Que hàn điện N42 – VD

Liên hệ

  • Welding low-carbon steel structures such as barge’s shell, ferry dock, basin, etc.
  • Welded joints are ductile and shockproof.

Applied standards

  • TCVN 3223: 2000 E430
  • ASME/AWS A5.1 E6013

Characteristics – applications: 

  • N42 – VD is the electriode under the group of rutile sheath. The welded joints are less defective; arc is stable without splashing and explosion and slags are easily blistered. The well-fined welded joints are ductile and have endurance bending strength.  Possibly welding at all positions.
  • Suitable for welding low-carbon steel under 430 ~ 490 Mpa load such as rolled-steel structures, barge’s shell, ferry, basin, etc.

Chemical composition (%):

C Mn Si P S
Required Not required ≤ 0.04 ≤ 0.03
Obtained 0.030 0.015

Mechanical property of weld metal:

Yield strength
(Mpa)
Tensile strength
(Mpa)
Elongation
(%)
Impact value
(J)
Required ≥ 331 ≥ 414 ≥ 17 Not required
Obtained 420 510 24 00C: 55
Room temperature: 70

Instructions for use:

  • Clean oil, grease and dust before welding
  • If the electrode is wet, dry at 70 ~100 C for 30 ~60 minutes before welding
  • Process welding edges as regulated
  • Select appropriate welding current to avoid possible defects
  • Use AC or DC± power
  • Size of the electrode and used current:
Diameter (mm) Φ 3.2 Φ 4.0
Length (mm) 350 400
Amperage (A) Flat welding 120~140 160~210
Vertical welding & Bare welding 90~120 130~180