10
3.9 Arc ending
Usually there is a crater at the end of welding. It is due to the arc pressure and condensing shrinkage of
melted metal. The higher arc, the more crater. the arc ending function will fill up the crater by arc ending
current (less than 40%-70% of welding current) and improve the welding quality.
3.10 Soft wire feeding
In order to get the satisfying welding quality, the machine feed the wire at preset low speed before wire
touch the work piece. The speed will reach the normal level after striking arc. It means striking arc fail if
the current is not detected during this stage. This kind of striking arc mode can improve the success of
striking arc and ensure the reliable and stable arc.
3.11 Burn back time
When the trigger of torch is switched off, the wire feeding will continue because of inertia. So the wire will
go out to the top end of torch after the welding. It will cause the stick of wire to the work piece, thus bring
the difficulty to the next welding. The burn back is set in the machine to solve this problem. The machine
will keep output voltage during certain time to keep wire burning.
3.12 Waveform control
It means electronic reactor. It can adjust wire burning power by changing the current changing speed,
and reduce the spatter.
3.13 Ball cutting
Usually there is a big droplet at the end of wire after welding. And slag will stick on the low surface of the
droplet. It will cause difficulty of striking arc. The ball cutting circuit is designed to cut the droplet
automatically after welding.
3.14 Post-gas
3 seconds post-gas time is set to protect the welding area after welding.
3.15 Remark & sign
Ground
HGMIG/MAG Welding
AC 3-phase Power Supply, the Rated Frequency is 50Hz.
3-phase Transformer—Rectifier
Direct Current
+ : Current output positive pole
- :
Current output negative pole
X: Duty Cycle
I1max...A: Rated Maximum Input Current
I1eff...A: Maximum Virtual Input Current
I2: Rated Welding Current
U0 ...V: Rated No-load Voltage
U1 ...V: Rated Input Voltage
U2: Conventional load voltage
~50/60Hz: AC, Rated Frequency = 50Hz
，
Can use frequency 60Hz.
...V: Voltage Unit (Volt)
3 ~ 50Hz
~
3
