Search engine for touristic excursions to any place in the world Many of us must know steel. It’s used by us inside your everyday routine. But have you noticed how you can~the way to~tips on how to~the best way to~ways to produce it? And what can it take to produce it? Basically the steel is made in a big factory and it’s also cooked in a giant stove called furnace. And the cooking itself takes so many ingredients inside it.
The Blast Furnace and Electric Arc Furnace methods would be the two major techniques for producing iron and steel products. Scrap melting will be the major process utilizing Electric Arc Furnaces. Recently, industry competition has grown to be increasingly intense, elevating the requirement for an infinitely more efficient melting process. Capacities in the transformers are becoming larger and electric furnaces are growing larger worldwide. On this manufacturing environment, graphite materials who have durability for larger-power operation are expected considerably more for the use as Graphite Electrode (GE).
GE are produced from carbon. Carbon is a nonmetal element with the atomic number of 6 and the atomic symbol “C”. Carbon could be the base of organic chemistry, closely related to organic matter and life activity. Manufacturing excellent graphite electrodes requires quality materials which can be strictly selected.
Graphite carries a higher heat transfer rating, resistance to higher temperatures, and has more strength against thermal shock than other materials. Moreover, it excels in machinability to meet the requirements for a broader array of dimensions. Thus, graphite will be the optimum material for scrap-melting electrodes.
GE are often consumed at high temperatures due to the reaction with oxygen to get CO, CO2. The oxidation of electrodes starts at 500oC and accelerates its speed at 800oC (within the furnace). Utilization of graphite electrodes by sublimation occurs at 3400o. The rate of sublimation is proportional for the increase of current density.
Meanwhile, usage of quality GE brings about contributions to saving energy and environmental conservation. Electric arc furnaces, together with the main purpose of recycling steel scraps, market reuse of steel products.
Production organization of graphite electrodes may 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 are 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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