Search engine for touristic excursions to any place in the world We all have to know steel. We use it inside your everyday living. But ever thought about how you can produce it? And what does it decide to try produce it? Fundamentally the steel is produced in the big factory which is cooked inside a giant stove called furnace. As well as the cooking itself takes numerous ingredients in it.
The Blast Furnace and Electric Arc Furnace methods will be 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 need for a more efficient melting process. Capacities with the transformers are becoming larger and electric furnaces are increasing larger worldwide. With this manufacturing environment, graphite materials which have durability for larger-power operation are required much more for your use as Graphite Electrode (GE).
GE are made of carbon. Carbon can be a nonmetal element having an atomic variety of 6 along with the atomic symbol “C”. Carbon may be the base of organic chemistry, closely associated with 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 many other materials. Moreover, it excels in machinability to fulfill the needs to get a broader array of dimensions. Thus, graphite may be the optimum material for scrap-melting electrodes.
GE can be consumed at high temperatures as a result of reaction with oxygen to get CO, CO2. The oxidation of electrodes starts at 500oC and accelerates its speed at 800oC (inside furnace). Consumption 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 brings about contributions to saving energy and environmental conservation. Electric arc furnaces, together with the main aim of recycling steel scraps, promote reuse of steel products.
Production organization of graphite electrodes may be divided as 10 stages the next:
Raw material transporting
Kneading
Extruding
Baking
Pitch Impregnation
Re-Baking
Graphitization
Machining
Inspection
Shipment
The conventional sizes for graphite electrodes originate from diameter 10″ (inch) to 30″(inch) and from length of 60″(inch) to 110″(inch). The weights are starting from 123 Kgs (10″ x 60″) to 2060 Kgs (30″ x 110″).
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