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T - 620

WELDING ELECTRODES T-620 (diameter 3; 4; 5 mm)

LEGEND: E-320H23S2GTR-T620-Ø-NG
                        E-700 / 59-1-P42

TECHNICAL REQUIREMENTS:GOST 9466-75, GOST 10051-75 and TU BY 100034500.054-2015

COATING:special

PURPOSE:

Surfacing electrodes T 620 parts operating under abrasive wear preferably with moderate shock loads. Surfacing in lower and angular positions alternating current and direct current straight polarity.

CHARACTERISTICS Electrodes:

arcing

sustainable

splashing degree

moderate

formation of the joint

moderate

Separation of the slag crust

satisfactory

deposition rate (in the lower position of the weld)

8.5-9.0 g / Ah

deposition rate (electrode diameter 4.0 mm)

1,7-2,0 kg / h

Electrode consumption per 1 kg of weld metal

1.8-1.9 kg

Chemical composition of deposited metal:

Element content, weight%

Carbon

Manganese

Silicon

Chromium

boron

Sulfur

Phosphorus

2.9-3.5

0.5-1.5

2.0-2.5

22,0-24,0

0.5-1.5

<= 0.035

<= 0.040

DIRECTIONS FOR USE:

Provide a weld metal with high resistance to wear under abrasive wear materials. The weld metal has the tendency to form fine cracks without reducing tend operational resistance weld parts.

WELDING MODES:

Not recommended - in order to avoid pitting - producing steel parts surfacing more than two layers, iron - in one layer. For T-weld overlays electrodes 620 lower layers of large thickness of the deposited electrodes other marks, depending on the brand of the parent metal. Possible way surfacing bathrooms.

Calcination electrode T-620 before welding: 180-200 ° C; 2-3 hours.

Welding is made on the average length of the arc from the electrode to tilt toward the direction of welding (back angle).

Electrode diameter mm

Welding current, A

3

110-130

4

200-220

5

250-270

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