Application of potassium fluoride aluminum in abrasive products

Potassium aluminum fluoride (PAF), inorganic salt; alias potassium cryolite, potassium aluminum fluoride, KAIF, KAlF4/K3AlF6. PAF is a high-purity inorganic molten salt that is widely used in industrial production. PAF is often used as a filler in the production of abrasives; it is used as a flux in the metal processing industry to maximize the metal recovery of secondary molten aluminum; it can also be used as an additive to accelerate dispersion and reduce Or reduce the magnesium content in liquid aluminum alloys. Researchers at KBM Affilips have recently introduced the application of PAF in the production of abrasives.

The role of PAF in the consolidation process of abrasive
The PAF bonds the abrasive to the surface of the abrasive to act as a binder. The material used for the binder must have sufficient bond strength to prevent the abrasive from falling off or damage the surface of the workpiece; and at the same time have sufficient toughness to be lower than the axial and radial forces generated during the grinding process. In addition, the PAF is able to quickly derive the heat generated on the workpiece to keep the workpiece cool and cool, thereby preventing oxidation; and the chemical contact of the PAF with the surface of the workpiece also enhances the abrasive performance of the process. PAF is mainly used for resin-bonded abrasives, especially for bonded abrasives of phenolic resin materials. Among them, the binder includes a series of bonding components: resin, cryolite, PAF and pyrite. Cryolite and PAF keep the ground surface cool and prevent oxidation on the surface.

Advantages of PAF relative to cryolite
Cryolite has also been used as a filler, but PAF has an advantage over cryolite: PAF has better thermal conductivity than cryolite, as explained earlier in the relevant patents of the 1960s. In addition, PAF has a low melting point and is better than cryolite in the fracture of reinforced glass fibers.

Other advantages of using PAF
PAF is low cost and is not classified as dangerous. There are fewer restrictions on transportation, storage and material processing.

PAF for those abrasive products
PAF is used as an active filler or active coating component in bonded abrasive and coated abrasive products to enhance product performance. According to feedback from a manufacturer of a hundred impellers, the use of PAF materials on the one hand improves the performance of the product while reducing the amount of abrasive used by approximately 65%. What are the requirements for PAF quality parameters in the abrasive grinding production process?
Commercially available PAFs currently available are prepared using 99.7% pure primary aluminum; stoichiometry, particle size distribution, humidity, and pH are all required. (Compile: China Abrasives Network)

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