Quartz Tube
Quartz Plate
Quartz Rod
Optical Applications
Semiconductor Industry
Laboratory and Chemical Applications
Quartz press bars are a critical component widely used in the manufacturing and repair of electronic devices, particularly in hot press equipment and within the LCD industry.
Quartz press bars can be custom-manufactured to meet specific customer requirements, including various shapes (such as L-shaped, T-shaped, square bars, double-stepped, etc.), dimensions, and precision levels. Professional manufacturers possess advanced processing equipment and extensive manufacturing experience, enabling them to provide customers with high-quality, high-precision quartz press bar products.
| Property Content | Property Values |
|---|---|
| SiO2 | 99.99% |
| Density | 2.2×10³ kg/cm³ |
| Hardness | 5.5 - 6.5 Mohs' Scale 570 KHN 100 |
| Tensile Strength | 4.8×10⁷ Pa (N/mm2) (7000 psi) |
| Compression Strength | >1.1×10⁹ Pa (160,000 psi) |
| Coefficient of Thermal Expansion | 5.5×10⁻⁷ cm/cm·°C (20°C-320°C) |
| Thermal Conductivity | 1.4 W/m·°C |
| Specific Heat | 670 J/kg·°C |
| Softening Point | 1730°C (3146°F) |
| Annealing Point | 1210°C (2210°F) |
| Strain Point | 1120°C (2048°F) |
| Work Temperature | 1200°C (2192°F) |
| Electrical Resistivity | 7×10⁷ ohm cm (350°C) |
| Size | Customized |
| Logo | Customized Logo Accept |
High Light Transmittance
Quartz press bars exhibit extremely high light transmittance, typically reaching 99% or greater, ensuring efficient light transmission during pressing processes.
Excellent Flatness
Their surface flatness is exceptionally high, often achieving ±0.002mm, which facilitates high-precision pressing operations.
High-Temperature and Chemical Resistance
The quartz material demonstrates outstanding resistance to high temperatures and chemical substances, maintaining stability even in harsh working environments.
High Hardness
Quartz has a high hardness, providing the press bars with good wear resistance and scratch resistance during use.
Application Scenario
Quartz press bars are widely applicable in various hot press equipment, such as COG Bonders, OLB Bonders, FPC Bonders, PCB Bonders, and pressing equipment used for repair purposes.
In the LCD industry, they are also extensively used in screen repair and production processes to improve product manufacturing efficiency and yield rates.
Handle with Care
Quartz glass products are valuable materials and must be handled with care to avoid collisions and drops.
Temperature Limits
All types of quartz glass have a maximum operating temperature. This temperature should not be exceeded, as it may result in devitrification or softening and deformation.
Cleaning Procedures
Quartz glass products intended for high-temperature use must be thoroughly cleaned before use. This can be accomplished by soaking in a suitable cleaning solution, followed by rinsing with high-purity water or treatment with alcohol.
Avoid Thermal Shock
Although quartz glass has good thermal stability, variations in residual stress and product shape can result in varying levels of thermal shock resistance. These differences should be taken into consideration during use.
Prevent Contact with Alkaline Substances
As an acidic material, quartz glass should be kept away from alkaline substances (such as water glass, asbestos, and compounds of potassium and sodium), particularly at high temperatures, as contact will significantly reduce its crystallization resistance.
Frequently asked questions
Quartz glass is a hard and brittle material with excellent physical and chemical properties, extremely high mechanical hardness, good electrical insulation, high temperature and corrosion resistance, low and stable delay performance, good light transmittance, etc. It is widely used in semiconductors, optics, electricity, chemistry, aerospace, automobiles and other fields. Hard and brittle materials are difficult to process, and many fields urgently need cutting processes with small edge collapse, less material loss, low cross-section roughness, and a wide cutting thickness range. The traditional cutting method of quartz glass is mechanical cutting, that is, wheel cutting. Non-traditional cutting methods include water jet cutting, electrochemical discharge wire cutting, continuous laser cutting, etc. Mechanical cutting has low cost, but the contact between the wheel and the material causes large tool wear, and the material is easily contaminated by the tool. Quartz glass is prone to edge collapse, microcracks, and residual stress, which affects the strength and performance of the material! It is difficult to achieve curve cutting and requires post-processing, such as grinding and polishing. Laser cutting does not directly contact the material, has no contact stress, and can perform complex curve cutting. Picosecond laser has the advantages of small spot diameter, high precision, short action time with the material, and small action area, and is suitable for the processing of hard and brittle materials.
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