PHiLARC Products
- Carbon Steel Electrodes
- High Tensile Strength Steel
- For Low Temperature Steel
- Heat Resisting Steel Electrodes
- Atmospheric Corrosion Resisting
- Hardfacing Electrodes
- Stainless Steel Electrodes
- Nickel and Nickel Alloy Electrodes
- Cast Iron Electrodes
- Aluminum Alloy Electrodes
- Bronze and Copper Alloy Electrodes
- Gouging and Cutting Electrodes
- Solid Welding Wire (GMAW and GTAW)
- Oxy Fuel Gas Filler Rods for Brazing
- Oxy Fuel Gas Brazing FLuxes
- Submerged Arc Weding Wire and Flux
- Flux Cored Wires (FCAW)
PA-7048
AWS Specification: AWS A5.1 E7048
JIS Specification : NONE
Other Spcification:NONE
I. APPLICATIONS:
Vertical downward welding of ships, building and bridges.
II. DESCRIPTIONS:
PA-7048 is a low hydrogen type electrode for exclusively vertical downward welding. Mechanical properties and crack resistibility of weld metal are good and slag is self-lifting. As higher amperage can be used, the efficiency of vertical welding is remarkably improved compared with vertical upward welding.
III. NOTES ON USAGE:
-
Manipulate the electrode straight downward without weaving and press its tip against the mother plat as shown in the sketch.
-
Dry the electrodes at 350-400oC for about 60 minutes before use.
-
Keep the arc as short as possible.
-
Adopt back step method or strike the arc on a small steel plate prepared for this particular purpose to prevent blowholes at the arc starting.
IV. TYPICAL CHEMICAL COMPOSITION OF WELD METAL (%):
C |
Si |
Mn |
P |
S |
0.08 |
0.54 |
0.9 |
0.01 |
0.01 |
V. TYPICAL MECHANICAL PROPERTIES OF WELD METAL:
Tensile Strength N/mm2 (Ksi) |
Yield point N/mm2(Kgf/mm2) |
Elongation % |
Impact Value 0ºC, J (ºF, Ft.lbs) |
560 (81) |
480 (70) |
32 |
-29, 110 (-20, 81) |
VI. WELDING POSITIONS: VERTICAL DOWN
VII. SIZE AND RECOMMENDED CURRENT RANGE (AC or DC +):
Diameter (mm) |
|
3.2 |
4.0 |
5.0 |
Length (mm) |
|
400 |
450 |
450 |
Ampere |
Vertical Down |
100 - 160 |
140 - 210 |
220 - 270 |