Refractory Plates Sic Kiln Furniture for Oven

Product Description

Sic silicon carbide ceramic plate

1.Silicon nitride combined with silicon carbide products is a structural ceramic material. High-purity SIC and Si

powder are used as raw materials, and the body is formed by grouting and pressing, and is sintered by nitriding reaction. Silicon nitride and silicon carbide products include thin wall slabs, round tubes, burners and a variety of complex heterosexual products, as well as beams of various cross sections.

NSiC has higher flexural strength and excellent oxidation resistance than RSiC products. The maximum operating temperature is1500. In addition to its own structural characteristics, NSiC products also have good wear resistance and corrosion resistance to metal solutions, so NSiC products can directly contact aluminum, zinc, copper, and magnesium solutions, and NSiC protection tube was successfully used for temperature measurement.

NSiC has characteristics that other refractory materials do not have, such as high temperature resistance to bending, excellent high load loading and wear resistance.

 

Item	Unit	Data
Bulk density	g/cm3	2.75-2.82
Porosity	%	10-12
Compressive strength	MPa	600-700
Flexural strength	MPa	160-180
Young's modulus	Gpa	220-260
Thermal Conductivity	W/MK	15
Thermal expansion coefficient: 20-1000 ºC	10-6K-1	5.0
Maximum use temperature	C	1500
SiC	%	60-80
Silicon nitride	%	20-40

Applications:

Silicon nitride and silicon carbide beams have excellent high-temperature flexural strength, creep resistance

and oxidation resistance; mainly used in sanitary ceramics, high-voltage electrical porcelain, filters, quartz

crucibles; shed plates and fish-shaped plates which are widely used in daily-use ceramic Industry; protection

tube is used for temperature measurement in various industries; special-shaped products and burner sleeves

are widely used in various kiln and mechanical engineering.

 

2.

Recrystallized silicon carbide products are high-tech silicon carbide materials formed by mixing high-purity silicon carbide coarse powder and high-activity silicon carbide fine powder, and after grouting, vacuum sintering at 2450 ° C to recrystallize.

Recrystallized silicon carbide products have excellent properties such as high temperature strength, light weight, good thermal conductivity, small heat storage, and long life. They are widely used in ceramics, petrochemical, aerospace and other industrial sectors. Used for making ceramic pottery (rollers, beams, slabs, high-temperature burners, thermocouple protection tubes, etc.).

Among them, the most typical use is as high-temperature kiln furniture for various industrial kiln, especially suitable for use under high temperature conditions above 1250C. Using RSIC kiln furniture can significantly improve the filling efficiency and save energy consumption.

Beam products: recrystallized silicon carbide beams are widely used in sanitary ware, roller manufacturing, and electric porcelain industries. The size of the beam can be processed and manufactured according to requirements.

Square shed board, round plate and fish-shaped board: widely used in daily-use ceramics, sanitary ceramic sanitary ware, powder metallurgy, electronics and other industries. In addition, we can apply single-sided or double-sided coating to shed boards according to customers' needs. We can also produce porous, and one-sided or multi-sided special-shaped shed board.

Rollers and tubes: Roller kiln with high temperature and high load capacity, used in the production of alumina ceramics and technical ceramic products under high temperature and high oxidation environment. Recrystallized thermocouple protection tube meets the constant demand in the field of high temperature measurement due to its superior corrosion resistance and high temperature thermal conductivity. In addition, cold air tubes and some special-shaped tubes are also used in various industrial furnaces.

In addition to standard products, recrystallized silicon carbide materials can also be used to make a variety of different shaped products, such as burners and casseroles, as well as various industrial engineering parts made to order. It has excellent resistance to high temperature oxidation and corrosion and abrasion. Heat exchangers and high temperature parts made with it are also widely used in mechanical engineering.

Characteristics:
Good thermal conductivity
Excellent thermal shock resistance
Good oxidation resistance
Excellent acid resistance
Good heat resistance
Good high temperature strength
 

Material data:

Item	Unit	Data
Bulk density	g/cm3	2.60-2.74
Porosity	%	15
Compression strength	MPa	≥600
Flexural strength	MPa	90-100
Young modulus	Gpa	240
Thermal conductivity	W/MK	24
Coefficient of thermal expansion 20-1000C	10-6K-1	4.8
Max using temperature	C	1650
SiC	%	98.5

3.Sintering process of silicon carbide ceramics mainly includes: pressureless sintering, reaction sintering, hot-pressing sintering and hot isostatic pressing. Among them, reaction sintering and pressureless sintering are more commonly used. The properties of silicon carbide ceramics also vary depending on the sintering method

Pressureless sintering can produce parts with complex shapes and large-sized silicon carbide ceramic parts.

Material data:

Item	Unit	SSIC
Density	g/cm3	3.10-3.15
Hardness	HRA	92--94
Apparent porosity	%	<0.2
Compressive strength	Mpa	≥2200
Flexural strength	Mpa	≥400
Elastic Modulus	Gpa	400
Thermal conductivity (20 C)	W/m k	120--150
Thermal expansion coefficient	10 -6 1/c	4
Maximum use temperature	c	1600

4.Reaction sintering is currently the most commonly used sintering method for functional ceramics and special ceramics. Because of its relatively simple production process and low production cost, application:silicon carbide seals, silicon carbide bearings,silicon carbide nozzles ect.
 

Material data:

Item	Unit	RBSIC
Bulk density	g/cm3	≥3.03
hardness	HRA	91--93
Apparent porosity	%	<0.2
Flexural strength	Mpa	≥350
Compressive strength	Mpa	≥2000
Thermal Conductivity	W/m k	50~110
Thermal expansion coefficient	10 -6 1/C	4
Elastic Modulus	GPa	350
Free silicon content	%	<12
Maximum use temperature	C	1000