Sep. 27, 2020
Steelmaking process and how to avoid graphite electrode fracture?
Let Graphite Electrodes Exporter bring you a look! The following solutions can be taken during the steelmaking process, which can effectively avoid electrode breaking and tripping: (1) The electrode phase sequence is correct and counterclockwise. Graphite rods are often used as electric heating elements in high-temperature vacuum furnaces. The maximum operating temperature can reach 3000℃. It is easy to oxidize at high temperatures. Except for vacuum, it can only be used in a neutral or reducing atmosphere. Its thermal expansion coefficient is small, thermal conductivity is large, resistivity is (8~13)×10-6 Ω·m, processability is better than SiC, MoSi2 rod, high temperature resistance, extreme cold and extreme heat resistance, good price Cheaper. Graphite block is a kind of artificial graphite, and artificial graphite is made by artificial heating of coke products. Generally, if it is purified to make high-purity or carbon fiber, the added value is high.
Graphite electrodes are mainly made of petroleum coke and needle coke as raw materials, coal tar pitch as a binder, and are made by calcination, batching, kneading, pressing, roasting, graphitization, and machining. It releases electric energy in the form of electric arc in an electric arc furnace. The conductors used for heating and melting the charge can be classified into ordinary power, high power and ultra-high power according to their quality indicators. Graphite electrodes mainly include four types of ordinary power graphite electrodes, anti-oxidation coating graphite electrodes, high power graphite electrodes and ultra-high power graphite electrodes. The scrap steel is evenly distributed in the furnace, and large pieces of scrap steel are placed at the bottom of the furnace as much as possible. (3) The presence of non-conductive materials to avoid waste. (4) The electrode column is centered with the furnace top hole, and the electrode column is parallel. The furnace top hole wall should be cleaned frequently to avoid the accumulation of residual research steel slag material and force the electrode to be broken. (5) Good condition furnace tilt system, the tilt electric furnace remains stable. (6) The electrode holder prevents students from pinching the joints between the electrodes and the electrode material joint holes. (7) Choose high-strength and high-precision joints. 8. Apply appropriate torque when connecting the electrodes. (9) Prevent mechanical damage to the electrode hole threads and joint threads before and during the connection. (10) The electrode holes and joints can prevent steel slag or foreign objects from being embedded in society and affecting the screw connection
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