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Electrodes MNCH - 2

WELDING ELECTRODES MNCH-2 (diameter 3; 4; 5 mm)

LEGEND: MNCH-2- Ø

TECHNICAL REQUIREMENTS: GOST 9466-75, TU BY 100034500.019-2007

COATING: special

PURPOSE:

Intended for cold welding, casting welding defects and welding parts made of cast ductile and malleable iron and in the lower vertical positions at a constant current of opposite polarity. Recommended for welding the first layer in the compounds from which require high density seams and welding connections, which are requirements for clean surface after machining.

CHARACTERISTICS Electrodes:

arcing

sustainable

splashing degree

small

formation of the joint

a 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)

11-12 g / Ah

deposition rate (electrode diameter 4.0 mm)

1,3-1,5 kg / h

Electrode consumption per 1 kg of weld metal

1.8 kg.

Hardness HB overmold

120 - 160

Chemical composition of deposited metal:

Element content, weight%

Manganese

Nickel + Cobalt

Iron

Copper

1.8-2.6

Rest

2.5-6.0

24,0-29,0

DIRECTIONS FOR USE:

The welding seams perform short length 20 ... 30 mm. Povalikovym With cooling in air to a temperature not higher than 60 ° C and forging roller superimposed light hammer blows.

WELDING MODES:

Electrode diameter mm

Welding current, A

joint position

Underwear

vertical

ceiling

3.0

90-110

70-90

-

4.0

130-160

120-130

-

5.0

180-220

140-190

-


In case of exceeding the permissible moisture content in the coating (0.7%) prior to use electrodes further calcined at a temperature of 190-210 ° C for 40-60 min

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