1100 °C Working Rating
Precision Engineered Inventory
Specialized Fused Quartz Components for Industrial Processing
Melting crucibles, precision rods, UV transmission substrates, and diffusion ware fabricated from ≥99.99% high-purity natural silica sand. Certified ISO 9001 compliance for high thermal shock tolerance up to 1450 °C.
Optical Polished Ra < 0.5nm
High Purity Optical Clear Fused Quartz Disc Circular Glass Window Substrate
AT/SC Cut Piezoelectric
Optically Polished Single-Crystal Quartz Wafers for Piezoelectric QCM Sensors
Semiconductor Grade
Raw Rough-Ground Fused-Quartz Blank Plates for Wafer Lapping
IR Heating & Chemical
99.99% Pure Clear Quartz Twin Tube Customized Bending Welding
Diffusion & Furnace Line
High Purity Clear Fused Quartz Glass Tube Flat Cut Unpolished Ends
Acid Evaporation Labware
Clear Fused-Quartz Petri Dishes for Cell Culture & Acid Evaporation
99.99%
Pure Silica (SiO₂) Concentration
1450 °C
Peak Intermittent Thermal Threshold
5.5 × 10⁻⁷
Thermal Expansion Coefficient (/°C)
≤ 1 Hour
Technical Feasibility Response Time
Technical Whitepaper
Fused Quartz Structural Integrity in Thermal Metallurgy
An engineering analysis of vitrified silica crucibles versus conventional refractory materials during vacuum induction and arc melting cycles.
Crystalline Purity & Contamination Immunity
Standard zirconia or alumina ceramics discharge trace cations under aggressive vacuum melts, inducing interstitial alloy defects. Our electro-fused silica crucibles ensure non-reactive melting interfaces for platinum, titanium, specialized aerospace alloys, and superalloys.
Thermal Shock Mitigation Dynamics
With an extremely low expansion rate (5.5 × 10⁻⁷/°C from 20 °C to 1000 °C), fused quartz withstands thermal quenching cycles from liquid melt temperatures directly into ambient fluid quenches without microscopic fracturing or thermal spalling.
Microwave and RF Induction Transparency
Kemzo quartz maintains exceptional dielectric properties across multi-gigahertz and radiofrequency bands. This empowers induction heating systems to couple energy entirely into the metallic charge without parasitic heating or premature crucible wall deterioration.
| Physical & Thermodynamic Property | Fused Silica (Kemzo Standard) | Borosilicate 3.3 | High Alumina (99.5% Al₂O₃) | Significance in Thermal Processing |
|---|---|---|---|---|
| Maximum Continuous Operating Temp | 1100 °C | 500 °C | 1600 °C | Permits induction fusion cycles far exceeding borosilicate limits. |
| Short-Term Thermal Spike Peak | 1450 °C | 550 °C | 1750 °C | Withstands momentary pouring and chemical flash points safely. |
| Coefficient of Thermal Expansion | 5.5 × 10⁻⁷ /°C | 33 × 10⁻⁷ /°C | 80 × 10⁻⁷ /°C | Virtually immune to thermal shattering upon rapid air or oil quenching. |
| Softening Point Geometry | 1683 °C | 820 °C | N/A (Melts > 2000°C) | Maintains mechanical wall rigidity across high-load molten phases. |
| Dielectric Loss Tangent (1 MHz) | < 0.0001 | 0.0035 | 0.0010 | Zero induction loss; maximizes RF power into the core metal charge. |
Tuzla Industrial Eco-Zone
Industrial Applications Across Tuzla & Marmara Region
Tuzla, Istanbul anchors Turkey's most sophisticated naval shipyards, metallurgical testing centers, and automotive Tier-1 supplier hubs. Our direct-export supply chain delivers critical fused quartz parts to key industrial zones.
Tuzla Naval Shipyards & Specialized Foundry Lines
Naval propulsion fabrication requires high-integrity casting of copper-nickel, aluminum bronzes, and titanium valves. Kemzo's thermal crucibles ensure zero silica reduction, eliminating trace oxygen absorption and slag entrapment in maritime castings.
BOSB & Tuzla Chemical Industrial Parks
Tuzla's Organized Industrial Zones (OSB) house high-end analytical testing and continuous acid reaction facilities. Our double-bore quartz twin tubes, cuvettes, and evaporation dishes offer inert resistance to boiling acids (excluding HF), maintaining spectral accuracy across rigorous tests.
Aviation, Drone & EV Electronics (SAHA Istanbul Belt)
Neighboring the Sabiha Gökçen aviation corridor, high-tech manufacturers require single-crystal quartz wafers and quartz diffusion furnace tubes for piezoelectric micro-sensors, aerospace frequency controllers, and power electronic sintering processes.
Factory Direct Authority
Donghai Kemzo Quartz: 11+ Years of Quartz Precision
Operating from Donghai County—the crystal capital recognized worldwide for pure silica reserves—Donghai Kemzo Quartz Products Co., Ltd. integrates raw material extraction, CNC glass lathe machining, optical polishing, and controlled thermal annealing.
Our quality management infrastructure is validated under ISO 9001 and certified as a Jiangsu High Technology Enterprise, guaranteeing that every export to Tuzla meets the tightest DIN, ASTM, and SEMI tolerances.
- 10+ Automated Continuous Production Lines for Crucibles, Tubes & Rods
- Full Custom OEM/ODM Capabilities directly from CAD/STEP files
- Engineered Export Crating: Vacuum-sealed, shock-isolated cushioning for maritime/air transit
- Incoterms Supported: CIF Istanbul Port, FOB Shanghai, DAP Tuzla OSB, DDU/DDP
Procurement Knowledge Base
Frequently Asked Questions by Industrial Buyers in Tuzla
Key technical, regulatory, and logistics clarifications for engineering directors and procurement leads in the Marmara industrial belt.
What specific molten metals are compatible with Kemzo fused quartz crucibles?
Fused silica crucibles provide exceptional stability when handling gold, silver, platinum, copper alloys, nickel, specialty bronzes, and cast iron alloys up to 1450 °C under vacuum or atmospheric induction heating. However, they are not recommended for pure aluminum or molten magnesium, which trigger reduction reactions at extended exposure times.
How are custom quartz components handled from technical drawings (CAD/STEP)?
Our in-house technical team operates multi-axis CNC glass machining and laser profiling centers. Buyers in Tuzla can transmit CAD, DWG, or STEP drawings to our engineering division. We evaluate structural radii, stress concentrations, and thermal expansion factors, returning a fully validated DFM (Design for Manufacturability) review within one hour.
What packaging protections are used to prevent transit breakage to Turkey?
Every piece is individually nested in precision-cut EVA foam, wrapped with electrostatic film, and packed in reinforced, fumigated marine-grade plywood crates equipped with tip-and-tell shock indicators. Our sustained damage rate on shipments to Istanbul (Ambarli and Haydarpasa ports) remains below 0.05%.
What are standard shipment lead times to Tuzla and Istanbul customs?
Stock tubes, rods, and standard crucibles ship within 48 to 72 hours. Custom-blown diffusion assemblies, ground joints, or multi-window cuvettes require 7 to 14 days of precision production. Transit options include Express Air Cargo (3–5 days to Istanbul Airport) or Ocean Freight (22–28 days to Ambarli/Marmara terminals).
Does Kemzo supply full metallurgical and chemical trace test reports?
Yes. Every batch comes with a Certificate of Analysis (COA) documenting SiO₂ purity (typically ≥ 99.99%) and trace impurity concentrations (Fe, Al, Ti, Ca, Mg, Cu) measured via ICP-MS spectrometry, ensuring semiconductor-grade traceability.