Silicon Nitride Ceramics Of Structure Parts As Valve Welding Roller Thermocouple Protection Tube

High-Performance Silicon Nitride Ceramics Of Structure Parts As Valve Welding Roller Thermocouple Protection Tube

Product Description:

Silicon nitride ceramics is a high-performance engineering material that is widely used in various industries. It is a type of advanced ceramic material made from silicon nitride (Si3N4) with the addition of other elements such as aluminum, oxygen, and yttrium to enhance its properties. This product is known for its excellent mechanical, thermal, and electrical properties, making it suitable for a wide range of applications.

Silicon nitride ceramics is widely used in various industries due to its excellent properties. Some of its key applications include:

• SI3N4 ceramic ball bearings for high-speed and high-temperature operations
• SI3N4 ceramic cutting tools for machining hard and abrasive materials
• SI3N4 ceramic components in aerospace and defense industries for their lightweight and high strength properties
• SI3N4 ceramic parts in automotive engines for their high wear resistance and thermal stability
• SI3N4 ceramic blades in medical equipment for their biocompatibility and corrosion resistance

• High strength and hardness, making it suitable for demanding applications
• Excellent thermal shock resistance, allowing it to withstand rapid temperature changes
• Low coefficient of thermal expansion, ensuring dimensional stability at high temperatures
• High dielectric strength, making it suitable for use in electrical insulation applications
• Good chemical resistance, making it suitable for use in harsh chemical environments

Silicon nitride ceramics is a highly versatile and reliable material that offers a unique combination of properties. It is widely used in various industries for its exceptional strength, hardness, and thermal properties. The addition of other elements to the silicon nitride base allows for further enhancement of its properties, making it suitable for a wide range of applications. SI3N4 ceramic ball, SI3N4 ceramic ball, SI3N4 ceramic ball, SI3N4 ceramic ball - choose Silicon Nitride Ceramics for your next high-performance engineering project.

Features:

• Product Name: Silicon Nitride Ceramics
• Hardness: 14.9GPA
• Density: 3.2 G/cm3
• Dielectric Strength: 18-20 KV/mm
• Poisson's Ratio: 0.27
• Color: Black/Gray
• SI3N4 ceramic ball
• SI3N4 ceramic ball
• SI3N4 ceramic ball
• Si3N4 ceramic bearing
• Si3N4 ceramic bearing
• Si3N4 ceramic bearing

Technical Parameters:

1. Ceramic bearings have the characteristics of high temperature resistance, cold resistance, wear resistance, corrosion resistance, non-magnetic and electrical insulation, oil-free self-lubrication, and high speed.

It can be used in extremely harsh environments and special working conditions, and can be widely used in aviation, aerospace, navigation, petroleum, chemical, automotive, electronic equipment, metallurgy, electric power, textiles, pumps, medical equipment, scientific research, national defense and military fields. High-tech products for the application of new materials.

2. The ceramic bearings, rings and rolling elements produced by this product are made of all-ceramic materials, including zirconia (ZrO2), silicon nitride (Si3N4) and silicon carbide (SiC). The retainer is made of polytetrafluoroethylene, nylon 66, polyetherimide, zirconia, silicon nitride, stainless steel or special aviation aluminum, thus expanding the application range of ceramic bearings. Such as: high-speed bearings, high-temperature bearings, corrosion-resistant bearings, antimagnetic bearings, electrical insulation bearings, etc.

(1) High-speed bearing: It has the advantages of cold resistance, small force elasticity, high pressure resistance, poor thermal conductivity, light weight, and small friction coefficient. It can be applied to high-speed spindles and other high-speed spindles with a speed of 12,000 rpm to 75,000 rpm. Precision equipment.

(2) High temperature resistant bearing: The material itself is resistant to high temperature of 1200°C, and is self-lubricating. The use temperature is between 100°C and 800°C without expansion caused by temperature difference. It can be used in high temperature equipment such as furnace, plastic making, steel making, etc.

(3) Corrosion-resistant bearings: The material itself has corrosion-resistant properties and can be used in fields such as strong acids, strong alkalis, inorganic, organic salts, and seawater, such as: electroplating equipment, electronic equipment, chemical machinery, shipbuilding, medical equipment, etc.

(4) Antimagnetic bearing: Because it is non-magnetic and does not absorb dust, it can reduce the bearing peeling off in advance and loud noise. It can be used in demagnetization equipment, precision instruments and other fields.

(5) Electrically insulated bearings: Because of the high electrical resistance, the bearings can be protected from arc damage and can be used in various electrical equipment requiring insulation.

(6) Vacuum bearings: Due to the unique oil-free and self-lubricating characteristics of ceramic materials, it can overcome the problem that ordinary bearings cannot achieve lubrication in an ultra-high vacuum environment.

Note: For the above five types of bearings provided by our company, the same set of bearings can be used in high temperature, high speed, acid-base, magnetic field, non-insulation, but the material properties are different (please refer to the performance table of rare earth ceramic materials). When customers choose products, they inform us of the application occasions, and we will select the most suitable ceramic bearings for you.

3. List of bearing models

(1) Deep groove ball bearings (technical grade: P4, P5, P6, P0)

Deep groove ball bearings, the most representative rolling bearings, have a wide range of uses and can bear radial loads and bidirectional axial loads. It is suitable for high-speed rotation, low-noise and low-vibration occasions, or high temperature, high cold, corrosion, magnetic field, non-insulation and other fields where steel bearings cannot be used.

(2) Self-aligning ball bearing

The outer ring raceway of the self-aligning ball bearing is spherical and self-aligning, which can supplement the error caused by the misalignment and shaft deflection. It is used to produce non-concentric or shaft deflection parts between the shaft and the shell, and the alignment parts required by high temperature, low cold, corrosion, and magnetic field non-insulation.

Note: The inclination cannot exceed 3 degrees.

(3) Single row angular contact ball bearings (technical grade: P4, P5, P6, P0)

Angular contact bearings are suitable for high-speed and high-precision rotation. They do not affect their accuracy in high temperature, magnetic field, water, etc., and can withstand composite loads. The standard contact angles are 15°, 30° and 40°. The larger the contact angle, the greater the axial load capacity, and the smaller the contact angle. The bearing can withstand radial load and unidirectional axial load. Generally adopted in pairs installation. Please pay attention when purchasing.

(4) One-way thrust ball bearing

The one-way thrust ball bearing is composed of a washer-shaped ring with a ball rolling raceway and a cage assembled with the ball. It can bear axial load but not radial load.

4. Characteristics of ceramic bearing materials

(1) Please refer to the table of common bearing materials

(2) Compared with the performance of bearing steel, its own weight is 30%-40% of bearing steel, which can reduce the increase of dynamic body load and slip caused by centrifugal force. Because the high wear-resistant speed is 1.3 to 1.5 times that of bearing steel, it can reduce the surface damage of the channel caused by high-speed rotation. The modulus of elasticity is 1.5 times higher than that of bearing steel. The force elasticity is small, which can reduce the deformation caused by the high load. The hardness is twice that of bearing steel, which can reduce wear. Compression resistance is 5-7 times that of bearing steel. The coefficient of thermal expansion is less than 20% of bearing steel. The friction coefficient is less than 30% of the bearing steel, which can reduce the heat generated by friction and reduce the bearing failure caused by high temperature. The tensile and bending resistance are the same as metal.

Applications:

Silicon Nitride Ceramics, also known as SI3N4 ceramic ball, is a type of advanced ceramic material made from silicon nitride (Si3N4) powder. It is a high-performance material with excellent mechanical, electrical, and thermal properties, making it widely used in various industries.

Our Silicon Nitride Ceramics are proudly made in China, where we have a team of highly skilled technicians and advanced manufacturing facilities to ensure the quality and consistency of our products.

• Bending Strength: Our Silicon Nitride Ceramics have a bending strength of 800-1200 MPa, which is significantly higher than other traditional ceramics. This makes it suitable for applications that require high strength and durability.
• Dielectric Strength: With a dielectric strength of 18-20 KV/mm, our Silicon Nitride Ceramics can withstand high voltage and electric fields without breaking down. This makes it an ideal material for electrical insulation and components.
• Poisson's Ratio: The Poisson's Ratio of our Silicon Nitride Ceramics is 0.27, which means it has a low tendency to deform under stress. This makes it suitable for applications that require high precision and stability.
• Fracture Toughness: Our Silicon Nitride Ceramics have a fracture toughness of 7 MPa, making it resistant to crack propagation and ensuring its reliability under extreme conditions.
• Compressive Strength: With a compressive strength of 3800 MPa, our Silicon Nitride Ceramics can withstand high compressive forces without breaking, making it ideal for applications that require high load-bearing capacity.

Due to its excellent properties, Silicon Nitride Ceramics have a wide range of applications in different industries, including:

• Mechanical Engineering: Our Silicon Nitride Ceramics are often used in high-performance bearings, cutting tools, and mechanical components due to their high strength, wear resistance, and low friction.
• Electronics: With its high dielectric strength, our Silicon Nitride Ceramics are commonly used in electronic components, such as insulators, circuit boards, and sensors.
• Automotive: Our Silicon Nitride Ceramics are used in automotive components, such as turbochargers, engine parts, and exhaust systems, due to its high temperature resistance and durability.
• Aerospace: Due to its lightweight and high strength, Silicon Nitride Ceramics are used in aerospace applications, such as turbine blades, heat shields, and rocket nozzles.
• Chemical Industry: Our Silicon Nitride Ceramics are resistant to corrosion and chemical attacks, making it suitable for use in chemical processing equipment and reactors.

Overall, Silicon Nitride Ceramics, with its unique combination of properties, have become an indispensable material in various industries, providing high performance and reliability in challenging environments.

Customization:

Place of Origin: China

Fracture Toughness: 7 MPa

Color: Black/Gray

Dielectric Strength: 18-20 KV/mm

Hardness: 14.9GPA

Compressive Strength: 3800 MPa

• High-quality SI3N4 ceramic material
• Excellent fracture toughness of 7 MPa
• Available in black or gray color options
• High dielectric strength of 18-20 KV/mm
• Impressive hardness of 14.9GPA
• Strong compressive strength of 3800 MPa

FAQ: