FDK develops a grinding system that can complete transparent resin grinding in a short time

FDK has developed a technology that uses magnetic abrasive materials to polish soft materials such as resin materials in a short period of time. In addition to being able to grind a transparent resin - the surface light transmittance of the acrylic resin is up to 90%, it is also possible to perform surface treatment of a soft material such as a sheet and a non-magnetic thin film metal.

The grinding method is simple. Simply apply a magnetic paste to a special turning tool with a magnet attached to the front end, then rotate the turning tool and approach the object (workpiece) such as resin for grinding. The process from resin processing to grinding can be automated using existing equipment such as NC machines.

The abrasive material processed from the columnar iron-based magnetic body is attached to a special turning tool like a brush. Thus, the shape of the abrasive can be changed with the shape of the workpiece and closely adhered to the workpiece, and even a three-dimensional shape can be ground. In general, when a material such as a resin having a soft surface is mechanically polished, the surface is damaged, and this time, the magnetic polishing can reduce the roughness of the surface to 20 nm or less.

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