WIRE SELECTION GUIDE
GISCO COBRA CUT FAMILY
The coated wire electrode series COBRA® CUT was developed with AGIE for EDM machines. They are suitable for a number of different machine models and for practical applications.
GISCO COBRA CUT Soft Brass Core/Tensile strength 70,000 psi
These zinc-coated wire electrodes were initally produced for AGIE for their first AC machines. Due to itselongation, it is particularly suitable for hih tapering. It has a limited suitability for machine models with automatic water-jet threading.
GISCO COBRA CUT A Hard Brass Core/Tensile strength 130,000 psi
This hard, zinc-coated wire electrode is especially suitable for machines with automatic threaders. Due to its excellent straightness and precision, it guarantees very good surface qualitites and allows precision cuts and fine detail with the highest reliablitity in automatic operations (particularly with .003", .004", and .006" diameter wires). With this wire, steep tapers cuts are possible only to a limited extent, except on the following AGIE mchine models for which it is specified: AC 100, 200, 300, 100D, 200D, and 300D.
GISCO COBRA CUT B Soft/Tensile strength 65,.000 psi
The special CUMg core of this electrode provides high electrical conductivity. Its rougher, oxidized surface benefits flushing conditions and is advatageous for the cutting of tall work pieces (>4"). Recommended for fast cutting of graphite and aluminum alloys. This wire is suitable for tapering to 200, but has limited capability for skim cutting and automatic wire threading. It is specified for the following AGIE models: AC 100, 200, 300, 100D, 200D, and 300D.
GISCO COBRA CUT D 1/2 Hard/Tensile strength 115,000 psi
This wire electrode has been developed for EDM machines with high-powered generators. It has a high thermal and electrical conductivity due to its special coating. It consists of two CuZn alloys (brass-on-brass), and is therefore suitable for speed cutting as well as for precision contour cutting. It can be used on machines with automatic threading. Tapered cuts (>7º) are possible only to a limited extent, except on the following AGIE machine models for which this wire is specified: AC 100D, 200D, and 300D.
GISCO COBRA CUT S 1/2 Hard/Hard Brass Core/Tensile strength 115,000 psi
This wire electrode guarantees highest cutting rates on the latest high-power EDM machines. As an improvement of the COBRA® CUT Type D, the thicker diffusion coat provides better cutting performance. It is most suitable for use in high-volume production EDM, tool and die making, and for thick workpieces. It is suitable for automatic threading and is specified for AGIE AC Sprint machines.
GISCO COBRAS CUT W Soft/Tensile strength 62,700 psi
This diffuison-annealed wire is designed to deliver the high productivity of Cobra® Cut D with the high elongation of BroncoCut 390 wire. Suitable to taper cuts up to 45°.
GISCO TOPAS FAMILY
TOPAS® is the first gamma phase wire from Berkenhoff which can be universally used on all standard EDM machines and achieves excellent cutting rates with high precision and surface quality. Economical production processes demand ever increasing removal rates. Our new TOPAS® electrodes meet these most exacting requirements thanks to their special coating. They cut up to 50% faster than plain wires. In comparison with "hot-dipped" wires, the TOPAS® EDM wires achieve a significantly higher cutting rate. The also offer better fine finishing characteristics compared to diffusion annealed wires. And so the major performance criteria are met without compromise: high precision at fast cutting rates with high surface quality at the workpiece.
GISCO TOPAS S Soft/Tensile strength 70,000 psi
TOPAS® S is especially suited for tpaer cutting with reliable edge-finding.
GISCO TOPAS H Hard/Tensile strength 115,000 psi
With its high tensile strength, type H is particularly suited for machines which require straightened wires for threading. A crucial advantage is the universal usability of the TOPAS® EDM wires on all conventional EDM machines with existing standard technologies. This allows considerable performance advantages without involving extra time and costs for reprogramming.
GISCO BRONCO CUT FAMILY
This coated EDM wire series BRONCO CUT® was initially developed for the special application on CHarmilles Technologies EDM machines, it also meets the particular threading requirements of this manufacturer. The manufacturer of Charmilles is introducing this type series on the market withthe identification"SW-....".
GISCO BRONCO CUT Soft/Tensile strength 65,000 psi
This zinc-coated copper EDM wire is designed for compatibility with the annealing and calibration devices of earlier Charmilles machines. These are CHarmilles F series machines (420, 430, 431, and 453) CHarmilles CH series machines (452, 552) and ANdrew machines. This wire can be used on theses machines for various applications; however, they are suitable for precision cutting only to a limited extent.
GISCO BRONCO CUT X Soft/Tensile 72,000 psi
This high-performance, multipurpse EDM wire with a special zinc-rich coating is suitable for precision cutting as well as hihg-speed cutting. Excellent automatic threading reliablity except for the following Charmilles machines Robofil 100 and 1000 series. Taper cutting (>7°) only to a limited degree.
| 
