TSN – 6L
Permissible spatial positions during welding
TSN – 6L Welding Electrodes
Welding electrodes for gray, high-strength and malleable cast iron
Prices for welding electrodes
Type of coverage
Basic (calcium-fluorite). It ensures stable arc burning, high-quality formation of the deposited metal and minimal splashing.
Current and polarity
Direct current of reverse polarity (DC+). Welding (surfacing) is performed only in the lower position.
Surfacing coefficient
9-11.0 g/ah
Consumption of electrodes
~ 1.5 kg per 1 kg of deposited metal
Application Area. TSN – 6L Welding Electrodes.
For surfacing sealing surfaces of valve parts for boilers operating at temperatures up to 570°C and pressures up to 7800 MPa. Surfacing in the flat position with direct current of reverse polarity.
Surfacing is performed with preheating to a temperature of 300-400°C. Surfacing of small-sized products is permissible without preheating. Baking – 120-150°C, 1 hour.
Welding Technique. TSN – 6L Welding Electrodes.
Surfacing of large-sized products is performed with preheating and interpass heating to a temperature of 300-400°C. Surfacing of small-sized parts is permissible without preheating. The process is carried out with a short arc on a thoroughly cleaned surface with minimal heat input.
After surfacing, slow cooling and mandatory high-temperature tempering at a temperature of 610-725°C for 1 hour with slow cooling to 200°C are recommended.
Regulatory Documents. TSN – 6L Welding Electrodes.
GOST 9466-75, GOST 9467-75.
Main Weldable Materials. TSN – 6L Welding Electrodes.
Surfacing of sealing surfaces (seats, wedges, discs) of shut-off, control, and safety valves for power engineering (boilers, steam pipelines), oil and gas, and chemical industries.
Special Properties. TSN – 6L Welding Electrodes.
The deposited metal has high resistance to corrosion and erosive wear in water and steam environments, and is resistant to galling and seizure of sealing surfaces.
Chemical Composition of Deposited Metal, %
| C | Si | Mn | P | S | Cr | Ni | |
| Minimum | 0.00 | 0.00 | 0.00 | 0.000 | 0.000 | 15.0 | 7.00 |
| Maximum | 0.25 | 0.80 | 1.20 | 0.70 | 0.040 | 18.40 | 9.00 |
Welding Recommendations (Current, A)
| Diameter, mm | Weld Position | ||
| Flat | Vertical | Overhead | |
| 4.0 | 110-150 | – | – |
| 5.0 | 160-200 | – | – |
We respond quickly to questions on Telegram
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Bottom horizontal or in a boat
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Bottom to the corner
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Horizontal seam on a vertical plane
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Vertical seam for lifting
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Vertical seam for descent
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Ceiling seam
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.
Contacts
Company phone numbers:
+375 (29) 688-27-06
+375 (17) 388-28-02 accountant
+375 (17) 388-28-03 sales department
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