method by mixing Ag powder and a powder of a metal oxide such as SnO, In, O, ZnO, Bi, O, etc. However, even in this case, it is extremely difficult to disperse metal oxides in Ag.
さらに、Ａｇ−ａｎ系合金の粉末を作製し、これを大気
中で内部酸化処理し、粉末冶金学的手法により接点材料
を製造する方法も提案されている。Furthermore, a method has also been proposed in which a powder of an Ag-an alloy is produced, the powder is internally oxidized in the atmosphere, and a contact material is produced by a powder metallurgical method.
この方法は、種々の利点を有しているが、大気中で内部
酸化が可能なＳｎ含有量は８重ｉｋチ以下であシ、この
程度のＳｎ含有量では十分な接点特性が得られないとい
う難点がある。Although this method has various advantages, the Sn content that can be internally oxidized in the atmosphere is less than 8x, and sufficient contact characteristics cannot be obtained with this level of Sn content. There is a drawback.
したがって、本発明の目的は、従来技術の問題点を克服
し、耐溶着性に優れ且つ下記の特徴を有し、経済性に富
んだ電気接点材料の製造方法を提供することである。Therefore, an object of the present invention is to overcome the problems of the prior art and to provide an economical method for producing an electrical contact material that has excellent welding resistance and the following characteristics.
（１）内部酸化処理の方法を簡略化できる。(1) The internal oxidation treatment method can be simplified.
■ Ｅｌｎのようなムｇに固溶し且つＡｇよシも酸化さ
れやすい金属の含有量を多くすることができ、安価な接
点が得られる。また、内部酸化が不可能な合金粉末にも
適用できる。(2) It is possible to increase the content of metals such as Eln, which are solid-dissolved in Mug and which are easily oxidized, as well as Ag, resulting in inexpensive contacts. It can also be applied to alloy powders that cannot be internally oxidized.
■ 材料損失がほとんどない。■ There is almost no material loss.
■ 接点形状の選択を幅広くとることが可能である。■ It is possible to choose a wide range of contact shapes.
しかして、本発明によれば、Ａｇに固溶し且りＡｇよシ
も酸化されやすい金属の少なくとも１種を含有するムｇ
−Ｍ合金粉末を大気中で内部酸化又は高温加熱処理し、
次いで混合、破粉砕、成形、焼結、熱間プレスの工程を
経ることからなる電気接点材料の製造方法を提供するこ
とによシ達成しようとするものである。Therefore, according to the present invention, a mug containing at least one metal that is solid-dissolved in Ag and that is easily oxidized than Ag.
- M alloy powder is subjected to internal oxidation or high temperature heat treatment in the atmosphere,
This is achieved by providing a method for producing an electrical contact material, which comprises the steps of mixing, crushing, molding, sintering, and hot pressing.
Ａｇとの合金である。このよりなＡｇ合金の例としては
、Ａｇ−ａｎ、Ａｇ−工ｎ１ムｇ −Ｚｎ 、ムｇ −
Ｍｎ 。It is an alloy with Ag. Examples of such strong Ag alloys include Ag-an, Ag-Zn, Mug-Zn, and Ag-Zn.
Mn.
Ａｇ −ａｎ−Ｉｎ系の本のがあげられる。特に好まし
いのは、ムｇ−ｓ 〜１１重量％Ｓｎ又１ｄ Ａｇ −
１０〜１５重ｔ１８ｎ−２〜６重量％Ｉｎ合金である。Examples include Ag-an-In books. Particularly preferred is Mug-s to 11% by weight Sn or 1dAg-
It is a 10-15 weight t18n-2-6 weight% In alloy.
本発明の方法において、ムｇ合金は１５０μｍ以下、好
ましくは１００μｍ以下の粒度を有する粉末であること
が重要である。なぜならば、内部酸化処理時間が短縮さ
れると同時に、後述するように、この内部酸化した合金
粉末を成形、焼結した後、熱間プレスの工程を追加する
ことによシ最終接点材料はその理論密度に到達し、性能
も格段に向上することがわかったからである。In the method of the invention, it is important that the mug alloy is a powder with a particle size of less than 150 μm, preferably less than 100 μm. This is because the internal oxidation treatment time is shortened, and at the same time, as will be described later, by adding a hot pressing process after forming and sintering this internally oxidized alloy powder, the final contact material is This is because it was found that the theoretical density was reached and the performance was significantly improved.
上記のＡｇ−Ｍ合金粉末は、次いで大気中で内部酸化処
理に付される。この処理は、２５０〜７５０℃の温度で
１〜１０時間、好ましくは数時間性なわれる。しかし、
酸化されやすい金属が多くなると（例えば８ｎ含有蓋が
８％以上になると）、外部酸化（酸化物（ＳｎＯ−被膜
が粉末粒表面に生成する）の進行が大きくなるために十
分な接点特性を得るこ′とが不可能となる。しかし、金
属含有量の増加にしたがって耐消耗、耐溶着性が良好と
なり、しかもＡｇ量の低下によってコストが低下するの
で、外部酸化したものでも何らかの処理を行なって特性
を向上させることが要求される。この処理は、Ａｇ−Ｍ
合金粉末が十分に内部酸化されているか否かにかかわら
ず、高温にて加熱酸化することによって達成される。The above Ag-M alloy powder is then subjected to internal oxidation treatment in the atmosphere. This treatment is carried out at a temperature of 250 DEG to 750 DEG C. for 1 to 10 hours, preferably several hours. but,
When the amount of metal that is easily oxidized increases (for example, when the 8N content becomes 8% or more), the progress of external oxidation (oxide (SnO-film is formed on the powder grain surface) increases) to obtain sufficient contact characteristics. However, as the metal content increases, the wear resistance and welding resistance improve, and the cost decreases due to the decrease in the Ag content, so even if the material is externally oxidized, some kind of treatment is necessary. It is required to improve the properties of Ag-M.
Regardless of whether or not the alloy powder is sufficiently internally oxidized, this can be achieved by heating and oxidizing it at high temperatures.
次いで、内部酸化処理粉末は、ボールミル、ライカイ機
等の混合機で数十時間混合、破粉砕される。上述したよ
うに、酸化物（例えば日ｎＯよ）の被膜が粉末粒表面に
生成したとしても、ボールミル処理することによって酸
化物被膜が破壊され、粉砕されてムｇ粉末と均一に混合
されることになり、接点特性が向上される。Next, the internally oxidized powder is mixed and crushed for several tens of hours in a mixer such as a ball mill or a Laikai machine. As mentioned above, even if an oxide film (for example, NiO) is formed on the surface of the powder grain, the oxide film is destroyed by ball milling, and the powder is pulverized and mixed uniformly with the mug powder. and the contact characteristics are improved.
上記の混合、破粉砕されたＡｇ−Ｍ合金粉末は、所望の
形状に成形される。成形は、一般に１〜１０ｔｏｎ／７
、好ましくは２〜５ｔｏｎ／−の加圧下で行われる。成
形物は、次いで大気中で焼結される。The above-mentioned mixed and crushed Ag-M alloy powder is molded into a desired shape. Molding is generally 1 to 10 tons/7
, preferably under a pressure of 2 to 5 tons/-. The molding is then sintered in air.
焼結温度は、一般に５００℃〜１０００℃、好ましくは
７００℃〜９００℃であシ、１〜１０時間、好ましくは
２〜５時間処理される。焼結物はさらに熱間プレス処理
に付されて接点材料とされる。通常このプレス処理は、
４００〜６００℃の温度で５〜１０ ｔｏｎ ／ｄの加
圧下に５〜２０秒間実施される。もちろん、上記の各条
件は、得ようとする接点材料の性能に応じて適宜変更す
ることができることはいうまでもない。The sintering temperature is generally 500°C to 1000°C, preferably 700°C to 900°C, and the treatment is carried out for 1 to 10 hours, preferably 2 to 5 hours. The sintered product is further subjected to hot pressing treatment to form a contact material. This pressing process is usually
It is carried out for 5 to 20 seconds at a temperature of 400 to 600°C and under a pressure of 5 to 10 ton/d. Of course, it goes without saying that each of the above conditions can be changed as appropriate depending on the desired performance of the contact material.
本発明の方法によれば、内部酸化処理が大気中でできる
ので酸化処理時間が大幅に短縮できる。According to the method of the present invention, since the internal oxidation treatment can be performed in the atmosphere, the oxidation treatment time can be significantly shortened.
また、８ｎのような酸化性金属の含有量が多くなっても
十分な接点性能を有する電気接点材料を得ることができ
る。Moreover, even if the content of an oxidizing metal such as 8n is increased, an electrical contact material having sufficient contact performance can be obtained.
さらに、従来の内部酸化の限度以上に合金元累を添加で
きるので、経済性に富んだ接点材料が得られる。さらに
、接点性能は、従来のＡｇ −０（１０接点とはぼ同等
か又はそれ以上である。特に、金属酸化物が細かく且つ
均一に分散しているために耐溶着性に優れている。しか
も、公害性がない接点材料が得られる。Furthermore, since the alloying element can be added in an amount exceeding the limit of conventional internal oxidation, a contact material with high economic efficiency can be obtained. Furthermore, the contact performance is almost the same as or better than the conventional Ag-0 (10) contact.In particular, the metal oxide is finely and uniformly dispersed, so it has excellent welding resistance. , a non-polluting contact material can be obtained.
以下、比較例及び実施例によシ本発明をさらに例示する
。The present invention will be further illustrated below using comparative examples and examples.
比較例
Ａｇ −Ｅｌｎ合金を溶解後、圧延加工して１箇の板を
得た。これを素材とし、大気中で温度と時間の組合せを
変化させて内部酸化処理実験を行った。Comparative Example After melting the Ag-Eln alloy, it was rolled to obtain one plate. Using this material, internal oxidation treatment experiments were conducted in the atmosphere by varying the combination of temperature and time.
この実験によって、日ｎが８チ未満の合金では７５０℃
以下の温度で数十時間保持すると、わずかに内部酸化す
ることが認められた。８％以上のものでは表面に８ｎＯ
，の被膜が発生しゃすくなシ、内部酸化はほとんどでき
なかった。また、６〜８チ８ｎ含有量のものも表面に薄
いＳｎＯ，の被膜が認められた。Ａｇ８ａｆｉＢｍ合金
の場合、７５０℃ｘ ６４ｈｒの処理でもその内部酸化
深さはｉｉｏｐｍ程度であった。これは、通常必要とさ
れる内部酸化深さの５〜１０％に相当する厚さでしかな
い。Through this experiment, it was found that the temperature of 750°C for alloys with n less than 8
Slight internal oxidation was observed when kept at the following temperature for several tens of hours. If it is 8% or more, 8nO is added to the surface.
However, no internal oxidation occurred. A thin SnO film was also observed on the surface of the samples containing 6 to 8 8n. In the case of Ag8afiBm alloy, the internal oxidation depth was about iiopm even after treatment at 750°C for 64 hours. This is only a thickness corresponding to 5-10% of the normally required internal oxidation depth.
実施例１
１５重量％ ８ｎ以下のムｇ−ａｎ系合金をアトマイズ
法によって１５０ｐｍ 以下の粒度を持つへｇ−８ｎ系
合金粉末を製造した。この粉末を大気中７５０℃以下の
温度で数時間酸化処理した後、ボールミルでＩ時間混合
、破粉砕した。次いで、以下の工程によ多接点を製作し
た。Example 1 A mug-an alloy powder having a particle size of 150 pm or less was produced by atomizing a mug-an alloy powder having a grain size of 150 pm or less. This powder was oxidized in the air at a temperature of 750° C. or lower for several hours, then mixed and crushed in a ball mill for I hour. Next, multiple contacts were manufactured using the following steps.
成形（３ｔｏｎ／ｃＩｌ）→焼結（８００℃×２時間、
大気中）→熱間プレス（５３０℃、７．３ｔｏｎ／ｇＪ
、９秒）
製作した接点を定格７５ムの電磁接触器に組込んで、次
の条件で接点試験を行った。Molding (3 ton/cIl) → Sintering (800°C x 2 hours,
In the atmosphere)→Hot press (530℃, 7.3ton/gJ
, 9 seconds) The manufactured contact was assembled into an electromagnetic contactor with a rating of 75 μm, and a contact test was conducted under the following conditions.
負荷電圧： ＡＣ！２００Ｖｓ ３φ、５Ｑ Ｈｚ負荷
電流： ３７５Ａ、ｓ〜（０，１秒通１ｔ）力率：Ｃｏ
θψ−０，３５
開閉頻度：３６０６０時間
上記の試験条件による結果の比較を下表に示す。Load voltage: AC! 200Vs 3φ, 5Q Hz Load current: 375A, s ~ (0.1 seconds 1t) Power factor: Co
θψ−0,35 Opening/closing frequency: 36,060 hours A comparison of the results under the above test conditions is shown in the table below.
以上の結果から、Ａｇ−８重量％８ｎ合金の場合には内
部酸化が可能なため、粉末の混合、被粉砕処理の有無に
かかわらず優れた接点特性が得られるが、Ａｇ−１１重
量％８ｎ合金の場合には混合、被粉砕処理の効果が顕著
であり、その接点性能は従来のムｇ −１３％ Ｇａｏ
接点のものより上回ってお）、その有用性が認められる
。From the above results, in the case of Ag-8 wt% 8n alloy, internal oxidation is possible, so excellent contact characteristics can be obtained regardless of powder mixing and pulverization treatment, but Ag-11 wt% 8n In the case of alloys, the effects of mixing and pulverization are remarkable, and the contact performance is better than that of conventional Mg-13% Gao
(exceeded that of the contact point), its usefulness is recognized.
実施例２
アトマイズ法によって、１１重量％Ｓｎ、４．５重量％
ェｎ１残部がＡｇよシなるＡｇ−８ｎ系合金を１５０μ
ｍ以下の粒度の合金粉末とした。これを７００℃で１６
時間の内部酸化処理に付し、次いでボールミルにて混合
、被粉砕処理を加時間行なった。Example 2 11% by weight Sn, 4.5% by weight by atomization method
150μ of Ag-8n alloy in which the remainder of n1 is Ag.
The alloy powder had a particle size of less than m. This was heated to 700℃ for 16
The mixture was subjected to internal oxidation treatment for hours, and then mixed and pulverized in a ball mill for an additional period of time.
その後、以下の工程で接点を製作した。After that, the contacts were manufactured using the following steps.
成形（３ｔｏｎ／、−ｊ ）→焼結（８００℃、２時間
、大気中）→熱間プレス（７ｔ、ｏｎ／ｄ、５５０℃、
９秒）
得られた接点を２６Ａの電磁接触器に組込んで以下の条
件で接点試験を行った。Molding (3 tons/, -j) → Sintering (800°C, 2 hours, in the atmosphere) → Hot pressing (7 tons, on/d, 550°C,
(9 seconds) The obtained contact was assembled into a 26A electromagnetic contactor and a contact test was conducted under the following conditions.
負荷電圧：ム０２２０Ｖ、３φ、５ＱＨｚ負荷電流：１
５０Ａ、５〜（０，１秒通電）力 °率 ： ｃｏｓψ
−０，３５
開閉頻度：３６０回／時間
次の結果が得られた。Load voltage: 0220V, 3φ, 5QHz Load current: 1
50A, 5~(0.1 seconds energization) Power factor: cosψ
-0,35 Opening/closing frequency: 360 times/hour The following results were obtained.
消耗量（Ｗ／ １００００回） ： １８０寿命値
（回） ： ５６，０００特許出願人 株式
会社ｇ士電機総合研究所同 富士電機製造株式
会社Wear amount (W/10,000 times): 180 life value
(Times): 56,000 Patent applicants: G-Shi Electric Research Institute Co., Ltd. Fuji Electric Manufacturing Co., Ltd.
Claims (1)
い金属Ｍの少なくとも１種を含有するＡｇ−Ｍ系合金粉
末を大気中で内部酸化又は高温加熱処理し、次いで、混
合、被粉砕、成形、焼結、熱間プレスの工程を経ること
からなる電気接点材料の製造方法。 （２、特許請求の範囲第１項記載の製造方法において、
Ａｇに固溶し且つ五ｇよシも酸化されやすい金属Ｖがａ
ｎ、Ｉｎ、 Ｚｎ、 Ｍｎ、 Ｂｉ又はこれらの組合せ
からなることを特徴とする電気接点材料の製造方法。 （３）特許請求の範囲第１項記載の製造方法において、
ムｇ−Ｍ合金は、８〜１１重量＄８ｎ、残部がＡｇ、又
Ｉｆ １０〜１５重量％、ａｎと２〜６重ｔＳ工ｎと、
残部がムｇからなるものであることを特徴とする電気接
点材料の製造方法。 （４）特許請求の範囲第１〜４項のいずれかに記載の製
造方法において、Ａｇ−Ｍ合金粉末が１５０μｍ以下の
粒度を有することを特徴とする電気接点材料の製造方法
。[Scope of Claims] (1) Ag-M alloy powder containing at least one metal M that is dissolved in Ag and is easily oxidized is subjected to internal oxidation or high-temperature heat treatment in the atmosphere, Next, a method for producing an electrical contact material, which comprises the steps of mixing, pulverizing, molding, sintering, and hot pressing. (2. In the manufacturing method described in claim 1,
The metal V, which is solid-dissolved in Ag and is easily oxidized, is a
A method for producing an electrical contact material, characterized in that the material is made of n, In, Zn, Mn, Bi or a combination thereof. (3) In the manufacturing method according to claim 1,
The Mug-M alloy has a weight of 8 to 11% by weight, the balance is Ag, and if 10 to 15% by weight, an and 2 to 6 weights of tS engineering.
A method for producing an electrical contact material, characterized in that the remainder consists of mug. (4) A method for producing an electrical contact material according to any one of claims 1 to 4, wherein the Ag-M alloy powder has a particle size of 150 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56153335A JPS5855544A (en) | 1981-09-28 | 1981-09-28 | Production of electric contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56153335A JPS5855544A (en) | 1981-09-28 | 1981-09-28 | Production of electric contact material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5855544A true JPS5855544A (en) | 1983-04-01 |
Family
ID=15560227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56153335A Pending JPS5855544A (en) | 1981-09-28 | 1981-09-28 | Production of electric contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5855544A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621835A (en) * | 1985-06-26 | 1987-01-07 | Tanaka Kikinzoku Kogyo Kk | Manufacture of ag-nio electric contact point material |
-
1981
- 1981-09-28 JP JP56153335A patent/JPS5855544A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621835A (en) * | 1985-06-26 | 1987-01-07 | Tanaka Kikinzoku Kogyo Kk | Manufacture of ag-nio electric contact point material |
| JPH0475297B2 (en) * | 1985-06-26 | 1992-11-30 |
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