31
Mar
Hard and brittle materials refer to materials with high hardness, low toughness, high compressive strength but low tensile strength, which are prone to brittle fracture when subjected to external forces. Their main categories include: monocrystalline silicon (Si), quartz (SiO₂), boron carbide (B₂C), silicon carbide (SiC), aluminum nitride (AlN), aluminum oxide (Al₂O₃), zirconium oxide (ZrO₂), silicon nitride (Si₃N₄), etc. With their excellent physical, chemical and optical properties, these materials play an irreplaceable important role in many high-tech and high-end manufacturing fields such as semiconductors, optoelectronics and displays, medical care, automobiles and precision machinery.
Workpiece Name: Quartz Glass Substrate
Workpiece Material: Quartz Glass (SiO₂)
Workpiece Hardness: Mohs Hardness 7
Target Roughness: Rq 0.1μm
Cooling Method: Wet Cutting
| Item/Solution | Original Solution | Moresuperhard Solution (Our Solution) |
| Tool Name (Tools) | PCD Micro Edge Mill | PCD Micro Edge Mill |
| Specification | D8 | D8 |
| Material | PCD | PCD |
| Cutting Depth ap (mm) | 0.005 | 0.005 |
| Cutting Width ae (mm) | 6 | 6 |
| Spindle Speed RPM (r/min) | 20000 | 20000 |
| Cutting Speed Vc (m/min) | 500 | 500 |
| Feed per Revolution f (mm/rev) | 0.025 | 0.025 |
| Surface Roughness Ra (μm) | 0.06 | 0.06 |
| Tool Life (Pieces) | 50 | 150 |
As a typical hard and brittle material, quartz glass is prone to edge chipping, microcracks and other defects during processing. Our tools adopt a specially parameterized cutting edge combined with ultra-precision laser processing technology, which not only ensures the precision of the cutting edge but also maintains its sharpness, effectively improving the machining surface quality. After optimization, the surface roughness of the workpiece is improved from Ra 0.06 (with obvious machining horizontal stripes) in the original solution to Ra 0.03, and the surface quality is improved by one level overall.
Quartz glass has a Mohs hardness of 7 and is extremely brittle, leading to rapid tool wear during processing. Our tools are made of high-quality PCD material with excellent wear resistance, and the tool life is 3 times longer than that of the original solution, greatly reducing tool loss costs.
The ultra-precision micro-edge series tools are specially developed for the processing of hard and brittle materials. Adopting an ultra-dense tooth design, they have the advantage of high-efficiency processing. While extending the tool life, they reduce the number of tool changes and machine downtime, effectively improving production efficiency and helping customers in the semiconductor and high-end manufacturing industries enhance their core product competitiveness.
In the precision machining track of hard and brittle materials, stability and high efficiency are the only criteria for measuring core competitiveness. Moresuperhard has always taken cutting-edge technology research and development as the starting point, deeply understood the processing pain points of hard and brittle materials such as quartz glass and monocrystalline silicon, and insisted on full-link innovation from tool material, cutting edge technology to cutting logic.
Through this quartz glass substrate processing case, we have verified a conclusion again: choosing the right tool is choosing an efficient production line. We will continue to take ultra-precision technology as the cornerstone, constantly refresh the industry benchmark for hard and brittle material processing, and help high-end manufacturing fields such as semiconductors, optoelectronics and medical implants achieve breakthroughs and iterations of core technologies with lower costs and higher quality.
