17
Current Adjustment Instruction
Welding current
Arc welding current refers to value of constant current when whelding without pulse, and at the same
time refers to the pulse argon arc welding of pulse peak electric current.
Base Current
Base current means the minimum current in the pulse current welding. In the base current time, the arc
has the smallest quantity of heat, so the work piece has the ability to transfer away the quantity of heat
in the melted bath, got in the peak time.
Pulse frequency
Pulse frequency refers to the pulse argon arc welding state, the current adjust speed rate between
welding current and base value current.
Duty ratio
Duty ratio is welding peak current’s ratio during one cycle time under pulse argon arc welding
condition. Duty ratio in the range of 15-85% is adjustable. Such as: the frequency of 5 Hz (its pulse
cycle is 200 ms) of pulse current in each cycle of welding current peak time is 80 ms, so, the duty ratio
of pulse are as follows: 80÷200×100% = 40%.
The current slow rise time
Current slow rise time refers to the time of from starting arc current to normal current for welding. It uses
to slow down the current rising rate.
The current slow down time
Current ramp down time refers to the time of from the welding current dropped to reap arc current. It
slows the rate of decline in current and electric current to slow down, gradually submerged arc pit,
ensure the quality of welding at the end of the welding.
Gas pre-flow
It refers to setting a suitable gas delivery time before the arc ignition in advance. It can ensure the
starting point of the molten pool is not oxidation.
Gas stopping delay time
Gas stopping delay time means the protection gas feeding time value after the arc winked to protect
the work piece away from the oxidation. Its very necessary to continue feeding the protection gas into
the melted bath after the welding finished, as the melted bath still needs some cooling time, as though
the winked arc could not heat the work piece any more. This welder set inside to be about 5s
(changeable according to customer’s requirements).
Summary of Contents for TIG 200 pulse
Page 22: ...24 Explosive view ...
Page 53: ...55 Κατάλογος ανταλλακτικών ...
Page 79: ...81 Sklopni crtež rezervnih delova ...
Page 105: ...107 Sklopni crtež rezervnih delova ...
Page 129: ...131 Skica notranjosti naprave ...