JPS5845301A - Production of material for electrical contact point - Google Patents
Production of material for electrical contact pointInfo
- Publication number
- JPS5845301A JPS5845301A JP56143386A JP14338681A JPS5845301A JP S5845301 A JPS5845301 A JP S5845301A JP 56143386 A JP56143386 A JP 56143386A JP 14338681 A JP14338681 A JP 14338681A JP S5845301 A JPS5845301 A JP S5845301A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- electrical contact
- metallic
- difficult
- solid solution
- 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 13
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000000843 powder Substances 0.000 claims abstract description 32
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 150000004706 metal oxides Chemical class 0.000 claims description 4
- 239000002923 metal particle Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000004663 powder metallurgy Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims 1
- 238000005245 sintering Methods 0.000 abstract description 7
- 239000006104 solid solution Substances 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 2
- 229910052719 titanium Inorganic materials 0.000 abstract description 2
- 229910052721 tungsten Inorganic materials 0.000 abstract description 2
- 239000013528 metallic particle Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 4
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000001192 hot extrusion Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/001—Starting from powder comprising reducible metal compounds
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Switches (AREA)
- Conductive Materials (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、特に粉末冶金法によ
って製造されるＡｇ系電気蓚点材料の製造方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing an electrical contact material, and particularly to a method for producing an Ag-based electrical contact material produced by a powder metallurgy method.
ＡｇとＡｇに固浴しにくい金属（Ｍｏ、Ｗ、Ｔｉ。Ag and metals that are difficult to solidify with Ag (Mo, W, Ti).
Ｃｒ、Ｃｏなと）の複合材料を電気接点として用いた場
合の一般的特徴として低接触抵抗特性や耐消耗特性には
優れているものの、耐溶着特性％に初期浴着を起こし易
い。たとえばワイプル分布パラメーター隅で耐溶着性管
みた場合、餌く１で初期漂着型に分類され、この欠点が
致命的欠点とされていた。The general characteristics of composite materials (Cr, Co, etc.) when used as electrical contacts are that they are excellent in low contact resistance and wear resistance, but are susceptible to initial bath deposition in terms of welding resistance. For example, when looking at the welding resistance tube at the corner of the Weipul distribution parameter, it was classified as an early drift type with bait 1, and this defect was considered a fatal defect.
従来のＡｇ＋（Ａｇと固溶しにくい金属）材料の製造方
法はＡｇ粉末とＡｇと固溶しにくい金属粉末管混合した
俵、圧縮、焼結、押出によル所望形状のワイヤーに成形
していたが、このワイヤー中のＡｇと固浴しにくい金属
の粒子Ｆｉｉ Ｏｐｒｙｓ−数１０ｐｓｎＫ凝集してし
まっていた。これは粉末の表面エネルギーが高いため、
混合時に同一金属粉が凝集してしまうからと考えられる
。つまりワイヤー中のムｇＫ固潜しにくい金属粒子の分
散が均−微細で碌−ため初期溶着を起こすのである。The conventional manufacturing method for Ag+ (a metal that is difficult to form a solid solution with Ag) is to mix Ag powder and a metal powder tube that is difficult to form a solid solution with Ag into a bale, and form it into a wire of the desired shape by compression, sintering, and extrusion. However, the metal particles Fii Oprys, which are difficult to form a solid bath with the Ag in this wire, had aggregated by several tens of psnK. This is due to the high surface energy of the powder.
This is thought to be because the same metal powders aggregate during mixing. In other words, the dispersion of the metal particles, which are difficult to solidify with MugK, in the wire is uniform, fine, and strong, which causes initial welding.
攻
そこで本発明者等は鋭意功究の結果、初期浴着を起こさ
ない電気接点材料の製造方法を開発したものである。As a result of intensive research, the present inventors have developed a method for producing electrical contact materials that does not cause initial bath deposition.
本発明の製造方法は粉末冶金法により電気接点材料を製
造する方法においてＡｇ粉末とＡｇに固溶しにくい金属
粉末のいずれか一方または両方を金属鹸化物粉末として
混合した後、その金属酸化物粉末ｔａ元すること′ｋａ
黴とする奄のである。The manufacturing method of the present invention is a method for manufacturing electrical contact materials by powder metallurgy, in which either or both of Ag powder and metal powder that is difficult to dissolve in Ag is mixed as metal saponified powder, and then the metal oxide powder is mixed. ta original thing'ka
It's moldy.
すなわち金属粉末ｔｒＲ化物粉末として混合することに
よって凝集を防ぐと同時に金Ｆ４酸化物の脆性を生かし
混合時に金属酸化物粉末をくだき、粒子を微細にするこ
とをねらったものである。したがってＡｇと固浴しにく
い金属以外の金Ｒ′ｆ：添加剤として株加してもこれら
の効果は阻害されない。That is, the aim is to prevent agglomeration by mixing the metal powder as a trR compound powder, and at the same time take advantage of the brittleness of the gold F4 oxide to crush the metal oxide powder during mixing to make the particles fine. Therefore, these effects are not inhibited even if gold R'f is added as an additive other than metals that are difficult to solidify with Ag.
なお混合装置としてはＶ型混合機、ゲールミル。The mixing equipment used is a V-type mixer and a Gale mill.
粉砕機などかあシ、これらを併用してもよい。また金属
酸化物粉末の還元ＦｉＨ鵞ガス等の還元性雰囲気を用い
予備焼結時に還元を行なうことが好ましい。したがって
予備焼結温度としては３００℃−９５０℃の範囲が良い
。A crusher, etc., may be used in combination. Further, it is preferable to reduce the metal oxide powder during preliminary sintering using a reducing atmosphere such as FiH gas. Therefore, the pre-sintering temperature is preferably in the range of 300°C to 950°C.
実施例ｌ
Ａｇ−Ｍｏ １０ Ｗ／ｃｈ合金となるように調整した
ＡｇｚＯ粉末とＭδ０３粉末をＶ型混合機により３時間
予備混合後、内径５０／ｗのルツボに充填して温度８０
０℃Ｈ２雰囲気で還元処理した。次に圧縮、焼結を繰返
し、熱間で押出し、引抜加工してλ５Ｊ’ｍ及び２’／
ｗａの線材とした。この線材の断面を金属顕微鏡で観察
したところ、ＭＯ粒子は全て５ｐｍ以下でめった。Example 1 AgzO powder and Mδ03 powder adjusted to form an Ag-Mo 10 W/ch alloy were premixed for 3 hours using a V-type mixer, then filled into a crucible with an inner diameter of 50/w and heated to a temperature of 80
Reduction treatment was performed in a H2 atmosphere at 0°C. Next, compression and sintering are repeated, hot extrusion and drawing are performed to obtain λ5J'm and 2'/
It was made into a wa wire rod. When the cross section of this wire was observed with a metallurgical microscope, all MO particles were found to be less than 5 pm.
実施例２
Ａｇ−Ｗｘｏ％合金となるように調整したＡｇ粉末とＷ
Ｏｓ 粉末ｔｖｍ混合機によ多３時間予予備台後、内
径５０／襲のルツボに充填して温度８００ｔＨ２写硼気
で還元処理した。次に圧縮。Example 2 Ag powder and W adjusted to form an Ag-Wxo% alloy
The powder was pre-prepared in a tvm mixer for 3 hours, then filled into a crucible with an inner diameter of 50 mm and subjected to reduction treatment at a temperature of 800 tH2. Next, compress.
焼結を繰返し、熱間で押出し、引抜加工して２５メ■及
び２メＵの線材とした。この縁材の断面を金属顕微鏡で
観察したところＷ粒子は全て５ｐｍ以下であった。Sintering was repeated, hot extrusion, and drawing to produce wire rods of 25 mm and 2 mm. When the cross section of this edge material was observed with a metallurgical microscope, all of the W particles were 5 pm or less in size.
従来例
Ａｇ扮末４５０ｔとＷ粉末５０ｔをＶ型混合機にて３時
間混合後、内径５０ｍの金型に充填して、温度８００℃
真空中で１時間熱処理を行った０次に圧縮、焼結を繰返
し、熱間押出し、引抜加工して２．５／ｍ及び２メ■の
線材となした。この線材の断ａｔ金属顕微鏡で観察した
ところ、Ｗ粒子は１５ｐｍ−６０ｐｍの範囲であツタ。Conventional example: After mixing 450 tons of Ag powder and 50 tons of W powder in a V-type mixer for 3 hours, the mixture was filled into a mold with an inner diameter of 50 m and heated to a temperature of 800°C.
After heat treatment in vacuum for 1 hour, compression and sintering were repeated, followed by hot extrusion and drawing to obtain a wire rod of 2.5/m and 2 mm. When a cross section of this wire was observed using a metallurgical microscope, the W particles were found to be in the range of 15 pm to 60 pm.
上記実施＄１１．２及び従来例で得た線材をヘッダー加
工して頭径４ｕ、膨径２ Ｍ 、全長１７ ｍ 。The wire rods obtained in the above implementation $11.2 and the conventional example were head-processed to have a head diameter of 4u, an expanded diameter of 2M, and a total length of 17m.
脚長１．６調の可動接点と頭径５藺１脚径′Ｌ５謔。Movable contact with leg length 1.6 and head diameter 5mm, 1 leg diameter 'L5'.
全長３．８ ｍ 、脚長２５諺の固定接点を製作し、下
記の試験条件にて開閉試験全行っ几。そして、浴着発生
までの動作回数’ｔ ＩＩ定し、下表のような結果を得
た。A fixed contact with a total length of 3.8 m and a leg length of 25 m was manufactured, and all opening and closing tests were conducted under the following test conditions. Then, the number of operations 't II until the occurrence of bath deposition was determined, and the results shown in the table below were obtained.
負 荷 ： 抵抗負荷
電 圧 ： ＡＣｌ ｏｏＶ電 流
： ４０Ａ（突入）１０Ａ（定常）
開閉頻度 ： ２０回／分
通電時間 ： ６２ｏｍｓ
休止時間 ： ２３５（５ｍｓ
接触力 ＝４０を
開離力 ＝４０２
試験台数 ： ９台
上記の表で明らかなように１実施例１．２の接点は従来
例のものに比し、ＡｇＫ固溶しにくい金属粒子がワイヤ
ーに均−微細に分布しているため、特性寿命も２倍以上
に伸び、ワイプル分布パラメーターｍも１以上で初期浴
着の発生がなかった仁とがわかる。Load: Resistive load Voltage: ACl ooV current
: 40A (inrush) 10A (steady) Opening/closing frequency: 20 times/min Energization time: 62oms Resting time: 235 (5ms) Contact force = 40, separation force = 402 Number of test units: 9 As shown in the table above, 1 Compared to the conventional example, the contact of Example 1.2 has metal particles that are difficult to dissolve in AgK and are evenly and finely distributed in the wire, so the characteristic life is more than doubled, and the Wipul distribution parameter m is also lower. A value of 1 or more indicates that there was no initial occurrence of bathing.
以上詳述した通電、本発明の電気接点の製造方法によれ
ば、Ａｇ−Ａｇに固溶しにくい金属系電気接点材料の初
期密着を防止できるという優れた効果がある。According to the energization and manufacturing method of the electrical contact of the present invention described in detail above, there is an excellent effect of preventing the initial adhesion of the metallic electrical contact material that is difficult to form a solid solution in Ag-Ag.
出願人 田中貴金属工業株式会社Applicant: Tanaka Kikinzoku Kogyo Co., Ltd.
Claims (1)
電気接点材料の粉末冶金法による製造方法において、Ａ
ｇ粉末とＡｇ［同容しない金属粉末のいずれか一方又は
両方を金属酸化物として混合した彼、その酸化物粉末を
還元することヲＩｖｆ黴とする電気接点材料の製造方法
。[Claims] In a method for producing an electrical contact material using a powder metallurgy method in which metal particles that are difficult to dissolve in Ag and Iil are dispersed in a ground AgO substrate,
A method for producing an electrical contact material in which one or both of Ag powder and Ag powder (incompatible metal powders) are mixed as a metal oxide, and the oxide powder is reduced to Ivf mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56143386A JPS5845301A (en) | 1981-09-11 | 1981-09-11 | Production of material for electrical contact point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56143386A JPS5845301A (en) | 1981-09-11 | 1981-09-11 | Production of material for electrical contact point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5845301A true JPS5845301A (en) | 1983-03-16 |
Family
ID=15337560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56143386A Pending JPS5845301A (en) | 1981-09-11 | 1981-09-11 | Production of material for electrical contact point |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5845301A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109022841A (en) * | 2018-07-26 | 2018-12-18 | 昆明理工大学 | A kind of preparation method of the nano-particle reinforced silver-based electrical contact material of Mo |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4928828A (en) * | 1972-07-12 | 1974-03-14 | ||
| JPS5465104A (en) * | 1977-11-02 | 1979-05-25 | Sumitomo Electric Ind Ltd | Raw material powder containing molybdenum and tungsten for powder metallurgy and product of powder metallurgy |
-
1981
- 1981-09-11 JP JP56143386A patent/JPS5845301A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4928828A (en) * | 1972-07-12 | 1974-03-14 | ||
| JPS5465104A (en) * | 1977-11-02 | 1979-05-25 | Sumitomo Electric Ind Ltd | Raw material powder containing molybdenum and tungsten for powder metallurgy and product of powder metallurgy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109022841A (en) * | 2018-07-26 | 2018-12-18 | 昆明理工大学 | A kind of preparation method of the nano-particle reinforced silver-based electrical contact material of Mo |
| CN109022841B (en) * | 2018-07-26 | 2020-10-27 | 昆明理工大学 | Preparation method of Mo nanoparticle reinforced silver-based electrical contact material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2545438A (en) | Spark plug electrode | |
| US6432157B1 (en) | Method for preparing Ag-ZnO electric contact material and electric contact material produced thereby | |
| CN109500391A (en) | A kind of preparation method of high ductility silver zinc oxide contact material | |
| JP3825275B2 (en) | Electrical contact member and its manufacturing method | |
| JPWO2012066826A1 (en) | Method for producing Ag-oxide based electrical contact material and electrical contact material thereby | |
| US3506437A (en) | Method for making silver/cadmium oxide contact materials | |
| JPS5845301A (en) | Production of material for electrical contact point | |
| CN109593981A (en) | A kind of preparation method for the sliver oxidized tin contactor materials improving ingot blank agglutinating property | |
| JPH0561334B2 (en) | ||
| CN109609794A (en) | A kind of preparation method of high ductility sliver oxidized tin contactor materials | |
| US3525609A (en) | Copper alloy material | |
| WO1994024327A1 (en) | Tungsten-base electrode material | |
| JPH0475297B2 (en) | ||
| CN109500392A (en) | A kind of preparation method for the silver zinc oxide contact material improving ingot blank agglutinating property | |
| RU2769344C1 (en) | Material for arc-quenching and breaking electrical contacts based on copper and method of its production | |
| JPH02225636A (en) | Manufacture of electrical contact material | |
| JPS58189304A (en) | Manufacture of electrical contact material | |
| JPS6244541A (en) | Manufacture of silver-tin oxide-type electric contact point material | |
| JPS589951A (en) | Manufacture of electrical contact material | |
| JP3054698B2 (en) | Method for producing particle-dispersed alloy powder | |
| KR820000167B1 (en) | Method of manufacture for a vaccume breacker | |
| JPH0293029A (en) | Manufacture of oxide dispersion strengthened alloy | |
| DE3033877A1 (en) | ALLOYED LEAD WIRE AND METHOD FOR THE PRODUCTION THEREOF | |
| JPH05101749A (en) | Manufacture of electrode material | |
| Scheithauer Jr et al. | The Manufacture and Properties of High-Conductivity High-Strength Cu-ThO2 |