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Asahi Diamond produces various types of precision wire drawing dies, such as those applicable to gold and other soft wires used in the manufacture of semiconductors. It also markets various types of drawing dies. Natural diamond, SUNPAX, and synthesized single-crystal diamond are used for wire drawing dies, such as formed dies, guide dies for tin-plated wires, diamond nipples, and others.

Diamond sprue bushings are ideal for injection molding of filler-reinforced plastics. They offer excellent wear resistance and help prevent “progressive wear at the nozzle contact point,” which is a common cause of resin leakage issues. These bushings are crafted from high-quality diamond, a material that—in addition to its high hardness—exhibits low wettability. Furthermore, their service life is more than 10 times longer than that of conventional iron-based metal bushings. This also helps reduce waste.

By using diamond for water jet nozzle, water stream width can be minimized and directness and ultrahigh pressure achieved, resulting in higher precision and longer life. Furthermore, by expanding the width of the water stream, the nozzle can also be used for cleaning and removal of burrs.

The accuracy of the wire guides determines the precision of wire electrical discharge machining(EDM), which is used for metal forming processes in various industries. Asahi Diamond has developed this highly functional diamond wire guide jointly with an electrical discharge machining equipment manufacturer.