Upslope Voltage/ Wire Feed Speed Ramp-Up; Downslope Voltage/ Wire Feed Speed Ramp-Down - Paton StandardMIG-160 Instruction Manual

5.6 WELDING VOLTAGE RAMP-UP FUNCTION & WIRE FEED SPEED RAMP-UP
This function is necessary for the smooth transition to welding mode at the set time [t.uP],
which reduces weld pool spatter and spatter at the moment of ignition while the wire is still
cold. The extended soft rise time is used for the initial formation of the weld pool. The
voltage rise time [t.uP] is responsible for regulating the smoothness of this process, both in
the source and in the wire feed speed control unit. For maximum correct operation, these
values must be constant (not every feeding unit has the ability to change the wire feed
speed at the end of welding).
ATTENTION!: The longer the rise time , the lower the initial weld penetration. That is why
it is only used for medium and long welds. For this reason, do not increase the time more
than 0.1 sec when tack welding, etc.
By default, the rise time is set to OFF, i.e. inactive. To change the value of any function in the current welding
ATTENTION! When welding with steel wire, the rise time [t.uP] at the source has to be
equal to or slightly lower than the rise time at the wire feeder. When welding with
aluminium wire, the rise time [t.uP] at the source must be longer (+0.2...+ 0.5 s) than the
rise time at the wire feeder.
5.7 WELDING VOLTAGE RAMP-DOWN FUNCTION & WIRE FEED SPEED
RAMP-DOWN
When the welding process nears completion, there is a risk of a crater forming at the end of
the weld bead, caused by the sudden extinguishing of the welding arc. Such a crater can
lead to various defects, including cracks or porosity. To address this, a voltage ramp-down
function has been introduced, allowing for controlled voltage reduction and wire feed rate
adjustment after welding. Users have the flexibility to set this duration [t.dn] individually.
This ensures accurate crater filling and minimizes the risk of defects in the finished weld.
To effectively conclude the welding process, releasing the button on the torch in its final
phase activates a special function. The indentation in the weld, referred to as a crater,
should be filled using reduced voltage and a decreased wire feed speed.
By default, both are set to 0.1 sec, i.e. actually in off state. This value can be changed at your own discretion, see
ATTENTION! During welding with steel wire, the reduction time [t.uP] at the source must
be equal to or slightly higher than the reduction time at the wire feeder. When welding with
aluminium wire, the reduction time [t.uP] at the source must be less (-0.3...-0.7 s) than on
the wire feeder.
These parameters are set in different situations in different ways according to the welder's requirements.
To change the value of any function in the current welding mode, see section 6.1.
mode, see paragraph 6.1.
section 6.1 for the procedure.
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PATON StandardMIG DC MMA/TIG/MIG/MAG