Many of us got to know steel. We employ it within your everyday routine. But have you ever wondered the way to produce it? As well as what should it decide to use produce it? Basically the steel is made within a big factory which is cooked within a giant stove called furnace. And also the cooking itself takes numerous 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 is the major process utilizing Electric Arc Furnaces. Recently, industry competition has grown to be increasingly intense, elevating the requirement for a more efficient melting process. Capacities of the transformers are becoming larger and electric furnaces are growing larger worldwide. With this manufacturing environment, graphite materials who have durability for larger-power operation are needed far more for your use as Graphite Electrode (GE).

GE are produced from carbon. Carbon can be a nonmetal element by having an atomic variety of 6 along with the atomic symbol “C”. Carbon will be the base of organic chemistry, closely related to organic matter and life activity. Manufacturing excellent graphite electrodes requires quality materials which are strictly selected.

Graphite has 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 to fulfill certain requirements to get a broader range of dimensions. Thus, graphite may be the optimum material for scrap-melting electrodes.

GE are easily consumed at high temperatures because of the reaction with oxygen being CO, CO2. The oxidation of electrodes starts at 500oC and accelerates its speed at 800oC (within the furnace). Use of graphite electrodes by sublimation occurs at 3400o. The rate of sublimation is proportional towards the increase of current density.

Meanwhile, usage of quality GE ends in contributions to saving energy and environmental conservation. Electric arc furnaces, with all the main purpose of recycling steel scraps, market reuse of steel products.

Production organization of graphite electrodes may be divided as 10 stages the subsequent:

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 starting from 123 Kgs (10″ x 60″) to 2060 Kgs (30″ x 110″).

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