DESCRIPTION
This is a rutile basic coated electrode used for SS and welding repairs of any type of alloy steel components like shafts, impellers and heat resistant steel. This has 30% Cr and 10% nickel and extra low carbon variety with carbon content of only 0.03%. This has got more than 40% ferrite structure and successfully welds any unknown compositions. The structure is highly resistant to hot cracking and extremely tolerant of dilution from medium and high carbon steel.
TENSILE STRENGTH
550 to 650 Mpa (115000 psi). Elongation: 24%
APPLICATION
Azucar 312 is a universal electrode specifically designed for welding steels of low weld ability. This is suitable for welding austenitic manganese steel, medium and high carbon hardenable steels which may be of unknown composition. This is also used for crack sensitive joints, built up of shafts or for repair of load bearing areas like sugar rollerjournal.
TECHNIQUE
Before application the surface needs to be cleaned of fatigued deposits oil grease etc. The joints needs to be prepared and in some cases a preheat of 200″ C is recommended for certain high alloy steel. Porosity is more common in fillet welds than in butt welds where pores only occur at high moisture content.
RECOMMENDED AMPERAGE
4.00mm X 350mm – 110 to 150 Amps.
Polarity DC + AC 70 OCV min.
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