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CE Technical Ceramic Classifying Wheels

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CE Technical Ceramic Classifying Wheels

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Brand Name :	ZG
Model Number :	MS
Certification :	CE
Price :	USD10/piece
Payment Terms :	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability :	10000 pieces
Delivery Time :	5-8 working days

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CE Technical Ceramic Classifying Wheels

Technical Ceramic classifying wheels

In the field of ultrafine powder processing, air flow classification is an important means to obtain narrow distribution and ultrafine particles. The design and manufacture of classifying wheel is the core technology of the classifier. The air classifier of German alpai enjoys a good reputation in the world, and is the designated equipment of some powder manufacturers which require strict particle size distribution. There are usually two kinds of classifying wheels: metal and ceramics. For some materials sensitive to magnetic pollution, ceramic classifying wheels must be used.

Related Data

Main component			99%Al2O3	S-SiC	ZrO2	Si3N4
Main component			99%Al2O3	S-SiC	ZrO2	Si3N4
Physical Property	Density	g/cm3	3.9	3.1	6	3.2
	Water Absorption	%	0	0.1	0	0.1
	Sinter Temperature	°C	1700	2200	1500	1800
Mechanical Property	Rockwell Hardness	HV	1700	2200	1300	1400
	Bend Strength	kgf/mm2	3500	4000	9000	7000
	Compression Intensity	Kgf/mm2	30000	20000	20000	23000
Thermal Property	Maximum working temperature	°C	1500	1600	1300	1400
	thermal expansion coefficient 0-1000°C	/°C	8.0*10-6	4.1*10-6(0-500°C)	9.5*10-6	2.0*10-6(0-500°C)
	thermal expansion coefficient 0-1000°C	/°C	8.0*10-6	5.2*10-6(500-1000°C)	9.5*10-6	4.0*10-6(500-1000°C)
	Thermal Shock resistance	T(°C)	200	250	300	400-500
	Thermal Conductivity	W/m.k(25°C	31	100	3	25
	Thermal Conductivity	300°C)	16	100	3	25
Electrical Property	Resisting rate of Volume	◎.cm
	20°C		>1012	106-108	>1010	>1011
	100°C		1012-1013	–	–	>1011
	300°C		>1012	–	–	>1011
	Insulation Breakdown Intensity	KV/mm	18	semiconductor	9	17.7
	Dielectric Constant (1 MHz)	(E)	10	–	29	7
	Dielectric Dissipation	(tg o)	0.4*10-3	–	–	–

Main material execution:

silicon carbide (SiC);
silicon nitride (Si3N4);
aluminum oxide (Al2O3)
Zironia(ZrO2)

Ceramics classifying wheels have excellent mechanical properties and machinability, high temperature resistance, corrosion resistance, wear resistance, high strength, anti adhesion, low density, small friction coefficient and self lubrication, etc. the ceramic classifying wheel is widely used in powder refining and grading industry.

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