Grinding wheels for the thermal spraying industry are core precision grinding tools in the post-treatment process of thermal spray coatings. They are specially designed for the rough grinding and shaping, precision grinding and sizing, and mirror polishing of metal, ceramic and cemented carbide coatings prepared by processes such as plasma spraying, high-velocity oxy-fuel (HVOF) spraying and arc spraying. Their core functions are to efficiently remove spray splatters, edge burrs and local loose defective layers on the coating surface, accurately calibrate the coating thickness and the overall dimensional accuracy of workpieces, and adjust the coating surface roughness to meet design standards. Meanwhile, they feature excellent substrate protection capability, avoiding scratches or dimensional deviations on the workpiece substrate caused by over-grinding, and further improving the wear resistance and sealing performance, corrosion resistance stability of the coating, as well as its compatibility with subsequent assembly and painting processes.

The product system covers a full range of models adapted to different coating materials, grinding working conditions and precision requirements. Classified by abrasive type, it includes four categories: aluminum oxide grinding wheels, silicon carbide grinding wheels, cubic boron nitride (CBN) grinding wheels and diamond grinding wheels. Classified by bond type, it consists of three categories: vitrified bond grinding wheels, resin bond grinding wheels and rubber bond grinding wheels. Classified by grinding granularity, it is divided into three specifications: rough grinding wheels (36–80 mesh), medium grinding wheels (100–240 mesh) and precision grinding wheels (320–1200 mesh). Among them, aluminum oxide vitrified bond grinding wheels have high hardness and strong heat resistance, suitable for rough grinding and shaping of conventional coatings such as carbon steel and zinc-aluminum alloy coatings; silicon carbide resin bond grinding wheels boast excellent sharpness and good self-sharpening property, adapted to the medium grinding and finishing of aluminum oxide ceramic and zirconia coatings; CBN grinding wheels feature outstanding wear resistance and can withstand high-temperature dry grinding environments, specially designed for precision grinding and sizing of high-hardness alloy coatings such as WC-Co and NiCr-Cr₃C₂; diamond grinding wheels have extremely high abrasive hardness, applicable to mirror polishing of super-hard ceramic coatings such as SiC and Al₂O₃-TiO₂, which can reduce the coating surface roughness to below Ra 0.1 μm. Vitrified bond grinding wheels have high overall rigidity, suitable for heavy-duty grinding equipment; resin bond grinding wheels have good toughness, compatible with the grinding of workpieces with complex curved surfaces; rubber bond grinding wheels have excellent elasticity, mostly used for fine polishing of coating surfaces.

All grinding wheels are manufactured with high-quality raw materials and precision molding processes. After multi-stage sorting and purification, the abrasives are fixed on the substrate through precise proportioning and high-pressure molding processes, ensuring uniform distribution and dense arrangement of abrasive grains, which effectively improves grinding efficiency and consistency of coating surface processing. The bond formula is optimized for the grinding characteristics of thermal spray coatings: vitrified bonds have high melting point and thermal shock resistance; resin bonds have both strength and toughness; rubber bonds have moderate elasticity. Corresponding bond types can be matched according to different grinding conditions. The product boasts core advantages such as high grinding efficiency, stable and controllable coating removal rate, long service life and excellent compatibility with various thermal spray coatings, with no problems such as abrasive shedding and wheel edge chipping during grinding. It is suitable for both dry grinding and wet grinding operation modes; wet grinding can effectively reduce grinding temperature and avoid coating performance degradation caused by high-temperature annealing. Meanwhile, it can be customized into various shapes such as flat, cup, bowl and dish according to workpiece shapes, adapting to the grinding needs of different parts such as flat surfaces, inner holes and special-shaped curved surfaces, and compatible with various equipment including manual grinders, CNC grinding machines and automated grinding production lines.

Backed by professional R&D and production capabilities, we can provide customized grinding wheel solutions according to customers' specific needs. For different coating materials, grinding precision and equipment models, we can customize wheel diameter (50 mm–500 mm), thickness (5 mm–50 mm), abrasive granularity and bond type, and optimize abrasive concentration and bond ratio to meet the needs of special working conditions such as ultra-rough grinding for thick coating removal and ultra-precision grinding for mirror polishing. The product is widely used in thermal spraying fields such as the finishing of aero-engine blade coatings, the grinding of petroleum drilling bit coatings, the sizing of rail transit shaft component coatings, the polishing of mold surface coatings and the post-treatment of wind power gearbox component coatings. It can significantly improve the quality of finished coatings, shorten the time consumption of post-treatment processes, and reduce the production and operation costs of enterprises.

If you want to learn more product details, please contact **Jiangxi Velavision**.