Chemical Index of Graphite Electrodes HP with Nipples

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Specifications 

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

 

Chemical Index of Graphite Electrodes HP 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 HP 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. 

HP

Physical and chemical index

Item

Unit

Nominal   Diameter(mm)

YB/T4088-2000

Typical   Values

Industry   Standard

200-400

450-550

300-550

Resistance

Electrode

ohm

≤7

≤7.5

5.0-6.8

Nipple

≤6.5

≤6.5

4.0-5.0

Bending   Strength

Electrode

Mpa

≥10.5

≥9.8

≥11.0

Nipple

≥14.0

≥14.0

≥16.0

Elastic   Modulus

Electrode

Gpa

≤12.0

≤12.0

≤11.0

Nipple

≤16.0

≤16.0

≤15.0

Density

Electrode

g/cm3

≥1.60

≥1.60

1.63-1.70

Nipple

≥1.70

≥1.70

1.73-1.80

Ash   content

Electrode

%

≤0.3

≤0.5

≤0.3

Nipple

CTE(100-600)

Electrode

10-6/C

≤2.4

≤2.4

1.8-2.2

Nipple

≤2.2

≤2.2

1.5-1.8

Recommended current carrying capacity

Nominal   Diameter

YB/T4088-2000

Typical   Values

Industry   Standard

Current   Carrying

Currant   Density

Electrical   Arc Furnace

Capacity

Current   Carrying

Current   Density

in

mm

A

A/cm2

A

A/cm2

12

300

13000-17400

17-24

15000-21000

21-29

14

350

17400-24000

17-24

20000-28000

21-29

16

400

21000-31000

16-24

24000-35000

19-28

18

450

25000-40000

15-24

29000-45000

18-28

20

500

30000-48000

15-24

34000-54000

17-27

22

550

35000-55000

14-22

34000-54000

16-25

 

Image

Chemical Index of Graphite Electrodes HP with Nipples 

Chemical Index of Graphite Electrodes HP with Nipples

Chemical Index of Graphite Electrodes HP with Nipples



 

FAQ:

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 HP 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:How can the graphite powder be processed into high quality carburizing agent? Thank you
So that impurities on the high, so basically can not be processed into so-called quality, and can leave a contact, discuss each other
Q:Excuse me, why does the graphite electrode flake when electrolyzed salt water is used?
The structure of the electrolytic cell is different when the electrolytic cell is constructed with different electrolytes
Q:Carbon graphite electrode and what is the difference?
The material is composed of carbon carbon, but without graphite, after molding sintering temperature is only more than 1000 degrees, no graphitization.
Q:Why use platinum ferroalloy instead of iron as electrode?
Its surface properties must comply with the characteristics of the additives so that they can be dispersed evenly.
Q:What is anodized graphite?
Electrochemical graphite is made of graphite, coke and other raw materials, placed in the high temperature of more than 2500 degrees in the furnace, processed into products.
Q:Does the silicon carbide heat plant require a fine structure graphite electrode? What kind of graphite products do you need?
But because the silicon carbide is too hard, it is difficult to machining, good workability, such as non special requirements, using graphite instead of silicon carbide, instead of the effect is not good, but can use a silicon carbide, easy processing, small life than silicon carbide.
Q:Can high-purity graphite be used as an electrode?
High purity graphite can be used as electrode, high purity graphite as electrode has many advantages. According to the research of Qingdao Huatai graphite, we can see: 1, high purity graphite electrode is quick in opening and good in air permeability;
Q:Can graphite be used as an electrode for electrolysis of silver in silver nitrate?
If it is molten, it can be made out of silverFor solution, only AgNO3+H2O== electrolysis ==Ag+HNO3+O2 is analyzedWhen the HNO3 concentration is enough, it will continue to react with Ag.... So you can't get Ag elements.
Q:National standard for graphite electrodes
The national standard normal power graphite electrode graphite electrode: the standard name standard classification number Q51 Standard No. YB/T 4088-2000 for YB/T 4088-2000 YB/T 4088-1992 2000/12/1, instead of the execution time of 0:00:00 release time 2000/7/26 0:00:00 adoption situation

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