Contact
Xinxiang New Zuan Diamond Tools Co.,Ltd
Address: 18# Building, Jingu Oriental Plazza,No.1 Jinsui Road, Xinxiang 453000, China
Tel: +8618003823130
Email: 2571759024@qq.com
Web: www.nz-diamondtools.com

Research And Development Of Diamond Grinding Wheel

Made of diamond or cubic boron nitride (CBN) abrasive produced by the super-hard abrasive grinding wheel, because of its excellent grinding performance, has been widely used in all aspects of the grinding field. Diamond wheel is grinding carbide, glass, ceramics, precious stones and other high hard and brittle materials, special effects tools.

In recent years, with the rapid development of high-speed grinding and ultra-precision grinding technology, the grinding wheel put forward higher requirements, ceramic and resin binder grinding wheel has been unable to meet the needs of production, metal bonding wheel due to its bonding strength High, good shape, long service life and other significant features in the production has been widely used. Metal bonding agent Diamond grinding wheel according to the different ways to have a variety of sintering and plating two types. In order to give full play to the role of superhard abrasive, foreign from the early 1990s began to use high-temperature brazing process to develop a new type of grinding wheel, that is, single-layer high-temperature brazing super-hard abrasive grinding wheel, the current domestic grinding wheel is still in the development stage.

The grinding wheel is made of high-temperature sintering method, which has high bonding strength, good moldability, high temperature resistance, good thermal conductivity and abrasion resistance, and has long service life and can bear large The load. Because the grinding wheel in the sintering process inevitably there is shrinkage and deformation, so before the use of the wheel must be plastic, but the wheel dressing more difficult. At present, the grinding wheel used in the production is not only time-consuming and laborious in dressing, but also the loss of diamond particles in the dressing process. The grinding wheel itself consumes very much and the precision of shaping is low. In recent years, scholars have carried out the application of special processing methods to repair the metal binder diamond grinding wheel research work, mainly electrolytic dressing method, EDM and composite dressing method. Electrolytic dressing method is fast, but the precision is not high; EDM dressing high precision, both plastic surgery can be sharpened, but the shaping speed is slower; composite trimming method has electrolytic EDM dressing method, mechanical chemical composite finishing method And so on, the dressing effect is better, but the system is more complex, so sintered diamond grinding wheel dressing problem is still not well resolved. In addition, because the grinding wheel manufacturing process determines its surface morphology is random, the abrasive grain geometry, distribution and cutting edge of the height of inconsistencies, so grinding only a few high cutting edge cut to the workpiece, limit The grinding quality and grinding efficiency to further improve.

The advantages of grinding wheel diamond grinding wheel:

① electroplating process is simple, less investment, easy to manufacture;

② no dressing, easy to use;

③ single-layer structure determines that it can achieve a high working speed, the current foreign has been as high as 250 ~ 300m / s;

④ Although only a single layer of diamond, but still have enough life;

⑤ for the accuracy requirements of the wheel and the wheel, plating is the only manufacturing method.

It is precisely because of these advantages, electroplating wheel in high-speed, ultra-high-speed grinding occupy the undisputed dominant position. Electroplated diamond grinding wheel defects: the coating metal and the matrix and the combination of the surface of the abrasive does not exist a strong combination of chemical metallurgy, abrasive is actually only mechanical embedded in the coating metal, and thus holding a small, diamond particles in the load In order to increase the holding force, it is necessary to increase the thickness of the coating. As a result, the abrasive wear height and the chip space are reduced, and the grinding wheel is liable to be clogged, and the abrasive grains are likely to be clogged, Poor heat dissipation, the workpiece surface prone to burns. At present, the domestic plating wheel manufacturing has not yet achieved according to the requirements of processing conditions and optimize the design of the best grinding wheel, monolithic electroplated diamond grinding wheel of these inherent drawbacks will greatly limit its application in efficient grinding.