High-Performance Carbon Materials for Vacuum Furnace Services
Professional Graphite Felt, Carbon Carbon Composite Material Manufacturer
Since 2001, Dalian Shuangji Technology Development Co., Ltd. has focused on the production, processing and sales of carbon-carbon composite materials, as well as carbon felt and other carbon thermal insulation materials.
Over the years, we have accumulated rich experience and achievements in the field of graphite supply both domestically and internationally. With our expertise in graphite materials and the applications, as well as our extensive product line and technical services covering graphite soft felt, rigid felt, and carbon-carbon composites, we have established ourselves as a preferred partner for our customers. Even when faced with the most challenging applications, we can work closely with customers to find the best solutions together.
Our graphite rigid felt, soft felt, C/C composite materials, and machined components all have a wide range of applications. For instance, carbon-carbon composite products play a crucial role in the hot zone of monocrystalline silicon, while CFC racks, load-bearing plates, channels & profiles, bolts, and nuts are widely used in heat treatment processes. These diverse applications fully demonstrate our professional capabilities and rich experience in the field of carbon material processing.
Technical Support
Our technical support team is here to assist you in selecting the products that best suit your applications and processes. As a graphite manufacturer for high-temperature insulation material, C/C composites, we work closely with our clients, providing selection assistance, design support, and production services for carbon fiber composites materials such as carbon-carbon composites and carbon felts suitable for various high-temperature applications. For many years, we have been providing stronger, lighter, and more durable carbon fiber composites, graphite soft felt, rigid felt, and other products, offering cost-effective solutions for an increasingly broad range of applications and industries.
Rich Experience
As a supplier specializing in customized C/C composite materials and carbon felt products, we possess 23 years of experience in researching, comparing, and screening graphite raw materials both domestically and internationally. We have a profound understanding of the physical properties, advantages, and disadvantages of materials from around the world. With our own database, we can provide customers with more effective material optimization, substitution, and performance enhancement solutions. Additionally, we excel in ensuring high product yield, uniform tolerances, and polishing consistency in our processed products. By using scalable and cost-effective C/C composites to replace traditional materials, SHJ can help you achieve previously elusive performance requirements and sustainability goals.
Professional Services
Our service team consists of professional technical engineers who have served in the vacuum furnace industry for over 20 years. They excel in the optimization of vacuum furnace hot zone structures and vacuum systems, specializing in vacuum furnace design, upgrades, maintenance, parts sales, and after-sales service. We can provide equipment manufacturers and users with matching suggestions or experience tailored to different graphite materials and operating environments, recommending suitable carbon fiber composite materials based on the working conditions of their furnaces.
In addition, we also offer appropriate application guidance or on-site installation instructions to assist customers in selecting the right carbon-carbon composites, carbon felts, and other graphite products.
Global Shipping
With the expansion of our business, our products have now been sold to over 30 countries and regions across Asia, Europe, Oceania, South Africa, and North America. We can customize packaging solutions for carbon fiber and carbon-carbon composite materials according to customer needs, offering various options such as wooden boxes and pallets. Depending on the weight of the cargo and delivery requirements, we select the most cost-effective transportation method, including express delivery, sea freight, air freight, rail transport, and multimodal transportation.
05/High-Quality Products
We offer a diverse range of CFC products, including heaters, U/L profiles, fasteners, screws, plates, heat treatment furnace racks, and CFC machined parts. Due to their unique properties, these products have found widespread applications in various industries such as the automotive industry, medicine, photovoltaics, and semiconductors. For instance, they are used as hot zone materials in photovoltaic crystalline silicon growth equipment, in semiconductor ingot furnaces, and as brake pads for automobiles. Additionally, our high-purity carbon fiber insulation materials, graphite rigid felts, and soft felts are also suitable for high-temperature applications in inert or vacuum environments.
We look forward to discussing with you to determine which grade of graphite is best for your application.
CFC Products:
CFC Fasteners, Springs, Rods, Fixtures, Grids, Baskets, Shelves, U/L/H Profiles, Channels, Crucibles, Molds, Heaters, Plates and More.
Graphite Felt - Heat Insulation Material:
Graphite rigid felt, soft felt. (We can provide graphite felt made from PAN-based, rayon-based, and pitch-based materials.）
CFC (Carbon Fiber Composites): Lightweight and Durable Solutions for Vacuum Furnaces
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Graphite Furnace Tube | High-Purity Heating Tubes For Hot Zones
Isostatic Graphite Material: Made from high-quality Isostatic Graphite, offering excellent heat
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Custom Graphite Trays For Vacuum & Sintering Furnaces
High-purity, fine-grain graphite: Ensures minimal contamination and consistent performance in
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Vacuum Furnace Hot Zone Materials
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C/C heaters have outstanding features of high strength and elasticity in comparison to traditional
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Graphite Heating Pipe For Vacuum Furnace Parts
Isostatic Graphite Material: Made from high-quality Isostatic Graphite, offering excellent heat
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High-purity graphite rigid felt for extreme temperature environments.Low thermal conductivity,
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Carbon-Carbon Composite Rings: Revolutionizing The Hot Pressing Field
In the realm of hot pressing technology, carbon-carbon composite rings have emerged as a
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Rigid Graphite Felt For Industrial Furnaces
Graphite Felt - ideal thermal Insulation Material for Industrial Furnaces Graphite felt is an ideal
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Rigid Graphite Felt
◆ Summary
Rigid Graphite Felt is carefully crafted through a series of specialized processes, integrating graphite paper, graphite felt, and carbon cloth, followed by solidification, shaping, and a second high-temperature purification treatment. This unique manufacturing process gives graphite felt its characteristics of high purity and high carbon content, while also exhibiting excellent ablation resistance and thermal shock resistance. Additionally, the felt demonstrates superior performance in airflow erosion, thermal insulation, and heat preservation.
◆Applications
Due to its outstanding performance, rigid graphite felt has found widespread applications in various fields, such as single crystal growth furnaces, polycrystalline casting furnaces, polycrystalline reduction furnaces, polycrystalline ingot casting furnaces, vacuum sintering furnaces, hot pressing furnaces, thermal balance furnaces, electromagnetic induction furnaces, medium and high-frequency induction furnaces, as well as high-temperature equipment in non-oxidizing atmospheres and high-purity silicon hydrogenation furnaces.
In vacuum industrial furnace equipment, graphite hard felt plays an irreplaceable role. It is used in ultra-high-temperature vacuum high-pressure sintering furnaces, providing robust support for this equipment. its stable performance and reliable quality enable this high-end equipment to operate continuously and efficiently.
At the same time, carbon and graphite rigid felt has made significant contributions to the development of related industries in the fields of electronic semiconductors, vacuum metallurgy, new chemical materials, and solar photovoltaics.
◆Customer Service
SHJ Graphite's outstanding carbon and graphite rigid felt insulation machining capabilities enable us to provide highly customized, complex components and engineered solutions. Our engineers have the engineering capabilities to provide a complete thermal design solution for your application.
We provide customized services based on drawings and are capable of manufacturing various non-standard and irregular geometric shapes, such as flat plates and cylinders.
Surface Treatments
|
Surface Treatment |
Protection Against Dust |
Airtightness |
Surface Protection |
Shock Resistance |
Advantages |
|
No Surface Treatment |
— |
— |
— |
— |
Good Air Permeability and Low Cost |
|
Graphite Paper Lamination |
⌾ |
⌾ |
⭕ |
⭕ |
Anti-dust Penetration and Heat Loss |
|
Carbon Cloth Lamination |
⭕ |
⭕ |
⌾ |
⭕ |
High Protection Strength, Long Service Life |
|
Special Coatings |
⌾ |
⌾ |
⌾ |
⌾ |
Anti-dust Penetration, High Protection Performance, High Purity |
|
Protection Classes: — Class Ⅰ ⭕ Class Ⅱ ⌾ Class Ⅱ |
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Specifications：
|
Material |
Graphite Rigid Felt |
Graphite Rigid Felt |
Graphite Rigid Felt |
|
|
Bulk Density |
g/cm 3 |
0.17 |
0.2 |
0.15-0.17 |
|
Compressive Strength |
MPa |
0.3 |
0.35 |
0.25 |
|
Thermal Conductivity (@1000℃) |
W/(m.k) |
0.35 |
0.43 |
0.20 |
|
Ash |
ppm |
≤200 |
≤200 |
≤200 |
|
Maximum Operating Temperature |
℃ |
3000 |
3000 |
2400 |
|
Surface Treatment |
We can provide various processing methods for graphite rigid felt according to the needs of users, including applying hardened coatings, attaching graphite paper, pasting carbon cloth, and attaching C/C plates. |
|||
|
Maximum Size |
mm |
Sheet: 2800*2100*300; Cylinder:φ1800/φ1400*1800 |
||
*The above values, sizes are typical, not guaranteed.
*The parameters in this table are standard products. If high purity products are required, purification treatment can be provided, with a purified ash content of 20PPM maximum.
*Special needs and high-end series products can be customized through negotiation and communication with our company.
Carbon and Graphite Soft Felts
Summary
SHJ insulation soft felt possesses an extremely low thermal conductivity, capable of resisting high temperatures and ablation. It is widely used as a thermal insulation material for various high-temperature equipment. Additionally, due to its flexibility, graphite soft felt can fill relatively complex spaces, making it a common choice for furnace repair materials.
In addition to the high purity, high temperature resistance, corrosion resistance, non-melting, small thermal conductivity, high temperature without deformation and other excellent properties of graphite felts, soft graphite felts also have the advantages of light weight and elasticity, can be folded arbitrarily, cut and can be sewn with graphite yarn, and so on.
We can provide customized products tailored to our customers' needs, offering different materials (PAN-based, Rayon-based) and performance requirements. These insulation soft felts can withstand temperatures up to 3000℃. Boasting a highly uniform thickness and density distribution, our soft felt ensures consistent and effective thermal insulation, delivering stable and long-lasting performance.
Applications
Graphite soft felt is widely used as an insulation material in various industries, including the solar energy industry, the semiconductor single-crystal silicon industry, the synthetic crystal industry, and the fiber optics industry, as well as in high-end vacuum sintering furnaces, heat treatment furnaces, and high-frequency induction furnaces. Additionally, graphite soft felt serves as a crucial insulating and refractory material in various high-temperature furnaces such as single-crystal furnaces, carburization furnaces, quartz furnaces, vacuum furnaces, induction furnaces, high-frequency furnaces, thermal balance reaction furnaces, heat treatment furnaces, sintering furnaces, and high-pressure furnaces.
Customer Service
Graphite felts are available in a wide range of sizes and thicknesses to meet design requirements. Customized sizes are also available upon request.
Features
First of all, it has a high purity, which can effectively reduce or reduce the secondary pollution of the product, to ensure product quality and purity.
Secondly, graphite carbon felt shows high softness and lightweight characteristics, making it have good operability, especially suitable for filling complex Spaces.
Finally, the graphite carbon felt also has a uniform thickness, which makes it easy to handle during processing, and the quality is stable and consistent, further ensuring its excellent performance in a variety of applications.
Specifications
|
Grade |
TSF1-01 |
TSF3-01 |
|
|
Material |
Graphite Soft Felt |
Graphite Soft Felt |
|
|
Bulk Density |
g/cm³ |
0.13 |
0.1 |
|
Thermal Conductivity (@1000℃) |
W/(m.k) |
0.24 |
0.15 |
|
Ash |
ppm |
≤500 |
≤200 |
|
The Maximum Operating Temperature |
℃ |
3000 |
3000 |
|
Maximum Size |
mm |
Width: 1600; Thickness: 5,10 |
|
*The parameters in this table are standard products. If high-purity products are required, purification treatment can be provided, with a purified ash content of ≤ 20PPM maximum.
*The above values are typical, not guaranteed.
*We offer customization for special needs and high-end products through negotiation and communication.
C/C Composite Materials
◆ Summary
Carbon-carbon composites (C/C) are lightweight and high-strength advanced materials with the ability to work stably in high-temperature environments in excess of 3,000°C. They can be used in a wide variety of applications, including insulation, thermal insulation, and thermal insulation.
Carbon-carbon composite materials such as CFC plates and channel are carbon-based insulation materials formed through the weaving of carbon-based fibers or pressure molding, followed by carbonization or high-temperature graphitization. They not only possess the excellent physical properties of graphite or carbon products, but also feature lightness and ease of processing.
◆ Applications
CFC is widely used in various fields such as aerospace metallurgy, heat treatment, semiconductors, photovoltaics, shipbuilding, and automobiles.
◆ Customer Service
We are committed to providing our customers with customized carbon-carbon composite products in a wide range of products including, but not limited to, plates, angle irons, U-channels, rings, pipes, tubes, columns, bolts, washers, heating elements, racks, and load-bearing structures. We are committed to meeting the specific needs of our customers, ensuring that the carbon composite products we provide are able to meet the requirements of a variety of complex and demanding work environments.
Features
Carbon-carbon composites (C/C composites) are carbon-carbon reinforced materials strengthened by high-strength carbon fibers, exhibiting a range of remarkable characteristics.
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High mechanical strength, high elasticity, and high toughness
C/C composites stand out with their high mechanical strength, high elasticity, and high toughness. Compared to isostatically pressed graphite, this material not only demonstrates superior strength and elasticity but also possesses excellent crack resistance and spalling resistance, ensuring its stability and durability in complex and extreme environments.
High heat resistance
The high heat resistance of carbon-carbon composites is another noteworthy feature. Compared to metallic materials, they maintain high strength even at elevated temperatures and can stably operate in temperatures exceeding 2000°C in inert gases, making them unparalleled in high-temperature applications.
Lightweight and easy to handle
Moreover, the lightweight nature of carbon-carbon composites is highly valued. With a lower density compared to metallic materials, they can easily achieve lightweight designs, providing more convenient and efficient solutions for various applications.
Achievable high thermal conductivity
It is worth mentioning that through the adoption of advanced carbon fiber structure control technology, carbon-carbon composites have achieved a thermal conductivity coefficient higher than copper. This characteristic endows them with broad application prospects in fields requiring efficient heat conduction, such as aerospace and electronic equipment.
In summary, C/C composite materials with their high mechanical strength, high elasticity, high toughness, high heat resistance, lightweight properties, and high thermal conductivity, have become an indispensable material in modern industrial fields.
Product Description
CFC Plate
The CFC plate is fabricated through high-pressure molding of carbon fabric, featuring an impressive 80% long-fiber content. This results in exceptional characteristics such as high strength, oxidation resistance, uniform material composition, and stable structure.
Due to these properties, the CFC plate finds extensive application in various industries, including photovoltaics, semiconductors, vacuum heat treatment furnaces, high-temperature brazing furnaces, and high-temperature sintering furnaces.
CFC Fastener
Carbon Carbon Composite Fasteners are designed for connection fastening needs in a wide range of high temperature areas, with many outstanding properties. Its high strength, low thermal conductivity, light weight, low coefficient of thermal expansion, showing excellent impact resistance and thermal shock resistance. At the same time, the fastener is safe and reliable, does not slip or crack when used, and the structure is stable and reliable. Excellent performance in tensile properties, high modulus.
The fastener is widely used in photovoltaic, semiconductor, high temperature vacuum and atmosphere furnaces such as vacuum heat treatment furnace, high temperature brazing furnace, high temperature sintering furnace and other fields, providing a reliable solution for the connection fastening under high temperature environment.
Applications include: heating elements, hearth rails, rack systems, insulation fasteners, molten metal pump components, powdered metallurgy and metal injection molding sintering trays and boats, high temp fasteners, glass manufacturing, specialized racing brakes and clutches, spark plasma sintering, and field assisted sintering technology.
Component of a Load Bearing Structure
Carbon-carbon structural components such as CFC nut, spring and bolt stand out for their excellent dimensional stability, thermal conductivity and durability, as well as their strong tensile properties and high modulus.
These outstanding properties have led to a wide range of applications in photovoltaics, semiconductors, vacuum heat treatment furnaces, high-temperature brazing furnaces, high-temperature sintering furnaces, and many other fields. Whether it's in an environment where precise dimensional control is required, or where efficient thermal conductivity and long-lasting durability are essential, carbon-carbon structures are uniquely positioned to provide reliable solutions for a wide range of high-temperature applications.
CFC U/L/H Profile and CFC Saggar
The CFC U/L/H profiles exhibit high strength, a high carbon fiber content, a long lifespan, and high purity.
The carbon/carbon saggar is a high-temperature container fabricated through precision processing of carbon/carbon composite materials. It boasts a lightweight design, high strength, excellent thermal shock resistance, high purity, and outstanding wear resistance, making it a superior upgrade to traditional graphite crucibles.
The carbon-carbon profile/channel demonstrates remarkable heat resistance, oxidation resistance, thermal shock resistance, and chemical corrosion resistance. This product exhibits high tensile strength and modulus, surpassing graphite in terms of strength and fracture resistance.
Due to these exceptional properties, this series of carbon-carbon composite materials finds widespread application in various fields, including photovoltaics, semiconductors, vacuum heat treatment furnaces, high-temperature brazing furnaces, and high-temperature sintering furnaces.
CFC Cylinder and Heaters
These CFC cylinder and heaters feature low density, high strength, minimal thermal deformation, uniform heat distribution, easy installation, and long lifespan.
CFC heater can be used in the system of high temperature and thermal field.
Application areas include photovoltaics, semiconductors, vacuum heat treatment furnaces, high-temperature brazing furnaces, and high-temperature sintering furnaces.
Specifications
|
Material |
C/C |
C/C |
C/C |
C/C |
|
|
Bulk Density |
g/cm³ |
1.3 |
1.4 |
1.45 |
1.6 |
|
Compressive Strength |
MPa |
≥100 |
≥150 |
≥150 |
≥150 |
|
Flexural Strength |
MPa |
≥120 |
≥120 |
≥150 |
≥150 |
|
Tensile Strength |
MPa |
≥60 |
≥80 |
≥80 |
≥100 |
|
CTE |
10-6/℃ |
≤4 |
≤4 |
≤4 |
≤4 |
|
Thermal Conductivity (@1000℃) |
W/(m.k) |
20-30 |
20-30 |
20-30 |
20-30 |
|
Ash |
ppm |
<200 |
<200 |
<200 |
<200 |
|
Maximum Size |
mm |
φ1800*φ1400*1800 |
|||
*The parameters in this table are for standard products. If high purity products are required, purification treatment can be provided, with a purified ash content of ≤20PPM maximum.
*The above values are typical, not guaranteed.
*Special needs and high-end series products can be customized through negotiation and communication with our company.
FAQ
Q: What are carbon-carbon composites？
Q: What kind of industrial furnaces are carbon-carbon composites typically used in?
Q: What are the advantages of carbon-carbon fasteners?
Q: Can carbon-carbon composite components with special shapes be customized?
Q: Which industries are carbon-carbon composites used in?
Additional Applications: Beyond these sectors, carbon-carbon composites are extensively used in fields such as energy, healthcare, and sports equipment.
Packaging Details
Each item is securely packaged in plywood cases.
Individual pieces are separated by thick foam to prevent contact and abrasion.
Contents are tightly packed to ensure minimal movement during transit.
Custom packaging options are available upon request.
Request A Quote
We're here to help! Whether you have questions, feedback, or want to inquire about the current prices for graphite felt and CFC, feel free to get in touch with us.
We're well-known as one of the leading vacuum furnace service manufacturers and suppliers in China. If you're going to buy high quality vacuum furnace service for sale, welcome to get free ample from our factory. For price consultation, contact us.
graphite crucible for induction furnace, Carbon Fiber Composite Materials, Graphite soft felt