AWS E7018
Mild Steel Electrodes
 Description:E7018
is an excellent carbon steel electrode with iron powder
low hydrogen potassium coating. It is used on both AC
and DC in all position.As the coating contains iron
powder, it has highly efficient welding and can reduce
welding layers.
Application:Used
to weld low carbon structure and low alloy steel structure.,
such as 16 Mn etc.
CHEMICAL COMPOSITION OF MELTING METAL（%）
|
C |
Mn |
Si |
S |
P |
|
≤0.12 |
|
≤0.75 |
≤0.035 |
≤0.040 |
Reference Current
|
Diameter(mm) |
2.5 |
3.2 |
4.0 |
5.0 |
|
Current |
90～120 |
|
170～200 |
210～250 |
Note:
Before welding, it is necessary to clean the work
piece and remove the impurities such as oil ,grease
r ust
and moisture, bake the electrode at the temperature
of about 350 degree centigrade for one hour. The welding
must be carried out under short arc and is suitable
for narrow path.
When used DC, the electrode must be connected with
positive polarity.
|
