Tools/TIG/induction: Difference between revisions
Content added Content deleted
imported>Stever (→TIG welder induction (TIG Mode) Level 1: First go at a full induction script for TIG) |
imported>Stever m (typos) |
||
Line 22:
* Fire hazard
** Metal sparks and radiant heat/light
** Clear area of flammable materials, be aware of solvents and
** Having fire extinguishers handy and what types are suitable
* Arc-eye hazard to you and people around you
Line 29:
** Shouting "Eyes"
* PPE - Overalls, stout shoes, gloves, mask, dust protection when needed, Cover all exposed skin or you'll regret it!
* Care with
*Gas safety
** Enclosed spaces
Line 39:
** Mild/Stainless steel only at level-1 induction
*** At level-2 aluminium and other metals are covered, TIG can weld almost anything metallic and some things that arn't
** Beware of
** Beware of lead-bearing and copper-bearing paints
* General angle grinder safety
Line 50:
* Clean up weld area - be aware of burning paint
* Clean area for earth clamp
*
** No bevel on thin materials
** Regular 2/3rds bevel most of the time
**
|-
|}
Line 64:
* Fire hazard
** Largely as for MIG/MMA
** Clear area of flammable materials, be aware of solvents and
** Having fire extinguishers handy and what types are suitable, TIG uses a higher voltage so avoid water type
* UV Hazard
Line 74:
** Mild/Stainless steel only at level-1 induction
*** At level-2 aluminium and other metals are covered, TIG can weld almost anything metallic and some things that arn't
** Beware of
** Beware of lead-bearing and copper-bearing paints
* Cleaning must be immaculate, much better than for MIG as TIG gas provides no fluxing action at all
** Clean up weld area - be aware of burning paint
** Clean area for earth clamp
**
|-
|}
Line 171:
** Power and overheat lights - Duty cycle, 100%@90A, 60%@115A, 20%@200A but max is about 120A on 13A plug
** Process
*** Lift-TIG - Hard to use, not covered at level-1, only useful if
*** HF-TIG - Standard mode, use this
*** Stick - See TIG Welder (Stick mode) Induction, beware that going into stick mode - even momentarily - will cause the electrode to become live at up to 90V with no control from the trigger
Line 188:
| PPE safety ||
* Overalls are required for UV protection
* We have special TIG gloves that are
* Depending on the welding current you may want to use shade 9-12 on the welding helmet. All settings will save your vision, you're just adjusting for best visibility. If you're used to MIG/MMA then go one setting darker than you normally would for this current
* You may see people online welding without overalls or even without gloves. They can get away with this because of the low-spatter nature of TIG welding. DO NOT DO THIS - They are probably wearing SPF-1000 sunblock and have developed a tolerance over years, they'll still probably wind up getting skin cancer from it! Cover all exposed skin at all times while welding.
Line 228:
| Arc too long || Puddle is slow forming, arc sounds/looks like a flame, heat zone very large || Having the arc too far away is causing the voltage to go too high and meaning the heat is spread over too wide an area
|-
| Arc too short || Puddle is tiny, pool rises up to touch electrode || Having the arc too short focuses the heat onto too small an area which will make it hard to join workpeices, the short arc causes the pool to actually dome upwards and move towards the electrode.
|-
| Angle too steep || Large flame-like arc, elongated puddle, difficulty controlling filler rod || The steep angle causes the arc to spread out sideways and fail to remain directly under the point of the electrode, the heat spreads too far down-weld of the torch changing the puddle shape and the plasma jet tends to melt filler rods before they can get to the pool.
Line 292:
| Lap joint ||
* Lack of need for grinding but must still be cleaned
* Treat
** But watch out for heat buildup in the edges and undercutting
** Extra care if the sheet is thin to watch for balling up
* Alternating stitch welds to control distortion
| |||