High-surface smoothness CBN grinding wheel with ultrafine granularity and containing nanometer carbon spheres and preparation method thereof

Abstract

The invention discloses a high-surface smoothness CBN grinding wheel with ultrafine granularity and containing nanometer carbon spheres; firstly, CBN abrasives with ultrafine granularity and microcrystal ceramic abrasives are pretreated in the preparation process of the grinding wheel; the treated abrasives are improved in mechanical performance, and are better in bonding effect with adhesive; abrasives treated by solution prepared by sodium polystyrenesulfonate and polyethyleneimine are excellent in dispersibility, are not easy to be agglomerated, and are formed to a stable system without being precipitated and flocculated in the solution; dried powder and adhesive are better in wettability and compatibility, and are tight and firm in bonding; the added nanometer carbon spheres effectively improve the heat dissipation and heat conduction performances of the grinding wheel, and improve the structural compactness; fluorine carbon resins serve as adhesive to enable the surface of the grinding wheel to become more smooth; waste chips are not easy to be bonded, and are easy to be removed; and the grinding wheel is high in strength, smooth and compact in surface, quick in cooling and not easy to damage workpieces, resists both wear and corrosion, and can be applied to the grinding of metal parts with high precision.

Description

technical field [0001] The invention relates to the technical field of ultra-fine-grained CBN grinding wheels, in particular to a high-surface-smooth ultra-fine-grained CBN grinding wheel containing nano-carbon spheres and a preparation method thereof. Background technique [0002] Ultra-fine-grained CBN grinding wheel refers to a type of grinding wheel made of ultra-fine-grained (≤5μm) CBN abrasives and bonds. This type of grinding wheel has lower surface roughness and surface damage than traditional grinding wheel materials. Polishing , The grinding precision is higher, and the surface quality of parts can be improved, which is also an important direction for the development of the grinding wheel industry. [0003] In terms of production technology, due to the ultra-fine particle size of the abrasive, it is easy to agglomerate between the abrasives, and the bonding with the binder becomes poor. The prepared grinding wheel is very easy to scratch the surface of the workpiec...

AI Technical Summary

Problems solved by technology

[0003] In terms of production technology, due to the ultra-fine particle size of the abrasive, it is easy to agglomerate between the abrasives, and the bonding with the binder becomes poor. The prepared grinding wheel is very easy to scratch the surface of the workpiece and affect the quality of the workpiece. Therefore, in production In the process, it is necessary to pre-treat the ultra-fine abrasive to improve its compatibility and dispersion with the binder, and at the same time develop a binder suitable for ultra-fine abrasives to obtain a finished product with low surface roughness

At present, the technology for preparing ultra-fine grinding wheels still has the disadvantages of low processing efficiency and high production cost, so it is necessary to further improve and optimize the raw material formula and preparation process