ASAHI DIAMOND DIAMOND stronger, finer and higher-quality wires Creating

3B0ffl0§ Nil Manufacturing process Wire drawing die Diamond dies are used for precision drawing of various metal wires. We provide products that satisfy our customers' growing demands for precision and performance by using the rich know-how Asahi Diamond has accumulated over many years, by assuring high quality using state-of-the-art technology, and by making sure to confirm the following five points all the time. 1. Selection of correct types of raw diamonds 2. Proper die hole profile according to wire materials 3. Strict compliance with size and circularity tolerances 4. Satisfactory mirror...

Single crystal diamond dies Single crystal diamond dies are often used for creating ultra-fine wires that must meet strict dimensional precision or for drawing wire materials that require high surface quality. The applicable diameter ranges are approximately 0.008-2.0 mm for ND and 0.008-1.5 mm for AD. We fabricated ultra-fine dies, which must be equipped with a high-quality die hole surface, using Asahi Diamond's know-how on a mirror-polishing method. Cross section (along the length of die hole) of a single crystal diamond die ■ Single crystal diamond dies (standard sizes) Note. The maximum...

Sintered diamond dies Sintered diamond dies consist of a material resulting from sintering diamond powder under ultra-high pressure. They are often used to maintain the high quality of drawn wires. They are applicable to wires with a diameter between 0.04 and 30.0 mm. Sintered diamond dies These dies are frequently used to process large-diameter wires, are not wear-resistant, and are free of directional cleavage. Consequently, they wear evenly and tend to be resistant to chipping and cracking. Cross section (along the length of die hole) of a sintered diamond die ■Sintered diamond dies (standard...

(Internal parts of a die) Entrance Back relie ■Profile of a dies internal parts ■Standard tolerance of wire drawing dies set by Asahi Diamond Measurement Note. Please contact us for inquiries regarding die sizes and tolerance ranges different from those listed above. *1 IDAS: Industrial Diamond Association Standards

Shaped dies Shaped dies Die hole surface Asahi Diamond s shaped dies, equipped with sintered diamond, have earned a good reputation from our customers as the dies have enabled consistent manufacturing of high-quality shaped wires (i.e., wires with non-circular cross sections). Cross-sectional profiles of typical shaped dies are shown on the right side of this page. Shaped wires are used, for example, in connector pins and transformers for Cross section of a die hole Cross section of a drawn wire office automation equipment. The coiling of rectangular wires yields a higher space factor (higher density)...

Compacting dies Compacting dies In combination with wire twisting dies, which twist many wires together, compacting dies close the gaps between wires by exerting external force. The resulting strand wires are used as power line cables, wiring harnesses for au to m o b il e s , w ire ro p e s , an d fo r oth e r purposes. Wire twisting dies Cross section of wire twisting dies Guiding board Wire twisting die Guiding board

Shaving dies & Guide dies for tin-coating wires Shaving dies If defects are found on the wire surface and they may cause damage to the performance of final products, shaving dies are used to remove (shave off) them. ■Characteristics ・B e c a u s e t h e s e d i e s h a v e a l o n g lifespan, they enable shorter preparation time and reduce the amount of wasted wire materials ・The lifespan of these dies is 50 to 100 times longer than that of dies made of cemented carbide ・These dies can shave wires to give them superior surface conditions Shaving dies Tin coating guide dies A copper wire gets...

Sinking dies ／ Floating dies & Nipples Sinking dies/floating dies In a tube drawing process, a plug is inserted into a tube as a means to reduce the diameter of the tube in the same manner that dies are used to reduce the diameter of wires and round bars. The method to reduce only the outer diameter of tubes is called sinking, and this can be achieved using sinking dies. This method does not change the wall thickness of tubes, but deteriorates the tubes internal surface conditions. However, the tube drawing process can be enhanced by inserting a metal bar called a floating plug into the die. This...

Applied products Diamond wire guides used with wire-cut electrical discharge machines The accuracy of wire guides largely determines the precision of wire electrical discharge machining used in metal forming processes by various industries including die manufacturers. In collaboration with electrical discharge machine manufacturers, Asahi Diamond is among the first die manufacturers to develop diamond wire guides contributing to precision machining. Diamond ultra high pressure water jet nozzles Diamond water-jet nozzles were produced using the know-how we accumulated about wire-drawing dies. As...

Wear resistant tools 0E3E Hollow centers Hollow centers hold a workpiece in place during lathe turning or cylindrical body processing. Very hard and wear resistant, Asahi Diamond's hollow centers enable creating cylindrical products with a precision equivalent to circularity of less than 1 jum. Nozzle cutters are used to cut electronic component (e.g., terminals and switch contact parts) materials. Asahi Diamond's PCD nozzle cutters have excellent cutting quality and a long lifespan. Material yield associated with them is higher than that associated with circular saws, and the quality of cut...

《Precautionary notes on handling of dies》 1. Set dies correctly. ● ● Correctly set dies in die holders. Very carefully pass a wire through dies so that it makes a straight line. Neglecting to do so may lead to the production of low-quality drawn wires or abnormal wearing of dies. 2. Use a lubricant. The use of lubricants greatly enhances work efficiency, the surface finish of wires, and the lifespan of dies. ● Insufficient use of lubricants may cause damage to dies and yield wires with non-lustrous surfaces. ● Keep lubricants clean all the time. ● 3. Handle dies gently. ● Do not apply impact to dies;...