JPH0542487B2 - - Google Patents
Info
- Publication number
- JPH0542487B2 JPH0542487B2 JP60180077A JP18007785A JPH0542487B2 JP H0542487 B2 JPH0542487 B2 JP H0542487B2 JP 60180077 A JP60180077 A JP 60180077A JP 18007785 A JP18007785 A JP 18007785A JP H0542487 B2 JPH0542487 B2 JP H0542487B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- temperature fuse
- sample
- wire
- break
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 19
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 2
- 229910006404 SnO 2 Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000000155 melt Substances 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N CuO Inorganic materials [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
- H01H2037/768—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material characterised by the composition of the fusible material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
- H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
Landscapes
- Fuses (AREA)
Description
（産業上の利用分野）
本発明は、温度ヒユーズ用材料に係り、詳しく
は加熱されている物体が所定の温度以上に達した
時に溶けて断線し、電気回路を遮断するための温
度ヒユーズ用材料に関する。
（従来の技術）
従来、温度ヒユーズ用材料としては、純Agを
用いていた。
（発明が解決しようとする問題点）
ところで、純Agは、長時間融点近くで加熱さ
れると、Agの結晶粗大により軟化して、自重に
より変形が生じる。変形が大きいと、Agが破断
し、所定温度に達して溶断した時と同じ状態にな
り、また、自重により変わつた曲り方を生じてし
まつた場合は、所定の温度を超えても、Agは溶
けてはいるが溶断しない等の誤動作になる欠点が
あつた。
そこで、本発明は、純Agの融点近くで長時間
加熱されても、Agの結晶粗大化が抑制されて、
軟化変形の無い温度ヒユーズ用材料を提供しよう
とするものである。
（問題点を解決するための手段）
上記問題点を解決するための本発明の温度ヒユ
ーズ用材料は、Agに、Al2O3，CaO，CdO，
SiO2，CuO，ZnO，SnO2の少なくとも一種が0.5
〜20wt％含有して成るものである。
本発明の温度用材料において、Agに上記金属
酸化物の少なくとも一種を0.5〜20wt％含有させ
る理由は、Agを長時間加熱した際のAg結晶粗大
化を抑制して、軟化変形を防止する為で、0.5wt
％未満では軟化変形を防止することができず、
20wt％を超えるとAgは％溶けても金属酸化物に
より強度が保たれて断線せず、また塑性加工が劣
下して所要の形状に加工することが困難となり、
その上加工後酸化処理するものにあつては酸化に
よる体積膨張により割れが生じるからである。
（実施例）
本発明による温度ヒユーズ用材料の具体的な実
施例を従来例と共に説明する。
下記の表の左側欄に示す成分組成の実施例１〜
８は、−250メツシユのAg粉と−250メツシユの金
属酸化物粉末を、Ｖ型ミキサーに入れ、60回／分
で１時間かけて混合し、次に圧縮成形して直径40
mm、長さ100mmのインゴツトを成形し、次いでこ
の成形品をArガス雰囲気中、900℃、１時間で焼
結し、次にこのインゴツトを押出機、溝ロール、
スエージヤーで直径５mmの棒状に加工し、次いで
直径0.5mmまで伸線加工したもので、この実施例
１〜８の温度ヒユーズ用材料の緻密度は99％以上
である。
また、下記の表の左側欄に示す成分組成の実施
例９〜17は、Al，Ca，Si，Cu，Snの場合は真空
中（１／2Ar）、Zn，Cdの場合は大気中で溶解
し、直径40mm、長さ100mmのインゴツトを鋳造し、
次にこのインゴツトを押出機、溝ロール、スエー
ジヤーで直径５mmの棒状に加工し、次いで直径
0.5mmまで伸線加工した後、600℃、９気圧の酸素
雰囲気中で６時間酸化処理したものである。
然して、これら実施例１〜17の温度ヒユーズ用
材料と純Agの従来例の温度ヒユーズ用材料を加
熱よる評価試験をおこなつた処、下記の表の右側
欄に示すような結果を得た。評価試験の方法は、
第１図に示す如く試料１を幅４mm、長さ５mmのＵ
字型に屈曲し、これの両端をステンレス鋼のリー
ド線２に接続し、リード線２の一部と試料１を第
２図に示す如く透明石英管３に入れると共にAr
ガスを封入して閉塞し、この透明石英管３を加熱
炉４内に入れ、リード線２にはランプ５及び電池
（3V）６を備えて回路を形成し、加熱炉４内の温
度を上昇させて、試料１の状態を検査する方法で
ある。
(Industrial Application Field) The present invention relates to a material for a temperature fuse, and more specifically, a material for a temperature fuse that melts and breaks the electrical circuit when a heated object reaches a predetermined temperature or higher. Regarding. (Prior Art) Conventionally, pure Ag has been used as a material for a temperature fuse. (Problems to be Solved by the Invention) By the way, when pure Ag is heated near its melting point for a long period of time, it becomes soft due to coarse Ag crystals and deforms due to its own weight. If the deformation is large, the Ag will break and become in the same state as when it reaches a certain temperature and melts, and if it bends in an unusual way due to its own weight, the Ag will not bend even after the specified temperature is exceeded. It had some drawbacks, such as melting but not cutting, which could lead to malfunctions. Therefore, the present invention suppresses coarsening of Ag crystals even when heated near the melting point of pure Ag for a long time.
The object is to provide a material for a temperature fuse that does not undergo softening and deformation. (Means for Solving the Problems) The temperature fuse material of the present invention for solving the above problems includes Ag, Al 2 O 3 , CaO, CdO,
At least one of SiO 2 , CuO, ZnO, SnO 2 is 0.5
It contains ~20wt%. In the temperature material of the present invention, the reason why Ag contains 0.5 to 20 wt% of at least one of the above metal oxides is to suppress coarsening of Ag crystals and prevent softening deformation when Ag is heated for a long time. So, 0.5wt
If it is less than %, softening deformation cannot be prevented,
If the amount exceeds 20wt%, even if Ag is melted, the strength will be maintained by the metal oxide and the wire will not break, and the plastic working will deteriorate and it will be difficult to process into the desired shape.
Furthermore, if the material is subjected to oxidation treatment after processing, cracks may occur due to volumetric expansion due to oxidation. (Example) Specific examples of the temperature fuse material according to the present invention will be described together with conventional examples. Examples 1 to 1 of the component compositions shown in the left column of the table below
8, -250 mesh Ag powder and -250 mesh metal oxide powder were placed in a V-type mixer, mixed at 60 times/minute for 1 hour, and then compression molded to form a diameter of 40 mm.
An ingot with a length of 100 mm and a length of 100 mm was formed, and then this formed product was sintered at 900°C for 1 hour in an Ar gas atmosphere.
The material for temperature fuses of Examples 1 to 8 has a density of 99% or more, which was processed into a rod shape with a diameter of 5 mm using a swager, and then wire-drawn to a diameter of 0.5 mm. In addition, Examples 9 to 17 with the component compositions shown in the left column of the table below are dissolved in vacuum (1/2 Ar) for Al, Ca, Si, Cu, and Sn, and in the atmosphere for Zn and Cd. Then, we cast an ingot with a diameter of 40 mm and a length of 100 mm.
Next, this ingot is processed into a rod shape with a diameter of 5 mm using an extruder, groove roll, and swager.
After wire drawing to 0.5 mm, it was oxidized at 600°C in an oxygen atmosphere of 9 atm for 6 hours. When the temperature fuse materials of Examples 1 to 17 and the conventional temperature fuse material of pure Ag were subjected to heating evaluation tests, the results shown in the right column of the table below were obtained. The evaluation test method is
As shown in Figure 1, sample 1 was
Connect both ends to a stainless steel lead wire 2, put a part of the lead wire 2 and the sample 1 into a transparent quartz tube 3 as shown in FIG.
The transparent quartz tube 3 is sealed and filled with gas, and placed in the heating furnace 4. The lead wire 2 is equipped with a lamp 5 and a battery (3V) 6 to form a circuit, and the temperature inside the heating furnace 4 is increased. In this method, the condition of sample 1 is inspected.
【表】
上記の表の右側欄の評価を、リード線２に対す
る試料１の状態を該３図ａ乃至ｄによつて説明す
ると、ａ図は試料１の変形状態、ｂ図は試料が変
形により断線した状態、ｃ図は試料１の一部が溶
け落た状態。ｄ図は試料１が溶けても断線しない
状態を示している。
上記の表で明らかなように従来例の温度ヒユー
ズ用材料は、長時間融点近くで加熱されると、軟
化変形して断線したり、また変形により変わつた
曲り方をすると所定の温度に達して溶けても断線
せず通電して誤動作が生じるが、実施例１〜17の
温度ヒユーズ用材料は、長時間Agの融点近くで
加熱されても、軟化変形することがないので断線
せず、また所定の温度に達すると正常に溶けて断
線するので、誤動作を生じることがない。
（発明の効果）
以上詳記した通り本発明の温度ヒユーズ用材料
は、長時間高温中で軟化変形することのない強度
を保つて断線せず、Agの融点では溶断するので、
温度ヒユーズ用材料としては、極めて有効で、従
来の純Agの温度ヒユーズ用材料にとつて代わる
こときできる画期的なものといえる。[Table] To explain the evaluation in the right column of the above table, the state of sample 1 with respect to lead wire 2 is explained using Figures a to d. Figure c shows a state where the wire is broken, and part of sample 1 has melted off. Figure d shows a state where the wire does not break even if sample 1 melts. As is clear from the table above, when the conventional temperature fuse materials are heated near their melting point for a long time, they soften and deform and break, and when they bend in a different way due to deformation, they reach the specified temperature. Even if it melts, it will not break and the current will flow, causing malfunctions, but the temperature fuse materials of Examples 1 to 17 do not soften and deform even when heated near the melting point of Ag for a long time, so they do not break, and When it reaches a predetermined temperature, it melts and disconnects normally, so there is no possibility of malfunction. (Effects of the Invention) As detailed above, the temperature fuse material of the present invention maintains the strength to prevent softening and deformation in high temperatures for a long time, does not break, and melts at the melting point of Ag.
It is extremely effective as a material for temperature fuses, and can be said to be an epoch-making material that can replace the conventional pure Ag material for temperature fuses.
第１図は温度ヒユーズ用材料の評価試験方法に
おける試料の取付け方を示す図、第２図は評価試
験方法の概略図、第３図は評価試験における試料
の状態を示すもので、ａは試料の変形状態、ｂは
変形により断線した状態、ｃは正常な断線状態、
ｄは試料が溶けても断線しない状態である。
Figure 1 shows how to attach a sample in the evaluation test method for temperature fuse materials, Figure 2 is a schematic diagram of the evaluation test method, and Figure 3 shows the state of the sample in the evaluation test. deformed state, b is a state where the wire is broken due to deformation, c is a normal broken state,
d is a state in which the wire does not break even if the sample melts.
Claims (1)
ZnO，SnO2の少なくとも一種が0.5〜20wt％含有
する温度ヒユーズ用材料。1 Ag, Al 2 O 3 , CaO, CdO, SiO 2 , CuO,
A temperature fuse material containing 0.5 to 20 wt% of at least one of ZnO and SnO 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18007785A JPS6240331A (en) | 1985-08-16 | 1985-08-16 | Thermal fuse material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18007785A JPS6240331A (en) | 1985-08-16 | 1985-08-16 | Thermal fuse material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6240331A JPS6240331A (en) | 1987-02-21 |
| JPH0542487B2 true JPH0542487B2 (en) | 1993-06-28 |
Family
ID=16077052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18007785A Granted JPS6240331A (en) | 1985-08-16 | 1985-08-16 | Thermal fuse material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6240331A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09129116A (en) * | 1995-10-30 | 1997-05-16 | S O C Kk | Fusible body for fuse |
| WO2003009323A1 (en) * | 2001-07-18 | 2003-01-30 | Nec Schott Components Corporation | Thermal fuse |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53149667A (en) * | 1977-06-01 | 1978-12-27 | Sumitomo Electric Industries | Electric contact material and method of producing same |
| JPS5893848A (en) * | 1981-11-28 | 1983-06-03 | Tanaka Kikinzoku Kogyo Kk | Electrical contact material |
| JPS59159948A (en) * | 1983-03-03 | 1984-09-10 | Sumitomo Electric Ind Ltd | Sintered electrical contact material and its manufacture |
-
1985
- 1985-08-16 JP JP18007785A patent/JPS6240331A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53149667A (en) * | 1977-06-01 | 1978-12-27 | Sumitomo Electric Industries | Electric contact material and method of producing same |
| JPS5893848A (en) * | 1981-11-28 | 1983-06-03 | Tanaka Kikinzoku Kogyo Kk | Electrical contact material |
| JPS59159948A (en) * | 1983-03-03 | 1984-09-10 | Sumitomo Electric Ind Ltd | Sintered electrical contact material and its manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6240331A (en) | 1987-02-21 |
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