JPS63291859A - Core material for winding fuse - Google Patents
Core material for winding fuseInfo
- Publication number
- JPS63291859A JPS63291859A JP62129409A JP12940987A JPS63291859A JP S63291859 A JPS63291859 A JP S63291859A JP 62129409 A JP62129409 A JP 62129409A JP 12940987 A JP12940987 A JP 12940987A JP S63291859 A JPS63291859 A JP S63291859A
- Authority
- JP
- Japan
- Prior art keywords
- core material
- flux
- alumina powder
- weight
- firing
- 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
- 239000011162 core material Substances 0.000 title claims abstract description 17
- 238000004804 winding Methods 0.000 title claims description 9
- 239000000843 powder Substances 0.000 claims abstract description 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000004907 flux Effects 0.000 claims abstract description 18
- 238000010304 firing Methods 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 7
- 238000007493 shaping process Methods 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 238000001125 extrusion Methods 0.000 abstract description 3
- 238000004898 kneading Methods 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 239000011230 binding agent Substances 0.000 abstract description 2
- 239000002270 dispersing agent Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- 238000000465 moulding Methods 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- 238000005245 sintering Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 238000010292 electrical insulation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 235000012438 extruded product Nutrition 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明はヒユーズ巻付用芯材に係り、更に詳細には熱伝
導性、電気絶縁性及び寸法精度に優れたアルミナ質焼結
体よりなるヒユーズ巻付用芯材に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a core material for fuse winding, and more specifically to a core material made of an alumina sintered body having excellent thermal conductivity, electrical insulation properties, and dimensional accuracy. Regarding core material for fuse winding.
〈従来の技術及び問題点〉
従来より低容量のガラス管ヒユーズは、ヒユーズ細線の
強度が弱いため使用中あるいは使用前後に、熱ショック
や振動において断線を生じやすいとの欠点を有していた
。<Prior Art and Problems> Glass tube fuses with a lower capacity than conventional glass tube fuses have a drawback in that the strength of the thin fuse wire is weak, so that they are easily broken due to thermal shock or vibration during or before and after use.
それ故、ヒユーズ細線を補強する芯材の適用が考えられ
るが該芯材としては、ガラス管ヒユーズの製作が大量生
産によるコスト低減のてんより自動化を前提とするため
、寸法精度が良くかつ電気絶縁性、更にはヒユーズの熱
放散を補助する目的で熱伝導性の優れた物性を有するも
のが要求される。Therefore, it is possible to use a core material to reinforce the thin fuse wire, but since the production of glass tube fuses is premised on automation rather than cost reduction through mass production, the core material must have good dimensional accuracy and electrical insulation. Furthermore, materials with excellent physical properties of thermal conductivity are required for the purpose of assisting the heat dissipation of the fuse.
かかる事情下に鑑み、本発明者らは寸法精度が良く電気
絶縁性、熱伝導性に優れたヒユーズ、巻付用芯材を見出
すべく鋭意検討した結果、特定のフラックス成分を含有
してなるアルミナ質焼結体は上述の目的をほぼ達成し得
る事を見出し、本発明を完成するに至った。In view of these circumstances, the inventors of the present invention conducted extensive studies to find a core material for fuses and windings that has good dimensional accuracy and excellent electrical insulation and thermal conductivity. The present inventors have discovered that a quality sintered body can substantially achieve the above-mentioned objects, and have completed the present invention.
く問題点を解決するための手段〉
すなわち、本発明はアルミナ粉末に対し下記組成のフラ
ックスを２重量％〜１０重量％混合、成形し焼成してな
るヒユーズ巻付用芯材フラックス組成
ＣａＯ： ２ 重量％〜 ２０重量％ＭｇＯ：
２ 重量％〜 ３０重量％５ｉｎｔ ：５Ｑ 重量
％〜 ８０重量％を提供するにある。Means for Solving the Problems> That is, the present invention provides a core material flux for fuse winding, which is obtained by mixing 2% to 10% by weight of a flux having the following composition with alumina powder, forming and firing the core material flux composition CaO: 2 Weight % ~ 20 weight % MgO:
2% to 30% by weight 5int: 5Q to provide 80% by weight.
以下、本発明を更に詳細に説明する。The present invention will be explained in more detail below.
本発明のヒユーズ巻付用芯材は、ＣａＯ約２約２亢量
量％よりなる組成のフラックスをアルミナ粉末に対し約
２重量％〜約１０重景％、好ましくは約２重量％未満８
重量％添加混合し成形焼成してなるアルミナ質焼結体で
ある。The core material for fuse winding of the present invention includes a flux having a composition of about 2% CaO to about 10% by weight, preferably less than about 2% by weight, based on the alumina powder.
It is an alumina sintered body formed by adding and mixing weight percent, forming and firing.
アルミナ粉末に添加するフラックス量が約２重量％未満
の場合には高温クリープ特性に乏しいため焼成の際成形
体の曲がりが矯正されず、焼成後帯られるアルミナ焼結
体の寸法精度が低く好ましくない。If the amount of flux added to the alumina powder is less than about 2% by weight, the high-temperature creep properties will be poor, so the bending of the compact will not be corrected during firing, and the dimensional accuracy of the alumina sintered compact after firing will be low, which is undesirable. .
他方、アルミナ粉末に添加するフラックス量が約１０重
量％を超える場合には、寸法精度は改良されるものの焼
成時、成形体相互の付着が生起し製品歩留りの低下や、
或いは製品の熱伝導性や電気絶縁性が低下し好ましくな
い。On the other hand, if the amount of flux added to the alumina powder exceeds about 10% by weight, although dimensional accuracy is improved, adhesion of the compacts to each other occurs during firing, resulting in a decrease in product yield.
Alternatively, the thermal conductivity and electrical insulation properties of the product may deteriorate, which is undesirable.
アルミナ粉末に添加するフラックスとしては上記組成の
Ｓ ｉｏ＊ 、ＣａＯ３ＭｇＯ混合物が適用されるが、
該混合割合が上記組成範囲外の場合には低融点のガラス
相や高融点のガラス相が生成し、焼成時成形体同士の付
着が生起するとか、焼成が不十分となり満足し得る物性
を有するものは得られない。As the flux added to the alumina powder, a mixture of S io * and CaO3MgO having the above composition is applied.
If the mixing ratio is outside the above composition range, a glass phase with a low melting point or a glass phase with a high melting point will be produced, and the formed bodies may adhere to each other during firing, or the firing may be insufficient, resulting in unsatisfactory physical properties. You can't get anything.
上述のフラックス成分を含有するアルミナ質焼結体の製
造方法は公知のアルミナ質焼結体の製法であればよく、
特に制限を受けるものではないが、通常、平均粒子径約
１μｍ〜約１０μｍ，好ましくは約４μｍ〜約６μｍの
アルミナ粉末とフラックス成分を結合剤、分散剤等の他
の添加剤と十分混練した後、押出成形機を用いて芯材状
に押出成形し、該押出成形物を断面がＶ字型を構成する
セッター、或は半円を構成するセッターに一本づつ、或
は多数本載置し、焼成する． 焼成は電気炉、ガス炉等
公知のものが使用され約り５００℃〜約１７００℃、約
１時間以上焼成すればよい。The method for manufacturing the alumina sintered body containing the above-mentioned flux component may be any known method for manufacturing alumina sintered body,
Although not particularly limited, usually after sufficiently kneading alumina powder with an average particle diameter of about 1 μm to about 10 μm, preferably about 4 μm to about 6 μm, and a flux component with other additives such as a binder and a dispersant. The core material is extruded using an extrusion molding machine, and the extruded product is placed one by one or in large numbers on a setter with a V-shaped cross section or a setter with a semicircular shape. , to be fired. The firing may be carried out using a known furnace such as an electric furnace or a gas furnace at a temperature of about 500°C to about 1700°C for about 1 hour or more.
勿論焼成に先立ち押出成形物を養生、乾燥することをさ
またげない。Of course, it is not necessary to cure and dry the extruded product prior to firing.
フラックスとしては、アルミナ粉末に対し上記範囲とな
るのであれば如何なる形態で添加しても良く特に制限さ
れるものではないが、例えばシリカ粉末、ムライト粉末
、マグネシア粉末、カルシア粉末、カオリン、タルク、
炭酸マグネシウム、炭酸カルシウム等を上記範囲となる
如くアルミナ粉末と各々添加混合してもよいし、予じめ
フラックス成分のみを混合、焼成したものを粉砕後適用
することも可能である。The flux may be added to the alumina powder in any form as long as it falls within the above range and is not particularly limited, but for example, silica powder, mullite powder, magnesia powder, calcia powder, kaolin, talc,
Magnesium carbonate, calcium carbonate, etc. may be added and mixed with the alumina powder within the above range, or it is also possible to mix only the flux component in advance, sinter it, and apply it after pulverizing.
く本発明の効果）
本発明によればアルミナ粉末に特定成分を有するフラッ
クスを特定量添加混合し、成形、焼成することにより熱
伝導性、電気絶縁性及び寸法精度に優れた通常、直径約
０．５鶴〜約２０、長さ約２ｃｍ〜約［ｉｃｅ程度の低
容量のガラス管ヒエーズ巻付用芯材を得ることができる
ため、ガラス管ヒユーズの自動制作化を可能ならしめる
もので、その工業的価値は頗る大なるものである。Effects of the present invention) According to the present invention, a specific amount of flux having a specific component is added to and mixed with alumina powder, and then molded and fired to form a powder with a diameter of approximately 0. Since it is possible to obtain a core material for winding glass tube fuses with a low capacity of about 5 cranes to about 20 mm and a length of about 2 cm to about [ice], it is possible to automate the production of glass tube fuses. Its industrial value is enormous.
〈実施例〉 以下本発明を実施例により更に詳細に説明する。<Example> The present invention will be explained in more detail below with reference to Examples.
実施例１
平均粒子径約５μｍのアルミナ粉末（ＡＭ−２１ 、住
友化学工業■製）１００重量部に対し平均粒子径１μｍ
のカオリン粉末（ＳｉＯ□５０重景％、Ａｌｘ０ｉ４０
重景％、Ｃａ０Ｏ．５重量％、Ｍ ｇ Ｏ ０． ５重
量％残部その他微量成分）平均粒子径１ｕｍ炭酸マグネ
シア粉末及び平均粒子径０．５μｍの炭酸カルシウム粉
末を第１表に示すフラックス組成でかつ第１表に示す割
合になる如く添加しオムニミキサーで十分混合した後、
粉末１００重量部に対し水１８重置部、メチルセルロー
ス４重量部及び潤滑剤としてユニループ（日本油脂製）
を４重量部添加しニーダで混練した後、押出成形機を用
いて直径約１ｍの棒状体を押出し、４１間隔で切断しセ
ンター上にＲＷし、空気中１６００℃で２時間焼結した
。Example 1 An average particle size of 1 μm per 100 parts by weight of alumina powder (AM-21, manufactured by Sumitomo Chemical Co., Ltd.) with an average particle size of about 5 μm
Kaolin powder (SiO□50%, Alx0i40
Heavy weight %, Ca0O. 5% by weight, M g O 0. (Remaining 5% by weight and other minor components) Magnesia carbonate powder with an average particle size of 1 um and calcium carbonate powder with an average particle size of 0.5 μm were added in the flux composition shown in Table 1 and in the proportions shown in Table 1 using an omni mixer. After mixing thoroughly,
For 100 parts by weight of powder, 18 parts by weight of water, 4 parts by weight of methyl cellulose, and Uniloop (manufactured by NOF) as a lubricant.
After adding 4 parts by weight of and kneading with a kneader, a rod-shaped body with a diameter of about 1 m was extruded using an extruder, cut at 41 intervals, RWed on the center, and sintered in air at 1600° C. for 2 hours.
得られた焼結体の物性を第１表中に示す。The physical properties of the obtained sintered body are shown in Table 1.
尚、物性評価に於ける表現中、寸法精度Ｏは±０．０１
＋＋ｎシ、Δは０．０３ｆｌ＞、×は＞０．０５ｎを表
し、熱伝導率Ｏは０．０５ ｃａｌ／ｃｍ、ｓｅｃ＜、
Δは０．０３〜０．０５ ｃａｌ／ａｍ、ｓｅｃ、 ｘ
は０．０３＞ｃａｔ／ｃｕ、ｓｅｃを表し、電気絶縁性
は＞１ＱＩ３Ω国を○とした。In addition, in the expression in physical property evaluation, the dimensional accuracy O is ±0.01
++n, Δ is 0.03 fl>, × is >0.05n, thermal conductivity O is 0.05 cal/cm, sec<,
Δ is 0.03 to 0.05 cal/am, sec, x
represents 0.03>cat/cu, sec, and countries with electrical insulation properties of >1QI3Ω are marked as ○.
第１表 ・実験隊中Ｒは比較例を表す。Table 1 ・Experimental team member R represents a comparative example.
Claims (2)
量％〜１０重量％混合、成形し焼成してなるヒューズ巻
付用芯材。 フラックス組成 ＣａＯ：２重量％〜２０重量％ ＭｇＯ：２重量％〜３０重量％ ＳｉＯ＿２：５０重量％〜８０重量％(1) A core material for fuse winding made by mixing 2% to 10% by weight of a flux having the following composition with alumina powder, shaping and firing. Flux composition CaO: 2% to 20% by weight MgO: 2% to 30% by weight SiO_2: 50% to 80% by weight
いることを特徴とする特許請求の範囲第１項記載のヒュ
ーズ巻付用芯材。(2) The core material for fuse winding according to claim 1, characterized in that alumina powder having an average particle size of 1 μm to 10 μm is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62129409A JPS63291859A (en) | 1987-05-25 | 1987-05-25 | Core material for winding fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62129409A JPS63291859A (en) | 1987-05-25 | 1987-05-25 | Core material for winding fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63291859A true JPS63291859A (en) | 1988-11-29 |
Family
ID=15008828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62129409A Pending JPS63291859A (en) | 1987-05-25 | 1987-05-25 | Core material for winding fuse |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63291859A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0345555A (en) * | 1989-07-11 | 1991-02-27 | Nippon Cement Co Ltd | Alumina porcelain composition |
| US6788185B2 (en) * | 2002-01-17 | 2004-09-07 | Nec Tokin Corporation | Powder core and high-frequency reactor using the same |
-
1987
- 1987-05-25 JP JP62129409A patent/JPS63291859A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0345555A (en) * | 1989-07-11 | 1991-02-27 | Nippon Cement Co Ltd | Alumina porcelain composition |
| US6788185B2 (en) * | 2002-01-17 | 2004-09-07 | Nec Tokin Corporation | Powder core and high-frequency reactor using the same |
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