Komsomolets-100
Permissible spatial positions during welding
Komsomolets-100 Welding Electrodes
Electrodes for welding and surfacing of non-ferrous metals and alloys
Prices for welding electrodes
Core. Komsomolets-100 Welding Electrodes.
Copper alloy (Cu-Mn-Si-Fe)
Application Area. Komsomolets-100 Welding Electrodes.
Komsomolets-100 electrodes are used for repair and fabrication of copper parts in various industries:
• Electrical engineering and power generation: welding of busbars, current conductors, contacts, transformer components.
• Chemical engineering: welding and repair of copper coils, heat exchangers, tanks.
• Shipbuilding: welding of seawater pipeline elements.
• Repair of fittings and copper parts.
• Fabrication of bimetallic assemblies (copper-steel) for special equipment.
Welding Technique. Komsomolets-100 Welding Electrodes.
Welding is performed with preliminary local preheating of products to a temperature of 300-700°C (depending on the thickness of the metal being welded). During the welding process, a short arc should be maintained. Baking before welding: 360-400°C – 1 hour.
Regulatory Documents. Komsomolets-100 Welding Electrodes.
GOST 9466-75, E – 10Kh5MF
Main Weldable Materials. Komsomolets-100 Welding Electrodes.
Komsomolets-100 electrodes are intended for welding and surfacing of products made of commercially pure copper grades M1, M2, M3, as well as for performing dissimilar joints of copper with carbon and low-alloy steels.
Special Properties. Komsomolets-100 Welding Electrodes.
The electrodes ensure the production of deposited metal with electrical conductivity up to 20% of the electrical conductivity of commercially pure copper. The deposited metal is a copper-based alloy alloyed with manganese and silicon.
Chemical Composition of Deposited Metal, %
| Cu | Si | Mn | Fe | |
| Minimum | Base | 0.70 | 4.80 | 0.65 |
| Maximum | <90.00 | 1.50 | 8.50 | 1.30 |
Welding Recommendations (Current, A)
| Diameter, mm | Weld Position | ||
| Flat | Vertical | Overhead | |
| 3.0 | 90-110 | – | – |
| 4.0 | 120-140 | – | – |
| 5.0 | 170-190 | – | – |
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All covered electrodes are sensitive to moisture absorption. Excessive moisture content in the coating can lead to porosity or hydrogen cracking.
However, if the climatic storage conditions meet the following requirements, moisture absorption by the electrodes is minimal:
• 5–15°C at a maximum relative humidity of 60%
• 15–25°C at a maximum relative humidity of 50%
• >25°C at a maximum relative humidity of 40%
At lower temperatures, maintaining the storage temperature 10°C above the ambient temperature is sufficient to achieve the required moisture content level. Cold packages must be allowed to warm up to ambient temperature before opening.
At higher temperatures, the required moisture content in the air can be achieved by dehumidification. The shelf life of electrodes under the above conditions shall not exceed three years.
• Covered electrodes with a basic coating and low hydrogen content must be baked prior to each use whenever requirements regarding the content of diffusible hydrogen and/or the soundness of the deposited metal are specified.
• Stainless steel electrodes with a basic coating may produce porosity during welding if the humidity levels during their storage did not meet the requirements. To restore their original properties, they also need to be baked.
• Electrodes for welding carbon steels with a cellulosic or rutile coating typically do not require baking.
• Electrodes that have suffered serious damage due to exposure to moisture cannot be restored by rebaking and must be rejected.