Kakšne so značilnosti grafitnih elektrod, ki se uporabljajo v EDM?

Professional graphite electrode equipment has fast processing speed, particularly outstanding precision machining speed, no machining burrs, and high strength. For ultra-high (50-90mm) and ultra-thin (0.1-0.5mm) electrodes, they are not easily deformed during processing. In many cases, products need to have good textured effects, which requires making graphite electrodes as integral male electrodes as much as possible. However, there are various hidden corners in the production of integral male electrodes. Due to the easy to repair nature of graphite, this problem is easily solved and the number of electrodes is greatly reduced, which copper electrodes cannot achieve.

Zaradi boljše prevodnosti grafita kot bakra je njegova hitrost praznjenja 2-3-krat hitrejša od bakra in lahko prenese večje tokove med praznjenjem, zaradi česar je ugodnejši za grobo elektroerozijsko obdelavo. Hkrati je pri isti prostornini teža grafitne elektrode 1/5 mase bakrene elektrode, kar močno zmanjša obremenitev EDM, kar je izjemno ugodno za izdelavo velikih elektrod in celotnih moških elektrod. Temperatura sublimacije grafita je 4200 ℃, kar je 3-4 krat več kot pri bakru (temperatura sublimacije bakra je 1100 ℃). Pri visokih temperaturah je deformacija izjemno majhna (1/3-1/5 bakra pri enakih električnih pogojih) in se ne zmehča. Lahko učinkovito in učinkovito prenese energijo praznjenja na obdelovanec z nizko porabo. Zaradi povečane trdnosti grafitnih elektrod pri visokih temperaturah lahko učinkovito zmanjšajo izgube pri praznjenju (izgube grafita so 1/4 bakra), kar zagotavlja kakovost obdelave.

Therefore, many mold factories are gradually transitioning to graphite electrode EDM machining in order to improve the competitiveness of enterprises and products in the market (quality, cost, delivery time, and the development of new products determine the competitive advantage of enterprises)!