In order to let more people know about polishing and grinding, Honway update the knowledge column from time to time.
Mirror finishing refers to the process where the surface of a workpiece is polished to the point where it can reflect images like a mirror. This level of finish signifies exceptional surface quality, providing products not only with a high “aesthetic value” but also reducing notch effects, thereby extending the fatigue life of the workpiece. It holds significant importance in many assembly and sealing structures.
Why does a platinum ring lose weight after polishing? Over time, platinum rings tend to get scratched and lose their shine. To restore their appearance, polishing is required. When polishing a platinum ring, does it reduce its weight?
The primary goals of polishing molds are to increase the brightness and aesthetics of plastic molds and to make demolding easier.
Gemstone (Gem) Mohs hardness (Hardness) Specific Gravity (Specific Gravity) Refractive Index (Refractive Index) Reflectivity (Reflectivity) Double Refraction (Double Refraction) Dispersion (Dispersion) Synthetic Rutil (Synthetic Rutil) 6.5 4.25 2.76 19.75 0.287 0.330 Synthetic Moissanite (Synthetic Moissanite) 9.25 3.22 2.67 20.67 Strained 0.104 Lithium Niobate (Lithium Niobate) 5.5 4.64 2.55 14.87 0.090 0.130 Diamond (Diamond) 10 3.52 …
Identification Characteristics of Diamonds and Their Simulants Read More »
The specific surface area of the powder surface will change because of the size of the powder particles, when the powder particles are large, the specific surface area will decrease, when the powder particles are small, the specific surface area will increase, the size of the specific surface area relates to the size of the …
Currently, the world’s popular high-temperature and high-pressure diamond synthesizing equipment mainly consists of two-sided tops (belt, which is mainly popular in Europe and the United States), six-sided tops (unique to Mainland China), and splitting spheres (barssplitsphere, Russia) or modified splitting spheres (Gemesis Company). In 1954, before Christmas, the General Electric Company in the United States …
Diamond Synthesis Method — High Temperature and High Pressure Read More »
In 1994, Thomas R. Anthony et al. of GE filed U.S. Patent 5,437,891 (issued in 1995) stating that the growth rate of cubic facets (100) of polycrystalline diamonds can be increased by chemical vapor deposition (CVD). In particular, if a small amount (e.g., 1%) of air (78% nitrogen, 21% oxygen, 1% argon) is added to …
chemical vapor deposition of diamond monocrystalline Read More »
Natural diamonds are produced at depths of over 130 kilometers. It has a unique cubic crystal structure. Each carbon atom in a diamond is bonded to four other carbon atoms, making it the hardest natural substance known in the world. How are diamonds formed? Let’s find out!
How to make diamonds by chemical vapor deposition? Chemical vapor deposition (CVD) produces pure, high-performance solid materials. A small diamond, which serves as the “core”, is placed in a vacuum environment to remove impurities and injected with high temperature gases – methane and hydrogen – at 3,000 degrees Celsius, which cracks to form electrically charged …
Diamond Synthesis Method – Chemical Vapor Deposition Read More »
