Instruction and Application: Low hydrogen - type medicine leather copper welding core electrode.Arc stable, forming good, DC reverse.It is suitable for welding of conductive copper, copper heat exchangers, Marine ducts and other structural parts, and can also be used for surfacing of carbon steel parts.
Typical Chemical Composition of the wire(％)
|
Cu |
Si |
Mn |
P |
Pb |
|
97.5 |
0.25 |
2.0 |
0.02 |
0.005 |
Mechanical properties of all-weld metal
|
Temperature |
Tensile strength Rm(MPa) |
Elongation A(%) |
Bending D=4t,180o |
|
Room temperature |
195 |
30 |
Qualified |
Reference Current(DC+)
|
Size φ（mm) |
Φ2.5 |
Φ3.2 |
Φ4.0 |
|
Welding current(A) |
50~70 |
90~110 |
120~160 |
Notice:
1. Redry the flux before welding at 200℃ for 1hours.
2. The welding surface rust, oil fouling and other impurities must be cleaned up.
3. In general, the preheating temperature should be between 400-500oC.
4. Short arc should be used when welding, and reciprocating linear motion should be used.
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