CN102888537A - Alloy material with high temperature coefficient of resistance and preparation method thereof - Google Patents
Alloy material with high temperature coefficient of resistance and preparation method thereof Download PDFInfo
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- CN102888537A CN102888537A CN2012103702952A CN201210370295A CN102888537A CN 102888537 A CN102888537 A CN 102888537A CN 2012103702952 A CN2012103702952 A CN 2012103702952A CN 201210370295 A CN201210370295 A CN 201210370295A CN 102888537 A CN102888537 A CN 102888537A
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Abstract
The invention provides an alloy material with high temperature coefficient of resistance. The alloy material is prepared by adding six metal components as the additives to nickel-ferrum alloy, and smelting same to obtain the product, wherein the six metal components are respectively germanium, zirconium, cerium, titanium, aluminum and ferrum; and the alloy material comprises the following components in percentage by weight: 50-65% of component Ni, 14-21% of component Cr, 0.1-0.9% of component Ge, 0.15-0.5% of component Ce, 0.2-1% of component Zr, 1.1-3.5% of component Ti, 0.5-2% of component Al, and the balance of component Fe. The invention also provides a preparation method of the alloy material. The alloy material prepared by the preparation method provided by the invention is of 8.2g/cm<3> based on the density, and has the resistivity of 1.53 (microhm.megabyte.20 DEG C); and the alloy material has temperature coefficient of resistance of 240aR/*10<-6>DEG/C under 100-800 DEG C; and the temperature is in good linear relation to the resistivity.
Description
Technical field
The present invention relates to a kind of heating resistor wire material, be specially needed heating material in a kind of various thermal tool that are applicable to need automatic control heating temp and the equipment; Be particularly useful for the control of temperature is had relatively high expectations and is not suitable for the equipment of reload temperature sensor and a kind of high resistivity on the instrument, the alloy material of high-temperature coefficient; The present invention also provides the preparation method of above-mentioned materials simultaneously.
Technical background
In the hardware ﹠ tools field, especially in electric iron, very high to the requirement of nichrome wire, require not only that the nichrome wire volume is little, light, rate of heating is fast, but also need and can accurately show and control the temperature of welding head.Common electric iron only with the resistance wire heating, is controlled temperature by technician's experience; The ceramic heating core of the outer heating system that generally adopts now and the thermometric of temperature sensor are controlled the temperature of welding head, and all there are some drawbacks in above two kinds of electric iron.Its drawback of the most traditional electric iron is apparent, and its drawback is mainly concentrated in the following areas for the modern controlled welding stage that adopts ceramic heater: 1, because the cause of external heating mode, its temperature conduction is distant, it is longer that the welding head intensification reaches the working temperature required time, and the length of temperature apart from conductive process in the loss of heat energy larger, its inefficiency, energy consumption are high.2, owing to having adopted temperature sensor, and sensor near ceramic heater like this can because the reasons such as the temperature of environment, wind speed cause its detection temperature and actual temperature gap larger, although these can come adjustment by the detection of welding head temperature, but environmental evolution is what be difficult to hold in the work engineering, and such result will cause welding the scaling loss of the unstable and electronic devices and components of weight.3, because temperature sensor from heating element close to, long-time under the environment of high temperature aerobic the as easy as rolling off a log ageing failure of temperature sensor.Up to the present also not having a kind of effective means to solve the electric iron heating begins just can reach working temperature, little, the lightweight handled easily of volume in 1 ~ 2 second from energising soon; The temperature precise control; The internal heat generation material of long service life.
Summary of the invention
The invention provides a kind of alloy material of high resistance high temperature coefficient of resistance, this material can be used as nichrome wire, has solved the deficiency in the background technology, and the resistivity of this alloy material is up to 1.53(μ Ω .m, 20 ℃), its temperature coefficient of resistance is 240a in 100 ℃-800 ℃ temperature range
R/ * 10
-6℃
-1
Realize that the technical scheme that above-mentioned purpose of the present invention adopts is:
A kind of alloy material of high resistance high temperature coefficient of resistance is joined in the Rhometal as additive and is formed through smelting by germanium-zirconium-cerium-titanium-six kinds of metal components of aluminium-iron, and the density of described alloy material is 8.2g/cm
3, its resistivity is .m.20 ℃ of 1.53(μ Ω), its temperature coefficient of resistance is 240 a in 100-800 ℃ temperature range
R/ * 10
-6℃
-1, the mass percent of each component of described alloy material and each component is respectively: Ni component: 50%-65%, Cr component: 14%-21%, Ge component: 0.1%-0.9%, Ce component: 0.15%-0.5% Zr component: 0.2%-1%, Ti component: 1.1%-3.5%, Al component: 0.5%-2%, Fe component surplus.
Described Ni component, Cr component, Ge component, Ce component, Zr component, Ti component and Al component are metal oxide, and the Fe component is metal simple-substance.
The present invention also provides the preparation method of the alloy material of above-mentioned high resistance high temperature coefficient of resistance, may further comprise the steps: (1), proportionally take by weighing each component, at first nichrome is heated to fusing and makes molten steel with for subsequent use in vacuum oven, Heating temperature is 1600 ℃; (2), Ge, Ce, Zr, Ti, Al and six kinds of components of Fe mixed and ground 2 hours, make additive; (3) molten steel is poured in the smelting furnace of another belt stirrer, between tapping 1/5-4/5, added additive, and under 1600 ℃ temperature, fully stir; (4), at last pouring molten steel is become base and through strong cold but, be rolled into section bar.
Stirring tool is magnetic stirrer in the step (3), and churning time is 1 hour.
Technical scheme of the present invention has following advantage: the parent of this alloy material is nichrome, the resistance of oxidation the when resistivity that a large amount of Ni and Cr have guaranteed material in the alloy and high temperature.Adding of Ge, join so that the temperature coefficient of resistance of material is larger in the additive, and major cause is that extranuclear electron its vibration amplitude when temperature variation of Ge element changes greatly, and the difficult nucleus that breaks away from attracts it.Be added with Ce in the alloy material provided by the present invention, can greatly improve the dispersive ability of various elements in material of interpolation, be unlikely to chemical composition in the material and layering occur or gather.Owing to also being added with the metal oxide TiO of Ti and Al in the alloy material of the present invention
2And Al
2O
3Cause to occur in the material crystallisation process localised crystal because in the molten steel of melting, disperse inhomogeneous in order to prevent them excessive and then occur the problem of fracture when causing the cold-drawn filament, also have the Zr component in the additive, the introducing meeting of Zr is so that the crystallization grain refining, thereby avoids the cold-drawn fracture of wire.The adding of Ti, Al mainly is in order to improve the resistivity of material.The Fe powder joins GeO
2, CeO
2, ZrO
2, TiO
2And Al
2O
3Above oxide compound can be combined with iron powder be unlikely to form floating matter or precipitation so that the molten steel density of its density and melting is approaching and lose its effect Deng the main purpose of grinding together in the metal oxide.
In production technique, with molten steel again the reason to the another one smelting furnace be for the oxide compound that prevents from adding swims in molten steel surface and loses its effect, add additive so be chosen between the tapping 1/5-4/5.
Simultaneously the present invention adopts induction stirring and does not adopt the alr mode of blowing argon gas, also is to consider TiO
2, Al
2O
3These two kinds of materials gently easily swim in the reason of molten steel surface.
Description of drawings
Fig. 1 is the temperature-resistance rate graph of a relation of prepared alloy material in the embodiment of the invention 1.
Embodiment
Below in conjunction with specific embodiment the present invention is done detailed specific description.
Embodiment 1
At first take by weighing 100 kilograms of nickel-cadmiums, GeO in the present embodiment
21 kilogram, CeO
20.5 kilogram, ZrO
21 kilogram, TiO
24 kilograms, Al
2O
32.2 kilogram and 10 kilograms of Fe powder,, nichrome is heated to fusing makes molten steel with for subsequent use in vacuum oven, Heating temperature is 1600 ℃.Then will remain six kinds of components mixing and fully grind 2 hours to the Powdered additive that makes; With molten steel tapping and pour in the smelting furnace, in the time of between tapping 1/5-4/5 pulverous additive is added in the smelting furnace, and under 1600 ℃ temperature, stirred 1 hour with magnetic stirrer.At last pouring molten steel is the base of diameter 120mm and through cooling, be rolled into the section bar of diameter 20mm, finally by the filament that makes diameter 0.5mm after the cold-drawn repeatedly.
In the prepared alloy material of the present embodiment, the shared mass percent of each component is respectively: the Ni component: 65%, Cr component: 19.3%, Ge component: 0.84%, Ce component: 0.42% Zr component: 0.84%, Ti component: 3.36%, Al component: 1.85%, the Fe component 8.42%.
Also carry out simultaneously in the present embodiment simultaneous test, do not added ZrO in the simultaneous test 1
2, in addition all parameters are all identical, occur fracture of wire in the cold-drawn drawing process when cold-drawn is following to 1mm.
Do not add TiO in the simultaneous test 2
2And Al
2O
3, in addition all parameters are all identical.
Do not add CeO in the simultaneous test 3
2, in addition all parameters are all identical, occur fracture of wire in the cold-drawn drawing process when cold-drawn is following to 0.5mm.
Do not adopt induction stirring in the simultaneous test 4, blow 0.2Mpa argon gas stirring 5 minutes but adopt.
The material property that makes in this enforcement and simultaneous test and common nichrome are compared, and its result is as shown in the table:
Temperature coefficient of resistance unit in the table: a
R/ * 10
-6℃
-1Resistivity unit: μ Ω .m
As can be seen from the above table, although the temperature coefficient of resistance of the material that makes in the simultaneous test 1 and resistivity all with embodiment 1 in as broad as long owing to not adding ZrO
2, so its tensile property has been subject to impact, occurs fracture of wire in the cold-drawn drawing process when cold-drawn is following to 1mm.Simultaneous test 2,3 and 4 prepared material properties all have reduction in various degree.
The temperature-resistance rate graph of a relation of the alloy material that makes in the present embodiment has good linear relationship by the temperature that can find out material provided by the present invention among Fig. 1 and resistivity as shown in Figure 1.
Embodiment 2
At first take by weighing 80 kilograms of nickel-cadmiums, GeO in the present embodiment
20.6 kilogram, CeO
20.4 kilogram, ZrO
20.9 kilogram, TiO
23.2 kilogram, Al
2O
31.6 kilogram and 13.3 kilograms of Fe powder are heated to fusing with nichrome and make molten steel with for subsequent use in vacuum oven, Heating temperature is 1600 ℃.Then will remain six kinds of components mixing and fully be ground to the Powdered additive that makes; With molten steel tapping and pour in the smelting furnace, in the time of between tapping 1/5-4/5 pulverous additive is added in the smelting furnace, and under 1600 ℃ temperature, stirred 1 hour with magnetic stirrer.At last pouring molten steel is become the base of diameter 120mm and through cooling, be rolled into the section bar of diameter 20mm, finally by the filament that makes diameter 0.5mm after the cold-drawn repeatedly.
In the prepared alloy material of the present embodiment, the shared mass percent of each component is respectively: the Ni component: 63%, Cr component: 17%, Ge component: 0.6%, Ce component: 0.4% Zr component: 0.9%, Ti component: 3.2%, Al component: 1.6%, the Fe component 13.3%.
The prepared alloy material of the present embodiment after testing, its resistivity is up to 1.53(μ Ω .m, 20 ℃), its temperature coefficient of resistance is 240 a in 100 ℃-800 ℃ temperature range
R/ * 10
-6℃
-1
Embodiment 3
At first take by weighing 75.9 kilograms of nickel-cadmiums, GeO in the present embodiment
20.3 kilogram, CeO
20.5 kilogram, ZrO
20.3 kilogram, TiO
23.5 kilogram, Al
2O
32 kilograms and 17.5 kilograms of Fe powder are heated to fusing with nichrome and make molten steel with for subsequent use in vacuum oven, Heating temperature is 1600 ℃.Then will remain six kinds of components mixing and fully be ground to the Powdered additive that makes; With molten steel tapping and pour in the smelting furnace, in the time of between tapping 1/5-4/5 pulverous additive is added in the smelting furnace, and under 1600 ℃ temperature, stirred 1 hour with magnetic stirrer.At last pouring molten steel is become the base of diameter 120mm and through cooling, be rolled into the section bar of diameter 20mm, finally by the filament that makes diameter 0.5mm after the cold-drawn repeatedly.
In the prepared alloy material of the present embodiment, the shared mass percent of each component is respectively: the Ni component: 54%, Cr component: 21.9%, Ge component: 0.3%, Ce component: 0.5% Zr component: 0.3%, Ti component: 3.5%, Al component: 2%, the Fe component 17.5%.
The prepared alloy material of the present embodiment after testing, its resistivity is up to 1.53(μ Ω .m, 20 ℃), its temperature coefficient of resistance is 240 a in 100 ℃-800 ℃ temperature range
R/ * 10
-6℃
-1
Claims (4)
1. the alloy material of a high resistance high temperature coefficient of resistance is characterized in that being joined in the Rhometal as additive and being formed through smelting by germanium-zirconium-cerium-titanium-six kinds of metal components of aluminium-iron, and the density of described alloy material is 8.2g/cm
3, its resistivity is .m.20 ℃ of 1.53(μ Ω), its temperature coefficient of resistance is 240 a in 100-800 ℃ temperature range
R/ * 10
-6℃
-1, the mass percent of each component of described alloy material and each component is respectively: Ni component: 50%-65%, Cr component: 14%-21%, Ge component: 0.1%-0.9%, Ce component: 0.15%-0.5% Zr component: 0.2%-1%, Ti component: 1.1%-3.5%, Al component: 0.5%-2%, Fe component surplus.
2. the alloy material of high resistance high temperature coefficient of resistance according to claim 1, it is characterized in that: described Ni component, Cr component, Ge component, Ce component, Zr component, Ti component and Al component are metal oxide, and the Fe component is metal simple-substance.
3. the preparation method of the alloy material of high resistance high temperature coefficient of resistance claimed in claim 1, it is characterized in that may further comprise the steps: (1), proportionally take by weighing each component, at first nichrome is heated to fusing and makes molten steel with for subsequent use in vacuum oven, Heating temperature is 1600 ℃; (2), Ge, Ce, Zr, Ti, Al and six kinds of components of Fe mixed and ground 2 hours, make additive; (3) molten steel is poured in the smelting furnace of another belt stirrer, between tapping 1/5-4/5, added additive, and under 1600 ℃ temperature, fully stir; (4), at last pouring molten steel is become base and through strong cold but, be rolled into section bar.
4. the preparation method of the alloy material of high resistance high temperature coefficient of resistance according to claim 3 is characterized in that: stirring tool is magnetic stirrer in the step (3), and churning time is 1 hour.
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| CN201210370295.2A CN102888537B (en) | 2012-09-28 | 2012-09-28 | Alloy material with high temperature coefficient of resistance and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018031A (en) * | 2014-06-21 | 2014-09-03 | 辽宁工程技术大学 | Alloy material for mechanical device |
| CN104073734A (en) * | 2014-06-25 | 2014-10-01 | 盐城市鑫洋电热材料有限公司 | Nickel-chromium-iron compound material and preparation method thereof |
| WO2015196357A1 (en) * | 2014-06-24 | 2015-12-30 | 深圳麦克韦尔股份有限公司 | Electronic cigarette and heating wire thereof |
| CN105316536A (en) * | 2015-08-17 | 2016-02-10 | 张伟鑫 | Heating coil |
| CN105506434A (en) * | 2015-12-02 | 2016-04-20 | 苏州莱测检测科技有限公司 | Heating electric resistance alloy used for milling machine |
| CN115652169A (en) * | 2022-11-10 | 2023-01-31 | 张家港快工品科技有限公司 | Preparation method of electric resistance band for heat treatment equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018031A (en) * | 2014-06-21 | 2014-09-03 | 辽宁工程技术大学 | Alloy material for mechanical device |
| WO2015196357A1 (en) * | 2014-06-24 | 2015-12-30 | 深圳麦克韦尔股份有限公司 | Electronic cigarette and heating wire thereof |
| CN104073734A (en) * | 2014-06-25 | 2014-10-01 | 盐城市鑫洋电热材料有限公司 | Nickel-chromium-iron compound material and preparation method thereof |
| CN105316536A (en) * | 2015-08-17 | 2016-02-10 | 张伟鑫 | Heating coil |
| CN105506434A (en) * | 2015-12-02 | 2016-04-20 | 苏州莱测检测科技有限公司 | Heating electric resistance alloy used for milling machine |
| CN115652169A (en) * | 2022-11-10 | 2023-01-31 | 张家港快工品科技有限公司 | Preparation method of electric resistance band for heat treatment equipment |
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| CN102888537B (en) | 2014-05-28 |
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