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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

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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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