Electrodes UONI 13/55
WELDING ELECTRODES UONI 13/55 (diameter 2; 2,5; 3; 4; 5 mm)
CLASSIFICATION:E50A in accordance with GOST 9466
LEGEND: E50A - UONI 13/55 - Ø - UD
E 514 - B20
TECHNICAL REQUIREMENTS: GOST 9466-75, GOST 9467-75, TU BY 100034500.013-2005
COATING: main
PURPOSE:
Intended for welding of critical constructions of carbon and low alloy steels, when the metal welds are increased requirements for ductility, toughness. In all spatial positions except the vertical "top-down", direct current reverse polarity.
CHARACTERISTICS Electrodes:
arcing |
sustainable; |
splashing degree |
small |
formation of the joint |
good; |
Separation of the slag crust |
good |
The tendency of the weld metal to pore formation |
low; |
deposition rate (in the lower position of the weld) |
9.0-9.5 g / Ah; |
deposition rate (electrode diameter 4.0 mm) |
1,2-1,6 kg / h; |
Electrode consumption per 1 kg of weld metal |
1.7 kg; |
Typical mechanical properties of weld metal (at 20 ° C):
Tensile strength, MPa |
Yield strength, MPa |
Relative extension, % |
Impact toughness J / cm2 |
510 |
440 |
22 |
120 |
Chemical composition of deposited metal:
Element content,% |
||||
Carbon |
Manganese |
Silicon |
Sulfur |
Phosphorus |
0.06-0.12 |
0.6-1.2 |
not more than 0.50 |
<= 0.030 |
<= 0.035 |
DIRECTIONS FOR USE:
1. The moisture content of the electrode coating before using them must not exceed 0.3%.
2. In case of exceeding the permissible moisture content in the coating of electrodes before use further calcined at a temperature of 300-350 ° C. calcining time of from 40 to 60 minutes.
3. The welding conditions (current) have the values given in the table:
WELDING MODES:
Electrode diameter mm |
Welding current, A |
||
joint position |
|||
Underwear |
vertical |
ceiling |
|
2.0 |
50-80 |
40-60 |
40-60 |
2.5 |
60-90 |
50-80 |
50-80 |
3 |
80-110 |
70-90 |
70-90 |
4 |
130-160 |
120-150 |
120-150 |
5 |
180-200 |
160-180 |
- |
The welding seam in the lower position to produce elevated modes electrode tilt toward the direction of welding (back angle). It recommended short arc length.
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