Svarog PROTIG -PIII Series, Owner'S Manual

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selection of proper duty ratio will be able to well meet the needs of the concrete.Pulse welding current is
to strengthen the mixing of molten pool, to minimize the pores.Under the same line energy, dc pulse arc
than dc constant current arc penetration is big, pulse current of coagulation, form and normal form is
different, it can improve the mechanical properties of a particular joint.Properly adjusting the parameters
of the pulse and the welding speed, smooth dc pulse argon arc welding can form uniform and
controllable fusion zone (scales).
CURRENT ADJUST DESCRIPTION
Welding current
Arc welding current refers to the "hand/argon arc" mediation function mode the size of the welding
current, refers to the pulse welding at the same time, the current in the largest value.At this time of the
arc heat is big, the workpiece heated, it is used to welding.
background current
Base value is to point to in the pulse electric current welding current, the value of the current in the
hours.When current is small, small arc heat and artifacts have the ability to when the welding current is
working to heat transfer of molten pool, thus reducing due to local overheating deformation.
Pulse Frequency Modulation
Pulse frequency refers to the pulse argon arc welding state, the current in the welding current and base
value current switching between speed and frequency of 0.5 ~ 25.0 Hz.
pulse width regulating
Pulse welding current pulse width at a ratio of the pulse cycle time (that is, the duty ratio), the duty cycle
adjustable in the range of 0 ~ 100%.Such as: the frequency of 5 hz (its pulse cycle is 200 ms) of each
welding current in the pulse current time is 80 ms, so, the pulse width is: 80÷200×100% = 40%.
rise time
From above freezing to rise time refers to the current time value of the welding current is used to.It to
slow down the current rising rate, current slow rise, gradually melted the artifacts, ensure that when the
welding current will suddenly increase has reached the welding technological requirements, time of 0 ~
10 s.
fall time
Fall time is refers to the current from the welding current dropped to zero value all of our time.It to slow
the rate of decline in current and electric current to slow down, gradually submerged arc pit, ensure the
quality of the welding at the end of the time of 0 ~ 10 s.
pre-airing time
Pre aeration time refers to the welding at the start of the shielding gas before working circuit, high
frequency arc used to rule out there in the air in the gas pipeline, prevent bad arc instantaneous gas
oxidation defects, and time is 0.3 ~ 10 s.
postflow time
postflow Time "means after the arc extinguishing, to protect the workpiece is not protected by oxidation