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Which kind of refractory material can I choose at 2400 degre

Which kind of refractory material can I choose at 2400 degrees?
Which kind of refractory material can I choose at 2400 degrees? According to the relevant information compiled by Xiaobian, the number of refractory materials currently applicable to 2400 high temperature is relatively small, and the price of products meeting this high temperature requirement is relatively expensive. Two types of refractory materials, zirconia and yttrium oxide, are introduced today. The product can meet the high temperature requirements of 2400 degrees.
Zirconium oxide high-temperature ceramic products can be made into bismuth of colored, rare metals and precious metals, as well as high-temperature furnace tubes and thermocouple protection tubes. It can also be used to make solid electrolytes for temperature and temperature measurement of high temperature liquids such as flue and molten steel, ceramic adiabatic engines and their parts, electrical insulating sheets for magnetic fluid power generation, jet and missile insulation and ablation materials, and rockets. Burning nozzle, front cone of the spacecraft, nose cone, etc.
Zirconia high-temperature ceramics can also be made into wire drawing dies, tools, springs, high temperature bearings, wear-resistant gaskets, corrosion-resistant pump parts, and grinding media balls. The zirconia special refractory material can also be used as a heating element for a high-temperature electric furnace, a thermistor, a gas sensor, and an amorphous refractory material such as a spray paint and a castable.
Special refractory tree materials cover a wide range of topics, including high melting point oxides, high melting point non-oxides and composite compounds derived therefrom, cermets, high temperature coatings, high temperature fibers and reinforcing materials. Among them, high melting point non-oxides are commonly referred to as refractory compounds, which in turn include carbides, nitrides, borides, silicides, and sulfides.
Although the cost of special refractory materials is high, it has many excellent properties and is an indispensable and irreplaceable product in many industrial sectors. Especially in many new technologies and new fields, replacing other products in many key parts can greatly improve the service life and significantly increase the economic benefits. The classification of special refractory materials is classified according to the different raw materials and product properties, which can be roughly divided into five aspects:
(1) a high melting point oxide material and a composite material thereof;
(2) refractory compound materials (carbides, nitrides, borides, silicides, etc.) and composite materials thereof;
(3) a composite material of a high melting point oxide and a refractory metal (cermet);
(4) high temperature amorphous materials and inorganic coatings;
(5) High temperature fibers and their reinforcing materials.
Among the refractory compounds, the high melting point is a carbide, followed by a nitride and an oxide. Among the oxides, the lowest melting point is an acidic oxide such as silica (SiO 2 :), titanium dioxide (TiO 2 ). Followed by neutral oxides, such as aluminum oxide (Al2O3), antimony trioxide (Cr2O3), the highest melting point is alkaline oxides, such as bismuth oxide (BeO), magnesium (MgO), calcium oxide ( CaO), cerium oxide (SiO).
Gases, carbides, nitrides and borides of certain elements in cycles 5, 6, and 7 of the Periodic Table of the Elements, such as oxides: zirconium dioxide (ZK): 7000X, cerium oxide (ThO2) 3050t, Cerium oxide (HfO1) 2812 ° C, magnesium oxide (MgO) 2800 ° C; carbide: niobium carbide (HfC) 4160 ° C, zirconium carbide (ZrC) 3500 ° C, vanadium carbide (VC) 2810 ° C. tungsten carbide (W2C) 2857 °C, carbon carbide (TiC) 3150 ° C; nitride: tantalum nitride (Hm) 3310 ° C, zirconium nitride (ZrN) 3000 ° C, titanium dinitride (TiM) 2930 ° C; boride: bismuth diboride ( HfB2) 3250 ° C, zirconium diboride (ZrB 2 ) 3190 ° C, tungsten hexaboride (WB6) 2920 ° C, these compounds are also high melting point compounds.
Which kind of refractory material can I choose at 2400 degrees?
1. Zirconium oxide special refractory material, zirconia is an acidic refractory material with a melting point of 2650 °C. Because of its high temperature chemical stability, the use temperature can be as high as 2400 ° C, can be used as high temperature furnace lining materials such as vacuum furnace, molybdenum wire furnace, gas furnace, medium and high frequency electric furnace, single crystal furnace. Used in the metallurgical industry as a separation ring for sizing nozzles and horizontal continuous casting for continuous casting. In the single crystal furnace, a heat shield and a lining can be made.
Zirconia hollow spheres and zirconia fiber products are the most advanced insulation and energy-saving furnace lining materials among the oxides. In the high temperature furnace, not only the thermal insulation material, but also can be directly used as the lining material.
2, cerium oxide special refractory material, although the melting point is very high at 3050 ° C, the use temperature can be as high as 2700 ° C, but there is radioactivity. It can be used to smelt metal uranium, thorium, thorium and radium, to make nuclear fuel for atomic reactors, and to produce heating elements for ultra-high temperature electric furnaces. The cerium oxide special refractory material, although having a high melting point, is easily reduced. The product can be used as a container for melting rare earth metals, a low-resistance semiconductor device, or as an abrasive material.
Many elements and compounds, although high in melting point, are used as raw materials for special refractory materials. They are also subject to certain restrictions. If some raw materials are decomposed when heated, some raw materials are highly toxic or radioactive, and some are original. The price of bismuth is very expensive, so it should be given full consideration when applied.
Regarding which kind of refractory material can be selected for 2400 degrees, Rongsheng refractory material is introduced here, I hope to help everyone, if you have other questions, please contact us.






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