Diamond micro powder is a powder with regular particle shapes and a certain particle size distribution, made from sub-millimeter-grade diamond monocrystals through crushing, shaping, and a series of physical and chemical treatments. It is currently the most advanced and precise superhard abrasive in the world, widely used in various fields such as machinery, electronics, metallurgy, construction, and national defense.
It can be used both as a loose abrasive and can also be made into polishing paste, polishing discs, fine polishing discs, honing stones, polishing fluids, polycrystalline diamond composite discs, and sandpaper.
Diamond micro powder can be divided into two categories according to crystal structure: the vast majority are monocrystals, but there are also a few polycrystals. According to different classification methods and means, diamond micro powder can be divided into ordinary micro powder, fine micro powder, ultra-fine micro powder, and so on.
Currently, the application of diamond micro powder is mainly in fields such as resin grinding discs, wire saws, ceramic bonding agents, and electroplating tools. It is worth mentioning that the finer classification of diamond micro powder has become increasingly refined with the development of diamond tools.
At the same time, the particle size of micro powder used in diamond tools is becoming finer. However, the amount of fine-grained diamond micro powder used by the diamond tool industry is relatively small.
Therefore, there is a large backlog of fine-grained diamond micro powder. There are two methods to address this: First, increase the use of fine-grained diamond micro powder in the diamond tool industry, which requires technological advancement across the industry; Second, agglomerate the fine-grained diamond micro powder to form larger particle clusters, expanding its application. Using a bonding agent to agglomerate fine-grained diamond into large-particle diamond abrasives has the characteristics of low grinding force, high processing quality, and good self-sharpening. This is a feasible method.
In contrast to traditional monocrystalline/polycrystalline diamond abrasives, diamond micro powder can significantly reduce enterprise processing costs. The agglomeration into spherical shapes is highly efficient, with few scratches and good roughness. The size of the particles can be customized according to customer requirements. It has been successfully applied in the fine grinding of hard and brittle materials such as ceramics, sapphire, and silicon carbide.
As a substitute for boron carbide, diamond micro powder effectively reduces the environmental burden on customers and minimizes environmental impact. More importantly, as a core raw material, it can be formulated into efficient polishing liquids and extended to polishing pads, sandpaper, polishing brushes, polishing skins, and even thinning grinding wheels, constructing a comprehensive and multi-level solution. This truly realizes the vision of "one material for multiple uses, countless innovations."
Looking ahead, as manufacturing accelerates its transformation toward intelligence, greenness, and service orientation, diamond micro powder will enhance polishing efficiency and surface quality, leading the industry toward sustainable development.
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