ANO – 21
Permissible spatial positions during welding
ANO-21 Welding Electrodes
Electrodes for welding of carbon and low alloy steels
Prices for welding electrodes
Type of coverage
Rutile oil. It provides easy arc ignition, stable combustion, minimal splashing and easy separation of the slag crust. Gorenje.
Current and polarity
Constant and variable (=,~). (the reverse polarity on the direct current “+” on the electrode is recommended). Suitable for welding from welding transformers and rectifiers.
Surfacing coefficient
8.0 – 9.0 g/ah
Consumption of electrodes
~ 1.7 kg per 1 kg of deposited metal
Application Area. ANO-21 Welding Electrodes.
ANO-21 welding electrodes are intended for welding fillet, butt, and lap joints of metal with a thickness of 1-5 mm in all spatial positions, including vertical welds using the “top-to-bottom” technique.
Weldable materials: St3kp, St3ps, St3sp, St4ps, St5ps, St08kp, St10, St20, St15k, St16k, St18k, St20k.
Used for welding carbon structural steels when increased requirements are imposed on weld formation in various spatial positions.
Welding Technique. ANO-21 Welding Electrodes.
Welding is performed using the forehand technique (angled forward). The electrode is positioned in the bisector plane at an angle of 40-70° to the welding direction.
Regulatory Documents. ANO-21 Welding Electrodes.
GOST 9466-75, GOST 9467-75, TU 51-00154325-21-02, OST 5.9224-75
Corresponding International Standard.
E 431(3) – R11
Special Properties. ANO-21 Welding Electrodes.
The electrodes are not prone to crack and pore formation in the deposited metal. They have good welding and technological properties, allow welding over rust and contaminated surfaces.
Chemical Composition of Deposited Metal, %
| C | Si | Mn | P | S | |
| Minimum | 0.07 | 0.07 | 0.50 | – | – |
| Maximum | 0.12 | 0.20 | 0.80 | 0.040 | 0.030 |
Welding Recommendations (Current, A)
| Diameter, mm | Weld Position | ||
| Flat | Vertical | Overhead | |
| 2.5 | 60-90 | 60-100 | 40-60 |
| 3.0 | 90-130 | 80-110 | 60-100 |
| 4.0 | 140-180 | 140-180 | 80-110 |
| 5.0 | 170-220 | 160-200 | 140-180 |
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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