TSCH – 4
Permissible spatial positions during welding
TSCH – 4 Welding Electrodes
Welding electrodes for gray, high-strength and malleable cast iron
Prices for welding electrodes
Type of coverage
Basic (calcium fluoride). It provides easy excitation and stable arc gorenje, low metal losses from splashing, good formation of seam metal.
Current and polarity
Direct current of reverse polarity (DC+). With a high no-load voltage (more than 50-60 V) of the welding transformer and a short cable length, alternating current welding is possible.
Surfacing coefficient
Up to 10.0 g/ah
Consumption of electrodes
~ 1.8 kg per 1 kg of deposited metal
Application Area. TSCH – 4 Welding Electrodes.
TSCH-4V are electrodes with a special coating. The electrodes are intended for cold welding of parts made of high-strength cast iron with spheroidal graphite and gray cast iron with flake graphite, as well as their combinations with steel.
For welding damaged parts and sealing defects in high-strength and gray cast iron castings, and for preliminary surfacing of the first one or two layers on worn cast iron parts prior to subsequent surfacing. Baking: 220-240°C, 40-60 min.
Welding Technique. TSCH – 4 Welding Electrodes.
Welding is performed only on clean, oil-free, and rust-free surfaces (the joint area should be cleaned before welding). Welding is carried out with a short arc in the flat position using short beads 25-35 mm long, with each bead cooled in air to 60°C and each section of the weld forged with light hammer blows.
Regulatory Documents. TSCH – 4 Welding Electrodes.
GOST 9466-75, GOST 9467-75.
Main Weldable Materials. TSCH – 4 Welding Electrodes.
High-strength cast iron (VCh), gray cast iron (SCh), malleable cast iron (KCh), cast iron-steel joints.
Special Properties. TSCH – 4 Welding Electrodes.
The electrodes have good welding and technological properties: easy arc striking and stable arc burning, low metal losses due to spatter, good weld metal formation when welding in the flat position. They ensure the production of a weld suitable for subsequent machining with cutting tools.
Chemical Composition of Deposited Metal, %
| C | Si | Mn | P | S | V | |
| Minimum | 0.00 | 0.00 | 0.00 | 0.000 | 0.000 | 8.50 |
| Maximum | 0.25 | 0.80 | 1.20 | 0.70 | 0.040 | 10.50 |
Welding Recommendations (Current, A)
| Diameter, mm | Weld Position | ||
| Flat | Vertical | Overhead | |
| 3.0 | 65-80 | – | – |
| 4.0 | 90-120 | – | – |
| 5.0 | 130-150 | – | – |
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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