Wm 10/30 Sharpener Cbn Grinding Wheel Electroplated For Sharpening Band Saw

WM 10/30 sharpener electroplated CBN grinding wheel for sharpening band saw

The electroplated diamond grinding wheel is a diamond grinding wheel made by electrochemical method. The working layer of the grinding wheel contains diamond abrasive grains, and the diamond abrasive grains are bonded to the substrate by a metal bonding agent. First deposit the metal bond to a thickness of 20% of the height of the diamond abrasive grains (sand), and then continue to use the metal bond to bond (thicken) the diamond abrasive grains to a thickness of approximately 2/3 of the height of the abrasive grains. Including diamond dressing wheels, diamond grinding wheels for grinding or cutting.

Grinding wheel advantages

① The electroplating process is simple, with low investment and convenient manufacturing; ② No modification is required and it is easy to use; ③ The single-layer structure determines that it can reach a very high working speed, which has been as high as 250~300m/s in foreign countries; ④ Although there is only a single layer of diamond, it is still Have sufficient life; ⑤ For roller grinding wheels with higher precision requirements, electroplating is the only manufacturing method.

Because of these advantages, electroplated grinding wheels occupy an undisputed dominant position in high-speed and ultra-high-speed grinding.

Grinding wheel defective

There is no strong chemical metallurgical bond between the coating metal and the matrix and the abrasive. The abrasive is actually only mechanically embedded in the coating metal, so the holding force is small, and the diamond particles are heavily loaded and easy to fall off (or the coating peels off in pieces during high-efficiency grinding). ), leading to overall failure; in order to increase the holding force, the coating thickness must be increased. As a result, the exposed abrasive grain height and chip space are reduced, the grinding wheel is prone to clogging, the heat dissipation effect is poor, and the surface of the workpiece is prone to burns. Domestic electroplated grinding wheel manufacturing has not yet achieved the optimal design of the grinding wheel according to the requirements of processing conditions. The inherent disadvantages of the single-layer electroplated diamond grinding wheel will inevitably greatly limit its efficient grinding application.

main difference

Due to the difference in binders, resin diamond grinding wheels mainly use phenolic resin plus a small amount of metal powder as a binder, while electroplated diamond grinding wheels are a grinding wheel production process that deposits nickel-cobalt alloy on the surface of a metal substrate through electrodeposition and fixes diamond abrasives. , their main differences in performance are: 1. In terms of processing efficiency, because the electroplated grinding wheel uses higher grade abrasives and has only one layer of abrasives, it has its own advantages in heat dissipation performance, etc., so the electroplated diamond grinding wheel has higher processing efficiency; 2. In terms of service life, the electroplated grinding wheel has only one layer of abrasive, so the service life of the electroplated grinding wheel will be inferior to that of the resin diamond grinding wheel; 3. In terms of processing accuracy, the impact on the surface roughness of the workpiece, under the same particle size, the electroplated grinding wheel The processed surface roughness is worse.