Search engine for touristic excursions to any place in the world We all got to know steel. It’s used by us within your everyday activity. But ever wondered how you can~the way to~tips on how to~the best way to~ways to produce it? Along with what does it decide to use produce it? Simply the steel is produced in a big factory and it is cooked inside a giant stove called furnace. And the cooking itself takes numerous ingredients in it.
The Blast Furnace and Electric Arc Furnace methods would be the two major approaches for producing iron and steel products. Scrap melting is the major process utilizing Electric Arc Furnaces. Recently, industry competition is now increasingly intense, elevating the necessity for a more efficient melting process. Capacities with the transformers are becoming larger and electric furnaces are increasing larger worldwide. In this manufacturing environment, graphite materials which have durability for larger-power operation are needed a lot more for that use as Graphite Electrode (GE).
GE are manufactured from carbon. Carbon is really a nonmetal element by having an atomic amount of 6 as well as the atomic symbol “C”. Carbon could be the base of organic chemistry, closely associated with organic matter and life activity. Manufacturing excellent graphite electrodes requires quality materials which can be strictly selected.
Graphite features a higher heat transfer rating, effectiveness against higher temperatures, and it has more strength against thermal shock than other materials. Moreover, it excels in machinability to fulfill the needs for the broader selection of dimensions. Thus, graphite is the optimum material for scrap-melting electrodes.
GE are often 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 (within the furnace). Usage of graphite electrodes by sublimation occurs at 3400o. The speed of sublimation is proportional towards the increase of current density.
Meanwhile, usage of quality GE ends in contributions to saving energy and environmental conservation. Electric arc furnaces, using the main aim of recycling steel scraps, promote reuse of steel products.
Production organization of graphite electrodes may be divided as 10 stages as follows:
Raw material transporting
Kneading
Extruding
Baking
Pitch Impregnation
Re-Baking
Graphitization
Machining
Inspection
Shipment
The typical sizes for graphite electrodes originate from diameter 10″ (inch) to 30″(inch) and from amount of 60″(inch) to 110″(inch). The weights are ranging from 123 Kgs (10″ x 60″) to 2060 Kgs (30″ x 110″).
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