Magnetic field characteristics of the flat type electro-magnetic barrel finishing machine

The effect of increasing the magnetic flux density in the container is examined in an attempt to improve the clectro-magnetic barrel finishing machine. A rolled steel core was placed on the cover of the container as the ferro magnetic material to increase the magnetic flux density. The magnetic flux density in the container could then be varied by the height of the container and the applied voltage. The effect of the magnetic flux density on the finishing characteristics was investigated under various conditions. It was found that the magnetic flux density in the container continuously increased when the upper iron core end of the finishing machine was installed near the cover of the container. Optimum values of the magnetic flux density with respect to the finishing characteristics were obtained, and revealed to vary with respect to the material of the workpieces.