Enter Arc Energy. Arc energy is the heat produced by
the welding arc, it is equal to the welding current times the welding voltage
divided by the travel speed. The actual current and voltage should
be measured during welding along with the travel speed in mm/sec.
Select welding Process. The heat input is the arc energy
going into the parent metal. It is calculated by multiplying the Arc energy
by an efficiency factor specific to the welding process.
Enter Carbon Equivalent. The CE must be based on the
IIW formula shown below. The program will calculate it for you if
the base metal composition is known.
Select Hydrogen Scale. Diffusible hydrogen content
is split into 5 groups:-
15 ml/100g No hydrogen control!
B, 10 < 15 ml/100g
C, 5 < 10 ml/100g
D, 3 < 5 ml/100g
MMA using Rutile or Cellulose covered electrodes use scale
A. MMA using Basic coated electrodes is capable of up to scale D if the
electrodes are baked and stored in accordance with the makers recommendations.
MIG/MAG Normally scale C, but if the welding wire is clean scale
D is possible. TIG welding scale D. Scale E requires special
Enter the combined thickness of the joint. Consider
the thickness of all paths taking heat from the weld. For example:- The
combined thickness for a butt weld between two plates of the same thickness
will be twice the base metal thickness, for a T fillet weld three times
When all data has been correctly entered click the calculate