What are the main factors affecting the lifespan of graphite electrodes?

The main factors affecting the lifespan of graphite electrodes typically include the following:

Physical wear: Graphite electrodes will wear due to mechanical forces during use. For example, in electrical discharge machining, the relative motion between the electrode and the workpiece will generate friction, leading to electrode wear.

Chemical corrosion: Graphite electrodes may react with chemicals in the surrounding environment, for example, in environments containing acidic or alkaline solutions, graphite electrodes may be corroded, thereby affecting their lifespan.

Electrochemical corrosion: In some electrochemical machining or electroplating processes, graphite electrodes may be corroded due to electrochemical reactions, which can also affect their service life.

Thermal stress: If graphite electrodes are subjected to drastic temperature changes during use, thermal stress may occur, leading to electrode cracking or damage.

Processing parameters: The current density, pulse width, working fluid, and other parameters of electric discharge machining can all affect the lifespan of graphite electrodes. Inappropriate processing parameters may lead to rapid electrode wear.

Storage and maintenance: Graphite electrodes may also be damaged during storage and handling, such as accidental situations such as collisions, falls, or moisture absorption caused by excessive humidity in the storage environment, which may affect their service life.

Manufacturing quality: The manufacturing quality of graphite electrodes, including the quality of raw materials, processing accuracy, etc., is also an important factor affecting their lifespan.

In order to extend the service life of graphite electrodes, it is usually necessary to start from the above aspects and take appropriate protective measures, such as improving the working environment, optimizing processing parameters, and improving the manufacturing quality of graphite electrodes.