WCA March 2007

Dies & Die Shops

PCD dies. Even some of the diameter ranges traditionally covered by natural diamond dies were quickly replaced by PCD dies, particularly the bigger sizes where, beside a clear price advantage, better performance soon convinced the users to adopt the new material. PCD blanks have considerably evolved and improved throughout the years and there are now a wide variety available in the market with different dimensions, grain structures, supported or unsupported by a metal ring, thermally stable at temperatures up to 1,200ºC, round blanks, square and hexagonal. However, when large bore size diameters are involved, which is synonymous of inclusion in the budget for an expensive die, users are still reluctant to switch from tungsten carbide dies to PCD. PCD dies have opened a new world of possibilities for the wire and cable industry. A constant and steady production, maintaining strict tolerances and excellent superficial quality for much longer, are the most important facts that are positively considered by potential users.

Chyi Meei manufacture a wide range of products

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Establishing a joint venture with Osaka Diamond Industrial Co Ltd (ALMT Corp) in 1998 has allowed Chyi Meei to deliver cutting-edge solutions. With highly stable manufacturing technology, the product specification is from the maximum 8mm to the finest 0.01mm. Chyi Meei is also an ISO9002 certified company, which deploy quality assurance to deliver advanced solutions. Chyi Meei continually strives to meet customer demand and has clients in the wire electronic industry, semi- conductor, electronic devices and automobile to optoelectronic, optical products and medical apparatus businesses. The products include natural diamond dies, polycrystalline (or sintered) diamond dies, shaped wire-drawing diamond dies, guiding dies, PVF dies, tin-coated copper dies, point dies, diamond wheel, diamond ultra precision cutting (UPC) and diamond rotary dressers. Chyi Meei Precision Industry Co Ltd – Taiwan Fax : +886 22657 2929 Email : chyimeei@diamonddies.com.tw Website : www.diamonddies.com.tw Go on, make the switch By the mid-1970s it took a long time and a lot of effort convincing wire drawers to switch from inexpensive tungsten carbide dies to the new

The PCD die blank in > ø 33.00mm size

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A clear example is now the increased application of ‘XXL’ PCD dies for cable stranding and compacting. Three well- known main PCD blank manufacturers cover all possible diameters involved from the small-medium sizes up to the spectacular >ø 33.00mm. At Temsa-Diamond, the technical department develops and designs the most suitable die geometry for cable stranding and compacting, supported by an accurate execution and perfect final mirror polishing, thus ensuring the expected dimensional exactness, long die life and satisfactory performance.

Temsa-Diamond – Spain Fax : +34 93660 0473

Email : jcabrera@temsadiamond.com Website : www.temsadiamond.com

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Wire & Cable ASIA – March/April 2007