1. EQUIVALENT STANDARD AND CONFORMITY
- Vietnamese standard: TCVN 3223-2000 E513B.
- Vietnamese regulation: QCVN 21:2015/BGTVT-MW53
- American Standard: AWS E7018
- Japanese Standard: JIS D5016
- NK Registry: NK KAW53H10
2. DESCRIPTION
- E7018 has base cover, which is supplemented with a large amount of Manganese, Silicon and rare earth, to ensure the weld has extremely small impurities, high bearing strength.
- The flour content in the coating has strongly reduced hydrogen, so the E7018 welds contain very low hydrogen content, ensuring resistance to hot and cold thermal cracking and high weld toughness.
- E7018 can weld in all positions with a stable arc, strong pressure, weld pool, ease of peeling and cleaning slag, no slag, porosity, etc. Especially when welding with a DC power source, E7018 gives excellent results.
- The welding rods weld low-carbon and low-alloy steels with tensile strengths of 500 N/mm2.
- E7018 is the best choices for welded structural strength problems and are suitable for ship structures, construction, wharves, heavy load beams, pressure tanks, etc.
3. PACKING SPECIFICATION
| Net weight of spool (Kg) |
Net weight of big box (Kg)
|
| 5 |
20 |
4. WELD MECHANISM
| Tensile strength (N/mm²) |
Melting limit (N/mm²) |
Elongation (%) |
Impact resistance tenacity at -30ºC (J) |
| 490 min |
400 min |
22 min |
27 min |
5. CHEMCIAL COMPOSITON OF WELDING METAL LAYER (%)
| C |
Mn |
Si |
P |
S |
| 0.15 max |
1.6 max |
0.75 max |
0.035 max |
0.035 max |
6. SIZE AND RECOMMENDED CURRENT (AC OR DC)
| Diameter (mm) |
Ø 3.2 |
Ø 4.0 |
Ø 5.0 |
| Length (mm) |
350 |
400 |
400 |
| Welding Current (Ampe) |
Horisontal welding |
100–150 |
180-230 |
190-240 |
| Vertical welding |
80-120 |
120-160 |
140-180 |
7. INSTRUCTIONS FOR USE
- Fully preparing the elements of labor safety before welding. Welding power source is stable.
- When the welding rod is moist, welding is vulnerable to smoke, splashed and unstable, weld is clarified, need to dry at 200oC in 40 – 60 minutes before use.
- Removing all traces of oil, dust and dirt on the surface of the welding material.
- Making sure the weld gap, bevelled edge of welding materials as prescribed to achieve strong weld.
- Selecting the welding line according to the instructions to obtain the deep weld, high working ability.