The large-diameter thick wall heating furnace quartz sleeve is a core high-temperature resistant component designed specifically for extreme high temperature and precision thermal field environments. It is made of high-purity (SiO ₂ ≥ 99.99%) quartz raw material through secondary molding expansion and precision cold processing technology. It has excellent anti crystallization ability and thermal stability, and can maintain structural integrity at high temperatures of 1100 ℃ -1200 ℃ for a long time. It is an indispensable high-end customized consumable in the fields of advanced material research and development, new energy, high-end lighting, and special industries.

This product is mainly aimed at customers who have strict requirements for thermal field uniformity, material purity, and dimensional accuracy. The core solution is to address the following key needs and challenges:

Solving the problem of uneven heat field in large sizes: By designing a super large diameter and optimized wall thickness, the temperature distribution inside the furnace is ensured to be highly uniform, meeting the heating needs of batch heat treatment or large workpieces.

Overcoming the challenge of high-temperature structural deformation: The thick walled structure combined with a high rigidity formula effectively resists softening deformation and stress cracking at high temperatures, greatly extending the service life in continuous production environments.

Eliminate high-temperature process pollution: The ultra-high purity material characteristics ensure zero metal ion precipitation in sensitive processes such as high-end material sintering, ensuring the purity of experimental samples and industrial products.

Meet non-standard customized assembly needs: For special equipment interfaces, we provide deep customization services such as flange connections, side arm openings, and irregular sealing to solve assembly problems that standard products cannot adapt to.

Advantages and Application Value

As a professional quartz product manufacturer, Luweiya Quartz's large-diameter thick walled quartz sleeves have significant advantages in performance and engineering applications, which can bring substantial production value to users:

Excellent high temperature resistance and thermal shock resistance: The softening point of the product is as high as 1730 ℃, and the long-term use temperature can reach 1200 ℃. Thanks to its extremely low coefficient of thermal expansion (5.5 × 10 ⁻⁷/℃), the casing can withstand severe rapid cooling and heating changes without bursting, greatly reducing the frequency of downtime maintenance caused by thermal shock.

Ultimate dimensional accuracy and thermal field optimization: We support wide range customization with diameters ranging from 10mm to 3500mm and wall thicknesses up to 30mm. By precise wall thickness control (tolerance can be controlled within ± 0.05mm to ± 0.1mm), the thermal response speed and mechanical strength are effectively balanced, ensuring that the radial temperature uniformity deviation can be controlled within ± 3 ℃ in high temperature environments above 1050 ℃.

High purity ensures process cleanliness: The raw materials undergo strict screening and ICP-MS detection, and the total amount of metal impurities is controlled at an extremely low level. In high-end material sintering and high-purity chemical experiments, it can effectively avoid cross contamination of samples in high-temperature environments.

Excellent infrared transmittance and energy-saving characteristics: Quartz material has extremely high transmittance for infrared radiation, allowing thermal energy to directly penetrate the tube wall to heat the internal sample. Not only is the heating efficiency high, but it can also be combined with an external insulation layer to significantly reduce the overall power consumption of the equipment.

Customer application case sharing

Case 1: A European photovoltaic equipment manufacturer (application of polycrystalline silicon ingot furnace)

Challenge faced: When producing large-sized polycrystalline silicon ingots, the original quartz lining tube had insufficient anti crystallization performance at high temperatures, resulting in a short service life, and the uneven thermal field caused by the large diameter affected the yield of silicon ingots.

Solution: We have customized a large-diameter thick walled quartz casing with an outer diameter of 1200mm and a length of 3000mm for it. By optimizing the quartz formula to enhance high-temperature rigidity, and adopting a secondary molding process to ensure a wall thickness uniformity of over 95%.

Application achievements: The new product has successfully increased the production of silicon ingots by 8%, and the deformation resistance of the casing in high temperature environments has been significantly enhanced, greatly reducing the frequency of consumables replacement on the production line.

Case 2: A leading special glass manufacturing enterprise (high-end glass melting and observation window application)

Challenge: The company needs an observation and transportation system that can withstand high temperatures above 1100 ℃ and resist strong alkaline glass liquid erosion when melting special optical glass, and has extremely high requirements for the sealing of assembly interfaces.

Solution: Provide a high-purity thick walled quartz tube with a diameter of 800mm as an observation channel for molten metal and glass liquid. Use a high-precision cold processing center for deep processing, strictly control the roundness deformation under high temperature conditions within 0.8%, and attach a complete third-party quality inspection report.

Application results: The yield rate of the customer's production line has increased by 3%, and the service life of this batch of quartz tubes has reached three times that of the original ceramic tube products, achieving stable replacement of key consumables.

Case 3: State Key Laboratory of a university (research and development of advanced carbon materials)

Challenge: When conducting sintering of new carbon fiber precursors in the laboratory, a customized quartz reactor that can withstand high temperatures of 1100 ℃ and cooperate with complex atmosphere control systems is required, with extremely high sealing requirements for assembly interfaces.

Solution: Stress points were predicted through 3D modeling, and a thick walled quartz sleeve with a special flange interface and lateral intake tube was customized for it. A water-cooled sealing flange system solution was also provided to ensure absolute safety in vacuum and atmospheric environments.

Application achievements: The success rate of assembly after product delivery has reached 100%, helping the research team reduce the risk of experimental errors by 50% and significantly accelerating the development progress of new materials.

Whether you are facing the problem of uniformity in high-temperature thermal fields or have non-standard customization requirements for special sizes and interfaces, we can provide you with a one-stop quartz product solution from design optimization, precision machining to finished product delivery. Welcome to contact us anytime for product specifications and pricing solutions!

Luverre Quartz is a manufacturer specializing in quartz tubes and other quartz items.We have over 18 years experience with the production of quartz tubes, we will be your reliable partner on quartz tubes and other quartz items.

Luverre Quartz can manufacture customized quartz tubes in various shapes, such as spiral, square, round, with processing including cutting, bending, welding, etc., and available in different colors, such as transparent quartz tubes, opaque quartz tubes, milky white quartz tubes, red quartz tubes, and so on.