Miller Dialarc HF
TIG (Tungsten Inert Gas) welding is particularly useful for aluminium, It uses an electrode nozzle with a fixed (should be permanent, but they do wear) tungsten tip where a plasma 'flame' is created (started with a high-voltage / high freequency starter) and used to heat the filler wire and joint. The nozzle allows a flow of inert shield gas around the working area, reducing slag creation and (particularly important with aluminium) oxidation.
The TIG welder is a 'stick' welder - the electrode / nozzle is held in one hand, and the filler wire applied with the other.
Shield gas
For the TIG we use a Pureshield Argon.
Capacity and rating
The Tig welder has a large range
Controls
Details on the front panel controls
Name
|
Picture
|
Description
|
Main On Off Swtich |
|
Main switch on the welder, remember to turn off the welder as much as possible in-between setting up for welds
|
DC+ AC DC- selector |
|
Do not change this setting with the main power switch ON. This selector has three positions that control the mode of the welder
- DC- (DCEN), DC Electrode Negative, used for Steel TIG
- AC, used for Aluminium TIG
- DC+ (DCEP), DC Electrode Positive, used for Arc
|
Working power range selector |
|
Do not change this setting with the main power switch ON. There are three possible working ranges, low, medium and high. Each has a slightly different range for DC or AC
Position
|
AC
|
DC
|
Up |
140-310 |
125-310
|
Middle |
40-165 |
40-190
|
Down |
10-45 |
10-55
|
|
Percentage power dail |
|
Main power control dial, used to fine tune the amp control of the welder. This dial acts as a percentage of the current selected range.
|
Remote amp control enable |
|
Used to enable remote amperage control when a foot control is installed. Until we have a remote foot pedal this should be left in the OFF position.
|
High Frequency control |
|
Controls the high frequency generation of the welder, this switch has three positions and each has a set use.
- Up (IO) High frequency start, use this for DC TIG welding (Steels)
- Middle (O) Off used for Stick welding
- Down (I) On, used to AC Tig welding (Aluminum)
|
Remote trigger enable |
|
This should be left in the ON position. Used to enable the remote trigger, only place in OFF position when doing Arc welding
|
Gas overrun timer |
|
Controls how long after arc cut off the gas will run for. Outer scale is tungsten width, inner scale is time in seconds
|
Tungsten and collets
We have a selection of the following tungsten tips and collets to fit
Size
|
Color band
|
Used for
|
1.6mm
|
Red
|
DCEN Steel
|
2.4mm |
Red |
DCEN Steel
|
1.6mm |
White |
AC Aluminium
|
2.4mm |
White |
AC Aluminium
|
1.6mm |
Gold |
AC or DCEN, All rounder Steel or Aluminium
|
2.4mm |
Gold |
AC or DCEN, All rounded Steel or Aluminium
|
Grinding tip shapes
Filler rods
We have the following stock of filler rods
- Steel
- Stainless steel
- Aluminium
- Copper
Power supply
A 63A plug and socket connection is used, with a pushbutton on/off control station and no-volt release.
RFID control of access will be installed shortly.
Tig welding tips
Random collection of useful links