We all have to know steel. It’s used by us in your everyday routine. But have you noticed how you can produce it? As well as what can it take to produce it? This is the steel is made in the big factory which is cooked within a giant stove called furnace. And also the cooking itself takes numerous ingredients in it.
The Blast Furnace and Electric Arc Furnace methods would be the two major techniques for producing iron and steel products. Scrap melting may be the major process utilizing Electric Arc Furnaces. Recently, industry competition is becoming increasingly intense, elevating the requirement of a lot more efficient melting process. Capacities in the transformers are receiving larger and electric furnaces are increasing larger worldwide. Within this manufacturing environment, graphite materials which may have durability for larger-power operation are required considerably more for your use as Graphite Electrode (GE).
GE are manufactured from carbon. Carbon is often a nonmetal element having an atomic amount of 6 as well as the atomic symbol “C”. Carbon will 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 features a higher heat transfer rating, effectiveness against higher temperatures, and contains more strength against thermal shock than many other materials. Moreover, it excels in machinability in order to meet what’s needed for a broader selection of dimensions. Thus, graphite could be the optimum material for scrap-melting electrodes.
GE are often consumed at high temperatures due to reaction with oxygen to become CO, CO2. The oxidation of electrodes starts at 500oC and accelerates its speed at 800oC (inside the furnace). Usage of graphite electrodes by sublimation occurs at 3400o. The pace of sublimation is proportional towards the increase of current density.
Meanwhile, using quality GE brings about contributions to saving energy and environmental conservation. Electric arc furnaces, using the main function of recycling steel scraps, market 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 conventional sizes for graphite electrodes originate from diameter 10″ (inch) to 30″(inch) and from duration 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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