Many of us got to know steel. We employ it within your everyday living. But ever wondered how you can~the way to~tips on how to~the best way to~ways to produce it? And what does it decide to use produce it? Simply the steel is made in a big factory which is cooked in a giant stove called furnace. As well as the cooking itself takes so many ingredients inside.
The Blast Furnace and Electric Arc Furnace methods would be the two major methods for producing iron and steel products. Scrap melting may be the major process utilizing Electric Arc Furnaces. Recently, industry competition has grown to be increasingly intense, elevating the requirement of a much more efficient melting process. Capacities of the transformers increasingly becoming larger and electric furnaces are increasing larger worldwide. With this manufacturing environment, graphite materials who have durability for larger-power operation are required far more for your use as Graphite Electrode (GE).
GE are produced from carbon. Carbon can be 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 linked to organic matter and life activity. Manufacturing excellent graphite electrodes requires quality materials which might be strictly selected.
Graphite includes a higher heat transfer rating, resistance to higher temperatures, and possesses more strength against thermal shock than other materials. Moreover, it excels in machinability to meet the needs for any broader array of dimensions. Thus, graphite could be the optimum material for scrap-melting electrodes.
GE are often consumed at high temperatures as a result of reaction with oxygen to become CO, CO2. The oxidation of electrodes starts at 500oC and accelerates its speed at 800oC (inside the furnace). Use of graphite electrodes by sublimation occurs at 3400o. The pace of sublimation is proportional for the increase of current density.
Meanwhile, utilization of quality GE leads to contributions to saving energy and environmental conservation. Electric arc furnaces, together with the main aim of recycling steel scraps, boost 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 standard sizes for graphite electrodes come from diameter 10″ (inch) to 30″(inch) and from length of 60″(inch) to 110″(inch). The weights are which range from 123 Kgs (10″ x 60″) to 2060 Kgs (30″ x 110″).
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