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Information You Should Be Informed About Graphite Electrode And How Is It Linked To The Steel Making Process?



We all need to know steel. We use it within your everyday life. But ever wondered how to produce it? As well as what should it take to produce it? This is the steel is made in the big factory and it is cooked in the giant stove called furnace. And also the cooking itself takes a lot of ingredients inside.





The Blast Furnace and Electric Arc Furnace methods include the two major approaches for producing iron and steel products. Scrap melting may be the major process utilizing Electric Arc Furnaces. Recently, industry competition has become increasingly intense, elevating the requirement for a more efficient melting process. Capacities with the transformers are receiving larger and electric furnaces are growing larger worldwide. With this manufacturing environment, graphite materials that have durability for larger-power operation are essential much more to the use as Graphite Electrode (GE).

GE are made from carbon. Carbon is a nonmetal element by having an atomic number of 6 and also the atomic symbol "C". Carbon is the base of organic chemistry, closely in connection with organic matter and life activity. Manufacturing excellent graphite electrodes requires quality materials which might be strictly selected.

Graphite carries a higher heat transfer rating, capacity higher temperatures, and has more strength against thermal shock than many other materials. Moreover, it excels in machinability in order to meet the requirements for the broader range of dimensions. Thus, graphite is the optimum material for scrap-melting electrodes.

GE are typically consumed at high temperatures because of the reaction with oxygen to become CO, CO2. The oxidation of electrodes starts at 500oC and accelerates its speed at 800oC (in the furnace). Utilization of graphite electrodes by sublimation occurs at 3400o. The rate of sublimation is proportional towards the increase of current density.

Meanwhile, usage of quality GE results in contributions to saving energy and environmental conservation. Electric arc furnaces, using the main objective of recycling steel scraps, market reuse of steel products.

Production organization of graphite electrodes could be divided as 10 stages the following:

Raw material transporting
Kneading
Extruding
Baking
Pitch Impregnation
Re-Baking
Graphitization
Machining
Inspection
Shipment
The common sizes for graphite electrodes originate from diameter 10" (inch) to 30"(inch) and from period of 60"(inch) to 110"(inch). The weights are including 123 Kgs (10" x 60") to 2060 Kgs (30" x 110").


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