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Graphite welding electrodes

1. Application of carbon welding electrodes

The main application of carbon welding electrodes is a process of electro-pneumatic gouging and cutting. The process of gauging and cutting is a process of melting components with an electric arc with a simultaneous removal of melted material with the use of compressed air.

Advantages of using carbon electrodes in above mentioned process is elimination of such methods of metal treatment as chiselling, sanding, gauging and cutting with a acetylene blowtorch. The results of using carbon electrodes are:

  • simplicity of a process
  • high efficiency of a process
  • lowered nuisance of work
  • economy of a process

Processes, in which carbon electrodes have most applications:

  • welding of steel, cast iron and non-ferrous metals
  • arc cutting and gauging
  • removal of old welds, finishing operations of welds
  • cleaning and repair of cast iron and non-ferrous metals
  • cutting of metals under water

2. Production process.

In order to increase the intensity of arc-air cutting and gouging, carbon electrodes are covered with the layer of electrolytic copper. For the clients with particular current requirements there is a possibility of producing electrodes with specific parameters.

2. Electrodes in our offer:

  • ESW - 253 Not copper-clad welding electrodes, round or rectangular
  • ESM - 257 Copper-clad welding electrodes, round or rectangular
  • ESC - 270 Copper-clad welding electrodes for underwater cutting, round with a hole

3. Sizes

Type of electrode

Size of cross-section

Φ of an electrode

[ mm ]

Standard length

[ mm ]

Thickness of copper layer

[ mm ]

ESW-253

4

305 - 500

-

5

6

8

10

13

16

19

500 - 1000

ESM-257

4

305 - 450

> 0,05

5

6

> 0,06

8

10

> 0,08

13

> 0,10

16

19

4x12

400

3x25

4x20

5x20

6x20

ESC-270

10/3

220

> 0,20

4. Physico-mechanical properties

Parameter

Unit

Electrodes assortment

ESW-253

ESM-257

ESC-270

Apparent density

g/cm3

1,7

1,7

1,7

Ash content

%

0,5

0,5

0,5

Electrical resistivity

μΩm

17

17

17

Mechanical bending durability

MPa

30

30

30

Thickness of copper layer

mm

-

0,05 – 0,20

0,20

Moisture content

%

0,1

0,1

-

5. Advised current load.

Electrodes

Electrodes cross-section dimensions

[ mm ]

Current load

[ A ]

ESM-257

Φ 4

100 – 180

Φ 5

150 – 230

Φ 6

200 – 350

Φ 8

300 – 450

Φ 10

400 – 550

Φ 13

550 – 900

Φ 16

750 – 1200

Φ 19

1200 – 1600

4X12

290 -440

3X25

440 – 520

4X20

500 – 600

5X20

550 – 800

6X20

600 – 900

ESC-270

Φ 10/3

400 - 550

6. Packaging

Electrode cross-section dimensions

[ mm ]

Amount of electrodes in packaging

[ mm ]

Weight of 100 pcs.

[ kg ]

Φ 4

100

1,0

Φ 5

100

1,36

Φ 6

100

2,18

Φ 8

100

2,96

Φ 10

50

4,82

Φ 13

30

7,60

Φ 16

20

12,88

Φ 19

20

14,50

4X12

100

3,50

3X25

100

6,00

4X20

100

6,64

5X20

100

7,43

6X20

50

8,89

Φ 10/3

50

3,70