CN101712220A - Thermal bimetal material - Google Patents
Thermal bimetal material Download PDFInfo
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- CN101712220A CN101712220A CN200810200901A CN200810200901A CN101712220A CN 101712220 A CN101712220 A CN 101712220A CN 200810200901 A CN200810200901 A CN 200810200901A CN 200810200901 A CN200810200901 A CN 200810200901A CN 101712220 A CN101712220 A CN 101712220A
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Abstract
The invention relates to a thermal bimetal material which comprises an active layer material, a middle layer material and a passive layer material. The thermal bimetal material is characterized in that the passive layer material is iron-nickel alloy, the middle layer material is electro pure iron, and the active layer material is iron-nickel-manganese alloy; and the volume percents of the three layers of materials in the integral material are as follows: the active layer material accounts for 30 percent, the middle layer material accounts for 40 percent, and the passive layer material accounts for 30 percent. The thermal bimetal material has the advantages that after the active layer material, the middle layer material and the passive layer material are proportioned according to the sizes and compounded by a thermal compound machine, the flexivity of the produced thermal bimetal material is 24.5+/-5 percentMK-1, and the resistivity is 25+/-5 percent mu omega cm; and the cost of the materials is reduced by more than 15 percent. The invention changes the kinds of component materials (the middle layer material and the active layer material) and the volume percent of each component material in the composite material and has easy utilization of the compound machining of the thermal compound machine, good quality and low price.
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.
A kind of thermal bimetal material (TB127/25) commonly used is formed (see figure 2) by three kinds of materials in low-voltage electrical apparatus at present, be respectively that active layers material 11 is that pure nickel and passive layer material 13 are iron-nickel alloy for iron-nickel alloy, intermediate layer material 12, because the price of intermediate layer material 12 is very high, causes totle drilling cost very high.Therefore demand urgently needing a kind of novel high thermo bimetal's composite of valency low-quality of exploitation, 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 the expensive problem of thermo bimetal's composite in the prior art, provide a kind of valency low-quality high and be easy to thermo bimetal's composite of Compound Machining.The present invention designs thermal bimetal material, comprises active layers material, intermediate layer material and passive layer material, it is characterized in that: the passive layer material is iron-nickel alloy (FeNi
36), intermediate layer material is an electrical pure iron, the active layers material is ferrum-nickel-manganese alloy (FeNi
20Mn
6).The percent by volume that trilaminate material accounts for integral material is respectively the active layers material and occupies 25%-35%, and intermediate layer material occupies 35%-45%, and the passive layer material occupies 25%-35%.The percent by volume that trilaminate material accounts for integral material is respectively the active layers material and occupies 30%, and intermediate layer material occupies 40%, and the passive layer material occupies 30%.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 24.5 ± 5%MK
-1, resistivity is 25 ± 5% μ Ω cm; Material cost has descended and (has pressed in July, 2008 the Changjiang river metal average price calculating) more than 15%.The present invention has changed the kind of the group element material in the composite (intermediate layer material and active layers material) and the percent by volume of each constituent element layer material, and advantage is Compound Machining and the super quality and competitive price that are easy to utilize warm compounding machine.
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 (TB127/25) is formed structural representation
Below in conjunction with accompanying drawing and example the utility model is elaborated.
The specific embodiment
Comprise active layers material, intermediate layer material and passive layer material among the figure, it is characterized in that: the passive layer material is iron-nickel alloy (FeNi
36), intermediate layer material is electrical pure iron (main chemical compositions outside the deironing sees Table 1), the active layers material is ferrum-nickel-manganese alloy (FeNi
20Mn
6).The percent by volume that trilaminate material accounts for integral material is respectively the active layers material and occupies 25%-35%, and intermediate layer material occupies 35%-45%, and the passive layer material occupies 25%-35%.
Embodiment 1: the percent by volume that trilaminate material accounts for integral material is respectively the active layers material and occupies 30%, and intermediate layer material occupies 40%, and the passive layer material occupies 30%.
Embodiment 2: the percent by volume that trilaminate material accounts for integral material is respectively the active layers material and occupies 25%, and intermediate layer material occupies 45%, and the passive layer material occupies 30%.
Embodiment 3: the percent by volume that trilaminate material accounts for integral material is respectively the active layers material and occupies 35%, and intermediate layer material occupies 40%, and the passive layer material occupies 25%.
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 24.5 ± 5%, resistivity μ Ω cm is 25 ± 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.
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 |
Claims (3)
1. thermal bimetal material comprises active layers material, intermediate layer material and passive layer material, it is characterized in that: the passive layer material is iron-nickel alloy (FeNi
36), intermediate layer material is an electrical pure iron, the active layers material is ferrum-nickel-manganese alloy (FeNi
20Mn
6).
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 25%-35%, and intermediate layer material occupies 35%-45%, and the passive layer material occupies 25%-35%.
3. by the described thermal bimetal material of claim 2, it is characterized in that: the percent by volume that trilaminate material accounts for integral material is respectively the active layers material and occupies 30%, and intermediate layer material occupies 40%, and the passive layer material occupies 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810200901A CN101712220A (en) | 2008-10-08 | 2008-10-08 | Thermal bimetal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810200901A CN101712220A (en) | 2008-10-08 | 2008-10-08 | Thermal bimetal material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101712220A true CN101712220A (en) | 2010-05-26 |
Family
ID=42416398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810200901A Pending CN101712220A (en) | 2008-10-08 | 2008-10-08 | Thermal bimetal material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101712220A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3102793A (en) * | 1960-03-14 | 1963-09-03 | Chace Co W M | Thermostat metal |
| US3902867A (en) * | 1974-07-01 | 1975-09-02 | Texas Instruments Inc | Oxide dispersed high purity nickel for use in thermostat metals |
-
2008
- 2008-10-08 CN CN200810200901A patent/CN101712220A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3102793A (en) * | 1960-03-14 | 1963-09-03 | Chace Co W M | 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 (3)
| Title |
|---|
| 刘育琴; 刘冠华;: "电阻型双金属材料研制", 《上海钢研 》 * |
| 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》 * |
| 蔡平海;: "电阻系列热双金属的研究", 《上海钢研》 * |
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Application publication date: 20100526 |