Que hàn cường độ cao NIHONWELD N-9018G

  I. APPLICATIONS:

Welding of 60 kgf/mm2 class high tensile strength steel for pressure vessels. penstocks, bridges offshore constructions vehicles and machinery

II. DESCRIPTIONS:

N-9018-G 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 350°C-400°C for about one hour before use.
• Adopt back step method or strike the arc on a small plate prepared for this particular purpose because arc striking on base metal is in danger of initiating cracking.
• Keep the arc as short as possible.
• Preheat at 50-150°C before use.
• Pay attention not to exceed proper heat-input because excessive heat-input causes deterioration impact values and yield strength of weld metal.

            IV. TYPICAL     CHEMICAL COMPOSITION OF ALL WELD METAL DEPOSIT (%):

V. TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL DEPOSIT:

VI. WELDING POSITIONS : ALL POSITIONS INCLUDING VERTICAL DOWN: 1G, 2F, 2G, 3G(UP), 4G

 VII. SIZE& RECOMMENDED CURRENT RANGE: AC OR DC (+)