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High-Purity Quartz Plate | Custom Fused Silica Windows & Substrates
Precision-engineered Quartz Plates and Discs (SiO2 >= 99.99%) featuring JGS1, JGS2, and JGS3 material grades. Our plates provide exceptional UV-IR transparency, extreme thermal resistance up to 1200°C, and micron-level flatness, tailored for the most demanding optical and industrial environments.
Product Overview
Our Quartz Plates and Discs are manufactured from premium fused silica, offering the perfect combination of optical clarity and physical durability. They are widely used as furnace viewports, semiconductor substrates, and UV-grade optical windows. We provide custom sizes, shapes (square, round, or irregular), and surface finishes ranging from ground to high-precision optical polishing to meet your exact technical requirements.
Available Types of Quartz Plate
We supply a diverse range of quartz plates tailored to specific industrial requirements:
- Optically Clear Fused Silica Sheets:Engineered for high-precision UV/IR window applications.
- JGS1, JGS2, and JGS3 Grades:Catering to different spectral transmission requirements from deep UV to near-IR.
- Large-Format Industrial Quartz Plates:Designed for heavy-duty furnace sight glasses and thermal liners.
- Opaque or Milky Quartz Plates:Utilized primarily for infrared heating elements and thermal insulation.
- Synthetic Fused Silica Substrates:Offering ultra-high purity for semiconductor masking and lithography.
Key Applications
- Semiconductor & Photovoltaics:Wafer carriers, etching tank covers, and masking substrates.
- Optical Windows:High-pressure viewports, laser system windows, and UV curing lamp sleeves.
- Laboratory Research:Chemical reaction surfaces, high-purity microscope slides, and analytical components.
- High-Temperature Industry:Furnace observation windows, thermal shields, and combustion liners.
Surface Finish Options
We offer several professional surface treatment levels to meet your specific application needs:
- Optical Polishing (Double-Sided):Achieving Scratch/Dig levels of 20/10 or 40/20 for maximum optical clarity.
- Precision Grinding:Provides a matte finish with high dimensional consistency for mechanical assemblies.
- Lapped Finish:Ensures superior flatness for vacuum chucks and substrate mounting applications.
- Fire Polishing:Smooths edges and surfaces to increase structural strength and handling safety.
Custom Manufacturing Capability
We provide advanced fabrication based on your technical drawings or physical samples:
- Precision CNC Machining:Complex geometry shaping, stepped structures, and interlocking grooves.
- Drilling & Slotting:Laser-cut or CNC-drilled holes with minimal edge chipping and high positional accuracy.
- Edge Profiling:Beveled, chamfered, or radius edges for seamless equipment integration.
- Dimension Range:Supporting sizes from micro-disks (2mm) to large-scale plates (1000mm+).
How to Choose the Right Quartz Plate
- Operating Temperature:Select high-purity fused silica for continuous operation above 1100°C.
- Optical Spectrum:Choose JGS1 for Deep UV, JGS2 for Visible, or JGS3 for Infrared applications.
- Surface Flatness:For semiconductor substrates, specify 1/4 Lambda or higher flatness requirements.
- Chemical Environment:Ensure compatibility with process reagents (highly resistant to most acids, excluding HF).
Technical Specifications
| Property / Feature | Specification |
| Material | High-purity fused quartz (SiO2 >= 99.99%) |
| Operating Temp | 1100°C (Continuous) / 1250°C (Short-term) |
| Surface Quality | 20/10, 40/20, 60/40 (Scratch/Dig) |
| Flatness | 1/4 Lambda – 1/2 Lambda per inch (Grade dependent) |
| Thickness Range | 0.5 mm – 100 mm (Fully Customizable) |
| Tolerances | +/- 0.1 mm (Standard) / +/- 0.01 mm (High Precision) |
Quality Control
- Purity Control:Raw material verification ensuring SiO2 content >= 99.99%.
- Dimensional Accuracy:Rigorous inspection of thickness, flatness, and parallelism using precision metrology.
- Surface Integrity:Detailed Scratch/Dig assessment according to international optical standards.
- Stress Relief:All plates are properly annealed to ensure long-term stability and durability.
Packaging & Delivery
- Individual Protection:Each plate is individually wrapped with non-abrasive protective materials to prevent surface scratches.
- Export-Grade Packing:Heavy-duty, shock-absorbent crating (wooden or specialized boxes) is used for secure international air or sea freight.
- Delivery Lead Time:Schedules are optimized based on order volume and custom machining complexity.
FAQ – Quartz Plate
Q: Can quartz plates be used at high temperatures? Yes. Fused quartz plates are ideal for high-temperature applications due to their exceptional thermal stability and extremely low thermal expansion.
Q: Do you support drilled or slotted quartz plates? Absolutely. We provide precision CNC machining for holes, slots, or stepped structures based on your technical drawings.
Q: How do I select the right optical grade? It depends on your wavelength requirements: JGS1 is the best choice for UV transparency, while JGS3 is optimized for IR applications.
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