CN102965600A - Alloy used for high-temperature stream heating device and preparation method thereof - Google Patents
Alloy used for high-temperature stream heating device and preparation method thereof Download PDFInfo
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- CN102965600A CN102965600A CN2012104449805A CN201210444980A CN102965600A CN 102965600 A CN102965600 A CN 102965600A CN 2012104449805 A CN2012104449805 A CN 2012104449805A CN 201210444980 A CN201210444980 A CN 201210444980A CN 102965600 A CN102965600 A CN 102965600A
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Abstract
The invention belongs to the field of material processing, and specifically relates to an alloy used for a high-temperature stream heating device and a preparation method thereof. The alloy is prepared from, based on the mass percent, 38-50% of tungsten, 10-20% of molybdenum, 5-8% of carbon fibre and 15-32% of ceramic fiber as main elements. The preparation method of the alloy comprises the following steps: adopting the tungsten, the molybdenum, the carbon fibre and the ceramic fiber as main raw materials, uniformly mixing, placing the main raw materials in an electric furnace to smelt, purify, refine, shape and process the alloy, and then manufacturing through casting, rolling and tube drawing, wherein carbon, phosphorus, sulfur as well as a microelement and a strong oxidizer are added in a smelting process to improve the property. The alloy is mainly used for an electric heating pipe heating piece of the high temperature stream heating device. As the alloy manufactured in the invention has high resistivity, strong oxidation resistance, high-temperature resistance, and can tolerate the temperature of 1800-2100 DEG C at the utmost, thereby widening the application of the high-temperature steam heating device using the alloy, and having a wider prospect in application.
Description
Technical field
The invention belongs to material processing field, particularly a kind of high-temperature steam electro-heat equipment Alloy And Preparation Method.
Background technology
Nowadays, use in the technological process of production of steam at numerous areas such as chemical industry, light industry, medicine, food-processing, thermal power generation and metallurgy, high-temperature steam provides the splendid energy as the generation of mechanical energy, therefore, can the high-temperature steam electro-heat equipment stablize the directly whole production efficiency of impact of normal operation.And according to the difference of temperature in the production environment or the temperature that can heat, require also different to the tolerable temperature of high-temperature steam electro-heat equipment.Instantly, more and more higher according to the use temperature requirement that the high-temperature steam electro-heat equipment can heat, but under the condition of high temperature, the oxide film on the alloying element surface of high-temperature steam heating device can be accelerated aging and destroy, thereby reduction of service life, directly affect production schedule.
In the correlation technique of existing high-temperature steam electro-heat equipment, usually utilize the resistance characteristic of material to make heating element, wherein, resistance alloy mainly contains two large classes: a class is the Aludirome of ferritic structure; Another kind of is the nichrome of austenite structure.The maximum operation (service) temperature of ferrum-chromium-aluminum electrical heating alloys is 1400 ℃, and the maximum operation (service) temperature of nickel chromium triangle electrical heating alloys is 1200 ℃, therefore, the use temperature of high-temperature steam electro-heat equipment still is subject to 1400 ℃ of top temperatures, directly affect the use range of high-temperature steam electro-heat equipment, the correlation technique that is further improved is expanded its use range.
Summary of the invention
The present invention is intended to, remedy the deficiencies in the prior art, a kind of resistivity is high by providing, stronger, the resistant to elevated temperatures high-temperature steam electro-heat equipment of oxidation-resistance Alloy And Preparation Method, improve to use the maximum operation (service) temperature of the high-temperature steam electro-heat equipment of this alloy, with satisfy to Heating temperature have requirements at the higher level the high-temperature steam electro-heat equipment demand and expand its use range.
A kind of high-temperature steam electro-heat equipment of the present invention is achieved through the following technical solutions with Alloy And Preparation Method:
A kind of high-temperature steam electro-heat equipment alloy, the mass percent of principal element is as follows in the described alloy: tungsten 38-50%, molybdenum 10-20%, carbon fiber 5-8% and ceramic fiber 15-32%.
High-temperature steam electro-heat equipment alloy of the present invention, the highest tolerable temperature reaches 1800-2100 ℃, is mainly used in the electrothermal tube heat generating member of high-temperature steam electro-heat equipment.
A kind of high-temperature steam electro-heat equipment provided by the invention preparation method of alloy, it is characterized in that, mainly may further comprise the steps: adopt tungsten, molybdenum, carbon fiber and ceramic fine raw material, press following weight part: tungsten 38-50, molybdenum 10-20, carbon fiber 5-8, ceramic fiber 15-32, weighing also mixes, put platform refining, purification, refining, moulding and the processing of carrying out alloy in the electric furnace, then make through mold, rolling, tube drawing.
Further, according to the different requirements of alloy purity, smelt by selecting any device wherein such as electric arc furnace, vacuum induction furnace and esr.
Further, also comprise, in smelting process, add carbon, phosphorus, sulphur and trace element, to improve alloy property.
Further, add strong deoxidation in smelting process, secondary oxidation when preventing ingot casting reduces segregation and thick column crystallization tissue appearance.
The beneficial effect of realizing of the present invention is: gained resistance alloys rate is high, oxidation-resistance is strong, high temperature resistant, and temperature can be up to 1800-2100 ℃.Its heat-generating pipe standardized component wall thickness 0.2-0.1mm, pipe diameter 15-10mm, length 2.0-2.5mm, resistance reach 100,000 ohm.Further expanded the use range of high-temperature steam electro-heat equipment.
Embodiment
Below in conjunction with 3 preferred embodiments technical solutions according to the invention are done further explanation:
Embodiment 1
Originally be the high-temperature steam electro-heat equipment alloy among the embodiment, the mass percent of principal element is as follows in this alloy:
Tungsten 50%, molybdenum 10%, carbon fiber 5%, ceramic fiber 15%,
The above-mentioned high-temperature steam electro-heat equipment preparation method of alloy, may further comprise the steps: adopting tungsten, molybdenum, carbon fiber and ceramic fiber is main raw material, press following mass parts: tungsten 50kg, molybdenum 10kg, carbon fiber 5kg, ceramic fiber 15kg, weighing also mixes, place electric furnace, carry out smelting, purification, refining, moulding and the processing of alloy, then make described alloy through mold, rolling, tube drawing.
Further, according to the different requirements of alloy purity, smelt by selecting any means wherein such as electric arc furnace, vacuum induction furnace and esr.
Further, also comprise, in smelting process, further add carbon, phosphorus, sulphur and trace element, to improve alloy property.
Further, add strong reductor in smelting process, secondary oxidation when preventing ingot casting reduces segregation and thick column crystallization tissue appearance.
High through the made resistance alloys rate of aforesaid method, oxidation-resistance is strong, high temperature resistant, temperature can be up to 1800-2100 ℃.Make wall thickness 0.2-0.1mm with this alloy, pipe diameter 15-10mm, length 2.0-2.5mm, resistance reach 100,000 ohm electrothermal tube heat generating member, and its good performance enough satisfies to be used for a long time to the higher high-temperature steam electro-heat equipment of working temperature requirement.
Embodiment 2
High-temperature steam electro-heat equipment alloy in the present embodiment, the mass percent of principal element is as follows in this alloy:
Tungsten 38%, molybdenum 20%, carbon fiber 8%, ceramic fiber 32%
The above-mentioned high-temperature steam electro-heat equipment preparation method of alloy, adopting tungsten, molybdenum, carbon fiber and ceramic fiber is main raw material, press following mass parts: tungsten 38kg, molybdenum 20kg, carbon fiber 8kg, ceramic fiber 32kg, weighing also mixes, place electric furnace, carry out platform refining, purification, refining, moulding and the processing of alloy, then make described alloy through mold, rolling, tube drawing.
Other preparation methods are substantially the same manner as Example 1, add trace element and strong reductor in smelting process.Made resistance alloys rate is high, oxidation-resistance is strong, high temperature resistant, and temperature can be up to 1800-2100 ℃.Can be made into wall thickness 0.2-0.1mm with this alloy, pipe diameter 15-10mm, length 2.0-2.5mm, resistance reach 100,000 ohm electrothermal tube heat generating member.Its good performance enough satisfies to be used for a long time to the higher high-temperature steam electro-heat equipment of working temperature requirement.
Embodiment 3
High-temperature steam electro-heat equipment alloy in the present embodiment, the mass percent of principal element is as follows in this alloy:
Tungsten 42%, molybdenum 15%, carbon fiber 8%, ceramic fiber 32%
The above-mentioned high-temperature steam electro-heat equipment preparation method of alloy, adopting tungsten, molybdenum, carbon fiber and ceramic fiber is main raw material, press following mass parts: tungsten 42kg, molybdenum 15kg, carbon fiber 8kg, ceramic fiber 32kg, weighing also mixes, place electric furnace, carry out smelting, purification, refining, moulding and the processing of alloy, then make described alloy through mold, rolling, tube drawing.
Other preparation methods are substantially the same manner as Example 1, add trace element and strong reductor in smelting process.Made resistance alloys rate is high, oxidation-resistance is strong, high temperature resistant, and temperature can be up to 1800-2100 ℃.Can be made into wall thickness 0.2-0.1mm with this alloy, pipe diameter 15-10mm, length 2.0-2.5mm, resistance reach 100,000 ohm electrothermal tube heat generating member.Its good performance enough satisfies to be used for a long time to the higher high-temperature steam electro-heat equipment of working temperature requirement.
The present invention is not limited only to above-described embodiment, and in addition to the implementation, the present invention can also have other embodiment, all employings design disclosed in this invention, is equal to and replaces or the technical scheme of equivalent transformation, all drops on the protection domain of requirement of the present invention.
Claims (6)
1. high-temperature steam electro-heat equipment alloy is characterized in that: adopting tungsten, molybdenum, carbon fiber and ceramic fiber is main raw material, and the weight percent of described principal element is as follows:
Tungsten 38-50%, molybdenum 10-20%, carbon fiber 5-8% and ceramic fiber 15-32%.
2. high-temperature steam electro-heat equipment alloy according to claim 1, it is characterized in that: the highest tolerable temperature of described alloy is 1800-2100 ℃.
3. a kind of high-temperature steam electro-heat equipment according to claim 1 is with the preparation method of alloy, it is characterized in that, may further comprise the steps: adopting tungsten, molybdenum, carbon fiber and ceramic fiber is main raw material, press following weight part: tungsten 38-50, molybdenum 10-20, carbon fiber 5-8, ceramic fiber 15-32, weighing also mixes, put smelting, purification, refining, moulding and the processing of carrying out alloy in the electric furnace, then make through mold, rolling, tube drawing.
4. a kind of high-temperature steam electro-heat equipment according to claim 3 is characterized in that with the preparation method of alloy, according to the different requirements of alloy purity, smelts by selecting electric arc furnace, vacuum induction furnace and esr any device wherein.
5. a kind of high-temperature steam electro-heat equipment according to claim 3 is characterized in that with the preparation method of alloy, also comprises, further adds carbon, phosphorus, sulphur and trace element, to improve alloy property.
6. a kind of high-temperature steam electro-heat equipment according to claim 3 is characterized in that with the preparation method of alloy, also comprises, adds strong reductor, and secondary oxidation when preventing ingot casting reduces segregation and thick column crystallization tissue appearance.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107099760A (en) * | 2017-04-12 | 2017-08-29 | 芜湖扬展新材料科技服务有限公司 | A kind of high temperature resistant tungsten-molybdenum alloy |
| CN113528987A (en) * | 2021-06-18 | 2021-10-22 | 河钢承德钒钛新材料有限公司 | Tungsten alloy composite material and 3D printing method thereof |
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| DE2224119A1 (en) * | 1972-05-17 | 1973-12-06 | Siemens Ag | PROCESS FOR MANUFACTURING A FIBER COMPOSITE MATERIAL |
| CN101210305A (en) * | 2006-12-31 | 2008-07-02 | 王为 | Tungsten alloy composite plating coat material and manufacturing method thereof |
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- 2012-11-09 CN CN2012104449805A patent/CN102965600A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2224119A1 (en) * | 1972-05-17 | 1973-12-06 | Siemens Ag | PROCESS FOR MANUFACTURING A FIBER COMPOSITE MATERIAL |
| CN101210305A (en) * | 2006-12-31 | 2008-07-02 | 王为 | Tungsten alloy composite plating coat material and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107099760A (en) * | 2017-04-12 | 2017-08-29 | 芜湖扬展新材料科技服务有限公司 | A kind of high temperature resistant tungsten-molybdenum alloy |
| CN107099760B (en) * | 2017-04-12 | 2019-04-12 | 芜湖扬展新材料科技服务有限公司 | A kind of high temperature resistant tungsten-molybdenum alloy |
| CN113528987A (en) * | 2021-06-18 | 2021-10-22 | 河钢承德钒钛新材料有限公司 | Tungsten alloy composite material and 3D printing method thereof |
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Application publication date: 20130313 |