7-6cm high-purity transparent quartz plate

7-6cm high-purity transparent quartz plate is a customized optical component made of high-end quartz material with a purity of ≥ 99.99% silicon dioxide through precision cutting, grinding, and polishing. This size specification perfectly meets the standard window requirements of laboratory instruments, semiconductor equipment, and optical systems. The visible light transmittance of the product exceeds 93%, and it has the characteristics of high temperature resistance (long-term use at 1100 ℃), excellent thermal stability (can withstand sudden temperature changes at 1100 ℃), and corrosion resistance (acid resistance is 150 times that of stainless steel). It is an ideal choice for highly stable optical systems in harsh environments.

Why choose 7-6cm high-purity transparent quartz plate?

Q: In which scenarios can this quartz crystal mainly solve my application problems?

A: If you are facing problems such as high temperature observation window explosion, short window life under chemical corrosion environment, or signal interference caused by insufficient material purity in optical detection, this 7-6cm high-purity transparent quartz plate is an ideal solution. It is particularly suitable for observation windows of semiconductor equipment, observation windows of high-temperature furnaces, laboratory spectral analysis windows, and laser output mirrors.

Q: What are the special advantages of the size specification of 7-6cm?

A: 7-6cm (i.e. 70mm to 60mm) is the standard window size for industrial equipment and laboratory instruments, perfectly compatible with most imported and domestic IoT detection equipment, reactor observation ports, and optical instrument interfaces. We provide precise diameter control with a tolerance of up to ± 0.03mm, eliminating the need for secondary processing and ready to use out of the box.

Q: What level of polishing technology can you achieve? Can it be used for precision optical systems?

A: Of course you can. We use double-sided polishing technology, with a surface roughness of less than 5 Å (sub nanometer level), a surface quality of up to 60/40 (US military standard), and a flatness of up to λ/4, fully meeting the requirements of precision optical systems from deep ultraviolet to infrared.

Core advantages of the product:

Ultimate purity and spectral transmittance

Our 7-6cm quartz plates are made of high-purity silicon dioxide (SiO ₂ content ≥ 99.99%) as raw material, and have excellent transparency throughout the entire spectral range from ultraviolet to infrared:

-Visible light transmittance: up to 93% or more

-UV spectral region: maximum transmittance can reach over 80%

-Low impurity content: The total amount of metal impurities is controlled at an extremely low level to avoid absorption bands caused by transition metal ions

Excellent physical and chemical properties

-High temperature resistance: The softening point temperature is about 1730 ℃, and it can be used for a long time at 1100 ℃. The maximum temperature for short-term use can reach 1450 ℃

-Thermal stability: The coefficient of thermal expansion is extremely small (about 0.55 × 10 ⁻⁶/℃), and it can withstand drastic temperature changes - it will not explode when heated to 1100 ℃ and put into normal temperature water

-Corrosion resistance: Except for hydrofluoric acid, it hardly reacts with other acidic substances, and its acid resistance is 30 times that of ceramics and 150 times that of stainless steel

-Mechanical strength: Mohs hardness level 7, surface wear-resistant and not easily scratched

Flexible customized services

For the 7-6cm size, we offer a full range of customization options:

-Diameter range: can be precisely controlled between 60.0mm and 70.0mm, supporting customized non-standard sizes

-Thickness range: can be processed from 0.5mm ultra-thin sheet to 50mm thick wall window

-Precision machining capability:

-Edge treatment: chamfering, grinding, eliminating stress concentration points

-Hole processing: supports irregular machining such as drilling and slotting

-Heat treatment: Annealing and dehydroxylation processes to remove processing stress and improve optical uniformity

-Coating service: Anti reflective film, filter film, etc. can be coated according to demand

Customer Application Cases

Case 1: Upgrading the observation window of semiconductor etching equipment

-Customer requirement: A semiconductor equipment manufacturer needs to provide observation windows for etching chambers, requiring materials that are resistant to chlorine gas corrosion, high temperature, and have stable light transmittance. The window size is exactly 65mm (between 7-6cm). The customer's original ordinary quartz window experienced fogging, affecting process monitoring.

-Our solution: We provide customized high-purity transparent quartz sheets with a diameter of 65mm and a thickness of 5mm. We use double-sided polishing technology and strict annealing treatment to eliminate internal stress, ensuring that they do not deform in high-temperature vacuum environments.

-Final effect: After replacement, the customer's device continued to operate for 6 months, with clear and transparent windows, no corrosion marks, and a light transmittance of over 98% of the initial value. This batch of products has passed customer verification and entered the bulk procurement stage.

Case 2: Customization of Spectral Analysis Window in University Laboratory

-Customer requirement: The School of Materials Science and Technology at a certain university requires a reaction cell window for high-temperature in-situ spectroscopic analysis. The material is required to have no absorption peaks in the wide wavelength range of 200nm-2500nm and be able to withstand repeated heating at 800 ℃. The window diameter requirement is 70mm.

-Our solution: Choose JGS1 grade far ultraviolet optical quartz glass and customize thin sheets with a diameter of 70mm and a thickness of 2mm. Strictly control the hydroxyl content to ensure interference free absorption in the near-infrared region.

-Final effect: Experimental data shows that the window exhibits excellent performance in the deep ultraviolet region (starting from 185nm), with no fluorescence interference and a 25% increase in signal-to-noise ratio. The feedback from the research group teacher: "The material has extremely high purity and perfect data repeatability

Case 3: Laser Processing Equipment Protection Window

-Customer requirement: A laser equipment company needs to configure a protective window for high-power lasers, requiring materials to withstand the high temperature impact of splashing slag and not cause equipment shutdown due to thermal explosion. The standard size of the window is 60mm.

-Our solution: We provide high-purity quartz plates with a diameter of 60mm and a thickness of 3mm, utilizing the extremely low thermal expansion coefficient of quartz material to ensure overall dimensional stability under local high-temperature impacts.

-Final effect: The service life of this window on a 2000W fiber laser cutting machine is more than 10 times longer than that of a regular glass window, significantly reducing the maintenance frequency and cost for customers.

Whether used for semiconductor cavity observation, high-temperature furnace monitoring, precision spectral analysis, or laser system protection, the 7-6cm high-purity transparent quartz plate can become your most reliable optical window choice with ultimate purity, excellent stability, and precise size.

We support customized drawings and sample testing. Please feel free to send us your specific specifications (diameter, thickness, tolerance, surface quality), and our engineers will provide you with a professional customized quotation within 24 hours. Contact now to start your precision optics project!

Luverre Quartz manufactures and sells a wide range of high quality fused quartz glass, including fused quartz tubes, fused quartz plates, fused quartz rods, fused quartz windows, fused quartz crucibles, fused quartz boats, fused quartz flanges, fused quartz beakers, fused quartz glass instruments, and more. We can meet all kinds of customized requirements for fused quartz glass products.

For more information, please feel free to contact us.

Why choose us?

1.We are more experienced.

We have over 19 years production experience of quartz items.

2.We are more efficient.

We reply customers’ requests within 24 hours and we have high efficient production, engineers and sales team.

3.Our quality is more guaranteed.

We control the quality from quartz lumps to quartz sand and then quartz products, we have better and stricter quality control than other manufactures.

4.We are able to produce more difficult quartz products.

We have large grinding platforms and precision etching machines which enable us to manufactures and sells a wide range of high quality quartz glass, including quartz tubes, quartz plates, quartz rods, quartz windows, quartz crucibles, quartz boats, quartz flanges, quartz beakers, quartz glass instruments, and more.

5. About 20 years of professional experience

-Focusing on the manufacturing of quartz products for a quarter century

-The average working experience of the technical team exceeds 15 years

6.Global Service Network

-Our products are exported to over 40 countries and regions including Europe, America, Japan, South Korea, and the Middle East

-Multi language technical support (English, German, French, Spanish, Russian, Japanese)

7. Flexible cooperation mode

Support small batch trial orders, medium - and long-term cooperation, and urgent production for urgent orders, providing OEM/ODM services.