Which aluminum oxide abrasive is the best as the key raw material for ceramic grinding wheels?
Brown fused alumina and white fused alumina are key raw materials with their own advantages
The advantage of brown fused alumina for vitrified grinding wheels lies in its bonding performance, which requires high rigidity, dimensional stability, and high cutting temperatures. As a qualified manufacturer, we offer high-quality toughness and self-sharpening properties tailored to customer needs. Vitrified bonds extend wheel life and reduce the risk of wheel fracture. Due to the differences in permeability and pore design in vitrified bonds, the overall product's grain shape and PSD stability directly impact heat dissipation and chip breaking performance, thereby determining the likelihood of thermal damage.
Brown aluminum oxide, also commonly used in resin-bonded grinding wheels, meets the customized requirements for superior self-sharpening and initial cutting force. Its unique angular fracture and moderate hardness facilitate rapid cutting edge establishment, providing a high initial MRR. It also offers superior toughness under impact and vibration conditions compared to more brittle abrasives. All products can be customized to meet customer needs. Common mesh sizes include 60#, 70#, 80#, 90#, 100#, and 120#. Please leave a message for inquiries.
White fused alumina, with its high purity, dense crystal phase, and low soluble impurities, is a key raw material for premium abrasive tools, exhibiting exceptional properties that are crucial in vitrified bond systems. High purity reduces the formation of low-melting-point phases, while dense grains minimize dusting and maintain the cutting edge. Low impurities reduce the risk of chemical reactions with the glass phase in the formulation or the workpiece surface. Our processing technology, through a melting-cooling-crushing-grading process, controls particle size and shape (verified by SEM). Combined with rigorous screening/laser PSD control, this ensures batch-to-batch consistency and meets the inspection standards of customers with large-volume purchasing needs.
In addition, wholesale customers need to see quantifiable returns from processing: standardized MRR (g/min or mm³/s) testing, polishing/grinding comparisons, life curves (unit mass loss vs. number of parts processed), wheel HMOR/ring-test, and fracture/fines generation rates. Reasonable data should be provided under specific test conditions and compared with competing materials (such as brown corundum and SiC) under the same conditions to demonstrate the advantages of white corundum in precision machining. We can also provide free samples for your use if necessary.
