Que hàn cường độ cao NIHONWELD N-9018M

I. APPLICATIONS:

Welding of 60kgf/mm² class high tensile strength steel for pressure vessels, bridges, penstocks, vehicles, offshore constructions vehicles and machinery. Fillet tack welding of T1, HY80, HY90 steels.

II. DESCRIPTIONS:

N-9018M is an iron powder low hydrogen type electrode for all-position welding, which provides good notch toughness of weld metal at low temperature. The usability and X-ray soundness of weld metal are good in all-position welding.

III. NOTES ON USAGE:

• Dry the electrodes at 300-350ºC for one hour before use.
• Adopt back step method or strike the arc on a small steel plate prepared for this particular purpose because arc striking on the base metal is in danger of initiating cracking.
• Keep the arc as short as possible.
• Preheat at 80-100°C before use.
• Pay attention not to exceed proper heat-input because excessive heat-input causes deterioration of impact values and yield strength of weld metal.

IV. TYPICAL CHEMICAL COMPOSITION OF DEPOSITED METAL (%):

V. TYPICAL MECHANICAL PROPERTIES OF DEPOSITED METAL:

VI. WELDING POSITIONS: ALL POSITIONS EXCEPT VERTICAL DOWN

VII. SIZES & RECOMMENDED CURRENT RANGE: AC or DC (+)