Introduction of quartz glass cold processing process
Quartz glass deep processing refers to the processing of quartz glass raw materials (tube, rod, sheet, block) into quartz devices needed by users, which is divided into two kinds of cold processing and hot processing in China.
Quartz glass deep processing refers to the processing of quartz glass raw materials (tube, rod, sheet, block) into quartz devices needed by users, which is divided into two kinds of cold processing and hot processing in China. Adding method. The following is a detailed description of cold processing using glass.
Cold processing mainly includes cutting, grinding and polishing.
1. Cutting: quartz tube or quartz sheet is mainly cut with diamond saw blades or diamond saw blades. Multi-cutting machine, wire cutting machine, mainly used for cutting quartz crucible and quartz block. Laser cutting machine, inner circle cutting machine, mainly used for cutting guide plate.
2. Grinding: flat grinding disc, single-axis, double-axis polishing machine, coarse grinding: Hcp in 10~20μm finish â–½ 2. plane milling machine, multi-functional milling machine, fine grinding: Hcp in 6.3μm finish â–½ 6 . Drilling machine, lathe, internal and external cylindrical grinding machine, rough grinding: Hcp below 6μm â–½7 .
3. Polishing: Multi-axis polishing machine: Hcp<λ, i.e. below 0.5μm.
✱ The purpose of rough grinding is to shape the workpiece into a certain geometric shape. After the quartz glass surface is processed with granular abrasives or abrasive combinations, the surface unevenness Hcp is 10-20μm. Rough grinding is done by hand with loose abrasives on the grinding disc or by mechanical grinding with loose abrasives. Compound abrasive. The bulk abrasives are green silicon carbide (corundum) and electrofused white corundum; etc. ; available 60#~12# electrofused corundum grit up to â–½2. Compound abrasives are SiC resin and diamond grinding wheels. Rough grinding is preferably done on surface grinder or milling machine with bonded abrasives.
✱ Large abrasive grinding: The purpose is to improve the roughness of the surface, obtain a near-finished geometry of the workpiece, and lay the foundation for polishing. grinding the surface with large abrasives, the unevenness Hcp<6.3μm; dimensional accuracy is 0.5~1.0mm. fine grinding is also available in two types: manual loose material + flat grinding discs. A small grinding disc is generally used, with a linear speed of 12m/s or more, and the workpiece is elliptical in the grinding disc with a positive rotation of 180°. Mechanical grinding, upper plate, machined parts are fixed on the circular cast iron plane. Single-axis polishing machine, double-axis bubble foot (H015 type) axis polishing machine.
✱ Fine grinding: The purpose is to further improve the quality of the glass surface, minimize the thickness of the damage layer that must be completely removed by polishing, and further correct the geometry. hcp <6 μm, â–½7 or so. The main indicator of fine grinding is the finish. The inspection method is observed with the naked eye under reflected light. Fine grinding is 120~14 μm. Scratching should be avoided as much as possible.
✱ Polished Hcp<λ; i.e., <0.5 μm. The purpose of polishing is to make the microscopic fluctuations of glass feldspar smaller than the wavelength of light waves. Polished stones can be polished; glass transmits light well. Asphalt + pine aroma polishing gel; polishing workshop requires constant temperature. Polishing equipment with high speed and low speed. Various knife holders. Fine abrasive is 120~14μm. scratching should be avoided as much as possible.
Chat with Us is a special kind of industrial technical glass made of silica, which is a very good base material.
It has a series of excellent physical and chemical properties, such as
1. High temperature resistance
The softening point temperature of quartz glass is about 1730℃, which can be used at 1100℃ for a long time and up to 1450℃ for a short time.
2. Corrosion resistance
In addition to hydrofluoric acid, quartz glass and other acidic substances almost no chemical reaction, its acid corrosion resistance than acid-resistant ceramics 30 times better than stainless steel 150 times better, especially high temperature chemical stability, is other can compare engineering materials.
3. Good thermal stability.
The coefficient of thermal expansion of quartz glass is very small, can withstand drastic temperature changes, quartz glass is heated to about 1100 degrees Celsius, put into warm water will not break.
4. Good light transmission performance
Quartz glass in the entire spectrum from ultraviolet to infrared wavelengths have good light transmission properties, visible light transmission rate of 92% or more, especially in the ultraviolet spectral region, the transmission rate of up to 80% or more.
5. Good electrical insulation properties.
The resistance value of quartz glass is equivalent to 10,000 times that of ordinary glass, is an excellent electrical insulation materials, even at high temperatures also have good electrical properties.
6. Good vacuum degree
Low permeability; vacuum up to 10 -6 Pa
Quartz glass as the "crown" of all kinds of glass, its application is very wide.
✱Optical communication
✱Semiconductor
✱Photovoltaics
✱Electric light sources
✱Aerospace and others
✱Laboratory Research
Jinzhou Shengtang Quartz Glass Co., Ltd. is a recognized supplier of high quality, competitively priced and on-time delivery of glass for deep processing. We offer custom glass for a wide range of fields and specialize in different kinds of quartz glass needs.