News | INNOVACERA

Boron Nitride Break Rings for Continuous Casting

Continuous casting is one of the most common metal manufacturing technologies. The liquid metal flows from a tundish into the mold, in which the strand shell is formed. The metal strand is then taken off continuously or intermittently, at a speed and solidification rate appropriate to the particular alloy.

Boron nitride with high chemical resistance against a vast majority of molten metals, combined with excellent thermal shock resistance makes it ideal for various molten metal contact applications. Additionally, due to the material’s strong high-temperature strength, moderate density, and big infiltration angle with molten steel, it exhibits good resistance to molten steel erosion and abrasion, extending the break ring’s service life significantly.

The ceramic break ring comes into contact with both the melt and the solidified alloy, and must satisfy correspondingly strict requirements:

Chemical resistance to the solidified metal
Good sliding properties
High thermal shock resistance
Defined thermal conductivity
High wear resistance

Boron Nitride Break Rings are extensively used in the metal casting Industry. Innovacera manufactures different boron nitride materials and boron nitride composites matched to different metal alloys, and it increases the lifetimes of the metals.

Boron Nitride Break RingsBoron nitride Ring

Why choose Silicon nitirde ceramic igniter?

Silicon Nitride Ceramic Igniter Is The Latest And Most Advanced Application Of Hot Surface Ignition Technology
▪ No Gas Leakage Or Deflagration
After the igniter is energized to reach the ignitable temperature, the combustible mixture is introduced. In terms of timing, gas leakage and deflagration in conventional ignition methods are completely avoided.
▪ Fully Adaptable
The high-power hot-surface ignition method perfectly adapts to changes in gas type, composition, air-fuel ratio, temperature, humidity, and oil pollution.
▪ The System Runs More Reliably, And Has No Interference With Other Electrical Appliances.
No noise, no deflagration. There is no need to lower your head to confirm whether the ignition is successful or not.
▪ It completely avoids the defects of low capability with high temperature and short life of the metal heating wire. It avoids the shortcomings that the silicon carbide heating element is loose, brittle, and needs to protect against water.
▪ Silicon nitride has outstanding advantages such as high working temperature, fast heating speed, compactness and solidity, and long working life.
▪ INNOVACERA Silicon Nitride Igniter has core intellectual property rights of silicon nitride ceramic heating elements and a number of invention patents.
▪ Our company has the widest product coverage in the field of hot surface ignition technology. The working voltage of the product extends from 4V to 240V. The power is from 10W to 300W. It can be applied to the ignition and heating of all gas and fuel oil equipment. INNOVACERA has the world’s highest temperature and smallest ceramic heating technology.

Silicon Nitride Pellet Igniter

High Temperature Ceramic Heater

Silicon Nitride Ceramic Heating Element

DC type Silicon Nitride Heater

Boron Nitride Atomizer Nozzle

Boron Nitride Atomizer Nozzle For Aluminum Powder Metal Gas Atomization

Powder metallurgy is one of the fast-growing sectors in the metal processing industry. And key quality parameters in the manufacturing of sophisticated powder metals are high atomization yield and tight particle size distribution.

The boron nitride nozzle is the key component of gas atomization, which largely determines the atomization rate, production efficiency and powder quality. But the nozzles face harsh conditions such as erosion, wear, high temperature, and severe thermal shock. In this case, its material determines the process stability and component life.

Boron Nitride Nozzle

Atomizer Nozzles made by Innovacera Boron Nitride minimize clogging and metal creep, reducing the frequency of nozzle replacement. Smooth surface finish and tighter tolerances thanks to the low coefficient of friction of boron nitride provide predictable particle size distribution from batch to batch. Additionally, extreme thermal shock resistance allows boron nitride nozzles to be used without extensive pre-heating.

Feature of boron nitride nozzles:
>Good resistance to thermal shocks
>Good resistance to high temperature in vacuum & gas protection condition
>Will not react with molten metals
>Non-wetting with molten metals and the nozzles will not be stuck
>Low thermal expansion coefficient

Innovacera’s engineers are constantly exploring the improvement of nozzles, and we develops a variety of material formula for boron nitride nozzles according to various gas atomization processes and powder materials to meet the needs of different users, we will give suggestion for material selection when inquiry.

Boron Nitride Atomizer Nozzle

Hot pressing Aluminum Nitride Used For Semiconductor Fabrication Equipments

Hot pressing Aluminum Nitride (AlN) ceramics are used as wafer heating plates and wafer holding electrostatic chucks in semiconductor fabrication equipments.

Advantages of Hot pressing ALN Aluminum nitride ceramic:

– High purity
– Electrical insulator
– High thermal conductivity
– Critical thermal management material
– Reduced Particulate Generation
– Corrosion/Erosion Resistance
– Controlled Electrical Properties

Properties:

Property	Units	Value
Flexural Strength, MOR (20 °C)	MPa	300-460
Fracture Toughness	MPa m1/2	2.75-6.0
Thermal Conductivity (20 °C)	W/m K	100-170
Coefficient of Thermal Expansion	1 x 10-6/°C	3.3-5.5
Maximum Use Temperature	°C	800
Dielectric Strength (6.35mm)	ac-kV/mm	16.0-19.7
Dielectric Loss	1MHz, 25 °C	1 x 10^-4 to 5 x 10^-4
Volume Resistivity (25°C)	Ω-cm	10¹³ to 10¹⁴

Typical Application:
– Cover plates and MRI equipment(Magnetic Resonance Imaging)
– High-power detectors, plasma generators, military radios
– Electrostatic chucks and heating plates for semiconductors and integrated circuits
– Infrared and microwave window material

Hot Pressing Aluminum Nitride Wafer

INNOVACERA’s Alumina Ceramic Igniter

Innovacera’s ceramic igniter could help you easily ignite fuels such as fuel oil, oil, wood chips, etc.

The shape of our alumina ceramic heater is special cylindrical,in combination with an extremely high surface temperature of 1000°C, heats up the supply air in the shortest possible time to an extremely high temperature. After a maximum of 90 seconds, the fuel is ignited.

Reasons for choosing Innovacera:

Efficient ignition
Long life
High quality
Excellent moisture resistance
Can be produced in small batches
And etc.

Alumina ceramic igniter further advantages:

• Ready assembled, easy-to-install systems
• Space-saving, noiseless and impervious to overheating (in case the blower fails)
• Extremely long-lasting and resilient
• Minimal energy consumption
• Completely electrically insulated
• No exposed electrical contacts
• No sensitive welding points
• Long lasting (non aging) • Time to ignition 60~90 seconds
• Available in 100V / 120V / 220V / 240VAC
• Fully electrically insulated with no exposed electric contacts
• Impervious to oxidation and corrosion
• Ignite wood pellet, wood chips, split logs, straw and other biomass
• Comply with RoHS, REACH regulation on Hazardous Subsctances

If you have any demand for ceramic igniters, please feel free to contact us. We will provide you with high quality products and services.

INNOVACERA’s Alumina Ceramic Igniter

Alumina Black Coating Igniter

METALIZATION SERVICES WE OFFER

In order to achieve the bonding and brazing purpose between ceramic to metal, ceramic to ceramic, a thin metallic coating will be applied on the designated section of ceramic parts, including the inner diameter, outer diameter, the end surface, or flat surface, afterwards, the ceramic components cured under high temperature, the metallic layer will adhered on the ceramic body tightly. This kind of technical ceramic parts are called as Metalized Ceramics.

Innovacera is a professional manufacturer with over 10 years of experience in ceramic metallization. We can offer you the following services

METALIZATION SERVICES WE OFFER:
Metalization with Moly-Manganese and Tungsten Manganese, most commonly applied on aluminum oxide, and beryllium oxide.

Coating thickness range: 10-40um

Gold, Nickel and other plated materials over metallization suitable for design requirements and improved brazing parameters.

In-house thickness measuring of metalized and plated surfaces through our XRF machine. Certified and Calibrated.

Ceramic to metal brazing – we work with commercial braze alloys, most commonly Copper, Gold and Silver-based alloys. We employ the appropriate brazing method for the joints of custom components based on material and geometry of the parts to be brazed.

Testing capabilities: We perform vacuum leak testing up to 10-9 Torr.

Our custom metalized ceramic components provide dependable solutions for a wide variety of applications in various industries, including but not limited to aerospace, military, sensors and telecommunication.

Our brazed components are used in a variety of products and systems, including but not limited to, aircraft and spacecraft components, fiber optics, medical components, microwave transmitting tubes, HV electrical conductors, vacuum electronics and vacuum feedthroughs.

METALIZATION SERVICES WE OFFER

Ceramic Heater For Evaporator

Innovacera’s ceramic heater is widely used in industrial and automotive applications. The highly reliable ceramic heaters allow customers to minimize the size of the heater while maintaining maximum wattage to support a rapid heating rate.

Recently, we help customer finish another project for evaporation used for a kind of analytical equipment. The temperature should be heated to 850°C, with integrated sensor. However, when customer received sample and the heat up time could not meet their request. After we further understand how customer used it and do more test, we made improvement. Finally, our ceramic heater worked very well.

We are very appreciated customer’s trust and support, we believe that as long as more communication and understanding, we will be able to find a solution to meet customers unique performance needs.

Here to have a look for our heater products.

If you have any inquiry, pls feel free to contact with us.

Ceramic Heater For Evaporator

Alumina Ceramic Heating Element

Ultra High Precision Ceramic Ring Gauges Ceramic Setting Ring

Innovacera developed a series of ceramic accessories for Inside Micrometers, Holtest and Dial Bore Gages. The ceramic material used mostly is zirconia.

The zirconia ceramic setting ring advantages:

High wear resistance and long service life
The coefficient of thermal expansion is very small, the effect of temperature is very small
The hardness is very high, there is no need to worry about surface scars.
Ring gauge management is simple (regular inspection interval is long, saving cost).

The Zirconia Ceramic Ring Gauges Technology:

Surface Roughness: Not more than Ra0.1um

Straight Angle: 0.05/φ100

Parallelism: Not more than0.015mm

Each 0.5mm as one size, from 1mm to 50mm.

Size	Dimensional interval	Roundness	Outer diameter tolerance:	Inner diameter tolerance	Hardness
1-29mm	0.5mm	0.5um	±1um	±1um	1200HV
30-50mm	0.5mm	0.8um	±1.6um	±1.5um	1200HV

Some Zirconia Ceramic Ring Gauges Innovacera made and size detail:

9mm, 10mm, 18mm, 20mm, 24mm, 25mm, 28mm

D(mm)	d(mm)	T(mm)	outer chamfer(mm)	inner chamfer(mm)
1-2	22	4	0.4	0.3
2.5-4.5	22	5	0.4	0.3
5-9.5	32	8	0.8	0.5
10-14.5	38	10	1.2	0.5
15-19.5	45	12	1.2	1.0
20-24.5	53	14	1.2	1.0
25-31.5	63	16	1.5	1.0
32-39.5	71	18	2.0	1.0
40-50	85	20	2.0	1.0

Ultra High Precision Ceramic Ring Gauges Ceramic Setting Ring

Ultra High Precision Ceramic Ring Gauges

Ceramic-to-Metal Brazing Components

Ceramic-to-Metal brazing components are widely used in electrical engineering due to their good performance for high-vacuum, high-voltage and high-pressure applications. We manufacture a large range of metalized ceramic components with the latest technologies to meet our client’s needs. Our metallizing processes could be customized according to client’s requirements.

Applications:
vacuum interrupters,
Electron tubes,
Gas discharge tube,
Vacuum capacitor,
Vacuum thyristors,
Surge arresters,
Thyristor housings,
Diode housings,
Power grid tubes,
Traveling wave tubes,
Insulator rings and cylinder,
X-ray tubes
etc.

If you want more information about our metallized ceramics, please feel free to contact us.

Ceramic-to-Metal Brazing Components

Application of Alumina Tubes

At present, the electric contacts on high pressure or ultra high pressure boilers are made of ultra pure alumina porcelain tubes as insulators. Because alumina tube has very high mechanical strength and excellent insulation performance, but also has a strong high temperature acid and alkali corrosion resistance, used for high pressure and ultra-high pressure boiler furnace water quality is good, the life can reach more than

At present, the electric contacts on high pressure or ultra high pressure boilers are made of ultra pure alumina porcelain tubes as insulators. Because alumina tube has very high mechanical strength and excellent insulation performance, but also has a strong high temperature acid and alkali corrosion resistance, used for high pressure and ultra-high pressure boiler furnace water quality is good, the life can reach more than one year.

In addition, the thermal shock resistance of the ultra-pure alumina porcelain tube is poor, which is easy to cause the insulator and porcelain sealing parts to leak due to damage. Therefore, in use, the electrical contact should be preheated as slowly as possible to prevent the motor from being damaged by steam flow impact and sudden temperature change.

We know that most high-pressure sodium lamps are made of alumina tubes, and the luminous flux of high-pressure sodium bulbs is closely related to the specific properties of alumina tubes.
Relevant factors include:
1.The light transmittance of alumina tube is related to the level, the alumina tube in use are polycrystalline alumina tube, the light transmittance is about 92%~93%, if the use of single crystal alumina tube its light transmittance can reach about 97%, but its performance is brittle, vibration resistance.
2. Air pressure in alumina tube.
3. Production process.
4. The emission performance of the electrode, that is, the overflow power should be low.

At present, high pressure sodium lamp is widely used to replace high pressure mercury vapor lamp, which not only increases the light flux but also saves the power loss, so it has a good development prospect.

Properties	Unit	Value
Main Composition	%	AL₂O_3;SiO_2:1.5%~3.5%; CaO:1.2%~2.8%;MgO:0%3.5%
Color	–	White
Bulk Density	g/cm³	3.6
Possion’s Ratio	–	0.22~0.23
Water Absorption	%	–
Flexural Strength	Mpa	300~340
(HV)Hardness	Gpa	312.2~13.5
Young’s Modulus of Elasticity	Gpa	280~320
Coefficient of linera Thermal Expansion	25℃~500℃，x10^-6 mm/℃	7.3-7.2
Thermal Conductivity	W/(m.k)	16~23
Specific Heat	X10 ³J/(Kg·K）	0.78
Dielectric Constant(1MHZ)	–	9.0~9.4
Dielectric Loss Angle	×10-4	5~10
Dielectric Strength	X10⁶ v/m	14~15

Alumina Ceramic Tube