Most of us need to know steel. We use it in your everyday life. But ever thought about how you can produce it? Along with what will it decide to use produce it? Fundamentally the steel is made in a big factory which is cooked inside a giant stove called furnace. As well as the cooking itself takes so many ingredients inside.
The Blast Furnace and Electric Arc Furnace methods will be the two major approaches for producing iron and steel products. Scrap melting could be the major process utilizing Electric Arc Furnaces. Recently, industry competition is now increasingly intense, elevating the requirement for a lot more efficient melting process. Capacities in the transformers are getting larger and electric furnaces are increasing larger worldwide. Within this manufacturing environment, graphite materials who have durability for larger-power operation are required much more for your use as Graphite Electrode (GE).
GE are made of carbon. Carbon is really a nonmetal element by having an atomic variety of 6 and the atomic symbol “C”. Carbon could be the base of organic chemistry, closely linked to organic matter and life activity. Manufacturing excellent graphite electrodes requires quality materials that are strictly selected.
Graphite includes a higher heat transfer rating, resistance to 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 variety of dimensions. Thus, graphite is the optimum material for scrap-melting electrodes.
GE are often consumed at high temperatures due to reaction with oxygen being 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 rate of sublimation is proportional on the increase of current density.
Meanwhile, use of quality GE leads to contributions to saving energy and environmental conservation. Electric arc furnaces, with all 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 typical sizes for graphite electrodes come from diameter 10″ (inch) to 30″(inch) and from length 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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