Impregnation of grinding wheel

The use of hardeners based on stearin and * as the treatment for grinding wheels is one of the effective ways to improve the grinding performance of abrasives. However, these components do not form a homogeneous melt, with the hard fat distributed above and the * distributed below. For this reason, one side of the wheel is saturated with stearin, and the other side is soaked, resulting in a reduced use of the wheel.

Melt can be mixed intensively by the following method.

On the disc 3 below the grinding wheel 1, there are four bladed impellers 2 arranged at an angle of 10° to 20° to the disc radius, and having a 30° to 40° twisting angle.

Firstly, the IIII150×13×32 wheel with 24A40CMI-CM2K5B characteristics is heated to 140-150°C, then put into the impregnant melt heated to 130-135°C, and the pulse speed is reduced from 2.8 rpm to stop pulse. Turn for 4 minutes. This ensures that all of the impregnant components are uniformly saturated in the grinding wheel.

The wheel is lifted from the melt and turned to rotate the wheel to throw away excess impregnant. The grinding wheel is kept in air for 1-1.5 hours.

Abrasive wheels that have not completely thrown off the impregnating agent will condense on the diamond as wedge-shaped knobs when dressing. Due to the greasy surface of the grinding wheel and the impregnation agent burned during grinding, the grinding wheel (specifications 1 and 2) is even worse than the unimpregnated grinding wheel. Conversely, if the wheel impregnant is thrown away too much, it can cause burns when grinding.

The best specifications are 3, 4 and 6. The grinding wheel throws off the excess impregnant according to this specification, and it does not form a tumor on the diamond during dressing, but the surface is not greasy during grinding, and no burn is generated on the ground surface.