Featured Custom OEM Quartz Discs & Plates
Direct-from-factory optical substrates, ultra-flat discs, and CNC-machined fused silica components fabricated under DIN ISO 10110 standards.
Precision Engineering Architecture: The Material Science of OEM Quartz Discs
In advanced precision manufacturing, industrial optics, and semiconductor wafer fabrication, the selection of quartz discs (circular quartz plates and viewports) directly governs transmission yield, thermal distortion limits, and laser-induced damage thresholds (LIDT). As a dedicated custom OEM quartz disc factory and global exporter based in Donghai—the historic quartz epicenter of China—VEZLO Quartz operates at the intersection of raw material refining, thermodynamic electric arc fusion, and nanometer-scale deterministic polishing.
Spectroscopic Classification of Optical Quartz Discs
Selecting the appropriate quartz grade is the paramount procurement parameter for mission-critical instrumentation. VEZLO systematically fabricates discs across three standard optical categories:
JGS1 (Far UV Grade Synthetic Silica)
Synthesized synthetically via SiCl₄ flame hydrolysis. Features zero absorption bands in the 185 nm–2500 nm range. Free of bubbles, micro-striations, or metallic color centers. The gold standard for excimer laser optical windows, photomask substrates, and analytical spectrophotometer cells.
JGS2 (Standard Optical Fused Quartz)
Manufactured from high-purity natural Donghai quartz sands under refined hydrogen-oxygen flames. Exhibits premium transmittance from 220 nm to 2500 nm with a characteristic OH- absorption dip near 2.73 μm. Ideal for industrial sight glasses, vacuum viewports, and UV curing lamps.
JGS3 (Infrared Grade Optical Quartz)
Electrically vacuum-melted from purified natural crystalline silica under an anhydrous, moisture-free atmosphere. Eliminates OH- bond vibration bands, pushing infrared optical transmission up to 3.5 μm. Designed for IR laser systems, thermal imaging viewports, and high-temperature Pyrometry.
Mechanical, Thermal & Optical Performance Matrix
Below are the verified engineering baseline specifications maintained across our ISO-certified production lines for OEM custom quartz discs:
| Physical / Chemical Property | Test Standard / Condition | Fused Quartz (Natural) | Synthetic Fused Silica (JGS1) |
|---|---|---|---|
| Purity (SiO₂ Concentration) | ICP-OES / GD-MS Spectrometry | ≥ 99.99% | ≥ 99.9999% |
| Density (ρ) | ASTM C693 / 20°C | 2.201 g/cm³ | 2.203 g/cm³ |
| Coefficient of Thermal Expansion (CTE) | 20°C to 320°C (Dilatometry) | 5.5 × 10⁻⁷ /°C | 5.2 × 10⁻⁷ /°C |
| Continuous Operating Temperature | Atmospheric furnace | 1,100 °C | 1,150 °C |
| Short-term Transformation Strain Point | Thermal annealing bench | 1,075 °C | 1,020 °C |
| Refractive Index (n_d) | 587.6 nm / 20°C (Helium d-line) | 1.4585 | 1.4584 |
| Transmitted Wavefront Distortion (TWD) | Zygo Verifire Interferometer | λ/4 per 25mm | λ/10 to λ/20 |
| Surface Quality (Scratch-Dig) | MIL-PRF-13830B / DIN 3140 | 40/20 | 20/10 to 10/5 |
| Total Metallic Impurities | Fe, Ti, Al, Cu, Ni, Ca, Na, K, Li | ≤ 20 ppm | ≤ 0.5 ppm |
Why Tier-1 Global Contractors Partner with VEZLO
Combining raw sand purification, heavy capital manufacturing, and government-backed R&D inside China's Quartz Capital.
Direct Sourcing in Donghai's Quartz Hub
Headquartered across 50 mu (approx. 33,000 m²) in Donghai County with RMB 10 million in fixed assets. We control raw silica refining, maintaining 13 dedicated grades of sand with metallic impurities constrained strictly below 20 ppm, ensuring unyielding thermal and structural uniformity from ingot to disc.
Provincial Science & Technology Laureate
Entrusted with the Jiangsu Provincial Science & Technology Support Project for 320 mm high-purity quartz furnace tubes. Our newly industrialized 520 mm large-diameter high-purity quartz tubes have completed preliminary review for National New Products, channeling an annual R&D investment exceeding RMB 5 million into high-precision CNC wafer disc machining.
Onsite-Verified & Rapid Export Response
Independently verified onsite by Alibaba.com and third-party credit audit authorities. Backed by Trade Assurance, maintaining a 50% repeat order rate from buyers across North America, Germany, Japan, and the UK. With bilingual optical engineers providing actionable CAD reviews and pricing quotes within 2 hours.
Procurement & Technological Roadmap: Quartz Discs in Advanced Industry (2025–2030)
As semiconductor architectures transition past sub-2nm nodes, wafer-level packaging adopts glass core substrates, and ultra-short pulse (femtosecond) industrial lasers proliferate, the global procurement landscape for custom quartz discs is undergoing foundational technological transformations. Sourcing directors must anticipate three macro shifts:
1. Ultra-Low Subsurface Damage (SSD) CMP Polishing
Standard mechanical diamond grinding creates microscopic lattice fracture lines that compromise high-energy laser damage resistance. The procurement trend is shifting toward Chemico-Mechanical Planarization (CMP) combined with atmospheric plasma polishing, delivering sub-angstrom surface finishes ($Ra < 0.2\text{ nm}$) without micro-crack initiation points.
2. Glass Core Substrates & TGV Micro-Drilling
Advanced multi-die packaging is migrating away from organic substrates toward thin fused quartz discs with laser-induced Through-Glass Vias (TGV). Demands now center around hole aspect ratios of >10:1 with zero sidewall chipping, allowing high-frequency signal propagation with ultra-low dielectric dissipation.
3. Fluorine-Doped Deep-UV Transmittance Retention
In EUV and 193nm immersion photolithography, solarization resistance is vital. The industry requires specialized synthetic quartz discs doped with trace amounts of Fluorine to suppress E' defect formation under relentless multi-kilowatt UV photon exposure, extending component service life from months to years.
4. Geopolitical Supply Chain Traceability
Semiconductor and aerospace OEM buyers increasingly demand full elemental assay traceability back to raw mineral sources. VEZLO's vertically integrated supply chain in Donghai bypasses intermediaries, providing verified purity assays (GD-MS analysis) and guaranteed batch consistency across multi-year purchase orders.
Frequently Asked Technical Questions
Engineered responses addressing tolerance stack-up, thermal shocks, metrology, and global packing protocols.
For outer diameters (OD) between 5 mm and 600 mm, our 5-axis CNC diamond ultrasonic grinders maintain standard tolerances of ±0.05 mm, with tight tolerance capabilities reaching ±0.01 mm upon request. Thickness tolerances are held to ±0.02 mm, with parallelism under 10 arcseconds and wedge angles constrained to <3 arcminutes. Custom step bevels, C-shaped edges, chamfers, and through-holes are milled directly to CAD drawing specifications.
Every precision optical disc batch undergoes non-contact laser interferometry utilizing Zygo Verifire GPI 632.8 nm systems. Standard double-sided polished (DSP) discs offer λ/4 flatness per 25 mm diameter, while high-tier laser flats achieve λ/10 to λ/20 across 90% clear aperture. Quantitative interferometric test reports (including PV, RMS, and Power/Irregularity maps) are archived and shipped alongside every certified crate.
Yes. Thanks to fused silica's near-zero coefficient of thermal expansion (CTE = 5.5 × 10⁻⁷ /°C), a 3 mm to 10 mm thick transparent quartz disc can be heated to 1,100°C in an atmospheric muffle furnace and quenched instantly into 20°C ambient water without fracture or micro-cleaving. Discs also retain dimensional integrity down to liquid helium cryogenic temperatures (-269°C), making them exceptional viewports for aerospace space simulation and quantum chambers.
Cleanliness and surface protection are non-negotiable. Finished optical discs undergo Class 1,000 cleanroom ultrasonic solvent cleaning, followed by individual encapsulation in static-dissipative dust-free vacuum bags or membrane boxes. Components are cushioned with high-density closed-cell pearl EPE foam within reinforced shock-absorbing cartons, which are then secured inside ISPM-15 compliant fumigation-free plywood export crates rated for air, marine, and DHL/FedEx priority global logistics.
Accelerate Your Production Run with Factory-Direct Quartz Engineering
Connect directly with our Donghai technical manufacturing team. Submit your CAD drawings (DWG, DXF, STEP) or physical sample specifications. Receive immediate DFM feedback, precision optical tolerance verification, and an itemized export quote within 2 hours.
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