CN102517474B - 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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- CN102517474B CN102517474B CN201110335755.3A CN201110335755A CN102517474B CN 102517474 B CN102517474 B CN 102517474B CN 201110335755 A CN201110335755 A CN 201110335755A CN 102517474 B CN102517474 B CN 102517474B
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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 extended.
Background technology
Nickel aluminium heating resistor Alloyapplication is in production overheating protection and precisely control the overheating protective element of current overload, effectively prevent (motor, transformer ... etc.) produce because electric current is excessive overheated.Because the 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 1200 DEG C of left and right, while requiring alloy material work, there is high hot strength, resistance to high temperature oxidation, heat and corrosion resistant performance, also possess the high reliability of good fatigue property, fracture toughness property, plasticity, structure stability, work etc. simultaneously.The nickel aluminium heating wire material generally using at present generally has two types, corresponding to different overheating protective element models, the first is Ni-Si-Mn-Al alloy, the resistivity of 20 DEG C is 0.31 μ Ω .m, although the resistivity of this type of material meets above-mentioned requirements, but in the time of 1250 DEG C, the life-span only has 30min, cannot meet the standard of least life 1.5h; Another kind is Ni-Si-Mn ternary alloy, and the resistivity of 20 DEG C is 0.23 μ Ω .m, and when 1200 DEG C of this material, there is 10h in the life-span, cannot meet the standard of the desired least life 15h of this overheating protective element.
Summary of the invention
The object of this invention is to provide a kind of thermoelectric converter resistive material in work-ing life that extended, described material is in the situation that ensureing resistivity, and high temperature service life is improved significantly.
The resistive material that extended 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 good technical scheme of the present invention is that the mass percentage content of the each component of described material is: Si:2.3～2.5%; Mn:0.1～0.5%; Ti:0.05～0.15%; Ni: surplus.
The resistivity that described material is 20 DEG C is 0.19 μ Ω .m～0.25 μ Ω .m.
Advantage of the present invention is:
In alloy, add after Ti element, can form obvious intracrystalline strengthening by alloy, put forward heavy alloyed intensity, at high temperature Ti element can stop grain fineness number to be grown up simultaneously, put forward heavy alloyed high-temperature stability, improve the object of high temperature service life thereby reach, simultaneously a small amount of Ti element add alloy resistivity effects very little, hot workability that simultaneously also can alloy causes deterioration.
Embodiment
The proportioning of the constituent mass per-cent of the resistive material that extended thermoelectric converter work-ing life of the present 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); through forge hot,---hot rolling---drawing---annealing, obtains nickel aluminium heating resistor alloy of the present invention.The concrete preparation method of described heating resistor material is as follows:
1) the above-mentioned alloy of mode melting of employing vacuum induction melting or the remelting of employing Medium frequency+electric slag smelting, adding of each element can adopt pure metal to add, and also can adopt master alloy form to add.
2) above-mentioned alloy is carried out to drawing after by forge hot, hot rolling, thermal treatment, then by 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
The finished product that the above embodiment of the present invention 1-3 material is made, the finished product that comparative example 1-2 material is made does the mechanicl test of metal, and test-results is 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 made, the finished product that comparative example 1-2 material is made does the mechanicl test of metal and can find out, its tensile strength of finished product that embodiment 1-3 material is made increases, and the finished product that unit elongation and comparative example 1-2 material are made is basic identical.
The finished product that the above embodiment of the present invention 1-2 material is made, the finished product that comparative example 1 material is made does 1250 DEG C of heating longevity tests of metal; The finished product that embodiment 3 materials are made, the finished product that comparative example 2 materials are made does 1200 DEG C of heating longevity tests of metal.The condition of its test is: B alloy wire energising 2min, power-off 2min, and iterative cycles, until the fracture of silk material, before fracture, the number of times * make-and-break time of silk material circulation is the life-span of heating wire, 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 |
As can be seen from Table 3, the embodiment of the present invention is compared with comparative example, and its heating life-span is improved significantly.
Conclusion: the thermoelectric converter resistive material in work-ing life that extended of the present invention, when work, there is high hot strength, resistance to high temperature oxidation, heat and corrosion resistant performance, when use, can meet the life requirements to material, there is good result of use.
Claims (2)
1. extended 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, 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 resistivity that described material is 20 DEG C is 0.19 μ Ω .m～0.25 μ Ω .m.
2. the thermoelectric converter resistive material in work-ing life that extended according to claim 1, is characterized in that, the mass percentage content of the described each component of material is:
Si：2.3～2.5%；
Mn: 0.1～0.5%；
Ti：0.05～0.15%；
Ni: surplus.
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 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110335755.3A CN102517474B (en) | 2011-10-29 | 2011-10-29 | Resistance material for prolonging service life of overheated element |
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| Publication Number | Publication Date |
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| CN102517474A CN102517474A (en) | 2012-06-27 |
| CN102517474B true CN102517474B (en) | 2014-09-10 |
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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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Families Citing this family (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 |
Citations (1)
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2722520B2 (en) * | 1988-09-05 | 1998-03-04 | 大同特殊鋼株式会社 | High permeability magnetic material |
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Patent Citations (1)
| 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 |
Non-Patent Citations (1)
| Title |
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| JP平2-70035A 1990.03.08 |
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| CN102517474A (en) | 2012-06-27 |
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