Patented wire coating technology

Even though Bedra (a Berkenhoff brand) launched its new-generation TRIMPAC EDM wire in 2019, relatively few are aware that this novel coating technology carries a patent.

From the strengths of its classic wire generations, which include Cobracut, Broncocut and Topas, Bedra developed the new coating technology TRIMPAC, which stands for ‘triple impact sheath. Ultimately, the coating combines three effects. Firstly, the wire has a thin oxide layer that acts like a semiconductor and prevents faulty discharges, which improves cutting quality. Secondly, the increased zinc content of the sheath increases abrasion, while at the same time improving wear resistance. And last but not least, the surface features a special structure that has a positive effect on cutting performance and quality.

As a combined result of these three effects, wires with TRIMPAC coating technology achieve significantly higher cutting performance levels than the wires of its predecessors. TRIMPAC coating technology is available in Bedra’s new EDM high-performance wire generation, Gapstar ONE.

Through field tests and laboratory results, Bedra has shown that the use of Gapstar ONE in comparison with bare brass wire will result in cost savings of more than 37% for the same application. When using Gapstar ONE, considerably higher productivity is possible than with conventional EDM wire, thereby improving the capacity utilisation of EDM machines, says the company.

Factoring in wire costs, machine costs, wire consumption and cutting performance, the adoption of Gapstar ONE will prove that considerably higher productivity is possible compared with conventional EDM wire.

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