RP HP UHP Electric Arc Furnace Electrode for Smelting Steel

Product Description

     Graphite Electrode is a kind of high temperature resistant graphite conductive material, which is made of petroleum coke and pitch coke as aggregate and coal tar pitch as binder through calcination, crushing and grinding of raw materials, proportioning, kneading, moulding, roasting, impregnation, graphitization and mechanical processing. It is called artificial graphite electrode (abbreviated as graphite electrode). Natural graphite electrode prepared from natural graphite as raw material
(1) for arc steelmaking furnaces

(2) used in ore smelting electric furnace

(3) used in resistance furnace

(4) for preparing special shaped graphite products.

 

Product Name	RP HP UHP Electric arc furnace electrode for smelting steel
Nipple Type	3TPI/4TPI/T4L
Length	1800mm/2000mm/2200mm/2400mm
Current Load	37000A-57000A
Application	>HP Graphite electrode for submerged arc furnace. >HP graphite electrode for AC arc furnace. >HP graphite electrode for DC arc furnace.
Product Advantage	>Anti-oxidation treatment for longevity. >High-purity,high-density,strong chemical stability. >High machining accuracy,good surface finishing. >High mechanical strength,low electrical resistance. >Resistant to cracking & spalling. >High resistance to oxidation and thermal shock.

Features:
At room temperature, the chemical properties of elemental carbon are relatively stable, insoluble in water, dilute acid, dilute alkali and organic solvents; it reacts with oxygen at different temperatures to produce carbon dioxide or carbon monoxide; only fluorine can react directly with elemental carbon in halogen; under heating, elemental carbon is more easily oxidized by acid; at high temperature, carbon can also react with many other substances. Metals react to form metal carbides. Carbon is reducible and can be smelted at high temperatures.

Graphite is a crystalline mineral of carbonaceous elements. Its crystal lattice is hexagonal layered structure. The distance between each network layer is 340pm, and the spacing of carbon atoms in the same network layer is 142pm. It belongs to six square crystal system with complete lamellar cleavage. The cleavage surface is mainly composed of molecular bonds, and its attraction to molecules is weak, so its natural floatability is very good.

Graphite, diamond, carbon 60 and carbon nanotubes are the elements of carbon, and they are allotropic to each other.
 

Graphite Electrode Specification And Allowable Deviation
Nominal Diameter		Actual Diameter		Nominal Length	Permissible Deviation
mm	inch	max	min	mm	Short Length
300	12	307	302	1600 1800	Length	Maximum	Minimum
350	14	357	352		±100	-100	-275
400	16	409	403
450	18	460	454
500	20	511	505	1600/1800/ 2000/2200 1800/2000/ 2200	±100	-100	-275
550	22	556	553
600	24	613	607

 

Permissible Current Load and Current Density Of Graphite Electrodes
Nominal  Diameter	Ordinary		High Power		Super High
mm	Current  Capacity(A)	Current  Density A/cm2	Current  Capacity(A)	Current  Density A/cm2	Current  Capacity(A)	Current  Density A/cm2
200	5000-6900	15-21	5500-9000	18-25
250	7000-10000	14-20	8000-13000	18-25	9200-15100	21-30
300	10000-13000	14-18	13000-17400	17-24	13000-22000	20-30
350	13500-18000	14-18	17400-24000	17-24	20000-30000	20-30
400	18000-23500	14-18	21000-32000	16-24	25000-40000	19-30
450	22000-27000	13-17	25000-40000	15-24	32000-45000	19-27
500	25000-32000	13-16	30000-48000	15-24	38000-55000	18-27
550	32000-40000	13-16	37000-57000	15-23	48000-60000	18-24
600	38000-47000	13-16	44000-67000	15-23	52000-72000	18-24
700	45000-54000	13-16	54000-73000	15-23	62000-95000	18-24