Abstract: An automatic edge sharpener includes a bottom box device, a clamp device, a grinder device and guide blocks. The present invention has the advantages of reasonable and simple structure, low production cost and convenient installation, the guide blocks come into contact with the guide wheel to change the movement track of the grinding wheel and sharpen edges along different tracks, which can be a straight line, a circular arc, a wavy shape, and the like, thus achieving a wider application range; the present invention adopts a clamping method in which the positioning plates and the clamps are mated, the positioning plates are detachable and removable, different positioning plates can be selected according to the workpiece. the number of sides of the support frame is designed according to the shape of the product, and also for wavy edge back and forth, which can meet the use requirements of various products.

Abstract: A corrosion-resistant ceramic electrode material includes ceramic particles and, present between them, a three-dimensional network electroconducting path composed of a reductively fired product of a carbon-containing polymeric compound. This material is manufactured by a method in which a polymerization reaction of a polymerizable monomer previously contained in a ceramic slurry is performed to gel the ceramic slurry to thereby give a green body; and after drying and degreasing, the green body is fired in a reducing atmosphere.

Abstract: A corrosion-resistant ceramic electrode material includes ceramic particles and, present between them, a three-dimensional network electroconducting path composed of a reductively fired product of a carbon-containing polymeric compound. This material is manufactured by a method in which a polymerization reaction of a polymerizable monomer previously contained in a ceramic slurry is performed to gel the ceramic slurry to thereby give a green body; and after drying and degreasing, the green body is fired in a reducing atmosphere.