Large diameter polished quartz plates are high-quality optical components made from high-purity natural crystals or synthetic quartz through precision cutting, grinding, and double-sided polishing processes. It has extremely high transmittance and excellent thermal stability, which can perfectly meet the strict requirements of ultra large size, high flatness, and ultra smooth surface in the semiconductor, photovoltaic, and high-end optical fields. It is a key core consumable to ensure the stable operation of precision equipment.

FAQ

Q: What diameter quartz plates can you provide for customization?

A: As a professional source manufacturer, we have strong capabilities in large-scale processing. Normally, we can provide quartz plates with diameters ranging from 300mm to 600mm. For special needs, we can customize ultra large quartz plates with a maximum diameter of 800mm or even larger, and the thickness tolerance can be controlled within ± 0.05mm.

Q: What standards can be achieved for the surface smoothness and flatness of large-diameter quartz plates?

A: We use advanced double-sided polishing technology, with a surface finish of up to 10/5 or even higher (according to MIL-PRF-13830B standard), and a flatness (TTV) that can be controlled within 3 μ m to ensure no distortion occurs in high-precision optical testing.

Q: What high-temperature or corrosive environments are your products suitable for?

A: Our quartz plates have a purity of over 99% and a softening point of about 1732 ℃. They can work stably in an environment of 1100 ℃ for a long time and have strong corrosion resistance to most acids (except hydrofluoric acid), making them very suitable for extreme working conditions.

Requirements and Problem Solving

For those who are looking for high-quality quartz materials, a larger diameter often means higher processing difficulty and risk of damage. Our product addresses this challenge by solving core problems such as deformation of large-sized materials, difficulty in meeting surface flatness standards, and uneven optical transmittance. Whether it's observation windows for large diffusion furnaces or insulation panels for photovoltaic single crystal furnaces, we can provide structurally stable and transparent solutions to help you improve the yield and operational stability of your terminal equipment.

Advantages and Application Value

We are well aware of the differentiated needs of different industries for quartz products, and therefore committed to providing comprehensive and high-precision customized services:

1. Ultimate customization of dimensions and positional tolerances

Diameter range: Supports width customization from Φ 100mm to Φ 800mm+.

Thickness control: Precision machining is available for thicknesses as thin as 1mm and as thick as 50mm, with strict control over thickness tolerances.

Shape processing: In addition to standard circles, it supports square, rectangular, perforated, slotted, chamfered and other irregular cutting processing.

2. Excellent optical and surface performance

High transmittance: Visible light transmittance>93%, excellent transmittance performance in ultraviolet and infrared bands.

Ultra smooth surface: Through multi-stage polishing process, surface scratches and pitting are effectively eliminated, light scattering is reduced, and laser optics and precision detection requirements are met.

3. Wide range of application scenarios adaptation

Semiconductor industry: used for diffusion furnace nozzle sealing plates, cleaning tank windows, and photolithography optical platform substrates.

Photovoltaic new energy: observation windows and insulation cover plates for single crystal/polycrystalline furnaces, high temperature resistance and thermal shock resistance.

Optical instruments: large telescope lens substrate, laser reflector, interferometer standard plate.

Research and Military Industry: High temperature and high pressure resistant windows, special optical filter substrates.

Customer application case sharing

Case 1: A semiconductor equipment manufacturer (anonymous)

Challenge: The customer urgently needs a large diameter quartz observation window with a diameter of 450mm and a thickness of 15mm when developing a new generation of 12 inch plate diffusion furnace. The previous supplier's product had insufficient flatness, resulting in slight warping of the window in high-temperature environments, which seriously affected the temperature uniformity monitoring of the internal plates.

Solution: After our technical team intervened, we selected low hydroxyl synthetic quartz raw materials and used stress relief annealing process combined with high-precision double-sided grinding. The final delivered product has a flatness controlled within 2 μ m and maintains excellent structural stability during high-temperature testing at 1200 ℃.

Result: According to customer testing feedback, after replacing our quartz window, the uniformity of the temperature field inside the furnace increased by 15%, and the equipment failure rate was significantly reduced.

Case 2: A European purchaser of photovoltaic monocrystalline furnace accessories

Challenge: The customer needs to purchase in bulk the top observation cover plate for the 160 type single crystal furnace, which requires extremely high heat shock resistance and no surface defects to avoid affecting the observation clarity of silicon liquid crystallization inside the furnace.

Solution: We have customized high-purity transparent quartz plates with a diameter of 380mm, achieving a surface finish of 20/10 standard, and have carried out special acid washing treatment to remove surface impurities.

Result: The product has been running continuously at the customer's site for 6 months without any explosion or crystallization, with consistent clarity of light transmission, helping customers significantly reduce the frequency of consumable replacement and maintenance costs.

Why choose us?

Because we are a source factory that truly understands technology and has production capacity. We not only have advanced large-scale CNC cutting and polishing equipment, but also have profound experience in the application of quartz materials. From drawing design, raw material selection to precision machining, quality inspection and packaging, we provide one-stop customized services to ensure that every large-diameter quartz piece can perfectly meet your equipment needs.

If you are looking for high-quality large-diameter polished quartz plates or have any special specification customization needs, please feel free to contact us at any time for detailed quotations and technical solutions!

Luverre Quartz is a manufacturer focusing on producing various quartz plates, we can produce customized quartz plates in different sizes and shapes, such as square, round, oval and other special shaped designs according to customer's requirements. The processing includes cutting, bending, welding, etc., and there are different colors available, such as transparent quartz plates, opaque quartz plates, milky quartz plates and so on.