Frequently Asked Questions About TOQUARTZ
Get answers to common questions about TOQUARTZ services and technical details of our quartz glass products.
General Questions
Q: Do you enforce a minimum order quantity (MOQ)?
A: No. TOQUARTZ offers NO MOQ prototyping and scalable production. Validate designs with single-unit orders before committing to bulk batches.
Q: How do you handle design complexity for quartz flanges/reactors?
A: Our engineers use multi-axis milling systems and conduct real-time thermal/mechanical simulations to preempt stress points, ensuring airtight seals even for non-standard geometries.
Q: Are your quartz components compliant with ISO/ASTM standards?
A: TOQUARTZ complies with ASTM C1468M (thermal shock resistance), ISO 9001:2015 (QC processes), and RoHS/REACH for EU markets. Certificates are provided upon request.
Q: How is optical-grade surface quality (e.g., ≤5nm Ra) ensured?
A: Laser-assisted edge finishing and AFM roughness validation are applied to optics like cuvettes and rods. Custom polishing protocols match ISO 10110 standards.
Q: How quickly can you deliver custom quartz prototypes?
A: Prototypes ship in 5–7 days post-design approval. Our rapid CNC grinding systems + iterative adjustments ensure accuracy (±0.01mm) without delays.
Questions for Quartz Glass Material
Q: What is quartz glass made of?
A: High-purity silica (≥99.99% SiO₂) synthesized structurally.
Q: What is the melting point of quartz glass?
A: ~1700°C melting point, stable below 1200°C continuously.
Q: What is the thermal conductivity of quartz glass?
A: Thermal conductivity: 1.3–1.5 W/m·K (ambient temperature range).
Q: Quartz glass vs borosilicate
A: Superior thermal stability (0.55 vs. 3×10⁻⁶/°C) and acid resistance over borosilicate.
Q: Quartz glass vs pyrex?
A: Lower thermal expansion, higher temperature resistance than Pyrex.
Questions for Quartz Glass Tube
Q: What is a fused quartz tube?
A: A fused quartz tube is a high-purity glass product made by melting SiO₂ ≥99.98% at ~2000°C, featuring exceptional thermal stability, UV transparency, and chemical inertness.
Q: What is the strength of fused quartz tube?
A: Typical tensile strength: 50 MPa;
Thermal shock resistance: withstands 1100°C to 20°C rapid cooling cycles without cracking.
Q: How much pressure can quartz tube withstand?
A: Standard quartz tubing tolerates ≤1.5 MPa internal pressure; custom reinforcements can achieve ≤3 MPa for industrial applications.
Q: What is the wavelength of quartz tube?
A: Optical-grade fused quartz tubes transmit 170-2500nm wavelengths, with >90% UV transmittance at 185nm (low OH content).
Q: Does quartz tubing heat transfer?
A: No – fused quartz has low thermal conductivity (1.4 W/m·K), making it ideal for high-temperature insulation and thermal shock resistance.
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