Ronch Ronch Weld 200TIG, Руководство пользователя

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8. POSSIBLE PROBLEMS IN WELDING
PROCESS
1. Black welding spot
This means the welding spot is oxidized without effective protect. You can check as below:
1) Ensure the valve of the Argon gas tank is open, and with enough pressure. In
general, when the inside pressure of a tank lower than 0.5Mpa, you should change
the tank
2) Check if the Argon flow is open and if the flow is enough. To save the gas you can
choose different flow according to different welding current. But if the flow is too
weak, the welding spot will not be covered wholly.
3) It will cause the problem of welding quality if the gas circuit is bad sealed or the
purity of the gas is not high.
4) The welding quality will be reduced if the machine is used in the place with strong
air flow.
2. Hard to start the arc and the arc is easy to be broken.
1) Ensure the quality of the tungsten electrode is good.
2) Tungsten electrode without processed will caused the unsteady arc. Before
welding work, the arc end of the electrode should be processed to conical.
3. The output current can’t reach to the rated value
The power voltage is different from the rated value will cause the inconsistency between the
output current and rated current. When the power voltage lower than rated value, the max
output current maybe lower than rated value.
4. The current can’t be keep stable in welding process
1) Maybe caused by the change of network voltage;
2) Maybe caused by the interference of the network power or other electric-used
equipments.
5. Strong splash when use MMA function
1) Maybe the welding current is too large, and the electrode’s diameter is two small.
2) Reverse connection of the output. In general, the electrode should be connected
to the positive output, and the workpiece be connected to the negative output.