Chemical Index of Graphite Electrodes UHP with Nipples

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Specifications 

Chemical Index of Graphite Electrodes UHP with Nipples 
1.Diameter: 200 to 700mm 
2.Length: 1600 to 2400mm 
3.Nipple:3-4TPI

 

Chemical Index of Graphite Electrodes UHP with Nipples

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

Chemical Index of Graphite Electrodes UHP with Nipples

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

Chemical Index of Graphite Electrodes UHP with Nipples

Chemical Index of Graphite Electrodes UHP with Nipples

Chemical Index of Graphite Electrodes UHP with Nipples

 

FAQ:

Chemical Index of Graphite Electrodes UHP with Nipples

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

Chemical Index of Graphite Electrodes UHP with Nipples 

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:How about graphite electrode high-temperature oxidation resistant coating?
Can be used, temperature characteristics of nano composite ceramic coating is more stable, and nano composite ceramic nano high temperature oxidation resistant coatings of different graphite products according to the use conditions, can the temperature of 1600 degrees, forming a dense coating on graphite coated with rust, corrosion, high temperature resistance, oxidation resistance, wear resistance and other properties.
Q:What is the reason that the current cannot be increased when the graphite electrode is used for anode electrolysis?Add calcium chloride and sodium bicarbonate into electrolytic water
The reason is that the resistance increases continuously, the number of ions is limited, and the conductivity is limited
Q:Graphitized coke, graphite, broken, mixed up, how to export?
The graphite powder is soft, black and gray, greasy and polluting paper. Hardness is 1~2, along the vertical direction with the increase of impurities, its hardness can be increased to 3~5. The specific gravity is 1.9 ~ 2.3. Under isolated oxygen conditions, the melting point is above 3000 degrees Celsius and is one of the most refractory minerals. At room temperature, the chemical properties of stone toner are relatively stable, insoluble in water, dilute acid, dilute alkali and organic solvents. The material has high temperature resistance and conductivity, and can be used as refractory materials, conductive materials, wear-resistant and lubricating materials.
Q:How much does a graphite electrode cost about a ton?
According to purity and quality, the price is 1-6 tons / tonDo not calculate the processing cost
Q:Why use platinum ferroalloy instead of iron as electrode?
Silica (Silica) is widely used in paint, ink, plastic, rubber and cosmetics, are often added to increase the performance of silica, such as oil absorption, extinction, strengthen the mechanical... Etc., and can reduce the cost of...
Q:Is the anode of electrolytic water suitable for ordinary titanium wires?
The graphite is cheaper and easier to obtain, but the carbon electrodes sold in the general market are not very pure at most times. The experiment is done for a period of time, and the carbon is inexplicably broken, especially if you need to work for a long time. So, if your graphite electrode is of good quality, it's still graphite.
Q:What is the composition of petroleum coke and what is its use?
Petroleum coke can be used for the manufacture of graphite, smelting and chemical industries, depending on its quality. For example, the quality of cooked sweet coke coke, mainly used in the manufacture of ultra high power graphite electrode and some special carbon products; needle coke in steelmaking industry is an important material new technology development of EAF steelmaking.
Q:The difference between graphite electrode and graphite rod
The two materials are different.Graphite electrode is mainly in the petroleum coke and needle coke, coal tar pitch as binder, calcination, mixing, kneading, pressing, baking and graphitization, and made the processing machine, is a conductor in an electric arc furnace to form arc release electricity for heating and melting of the charge, according to the quality index level, can is divided into ordinary power, high power and ultra high power.
Q:How should carbon deposits be treated?
It is very necessary to clean the throttle valve, clean the nozzle, and clean the carbon in the engine cylinder! However, in order to reduce the trouble of cleaning, it is best to join the regular application of graphene Moqi additive in lubricating oil for engine.
Q:Graphite powder produced by graphite electrode and what we usually call graphite is a kind of thing?
Graphite electrode is mainly in petroleum coke, coke as raw material

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