Quartz Tube
Quartz Plate
Quartz Rod
Optical Applications
Semiconductor Industry
Laboratory and Chemical Applications
Our high-purity quartz thermal blocks are engineered as essential insulation and sealing components for tube furnaces. Featuring a robust quartz exterior combined with internal high-purity alumina fiber insulation, they effectively reduce heat loss, maintain precise temperature uniformity, and control atmospheric conditions up to ~1200°C. Available in various shapes and custom sizes to perfectly fit your quartz tube furnace, these plugs are crucial for energy efficiency, optimized thermal profiles, and reliable performance in demanding high-temperature applications.
Remarks：
- ayment method: By wire transfer or advance payment, depending on the quantity of the order.
- Delivery time: According to the order quantity.
- Transportation method: Sea freight or air freight, depending on the customer.
| Property Content | Property Values |
|---|---|
| SiO2 | 99.99% |
| Density | 2.2×10³ kg/cm³ |
| Hardness | 5.5 - 6.5 Mohs' Scale 570 KHN 100 |
| Tensile Strength | 4.8×10⁷ Pa (N/mm2) (7000 psi) |
| Compression Strength | >1.1×10⁹ Pa (160,000 psi) |
| Coefficient of Thermal Expansion | 5.5×10⁻⁷ cm/cm·°C (20°C-320°C) |
| Thermal Conductivity | 1.4 W/m·°C |
| Specific Heat | 670 J/kg·°C |
| Softening Point | 1730°C (3146°F) |
| Annealing Point | 1210°C (2210°F) |
| Strain Point | 1120°C (2048°F) |
| Work Temperature | 1200°C (2192°F) |
| Electrical Resistivity | 7×10⁷ ohm cm (350°C) |
| Size | Customized |
| Logo | Customized Logo Accept |
Excellent High-Temperature Stability
Designed for demanding furnace environments, these thermal blocks can withstand continuous operating temperatures up to ~1200°C without degradation or deformation. This ensures long-term reliability and performance even in extreme thermal cycles.
Optimal Atmosphere Control & Sealing
The precision design and robust construction provide an effective seal for tube furnace ends, minimizing gas leakage and preventing ambient air ingress. This is crucial for maintaining inert, vacuum, or specific gas atmospheres essential for sensitive material processing.
Customizable for Perfect Fit & Versatility
Available in various standard configurations and fully customizable in terms of dimensions (thickness, outer diameter), shapes (cylindrical, oval, multi-tiered), and with or without handles, these blocks can be precisely tailored to fit any quartz tube furnace, offering versatile solutions for diverse research and industrial applications.
Superior Thermal Insulation & Energy Efficiency
Constructed with a high-purity quartz outer shell and internal high-purity alumina fiber insulation, these blocks significantly reduce heat loss from the ends of tube furnaces. This leads to substantial energy savings and helps maintain consistent temperature profiles within the processing zone.
Application Scenario
Maintaining Controlled Atmospheres in Tube Furnaces
Essential for sealing the ends of quartz tube furnaces to create and maintain specific gas environments (e.g., inert argon/nitrogen, reducing hydrogen, or vacuum). This is critical for processes like CVD, annealing, or sintering where atmospheric purity and stability are paramount.
Optimizing Temperature Uniformity & Reducing Heat Loss
Placed at the ends of the furnace tube, these thermal blocks significantly reduce axial heat loss. This helps to create a more uniform temperature zone within the furnace, leading to more consistent experimental results and substantial energy savings during prolonged high-temperature operations.
High-Temperature Material Processing & Synthesis
Used in research and industrial settings for the synthesis, purification, or heat treatment of advanced materials (e.g., ceramics, semiconductors, catalysts) that require precise temperature control and isolation from external atmospheric contaminants.
Protection of Furnace Components from Reactants
While the primary tube contains the reaction, these blocks provide an additional layer of thermal and chemical separation, protecting the furnace’s internal insulation and heating elements from potential corrosive byproducts or reactive gases that might escape the main reaction zone.
Handle with care
Quartz glass products are made from valuable materials and must be handled gently to avoid collisions and falls.
Regular maintenance
The maintenance of quartz tubes must be performed regularly to ensure their long-term stable performance. Regularly check the connections, fixings, and mechanical vibrations of the quartz tubes to prevent abnormalities. The exterior of the quartz tubes is prone to contamination from dust and moisture, so they should be cleaned regularly.
Storage environmen
When storing quartz tubes, care should be taken to avoid exposure to mechanical vibrations, shocks, and excessively high temperatures. They should be kept in a dry, cool, and well-ventilated place, avoiding direct sunlight and high-temperature environments.
These thermal blocks are designed to be inserted into the ends of your quartz tube furnace, acting as plugs or caps. While we offer a range of common sizes, they are primarily customizable to ensure a precise fit for your specific furnace tube’s inner and outer diameter, as well as the required thickness. We recommend providing your furnace model and tube dimensions to ensure perfect compatibility.
Yes, they significantly contribute to both. By minimizing heat loss from the ends of the tube furnace, these thermal blocks help your furnace reach and maintain desired higher temperatures more efficiently. More importantly, they create a more stable and uniform temperature profile across your processing zone, which is crucial for sensitive material synthesis and annealing processes.
The high-purity alumina fiber insulation encased within the quartz shell provides excellent thermal baffling and insulation properties. This composite design combines the chemical inertness and high-temperature resistance of quartz with the superior insulating capabilities of alumina fiber, maximizing heat retention and drastically reducing energy consumption compared to using quartz alone or less efficient insulating materials.
Laser Drilling of Quartz
Threaded Quartz Tube
External Thread on Quartz Tube
Internal Threaded Quartz Tube
Quartz Tube Slotted
Window on Quartz Tube
Angled Cut Quartz Tube
Quartz Tile
Quartz Tube with Window
Frequently asked questions
We specialize in the end-to-end manufacturing of high-purity quartz glass components. Our core product lines include:
Quartz Tubing & Rods: A wide range of diameters and specifications.
Quartz Plates & Discs: Precision-cut and polished for optical and industrial use.
Quartz Labware: A full suite of standard and custom glassware, including beakers, flasks, and boats.
Semiconductor-Grade Quartz: High-purity components like process tubes and carriers for semiconductor fabrication.
Custom Fabricated Components: We can produce complex parts tailored to your unique designs and specifications.
Yes. Custom fabrication is at the core of our business. With over a decade of specialized experience, we partner with companies to provide expert OEM/ODM services. Our capabilities include welding, grinding, drilling, polishing, bending, and other precision processing techniques to create components that meet your exact requirements.
Quality is paramount in our manufacturing process. We are an ISO 9001:2015 certified manufacturer, ensuring that our processes meet international quality management standards.Our products also undergo rigorous SGS testing for purity and performance. We use high-purity raw materials (up to 99.998% SiO2) to produce fused quartz and fused silica products with exceptional thermal stability, high-temperature resistance, and chemical inertness.
We've streamlined our process to be as efficient as possible:
Submit Your RFQ: Send us your technical drawings, specifications, and requirements via our website contact form or email.
Rapid Response: You can expect an initial response within minutes and detailed communication within half an hour.
Design & Proposal: We will deliver a detailed design proposal and a competitive quote within 24 hours.
Prototyping & Production: Upon approval, we move swiftly from prototyping to full-scale production to meet your deadlines.
Partnering with Aoxin Quartz offers several key advantages:
Proven Expertise: With 10+ years in the industry, we have the technical knowledge to tackle complex challenges.
One-Stop Solution: We manage the entire production process, from sourcing high-purity raw materials to fabricating and finishing complex components.
Competitive Value: Located in a major quartz production hub, we leverage an efficient supply chain and advanced manufacturing to offer exceptional quality at a competitive price point.
Dedicated Partnership: Over 90% of our clients become long-term partners. We are committed to your success through responsive service, reliable quality, and innovative solutions.
