Views: 0 Author: Site Editor Publish Time: 2026-04-29 Origin: Site
In fields such as high-temperature industrial kilns, high-end material sintering and single crystal growth, the inner lining material of the furnace directly determines the equipment's temperature resistance performance, energy-saving effect, service life and product purity. Traditional refractory materials have problems such as high density, poor heat insulation, easy slagging and short lifespan. Imported fiber boards have high costs and limited adaptability to working conditions. However, the new 1800℃ grade micro-porous foam ceramic furnace inner lining material, with its advantages of light weight, high strength, high temperature resistance, clean and environmentally friendly, and high efficiency and energy saving, has become the ideal choice for the inner lining of high-temperature furnaces.
The HT1800 microporous foam ceramic material is a lightweight, high-strength, high-temperature-resistant and heat-insulating material with numerous micro-nano-sized pores inside. Its maximum operating temperature can reach 1800℃, and the long-term stable working temperature is 1750℃. Its high-temperature resistance performance is superior to that of imported alumina fiber boards. The material's density is only 0.4 - 0.6 g/cm³. The compressive strength at room temperature is 6 MPa, and the compressive strength at high temperature is 3 MPa. The strength is significantly higher than that of traditional fiber boards. The surface hardness is high, and there is no slagging phenomenon after being fired in the air. It combines lightweight with structural stability.
This material has excellent resistance to acid and alkali erosion. Under the same working conditions, its service life is several times that of fiberboard. The micro-porous structure relies on static air insulation, with a low thermal conductivity, and its heat insulation effect is superior to that of hollow spherical bricks. The energy-saving effect is similar to that of lightweight fiberboard, and it saves energy by more than 50% compared to hollow spherical bricks. At the same time, the material is pure white and has a low impurity content. It does not contaminate the sintered products under high-temperature conditions and can be adapted to various working conditions such as air, nitrogen, argon, hydrogen-nitrogen mixed atmosphere and vacuum furnaces. It is convenient for processing, easy to grind, cut and drill holes, and installation is simple.
For the special scenarios of hydrogen furnaces and high-purity sintering, the HP1800 pure alumina foam ceramic new material provides a professional solution. This material has an alumina content of ≥ 99.5%, with the main crystal phase being corundum. Its maximum operating temperature is 1800℃, and its density is 0.8 - 1.0 g/cm³. The content of silicon oxide is extremely low. It will not be reduced to elemental silicon in pure hydrogen or hydrogen-nitrogen mixed atmospheres, thus eliminating problems such as powdering, slagging, and softening.
Compared with mullite-based refractory materials, HP1800 has a stronger ability to resist the erosion of volatile pollutants such as sodium oxide, chromium oxide, and lead oxide. It not only retains the advantages of light weight, energy saving, low heat storage, and rapid temperature rise and drop, but also ensures the high purity and stability of the sintered products, making it suitable for the demanding requirements of high-temperature sintering.
Two types of new micro-porous foam ceramic materials can be widely applied as the inner lining of the furnace chambers in equipment such as 1600~1800℃ temperature-changing furnaces, bell furnaces, conveyor furnaces, pit furnaces, box furnaces, tube furnaces, single crystal furnaces, vacuum atmosphere furnaces, and microwave heating furnaces. They can also be used as the insulation layer of pusher kilns, covering various fields such as advanced ceramics, high-end refractory materials, semiconductor materials, sapphire single crystal annealing, and nitride ceramic sintering.
With core advantages such as high temperature resistance, good strength, cleanliness and environmental friendliness, energy-saving performance, and long service life, the new 1800℃ grade micro-porous foam ceramic furnace material effectively replaces imported fiber boards and heavy refractory bricks, providing stable and reliable support for the upgrade of high-temperature industrial equipment and the manufacturing of high-end materials.
Question 1 : What is the maximum service temperature of this new material?
Answer: The maximum service temperature reaches 1800℃, with a long-term working temperature of 1750℃.
Question 2: What are its density and strength?
Answer: Density is only 0.4–0.6 g/cm³, with cold crushing strength of 6MPa and high-temperature strength of 3MPa—lightweight yet strong.
Question 3: What advantages does it have over traditional fiber boards?
Answer: Higher strength, better surface hardness, no spalling after firing, excellent acid/alkali corrosion resistance, and a service life several times longer than fiber boards.
Question 4: How energy-efficient is it?
Answer: It has low thermal conductivity and excellent insulation, saving over 50% energy compared to hollow sphere bricks, with energy efficiency close to lightweight fiber boards.
Question 5: Which material is recommended for hydrogen furnaces or high purity sintering?
Answer: HP1800 pure alumina foam ceramic, with ≥99.5% alumina content, is recommended. It does not reduce or powder in hydrogen or hydrogen nitrogen atmospheres.
Question 6: Does this material contaminate sintered products?
Answer: No. It is clean and white with low impurities, causing no contamination at high temperatures—ideal for high purity sintering.
Question 7: What equipment and fields can it be used in?
Answer: It can be used in lift furnaces, bell furnaces, trolley furnaces, tube furnaces, crystal pullers, vacuum/atmosphere furnaces, etc., covering semiconductors, sapphire annealing, nitride ceramic sintering, and more.
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