• Made in China Graphite Electrode Very Good Quality System 1
  • Made in China Graphite Electrode Very Good Quality System 2
  • Made in China Graphite Electrode Very Good Quality System 3
  • Made in China Graphite Electrode Very Good Quality System 4
Made in China Graphite Electrode Very Good Quality

Made in China Graphite Electrode Very Good Quality

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Loading Port:
Qingdao
Payment Terms:
TT OR LC
Min Order Qty:
12 m.t.
Supply Capability:
1000 m.t./month

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High Quality Graphite Electrode For EAF Furnace

 

Packaging Details:      

1: Wooden crates with steel straps; wooden crates treated with "IPPC" label

2: standard export fumigated wooden box with steel strip fixed outside

3: In wooden case, each nipple must be packed in cardboard box.

Each electrode and nipple to preset at one end. The head of the preset nipple shall be covered by cardboard cap supported by wooden plate from both ends to avoid damage to the threads during transportation


Delivery Detail: 15-45 days after confirming the contract

 

Production Description:

Graphite electrode is made from the domestic first petroleum coke and high quality needle coke and widely used in the electric arc furnaces for production of alloy steels, metal and other nonmetallic materials, etc. The graphite electrodes include regular power, high power, super high power, ultra high power and square electrode. The range of diameters covers from 200mm to 700mm. Our products own the following characteristics: low electric resistance, good electric and thermal conductivity, high oxidation resistance, greater resistance to thermal and mechanical shock, high mechanical strength, high machining accuracy.

 

Physical and chemical index

 

Item

Unit

Nominal Diameter(mm)

YB/T4088-2000

Industry Standard

Typical Values

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

Made in China Graphite Electrode Very Good Quality

Made in China Graphite Electrode Very Good Quality

Made in China Graphite Electrode Very Good Quality




Q:Why should graphite paper be placed between the heater and the graphite electrode?
. Different single crystal furnace heaters may be of the same size or may be different. The heater is determined according to the size of the Czochralski single crystal furnace and the parameters of the drawn single crystal, and is generally designed in the form of a parallel circuit, and the following parameters. A heater, the heater, the shape of two inner diameters of three, four, the effective length of the heater heater, the heater piece is five thickness and gives the heater diameter. These parameters are determined according to Czochralski single-crystal furnace parameters and its crystal diameter. The power transformer parameters are mainly based on the single crystal furnace heating power: maximum output power, maximum output voltage and maximum output current, diameter and height of the crucible. The design of the heater has the following steps: 1. Selecting and determining the shape of the heater; the heater is made of high purity graphite; the resistivity of the high purity graphite; the heater is usually made into a cylinder at present.
Q:Thermal expansion coefficient of graphite
Thermal expansion coefficient (100 degrees Celsius --600 degrees Celsius) diameter 200--500 graphite electrode body is not greater than 2.410 of the negative four times per degree Celsius
Q:Why graphite can be used as conductive material?
Lubricants can not be used in high speed, high temperature, high pressure conditions, and graphite wear-resistant materials can be at the temperature and at a high sliding speed, without lubricating oil work. Many transporting corrosive media devices are widely used, which is made of graphite material piston ring, the sealing ring and the bearing, they are running, without adding lubricating oil, graphite and many metal processing when good lubricant.
Q:What do carbon products include?
High power electrode and ultra high power electrode. The carbon block can be divided into blast furnace carbon block, aluminum carbon block and electric furnace block. Carbon products can be divided into carbon products, graphite products, carbon fibers and graphite fibers according to the depth of processing. Carbon products can be divided into graphite products, carbon products, carbon fibers and special graphite products according to the raw materials and the production process. Carbon products according to their ash content, and can be divided into multi gray products and less ash products (including ash below l%).
Q:How large is the permissible overload current per square millimeter of the graphite electrode cross section?
Overhead wires, radiating the best conditions, allowed the current largest. The insulated wire in the house is laid in the wall, which has the worst heat release conditions and the smaller permissible current, so there are different safety currents.
Q:What is the composition of petroleum coke and what is its use?
Medium sulphur and common cooked coke; used in large quantities for aluminium smelting. High sulfur, ordinary coke is used in chemical production, such as the manufacture of calcium carbide, silicon carbide, etc., but also as a metal casting and other fuels. Most of the petroleum coke produced in China belongs to low sulfur coke, which is mainly used for smelting aluminium and making graphite.
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:Which department in the steel plant needs graphite in large quantities?
For steel and iron alloys, graphite electrodes are used, when powerful currents pass through electrodes into the melting zone of the electric furnace to produce an arcThe electric energy is converted into heat energy, and the temperature is increased to about 2000 degrees, so as to achieve the purpose of smelting or reaction. In addition, the electrolytic goldWhen the magnesium, aluminium and sodium are used, the anode of the electrolytic cell is also made of graphite electrode. The resistance furnace for carborundum is also made of graphite electrode as the burnerConductive material.
Q:Classification, uses and manufacturers of graphite electrodes
Graphite as electrode(1) the processing speed is faster: normally, the mechanical processing speed of graphite can be 2~5 times faster than copper, while the discharge processing speed is 2~3 times faster than copper;More material is not easily deformed: obvious advantages in the processing of thin electrodes; copper softening point at about 1000 degrees, easily deformed by heat; graphite sublimation temperature is 3650 degrees; the thermal expansion coefficient of copper is only 1/30.(2) lighter weight: the density of graphite is only 1/5 of copper. When large electrode is used for discharge machining, it can effectively reduce the burden of machine tools (EDM). It is more suitable for large-scale die applications.
Q:What are the losses in graphite electrode?
In EDM, discharge principle is to remove the workpiece material by using the tool and the workpiece anode spark discharge explosion, spark discharge is bidirectional, not only will the workpiece removal part, forming processing, will cause some loss of electrode. Electrode loss is one of the main causes of machining errors in machining, and is an important technical parameter affecting the accuracy and quality of EDM

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