Hebei Fengchao Import and Export Co., Ltd. is one of the most reliable manufacturers and suppliers of graphite electrode 500×2200mm in China. With a professional production team, we are able to meet the needs of the majority of our customers. If you're going to wholesale bulk graphite electrode 500×2200mm made in China, welcome to get pricelist from our factory.
Our Φ500×2200mm graphite electrode adopts an elongated single-body design to reduce the number of nipple connections during on-furnace assembly. The threaded holes of the electrode receive special anti-oxidation treatment to mitigate oxidative burnout of threads under erosion from arc flame and high-temperature flue gas. It maintains stable current-carrying performance under medium-to-high power loads. Suitable for flexible production conditions, it can be used in high-power AC electric arc furnaces as well as medium and large submerged arc furnaces, helping metallurgical plants cut down equipment failures caused by nipples.
The Φ500×2200mm graphite electrode is manufactured from extra-long cylindrical green blanks. Residual internal stress of blanks is strictly controlled after high-temperature treatment. Excellent axial thermal conductivity facilitates rapid heat dissipation along the electrode length and alleviates the risk of local overheating in the middle section of the electrode. Balanced mechanical strength and electrical performance enable it to withstand alternating working conditions of arc combustion and furnace embedding. Widely used for scrap steel smelting in high-power electric arc furnaces, and also applicable to ferrosilicon and silicomanganese alloy smelting in medium and large submerged arc furnaces, convenient for metallurgical enterprises with mixed production lines.
Our Φ500×2200mm graphite electrode adopts a custom composite raw material formula and long-blank low-stress process. Supported by dedicated long-size production lines and dual-condition inspection standards, it delivers balanced and stable performance, compatible with both EAF steelmaking and submerged arc furnace alloy smelting.
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FAQ
Q: Is the 2200mm elongated electrode prone to axial bending during high-temperature service?
A: We adopt a low-residual-stress graphitization process to greatly reduce the risk of axial bending. Nevertheless, uneven local heating caused by severe arc deflection shall be avoided in actual production.
Q: Is operational adjustment required when switching the Φ500×2200mm electrode between EAF steelmaking and ferroalloy submerged arc furnaces?
A: The product itself supports both working conditions. When switched to deep-buried submerged arc smelting, the operating current shall be appropriately reduced to lower the extra thermal load on the elongated blank.
Q: What impacts will the single elongated length bring to on-furnace assembly?
A: Since the single piece reaches 2200mm, the travel of the furnace hoisting equipment and the clearance height above the furnace opening need to be confirmed before installation. Its advantage lies in fewer nipples and shorter time for electrode connection and charging.
Q: What causes thread fatigue damage of long-size electrodes after repeated thermal cycling?
A: Repeated thermal expansion and contraction induced by frequent temperature fluctuations is the main cause. We optimize the thread chamfer structure to disperse local stress, relieve thread fatigue for production lines with frequent condition switching.
Q: Can nipple grades be selected for Φ500×2200mm electrodes according to different smelting production lines?
A: Yes. Standard-grade nipples or upgraded high-fatigue-resistance nipples are available. For plants alternating between steelmaking and ferroalloy production, high-fatigue-resistance nipples are strongly recommended.
Q: What key information should be provided for the inquiry of Φ500×2200mm graphite electrodes?
A: Please state purchase quantity, preferred nipple grade, primary smelting condition (steelmaking or ferroalloy), frequency of working condition switching and effective lifting height of the furnace hoisting equipment.
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