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:What kinds of carbon are there?
Graphite electrode class can be divided into ordinary power graphite electrode according to the allowable current density. High power electrode and ultra high power electrode.
Q:The difference between graphite electrode and graphite rod
Graphite rod for non metal products, as carbon arc gouging cutting process in an essential pre welding cutting supplies, is composed of carbon and graphite with appropriate adhesive, through the extrusion, the temperature of 2200 DEG C after baking rotary plating a layer made from copper, high temperature resistance, good electrical conductivity, is not easy fracture, suitable for metal cutting into required shape.
Q:Iron and graphite as electrodes and Nacl as electrolyte solutions. Why do they produce electric current? Graphite and iron react not with solution, can they be connected by wires?
Because the metal activity order form sodium potassium calcium magnesium aluminum, zinc and tin lead (hydrogen), mercury copper silver platinum, iron in the front row because of water water hydrogen, ionized hydrogen ions by iron replacement
Q:The reason why graphite is used as electrode
Good chemical stabilityGraphite has good chemical stability at room temperature. It can resist acid, alkali and organic solvent.
Q:Graphite powder produced by graphite electrode and what we usually call graphite is a kind of thing?
Coal tar pitch as binder is made by calcination, batching, kneading, pressing, roasting, graphitization and machining
Q:What is the difference between SGL graphite electrode and graphite electrode in general?
In fact, the graphite electrode abroad (including Japan) in several ways than we can control the fine, one is pure, another is anisotropic (resistance, thermal conductivity ah) usually do some control, in the strength of domestic now is also doing well, but when we are comparing high quality products, general domestic products it is basically a piece of the indicators are poor
Q:What are the factors affecting the service life of graphite electrode in ultra high power arc furnace?
The ultra high power graphite electrodes produced in China are 300mm, 350mm, 400mm, 450mm, 550mm, 600mm, 650mm, 500mm and 700mm, with lengths of 1600mm, 1800mm, 2000mm, 2200mm, 2400mm and 2700mm.
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:What are the structures of pyrolytic graphite electrodes? What are their properties and applications? We hope that some details will not be found
The high purity graphite component is put into the furnace, and nitrogen and methane are produced under vacuum high temperature. Then graphite is shown to produce 10% coating.
Q:How to solve the problem of graphite electrode being crushed during electrolysis
There's no way. It's an industrial problem, and that's how graphite works.

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