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How To Solve The Tool Wear In Graphite Powder Processing

wallpapers Industry 2020-06-09

Although graphite powder is a very easy-to-cut material, the graphite material used as an EDM electrode (hot work die steel) must have sufficient strength to avoid damage during operation and EDM processing. The graphite electrode has wires compared to copper electrodes. The graphite is low consumption, fast processing speed, excellent machining performance, high processing accuracy, small thermal deformation, lightweight, comfortable surface treatment, high-temperature resistance, high processing temperature, and electrode bonding.

Although graphite is a very easy-to-cut material, the graphite material used as an EDM electrode (hot work die steel) must have sufficient strength to avoid damage during operation and EDM processing, and the electrode shape (thin-walled, small Rounded corners, sharp changes, etc. also put forward higher requirements on the grain size and strength of graphite electrodes, which results in graphite workpieces that are prone to chipping and tool wear during processing.

Tool wear is the most critical issue in the machining of graphite electrodes. The amount of wear not only affects the tool wear cost, processing time, and processing quality but also affects the surface quality of workpiece material processed by the electrode EDM, which is an essential parameter for optimizing high-speed machining. The main tool wear areas of graphite gun pole materials are the rake face and the flank face. On the rake face, the impact contact between the tool and the broken chip area produces impact abrasive wear, and the chips sliding along the tool surface create sliding friction and wear.

Tool materials, geometric angles, coatings, cutting edge strengthening and machining conditions play different roles in the tool life, and are indispensable and mutually reinforcing. A good graphite powder cutter should have a smooth graphite powder flute, a long service life, and can be deeply engraved and processed, which can save processing costs.


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Tag: Graphite Powder