In the field of precision processing of numerous materials, diamond powder, with its superior characteristics, has become an irreplaceable key material in the grinding and polishing stages. The following details its applications in the processing of optical glass, gemstones, ceramics, stainless steel, and other materials.

I. Optical Glass Processing, Grinding and Polishing

Optical glass is widely used in optical instruments such as photographic lenses, microscopes, and telescopes, and the requirements for its surface accuracy and smoothness are almost harsh. Diamond powder plays an irreplaceable role here.

1. High-precision Grinding: In the initial stage of cold processing of optical glass, diamond powder with a slightly larger particle size is selected, such as products with a particle size of 20-30 microns. They act like tiny but sharp tools, driven by specific grinding equipment, quickly and evenly cutting away excess material from the glass surface. For example, an optical glass blank used to manufacture camera lenses can have its originally rough surface quickly polished smooth through this stage of processing, laying the foundation for subsequent fine processing, and the surface flatness error of the glass can be controlled to within tens of microns.

2. Extreme Polishing: Entering the polishing process, it is necessary to switch to diamond powder with an extremely fine particle size, often as low as 0.1-1 micron. Under the gentle action of the polishing equipment, these ultrafine powders perform ultra-fine grinding on the glass surface. They fill and repair the microscopic scratches and defects left by the previous grinding, reducing the microscopic roughness of the glass surface to the nanometer level. After this treatment, the scattering of light inside the optical glass is significantly reduced, significantly improving light transmittance. Taking camera lenses as an example, the light transmittance can be improved from 80% to over 95%, greatly improving the image clarity and color reproduction.

II. Gem Processing, Grinding and Polishing

Gem processing aims to showcase the brilliance of gemstones, and diamond powder is a core element in achieving this goal.

1. Coarse Grinding and Shaping: For newly mined rough stones, diamond powder with a particle size of 30-50 microns is used with professional cutting equipment to quickly remove excess parts and preliminarily carve the shape of the gemstone, such as roughly grinding an irregularly shaped diamond rough stone into a basic octahedral shape, preparing for subsequent fine grinding. This process can precisely control the Size and proportions of the gemstone.

2. Fine Polishing and Brightening: To make the gemstone shine brightly, diamond powder with a particle size of 1-5 microns is used for fine polishing. Under the high-speed rotation of the polishing wheel, the fine powder delicately polishes each facet of the gemstone, making the surface smoothness reach a very high level, greatly enhancing the gemstone's reflection and refraction of light. Taking ruby as an example, after polishing, its gloss significantly improves, and its fire is more dazzling. Under the light, it presents charming colors and brilliant light, significantly improving the gemstone's ornamental and commercial value.

III. Ceramic Processing, Grinding and Polishing

Modern ceramic materials are widely used in electronics, aerospace, and other fields, and the requirements for their surface quality are strict. Diamond powder has significant advantages in ceramic processing.

1. Efficient Grinding: Ceramic materials have high hardness and are difficult to process. Diamond powder with a particle size of 15-25 microns is selected, and its high hardness characteristics are used to efficiently cut the ceramic surface under the action of grinding equipment, quickly completing rough processing. For example, in the manufacture of ceramic substrates, the surface of the ceramic blank can be quickly polished smooth, removing defects and unevenness produced during manufacturing and ensuring the uniformity of the substrate thickness. The thickness error can be controlled within ±0.05 mm.

2. Fine Polishing: To meet the stringent requirements for surface smoothness of ceramics in fields such as electronic packaging, diamond powder with a particle size of 0.5-2 microns is used for polishing. After this treatment, the surface roughness of the ceramics is greatly reduced, effectively reducing the resistance when electronic components are in contact with the ceramic substrate, and improving the performance stability of electronic devices. For example, in the processing of ceramic electronic components, the polished ceramic surface can make electronic signal transmission more stable and efficient.

IV. Stainless Steel Processing, Grinding and Polishing

Stainless steel is widely used in kitchen utensils, medical devices, building decoration, and other industries. Diamond powder helps it achieve high-quality surface treatment.

1. Grinding to Remove Marks: The surface of stainless steel products is easily scratched and marked during forming. First, diamond powder with a particle size of 20-40 microns is used with grinding equipment to comprehensively grind the stainless steel surface, quickly removing these defects and making the surface initially smooth. For example, in the production of stainless steel kitchen utensils, the surface scratch depth can be reduced from more than 0.2 mm to less than 0.05 mm, improving the appearance quality of the product.

2. Polishing and Brightening: To give stainless steel a bright and beautiful surface, diamond powder with a particle size of 1-3 microns is used for polishing. The polished stainless steel surface forms a mirror effect, and the gloss is greatly improved, not only enhancing the aesthetics but also improving the corrosion resistance of stainless steel products. Taking stainless steel decorative panels as an example, after polishing, the surface reflectivity is significantly improved, the decorative effect is better, and at the same time, because the surface is more dense, the corrosion resistance is enhanced, and the service life is extended.

V. Mobile Phone Screen Glass Processing, Grinding and Polishing Example

In the production of Mobile phone screen glass, the application of diamond powder is crucial for improving screen quality.

1. Early Coarse Grinding: After the Mobile phone screen glass is cut and formed, diamond powder with a particle size of 10-20 microns is first used for coarse grinding to quickly grind the edges and surface of the screen glass, making its thickness uniform and meeting the design requirements. The thickness deviation can be controlled to within ±0.03 mm, preparing for subsequent polishing.

2. Fine PolishingSubsequently, diamond micropowder with a particle size of 0.2-1 micron is used to polish the surface of the screen glass with high-precision polishing equipment. After this treatment, the surface roughness of the screen glass is reduced to the nanometer level, achieving a mirror-like smoothness. This not only improves the visual clarity of the screen, making the image display sharper and the colors more vivid, but also greatly improves the touch feel, making the operation smoother and more fluid, significantly enhancing the user experience.