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Electrodes МР - 3

WELDING ELECTRODES MR - 3 (diameter 2; 2,5; 3; 4; 5; 6 mm)

CLASSIFICATION: E46 in accordance with GOST 9467-75

LEGEND:E46 - IR-3 - Ø - LE
E 430 (3) - P26

TECHNICAL REQUIREMENTS:GOST 9466-75, GOST 9467-75 and TU RB 100034500.010-2005

COATING: rutile

PURPOSE:

The electrodes used for welding ordinary and critical structures of carbon steels in all positions seam, except vertical "top-down", and the variable direct current reverse polarity.

CHARACTERISTICS Electrodes:

arcing

sustainable;

splashing degree

small

formation of the joint

good;

Separation of the slag crust

normal

The tendency of the weld metal to pore formation

low;

deposition rate (in the lower position of the weld)

8.0-9.0 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;

spraying factor

2.0-5.5

Typical mechanical properties all weld metal (at normal temperature)

Tensile strength, MPa

Yield strength, MPa

Relative extension, %

Impact toughness J / cm2

480

390

22

90

Chemical composition of deposited metal:

Element content,%

Carbon

Manganese

Silicon

Sulfur

Phosphorus

0,07-0,12

0,40-0,85

0.07 - 0.20

Not more than 0,040

Not more than 0,045

DIRECTIONS FOR USE:

In case of exceeding the permissible moisture content in the coating (1.5%) before use further electrodes are calcined at a temperature of 140-160 ° C for 60 minutes.

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

70-100

60-90

60-90

4

100-150

90-140

90-140

5

150-200

140-180

-

Welding structures medium and large thickness in the bottom position to produce elevated modes electrode tilt toward the direction of welding (back angle).

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