Preparation and electrolytic dressing method of a brazed grinding wheel with self-lubricating function and good electrolytic film-forming performance

Abstract

The invention discloses a method for preparing and electrolytically dressing a brazed grinding wheel with self-lubricating function and good electrolytic film-forming performance. Carbon microspheres with good electrical conductivity and self-lubricating performance are added to active solder powder, and molded And high temperature brazing technology to prepare multi-layer brazed grinding wheel. The presence of carbon microspheres effectively improves the intensity of electrolytic corrosion in the electrolytic dressing of the brazed grinding wheel, significantly increases the film formation speed and thickness of the oxide film in the electrolytic dressing, promotes the timely shedding of abrasive particles, and ensures the integrity of the working surface of the brazed grinding wheel. Sharpness and dressing efficiency; while carbon microspheres are evenly distributed in the oxide film, it can also effectively improve the adhesion strength of the oxide film, the grinding and polishing of the oxide film and the self-lubricating performance of carbon microspheres can be fully exerted, and the brazing performance can be significantly improved. The machined surface quality of the welding grinding wheel can be fully utilized in the electrolytic dressing process, thereby significantly reducing the cost, and can be used for high-efficiency and low-damage processing of difficult-to-machine materials such as engineering ceramics.

Description

technical field [0001] The invention relates to the preparation of brazed grinding wheel and its electrolytic dressing technology, in particular to a preparation and electrolytic dressing method of a brazed grinding wheel with self-lubricating function and good electrolytic film-forming performance. Background technique [0002] Brazed grinding wheels have the characteristics of large abrasive grain holding force, high cutting edge height, and excellent processing performance. They are currently used and developed in the field of manufacturing and processing. However, due to the limitation of the preparation process, most of the current brazed grinding wheels are single-layer superhard abrasive brazed grinding wheels. The abrasive grains in the working layer have only one layer. In this regard, the inventor has developed a multi-layer brazed diamond grinding wheel by compression molding and high-temperature brazing technology in previous studies. The abrasive grains of the m...

AI Technical Summary

Problems solved by technology

This invention has achieved good technical results, but there are still some deficiencies: 1. During the spraying process of the electrolyte containing carbon nanotubes, only part of the carbon nanotubes really enter the electrolytic trimming area, and a part of the carbon nanotubes dissolve with the electrolyte. 2. In order to adsorb the carbon nanotubes on the surface of the brazed grinding wheel as the electrolytic anode, the carbon nanotubes need to be treated with hot acid oxidation to make the surface negatively charged. This process is cumbersome and The cycle is longer; 3) Carbon nanotubes have a large aspect ratio and a helical coil structure, which is not easy to disperse evenly, and is easy to entangle with each other to cause agglomeration, and the material cost is high

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