CN101648448A - Thermal bimetal material - Google Patents
Thermal bimetal material Download PDFInfo
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- CN101648448A CN101648448A CN200810041654A CN200810041654A CN101648448A CN 101648448 A CN101648448 A CN 101648448A CN 200810041654 A CN200810041654 A CN 200810041654A CN 200810041654 A CN200810041654 A CN 200810041654A CN 101648448 A CN101648448 A CN 101648448A
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Abstract
The invention relates to a thermal bimetal material, which comprises an active-layer material, an interlayer material and a passive-layer material. The thermal bimetal material is characterized in that the active-layer material is iron-nickel alloy; the interlayer material is electrical pure iron; the passive-layer material is nickel-manganese-copper alloy; among overall materials, the active-layer material accounts for 37+/-5 percent of the total volume of the materials; the interlayer material accounts for 30+/-5 percent of the total volume of the materials; and the passive-layer material accounts for 33+/-5 percent of the total volume of the materials. The invention has the advantages that the produced thermal bimetal material has the temperature curvature of 19+/-5 MK<-1> and the resistivity of 33+/-5 mu omega cm; the maximum resistivity deviation of a whole roll of the thermal bimetal material is 3.75 percent; the finished product rate is increased by over 8 percent; and materialcost is reduced by over 15 percent. The thermal bimetal material changes the type of the interlayer material in composite material and the percentages by volume of every component-layer material, thereby helping to utilize combined machining of temperature compound machines, raise finished product rate and ensure high quality and low price of products.
Description
Technical field
The present invention relates to a kind of bimetallic material, particularly a kind of thermal bimetal material.
Background technology
Thermal bimetal material is a kind of functional temperature-sensitive material, is made up of the material of two or more different heat expansion coefficient, and it can produce the variation of shape according to variations in temperature.Be mainly used in fields such as temperature controller, low-voltage electrical apparatus and instrument and meter, as be used for the overload protection of low-voltage circuit breaker, when current overload, it is crooked to have caused the material temperature rise that bimetal leaf is produced, thereby makes circuit turn-on or disconnection.
Thermal bimetal material (TB200/30) commonly used is formed (see figure 2) by three kinds of materials in low-voltage electrical apparatus at present, be respectively active layers material (iron-nickel alloy) 11, intermediate layer material (copper alloy) 12 and passive layer material (manganin manganin alloy) 13, because relatively thin (account for cumulative volume 5%) of intermediate layer material 12 must be through the repeatedly compound requirement that could satisfy physical property when producing; Therefore lumber recovery is very low, the uniformity of material property also bad (deviation of whole volume resistivity is up to 5.5%).Therefore demand urgently needing a kind of novel thermo bimetal's composite of exploitation, be easy to realize mass production and valency low-quality height, to satisfy the demand of low-voltage electrical apparatus to thermal bimetal material.
Summary of the invention
The objective of the invention is mainly to solve in the prior art thermo bimetal's composite because of the thin existing Compound Machining difficulty of intermediate layer material, lumber recovery is low and the relatively poor problem of physical property (resistivity) uniformity, and a kind of Compound Machining and physical property uniformity thermo bimetal's composite preferably that is easy to is provided.
The present invention designs thermal bimetal material, comprises active layers material, intermediate layer material and passive layer material, it is characterized in that: the active layers material is iron-nickel alloy (FeNi
36), intermediate layer material is an electrical pure iron, the passive layer material is manganin manganin alloy (Mn
72Ni
10Cu
18).The percent by volume that trilaminate material accounts for integral material is respectively the active layers material and occupies 37 ± 5%, and intermediate layer material occupies 30 ± 5%, and the passive layer material occupies 33 ± 5%.Advantage of the present invention be with above-mentioned active layers material, intermediate layer material and passive layer material by above-mentioned size proportioning, the flexivity of the thermal bimetal material of being produced after warm compounding machine is compound is 19.0 ± 5%MK
-1, resistivity is 33 ± 5% μ Ω cm.The deviation of whole volume (about 1000kg) resistivity is 3.75% to the maximum, and finished product rate has improved more than 8%; Material cost has descended and (has pressed in July, 2008 the Changjiang river metal average price calculating) more than 15%.
The present invention changed the group element material in the composite (intermediate layer material) kind and the percent by volume of each constituent element layer material, advantage is the Compound Machining that is easy to utilize warm compounding machine, the raising of lumber recovery and the super quality and competitive price of product.
Description of drawings
Accompanying drawing 1 is that material of the present invention is formed structural representation;
Accompanying drawing 2 is that existing thermal bimetal material (TB200/30) is formed structural representation
Below in conjunction with accompanying drawing and example the utility model is elaborated.
The specific embodiment
Comprise active layers material 1, intermediate layer material 2 and passive layer material 3 among the figure, it is characterized in that: active layers material 1 is iron-nickel alloy (FeNi
36), intermediate layer material 2 is electrical pure iron (main chemical compositions sees Table 1), passive layer material 3 is manganin manganin alloy (Mn
72Ni
10Cu
18).The percent by volume that accounts for integral material of trilaminate material is respectively the active layers material and occupies 37 ± 5%, and intermediate layer material occupies 30 ± 5%, and the passive layer material occupies 33 ± 5%.
Table 1 intermediate layer main chemical compositions table
| Chemical composition | ??C | ??Si | ??Mn | ??P | ??S | ??Alt |
| Content % | ??≤0.060 | ??≤0.030 | ??≤0.35 | ??≤0.020 | ??≤0.030 | ??0.025～0.07 |
The warm composite rolling mill (Chinese patent 200520042658.5) that utilizes our company to be applied in 2005 carries out warm Compound Machining to above-mentioned three kinds of metal materials, make the spacing between the trilaminate material reach the distance of atom level, thereby make the interface bond strength of trilaminate material reach the body intensity of matrix material.
Press above-mentioned size proportioning, the flexivity MK of the thermal bimetal material of after warm compounding machine is rolling, being produced with above-mentioned active layers material, intermediate layer material and passive layer material
-1Be 19.0 ± 5%, resistivity μ Ω cm is 33 ± 5%, can satisfy the requirement of low-voltage electrical apparatus.
Thermal bimetal material of the present invention is mainly used in the overload protection of low-voltage circuit breaker; When current overload, caused the temperature rise of material, because active layers material coefficient of thermal expansion coefficient is big, passive layer material coefficient of thermal expansion coefficient is little, thereby makes bimetal leaf produce bending, has caused the conducting or the disconnection of circuit.
Claims (2)
1, thermal bimetal material comprises active layers material, intermediate layer material and passive layer material, it is characterized in that: the active layers material is iron-nickel alloy (FeNi
36), intermediate layer material is an electrical pure iron, the passive layer material is manganin manganin alloy (Mn
72Ni
10Cu
18).
2, by the described thermal bimetal material of claim 1, it is characterized in that: the percent by volume that trilaminate material accounts for integral material is respectively the active layers material and occupies 37 ± 5%, and intermediate layer material occupies 30 ± 5%, and the passive layer material occupies 33 ± 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041654A CN101648448A (en) | 2008-08-13 | 2008-08-13 | Thermal bimetal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041654A CN101648448A (en) | 2008-08-13 | 2008-08-13 | Thermal bimetal material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101648448A true CN101648448A (en) | 2010-02-17 |
Family
ID=41670827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810041654A Pending CN101648448A (en) | 2008-08-13 | 2008-08-13 | Thermal bimetal material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101648448A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105112725A (en) * | 2015-09-21 | 2015-12-02 | 无锡清杨机械制造有限公司 | Thermal bimetal material |
| CN110077053A (en) * | 2019-04-30 | 2019-08-02 | 温州宏丰电工合金股份有限公司 | A kind of Mn72Cu18Ni10 series thermal bimetal material and preparation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3102793A (en) * | 1960-03-14 | 1963-09-03 | Chace Co W M | Thermostat metal |
| US3560171A (en) * | 1968-05-01 | 1971-02-02 | Texas Instruments Inc | Thermostat metal |
| US3902867A (en) * | 1974-07-01 | 1975-09-02 | Texas Instruments Inc | Oxide dispersed high purity nickel for use in thermostat metals |
-
2008
- 2008-08-13 CN CN200810041654A patent/CN101648448A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3102793A (en) * | 1960-03-14 | 1963-09-03 | Chace Co W M | Thermostat metal |
| US3560171A (en) * | 1968-05-01 | 1971-02-02 | Texas Instruments Inc | Thermostat metal |
| US3902867A (en) * | 1974-07-01 | 1975-09-02 | Texas Instruments Inc | Oxide dispersed high purity nickel for use in thermostat metals |
Non-Patent Citations (1)
| Title |
|---|
| 徐卓辉， 林武辉: "电阻系列热双金属材料设计与制造", 《低压电器》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105112725A (en) * | 2015-09-21 | 2015-12-02 | 无锡清杨机械制造有限公司 | Thermal bimetal material |
| CN110077053A (en) * | 2019-04-30 | 2019-08-02 | 温州宏丰电工合金股份有限公司 | A kind of Mn72Cu18Ni10 series thermal bimetal material and preparation method |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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Application publication date: 20100217 |