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Graphite Electrode Manufacturing Process
Graphite electrode uses petroleum coke and needle coke as the main raw materials for manufacturing process. It is a high-temperature-resistant conductive material made through calcination, kneading, shaping, roasting, graphitization and machining. It is mainly used for electric arc furnace (eaf) steelmaking.
Graphite Electrode Usage Guide
Graphite Electrode Surface Quality
| Point | Requirement |
|---|---|
| 1. | Graphite electrodes should have a smooth surface with a maximum of two pieces or voids and no transverse cracks. If there are longitudinal cracks, they should be no wider than 0.3mm-1.0mm, and their combined length should not exceed 5% of the electrode’s circumference, with a limit of two cracks. |
| 2. | Regarding more than two pieces or voids. Graphite electrodes manufacturer ensures that the width is less than one-tenth of the circumference of the electrode. And the length is less than one-third of the length of the electrode. |
| 3. | The nipple, the nipple hole, and the electrode surface within 100mm from the bottom of the hole are not allowed to have voids and cracks. |
| 4. | There should be no more than one missing block on the thread of the nipple and the nipple hole. And the length should not be greater than 30mm. |
Note: Please check and accept your graphite electrodes and nipples according to electrode surfaces after receiving the goods to ensure their quality.
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