Advantages of sand belt grinding:
(1) The selected needle shaped sand particles are polished using advanced "electrostatic sand belt grinding technology and electrostatic sand planting method", which ensures that the sand particles are evenly upright on the substrate, with the sharp edge facing upwards and arranged in a neat orientation, with good uniformity, large chip gap, small contact surface, and good cutting performance. The application of this multi blade cutting tool for grinding processing results in high production efficiency.
(2) When grinding with sand belts, the contact surface is small and the friction heat is low, which can effectively reduce the deformation and burn of the workpiece. The machining accuracy is high. The sand belt has flexible contact during grinding, and has multiple functions such as grinding, grinding, and polishing. In addition, the small vibration of the grinding system and stable grinding speed make the surface machining quality roughness value small and the residual stress state good. The roughness of the workpiece can reach Ra0.4-0.1 μ m, and the surface has uniform roughness, resulting in high machining surface quality.
(3) Sand belt grinding can be used for flat, outer circle, inner circle grinding, and complex irregular surface machining. In addition to various general and specialized equipment, designing a sand belt grinding head can be easily installed on conventional ready-made equipment such as lathes and milling machines. This not only greatly expands the functions of these machine tools, but also solves the precision machining of difficult to machine parts such as ultra long, ultra large shafts, flat parts, irregular surfaces, etc. The sand belt grinding process is flexible and adaptable.
It is precisely by utilizing the advantages of sand belt grinding that we have made the sand belt into a wheel shaped coated grinding tool and applied it to the polishing of stainless steel pipes, solving the problems of easy burning and insufficient rigidity on the surface of stainless steel pipes.