CN102517474A - Resistance material for prolonging service life of overheated element - Google Patents
Resistance material for prolonging service life of overheated element Download PDFInfo
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- CN102517474A CN102517474A CN2011103357553A CN201110335755A CN102517474A CN 102517474 A CN102517474 A CN 102517474A CN 2011103357553 A CN2011103357553 A CN 2011103357553A CN 201110335755 A CN201110335755 A CN 201110335755A CN 102517474 A CN102517474 A CN 102517474A
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Abstract
The invention discloses a resistance material for prolonging the service life of an overheated element. The resistance material mainly comprises Ni, Si, Mn and Ti. Under the condition that the resistivity of a prepared resistance alloy is ensured, the high-temperature service life of the resistance material is prolonged remarkably.
Description
Technical field
The present invention relates to a kind of resistive material, particularly a kind of thermoelectric converter resistive material in work-ing life that prolonged.
Background technology
Nickel aluminium heating resistor alloy is applied to the production overheating protection and the accurate overheating protection element of control current overload, prevent effectively (motor, X-former ... etc.) produce because of electric current is excessive overheated.Because electric heating apparatuss such as water dispenser, water-heater, sandwich bread baker, dishwasher, drying machine, sterilizing-cabinet, microwave oven, electric coffee pot, electric caldron, refrigerator, air-conditioning, gluing machine, office equipment, car seat heater are widely used.
Nickel aluminium heating resistor alloy working temperature is about 1200 ℃; Have high hot strength, resistance to high temperature oxidation, heat and corrosion resistant performance when requiring alloy material work, also possess the high reliability of good fatigue property, fracture toughness property, plasticity, structure stability, work etc. simultaneously.The nickel aluminium heating wire material that generally uses at present generally has two types; Corresponding to different overheating protection element models; First kind is the Ni-Si-Mn-Al alloy, and 20 ℃ resistivity is 0.31 μ Ω .m, though the resistivity of this type material satisfies above-mentioned requirements; But the life-span has only 30min in the time of 1250 ℃, can't satisfy the standard of least life 1.5h; Another kind is the Ni-Si-Mn ternary alloy, and 20 ℃ resistivity is 0.23 μ Ω .m, and there is 10h in the life-span during 1200 ℃ of this material, can't satisfy the standard of the desired least life 15h of this overheating protection element.
Summary of the invention
The purpose of this invention is to provide a kind of thermoelectric converter resistive material in work-ing life that prolonged, said material is under the situation that guarantees resistivity, and high temperature service life is improved significantly.
The resistive material that prolonged thermoelectric converter work-ing life of the present invention is made up of Ni, Si, Mn, Ti, and the mass percentage content of each component is: Si:0.5～3.0%; Mn:0.02～1.0%; Ti:0.02～0.5%; Ni: surplus.
The present invention's technical scheme preferably is that the mass percentage content of said each component of material is: Si:2.3～2.5%; Mn:0.1～0.5%; Ti:0.05～0.15%; Ni: surplus.
The resistivity that said material is 20 ℃ is 0.19 μ Ω .m～0.25 μ Ω .m.
Advantage of the present invention is:
After adding the Ti element in the alloy; Can form tangible intracrystalline to alloy and strengthen, improve the intensity of alloy, at high temperature the Ti element can stop grain fineness number to be grown up simultaneously; Improve the high-temperature stability of alloy; Thereby reach the purpose that improves high temperature service life, the adding of simultaneously a small amount of Ti element is very little to the alloy resistivity effects, also can not cause deterioration to the hot workability of alloy simultaneously.
Embodiment
The proportioning of the constituent mass per-cent of the resistive material that prolonged thermoelectric converter work-ing life according to the invention is as shown in table 1; Material according to table 1 proportioning is smelted in vacuum induction furnace; Adopt argon gas to protect (also can adopt intermediate frequency, electroslag melting);--hot rolling--drawing---annealing promptly gets nickel aluminium heating resistor alloy according to the invention through forge hot.The concrete preparation method of said heating resistor material is following:
1) adopt vacuum induction melting perhaps to adopt the above-mentioned alloy of mode melting of intermediate frequency+esr, the adding of each element can adopt pure metal to add, and also can adopt the master alloy form to add.
2) above-mentioned alloy is carried out drawing after through forge hot, hot rolling, thermal treatment, again through thermal treatment repeatedly with pull to the silk material of required specification.
The composition (content) of table 1 nickel manganese of the present invention titanium heating resistor alloy material
With the finished product that the above embodiment of the present invention 1-3 material is processed, the finished product that comparative example 1-2 material is processed is done the mechanicl test of metal, test-results such as table 2:
| Performance | Tensile strength (MPa) | Unit elongation (%) |
| Embodiment 1 | ?452 | 31 |
| Embodiment 2 | ?472 | 32 |
| Embodiment 3 | ?466 | 34 |
| Comparative example 1 | ?524 | 32 |
| Comparative example 2 | ?423 | 30 |
The finished product that the above embodiment of the present invention 1-3 material is processed; The finished product that comparative example 1-2 material is processed is done the mechanicl test of metal and can be found out; Its tensile strength of finished product that embodiment 1-3 material is processed increases, and the finished product that unit elongation and comparative example 1-2 material are processed is basic identical.
With the finished product that the above embodiment of the present invention 1-2 material is processed, the finished product that comparative example 1 material is processed is done 1250 ℃ of heating longevity tests of metal; The finished product that embodiment 3 materials are processed, the finished product that comparative example 2 materials are processed are done 1200 ℃ of heating longevity tests of metal.The condition of its test is: alloy silk energising 2min, outage 2min, and circulation repeatedly, up to the fracture of silk material, silk material round-robin number of times * make-and-break time is the life-span of heating wire before the fracture, and its lifetime results is as shown in table 3.
Table 3 heating wire longevity test of the present invention
| Performance | The heating wire life-span (h) |
| Embodiment 1 | ?39 |
| Embodiment 2 | ?40 |
| Embodiment 3 | ?43 |
| Comparative example 1 | ?1.4 |
| Comparative example 2 | ?21 |
Can be found out that by table 3 embodiment of the invention is compared with comparative example, its heating life-span is improved significantly.
Conclusion: the thermoelectric converter resistive material in work-ing life that prolonged according to the invention, have high hot strength, resistance to high temperature oxidation, heat and corrosion resistant performance during work, can satisfy life requirements during use to material, good result of use is arranged.
Claims (3)
1. one kind prolonged the thermoelectric converter resistive material in work-ing life, and it is characterized in that: described material is made up of Ni, Si, Mn, Ti, and the mass percentage content of each component is:
Si：0.5～3.0％；
Mn：0.02～1.0％；
Ti：0.02～0.5％；
Ni: surplus.
2. the thermoelectric converter resistive material in work-ing life that prolonged according to claim 1 is characterized in that the mass percentage content of described each component of material is:
Si：2.3～2.5％；
Mn：0.1～0.5％；
Ti：0.05～0.15％；
Ni: surplus.
3. the thermoelectric converter resistive material in work-ing life that prolonged according to claim 1 is characterized in that: the resistivity that described material is 20 ℃ is 0.19 μ Ω .m～0.25 μ Ω .m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110335755.3A CN102517474B (en) | 2011-10-29 | 2011-10-29 | Resistance material for prolonging service life of overheated element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110335755.3A CN102517474B (en) | 2011-10-29 | 2011-10-29 | Resistance material for prolonging service life of overheated element |
Publications (2)
| Publication Number | Publication Date |
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| CN102517474A true CN102517474A (en) | 2012-06-27 |
| CN102517474B CN102517474B (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110335755.3A Active CN102517474B (en) | 2011-10-29 | 2011-10-29 | Resistance material for prolonging service life of overheated element |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108342618A (en) * | 2018-05-25 | 2018-07-31 | 江苏湃特瑞电器有限公司 | A kind of electric resistance alloy silk |
| CN109837423A (en) * | 2017-11-28 | 2019-06-04 | 丹阳市延陵镇优越合金厂 | A kind of resistance material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4471034A (en) * | 1982-11-16 | 1984-09-11 | Eutectic Corporation | Alloy coating for cast iron parts, such as glass molds |
| JPH0270035A (en) * | 1988-09-05 | 1990-03-08 | Daido Steel Co Ltd | High permeability magnetic material |
-
2011
- 2011-10-29 CN CN201110335755.3A patent/CN102517474B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4471034A (en) * | 1982-11-16 | 1984-09-11 | Eutectic Corporation | Alloy coating for cast iron parts, such as glass molds |
| JPH0270035A (en) * | 1988-09-05 | 1990-03-08 | Daido Steel Co Ltd | High permeability magnetic material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109837423A (en) * | 2017-11-28 | 2019-06-04 | 丹阳市延陵镇优越合金厂 | A kind of resistance material |
| CN108342618A (en) * | 2018-05-25 | 2018-07-31 | 江苏湃特瑞电器有限公司 | A kind of electric resistance alloy silk |
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| Publication number | Publication date |
|---|---|
| CN102517474B (en) | 2014-09-10 |
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