Graphite Electrodes UHP with Nipples for Electric Arc Furnace

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20 m.t.
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Specifications 

Graphite Electrodes UHP with Nipples for Electric Arc Furnace
1.Diameter: 200 to 700mm 
2.Length: 1600 to 2400mm 
3.Nipple:3-4TPI

 

Graphite Electrodes UHP with Nipples for Electric Arc Furnace

1. Grade: RP, HP, UHP, SHP, RPI

2. Diameter: 200 to 700mm at your choice.

3. Length: 1600 to 2400mm at your choice.

4. Nipple: 3-4 TPI

5. Fine mechanical strength and machining quality, low specific resistance, high temperature and oxidation resistance

6. Low price and timely delivery.

 

Feature

Graphite Electrodes UHP with Nipples for Electric Arc Furnace

Grades: RP, RPI, HP, SHP, UHP

 All graphite electrodes are offered with tapered nipples, i.e. 3 or 4 threads per inch, and meet the internationally accepted tolerances as per NEMA CG 1/ IEC 60239 / JIS R7201 standards. 

UHP 

Physical and chemical index

Item

Unit

Nominal   Diameter(mm)

YB/T4088-2000

Typical   Values

Industry   Standard

300-400

450-550

350-550

Resistance

Electrode

ohm

≤6.2

≤6.5

4.6-6.2

Nipple

≤5.5

≤5.5

3.5-4.5

Bending   Strength

Electrode

Mpa

≥10.5

≥10.0

≥11.0

Nipple

≥16.0

≥16.0

≥18.0

Elastic   Modulus

Electrode

Gpa

≤14.0

≤14.0

≤13.0

Nipple

≤18.0

≤18.0

≤17.0

Density

Electrode

g/cm3

≥1.65

≥1.64

1.65-1.72

Nipple

≥1.72

≥1.70

1.75-1.82

Ash   content

Electrode

%

≤0.3

≤0.3

≤0.3

Nipple

CTE(100-600)

Electrode

10-6/C

≤1.5

≤1.5

1.20-1.40

Nipple

≤1.4

≤1.4

1.10-1.30

Image

Graphite Electrodes UHP with Nipples for Electric Arc Furnace

Graphite Electrodes UHP with Nipples for Electric Arc Furnace

Graphite Electrodes UHP with Nipples for Electric Arc Furnace

 

FAQ:

Graphite Electrodes UHP with Nipples for Electric Arc Furnace

1. Why it is essential to select electrode carefully for each particular furnace?

The primary factor is the maximum current intensity of the furnace. However, other conditions should also be considered, such as the characteristics of the furnace, type of charge, tap to tap time, oxygen blowing, mechanical requirement, furnace regulation, etc.Generally, specifications for electrodes of most grades have been standardized. Variation of physical characteristics with temperature, however, should be taken into account whenever using the electrodes.

Precautions to the use of graphite electrodes

2. Why it is essential to not to fit electrodes and nipples made by different manufacturers together?

The capacities of the furnace and the transformer determine whether the grade and diameter of the electrode are suitable to the furnace or not.

In order to prevent the electrode column from being hit by the collapsed furnace loads, large and heavy scraps should be loaded onto the bottom of the furnace. Do not put significant quantity of insulating materials such as lime and so on just under the electrode column, otherwise it would be difficult to power on the electrode column, or even break it.

electrode column may be hurt when it moves up and down if the furnace cover is out of the position.

When making a connection, lost or damaged pitch plugs must be replaced.

The reason must be found out if a gap appears between two electrodes after connection. The electrode column can only be loaded after the gap being eliminated.

The electrode column must be strictly perpendicular to the ground lever. Oblique column is not allowed during operation.

The holder must be placed between the two safety marks on the top electrode, otherwise the column may be broken.

Generally, different manufacturers may make their electrodes with different raw materials and processes, therefore the physical and chemical properties of their electrodes are usually different. Please do not fit electrodes and nipples made by different manufacturers together.

 

Applications

Graphite Electrodes UHP with Nipples for Electric Arc Furnace

Electrodes in electric arc furnace and ladle refining furnace for steel making;

Electrodes in electric smelting furnace for producing industrial silicon, yellow phosphorus, corundum and so on.

 


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Q:What is the role of the Pt electrode? What is the difference between the graphite electrode and the graphite electrode?
Carbon electrodes, however, are less likely to be less controllable because of their microstructure, or have some effect on the electric field, if they are sensitive signals
Q:What about graphite electrodes for steel mills?
Hebei North graphite electrode factory produces various specifications of graphite electrode, with low resistance, high density, small ash, and so on, so that less tons of steel-making, quality is good
Q:How about graphite electrode high-temperature oxidation resistant coating?
Heat resistant coating is generally able to withstand 300 degrees below the temperature, commonly used aluminum heat-resistant paint, high temperature resistance can withstand higher temperatures, such as 800 degrees or more, commonly used silicone heat-resistant paint
Q:Can Naiduo high temperature graphite
Graphite cut gasket is from pure graphite plate drilling or cutting and it has good corrosion resistance, high / low temperature, compression elasticity and high strength good, complex geometric gasket circular is widely used in all kinds of pipes, valves, pumps, pressure vessels, heat exchanger, and condenser generator, air compressor, exhaust pipe, refrigerator etc..
Q:Does the silicon carbide heat plant require a fine structure graphite electrode? What kind of graphite products do you need?
Silicon carbide graphite is very famous for its high hardness and wear resistance. It is generally used in high wear resistance machinery industry and high wear resistant sealing industry.
Q:Thermal expansion coefficient of graphite
The graphite electrode in the thermal expansion coefficient is related with the diameter of the graphite electrode, you have what is the expansion coefficient of specific diameter range not to say it, I put the general heat on high power graphite electrode national Ministry of metallurgical industry YBT/4089--2000 give you a lower coefficient of expansion. For reference only
Q:Electrolytic salt water why use iron as a cathode, all with graphite can not?
The iron electrode is easier to be installed in the electrolytic cell, which is more convenient than the graphite electrode, and the density of the graphite is small. After being adsorbed by hydrogen, the graphite is easy to float up, and the density of the iron is larger. This problem does not exist in the.5
Q:Classification, uses and manufacturers of graphite electrodes
Classification of graphite electrodes:(1) common power graphite electrode (RP), (2) high power graphite electrode (HP), (3) quasi ultra high power graphite electrode (SHP), (4) ultra high power graphite electrode (UHP) Note: poly carbon classification method
Q:What is the difference between pyridine type nitrogen and graphite type nitrogen?
High purity graphite is said to produce graphite electrode, ash is very low, generally below 10 million.
Q:How do graphitized electrodes differentiate between high power and low power?
In electrolysis industry, using graphite anode plate as the anode has a history of more than 100 years, the metal anode is in recent decades, the research and application of metal anode in China late last century, only in 70s the technology related to the research and experiment of metal anode, anode on electrolysis industry, mainly through the silver (2%) (0.5%): low silver lead silver alloy, lead and silver tin antimony alloy, lead calcium alloy and lead silver alloy adding nucleating agents and several stages.

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