China OEM Graphite Electrode For Arc Furnaces - UHP Grades Graphite Electrodes – Sungraf


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China OEM Graphite Electrode For Arc Furnaces - UHP Grades Graphite Electrodes – Sungraf Detail:

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The electrodes carry the electricity that heats electric arc furnaces, the vast majority steel furnaces. They are made from petroleum coke after it is mixed with petroleum pitch, extruded and shaped, then baked to sinter it, and then graphitized by heating it above the temperature (3000 °C) that converts carbon to graphite. They can vary in size up to 11 ft. long and 30 in. in diameter.

UHP Grades Graphite Electrodes (1)

Usage

  • 01
    An increasing proportion of global steel is made using electric arc furnaces
  • 02
    The electric arc furnace itself is getting more efficient and making more steel per tonne of electrode

 Typical properties of UHP graphite electrodes

Applicable Furmace

Dia
Property

AC Furnace

DC Furnace

300-400mm
12″~16″

450-500mm
18″~20″

550-600mm
22″~24″

650-700mm
24″~28″

Bulk Density

g/cm³

1.65~1.76

1.64~1.75

1.64~1.75

1.64~1.75

Specific Resistance

μΩM

4.2~6.0

4.2~6.0

4.2~6.0

4.2~5.5

Elastic Modulus

Gpa

7~14

7~14

7~14

7~14

kgf/mm²

700~1,400

700~1,400

700~1,400

700~1,400

Flexural Strength

MPa

10.5~15

10~15

10~15

10~15

kgf/cm²

105~150

100〜150

100-150

100~150

N/cm²

1,050~1,500

1,000~1,500

1,000~1,500

1,000~1,500

Coefficient Of Thermal
Expansion (R.T.≤600℃)

X10~-6/℃

1.0~1.5

1.0~1.5

1.0~1.5

1.0~1.4

Real Density

g/cm³

2.20~2.23

2.20~2.23

2.20~2.23

2.20~2.23

Porosity

%

20~26

20~27

20~27

20~27

Ash Content

%

≤0.2

≤0.2

≤0.2

≤0.2

Typical properties of nipples

Specifications

≤φ400

φ450-500

φ550

φ600-700

Specific Resistance (μΩM )

≤4.0

≤3.8

≤3.6

≤3.6

Flexural Strength (MPa)

18-24

17-25

20-28

20-28

astic Modulus (GPa)

≤18

≤18

≤18

≤18

Bulk Density (g/cm³)

1.76-1.84

1.78-1.84

1.79-1.86

1.79-1.86

Coefficient Of Thermal Expansion (106/℃)

0.9-1.3

0.9-1.2

0.9-1.1

0.9-1.1

Ash Content (%)

≤0.3

≤0.3

≤0.3

≤0.3

Current carrying capacity for UHP graphite electrodes

Current Capacity Of UHP Graphite Electrodes
Specifications Current Capacity(A) Current Density(A/cm²)
(inch) (mm) AC DC AC DC
12 300 18,000-32,000 - 24-43 -
14 350 22,000-39,000 - 22-39 -
16 400 28,000-47,000 - 21-36 -
18 450 34,000-55,000 - 21-33 -
20 500 41,000-63,000 - 20-31 -
22 550 48,000-70,000 65,000-78,000 19-28 26-32
24 600 55,000-80,000 75,000-90,000 19-27 26-31
W 650 69,000-89,000 87,000-104,000 20-26 25-30
28 700 80,000-100,000 100,000-120,000 20-25 25-30

c


Product detail pictures:

China OEM Graphite Electrode For Arc Furnaces - UHP Grades Graphite Electrodes – Sungraf detail pictures

China OEM Graphite Electrode For Arc Furnaces - UHP Grades Graphite Electrodes – Sungraf detail pictures

China OEM Graphite Electrode For Arc Furnaces - UHP Grades Graphite Electrodes – Sungraf detail pictures

China OEM Graphite Electrode For Arc Furnaces - UHP Grades Graphite Electrodes – Sungraf detail pictures


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