Hexagonal Boron Nitride Ceramic Square Crucible for Gold Melting

• Application: Melting
• Color: White
• Material: Boron Nitride
• Model NO.: BN Crucible
• Shape: Cylindrical
• Volume Resistivity: 10 ^ 8~10 ^ 13 or 3.11X10 ^ 11
• Pbn Ceramics Advantage: High Strength, Good Thermal Conductivity
• Compressive Strenght: 287
• Business Types: Manufacturer
• Maximum Use Temperature: 2200 or 2400
• Processing Service: Moulding
• Density: 2.2~2.3 or 2.2~2.3
• Thermal Conductivity (20°c): 35 or 43-60
• Transport Package: Customized Package
• Specification: Customized
• Trademark: INNOVACERA
• Origin: Fujian, China
• Production Capacity: 1000 Piece/Pieces Per Month

Product Description

Boron nitride is an excellent self-lubricating ceramic that can withstand high temperatures and maintain its lubrication capabilities in high vacuum environments.
Usually composed of hexagonal boron nitride (P-BN), it has good heat resistance, thermal stability, thermal conductivity, high temperature dielectric strength, and is an ideal heat dissipation material and high temperature insulation material.
Due to its high thermal and chemical stability, boron nitride crucibles are used in high temperature applications.
 

Boron nitride crucible can withstand high temperatures in the high vacuum environment, plus it has excellent corrosion resistance and electrical resistance. Thus, boron nitride ceramic crucible is an ideal choice in a wide range of industries, such as:

• Nonferrous & ferrous metals such as Al, Bi, Ge, Sb, Sn, Cd, Pb, Ni, Zn, Cu, Mg, Im, Fe, and Stainless Steel.
• Glass melt, Soda glass, Cryolite
• Silicon molten salt, fluoride, slag

Boron Nitride Crucible Advantages:

1.Low wettability to molten metal
2.Relatively high thermal conductivity with low thermal expansion
3.Relatively high thermal shock resistance
4.Extremely high working temperature with proper inert gas protection

The working temperature of the boron nitride ceramic crucible is 1900°C under vacuum and 2100°C under atmosphere protection. Nitrogen or argon atmospheres are best, it makes have the longest life.

The boron nitride crucible has strong thermal shock resistance, 1500°C fast cooling without cracking, and 1000°C furnace holding for 20 minutes, taking it out and blowing and fast cooling for hundreds of times continuously without cracking.

 

 

 

Pro

Properties	Unit	UHB	HB	BC	BMS	BMA	BSC	BMZ	BAN
Main Composition	-	BN>99.7%	BN>99%	BN>97.5%	BN+Al+Si	BN+Zr+Al	BN+SiC	BN+ZrO2	BN+ALN
Color	-	White	White	White	White Graphite	White Graphite	Greyish-Green	White Graphite	Greyish-Green
Density	g/cm3	1.6	2	2.0-2.1	2.2-2.3	2.25-2.35	2.4-2.5	2.8-2.9	2.8-2.9
Three-Point Bending Strength	MPa	18	35	35	65	65	80	90	90
Compressive Strength	MPa	45	85	70	145	145	175	220	220
Thermal Conductivity	W/(m·k)	35	40	32	35	35	45	30	85
Thermal Expansion Coefficient  (20-1000°C)	10-6/K	1.5	1.8	1.6	2	2	2.8	3.5	2.8
Max Using Temperature	(°C)	900	900	900	900	900	900	900	900
In Atmosphere		2100	2100	2100	1750	1750	1800	1800	1750
In Inactive Gas		1800	1800	1900	1750	1750	1800	1800	1750
In High Vacuum
(Long Time)
Room Temperature Electric Resistivity	Ω·cm	>1014	>1014	>1013	>1013	>1013	>1012	>1012	>1013
Typical Application	-	Nitrides Sintering	High Temperature  Furance	High Temperature  Furance	Powder  Metallurgy	Powder  Metallurgy	Powder  Metallurgy	Metal  Casting	Powder  Metallurgy
High Temperature Electrical  Furnace Components	-	-	√	√	√	√	√	√	√
Metal Vaporize Crucible			√	√					√
The Container of Metal	-	√	√	√	√	√	√	√	√
or Glass Melting
The Casting Mould Components of The  Precious Metal and Special Alloy.	-	-	-	√	-	√	-	-	√
High Temperature	-	-	-	-	-	√	-	√	√
Support Part
Nozzle and Transport Tube of  The Melting Metal	-	-	√	√	√	√	√	√	√
Nitrides Sintering	-	√	-	-	-	-	-	-	-
(Sagger and Setter Plate)

e Unit HB BC BMS BMA BSC BMZ BA