Tool Edge Passivation is an issue that is often overlooked but is critically important. The importance lies in the fact that passivated tools can significantly increase edge strength, tool life, and cutting stability.
Walking through the streets, you’ll always see well-dressed men and women, with trendy, fashionable outfits—personalized, avant-garde, vintage… As long as your imagination is enough, you can mix and match however you like, and still turn heads. In this era of bold expression, everything is up to you. However, the same cannot be said for the metallographic polishing machine in our lab. Customization is fine, but you can’t mismatch, or you won’t be able to reveal the truth of your sample.
Our Understanding of Diamonds Diamonds, the most precious of the five major gemstones, symbolize purity, loyalty, and eternal brilliance. They are the perfect representation of love, with diamond rings becoming the most important token of marriage. Diamonds also appreciate annually by 5%-10% or even more, making them a beloved luxury item. However, because diamonds are …
During the preparation of metallographic samples, whether they are metals, composite materials, or electronic materials, the use of metallographic sandpaper is usually the first step. The purpose is to remove the damage and deformation layer caused by the cutting process, which is the coarse grinding stage and serves as preparation for subsequent polishing. This step is critical because if not handled properly, it will affect the results of later processes and may even prevent the sample from being properly ground, making it impossible to perform the final metallographic analysis. With this in mind, the editors at Lianneng Metallography have a few suggestions to share, which should help improve your sample preparation work.
There are many types of grinding wheels and tools, with various shapes and sizes. Depending on the abrasive material, bonding agent, and manufacturing process, each grinding wheel has a specific range of applications. An incorrect choice can directly affect machining accuracy, surface roughness, and production efficiency. Therefore, when performing grinding operations, it is essential to select the appropriate grinding wheel based on the specific situation. How can we correctly choose a grinding wheel? Here’s a summary of commonly used grinding wheels in machining to help you make informed choices.
Diamond is one type of superhard material and cubic boron nitride is another. The two kinds of superhard materials after a series of machining and processing procedures can be made into a variety of tools and directly with them into a variety of functional devices, collectively referred to as superhard material products.
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 »
