Arc Welding Introduction2: Difference between revisions
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This is the content required for an introduction to our [[Einhell BT-GW 150|inert gas welding machine]] - '''reading this does NOT replace the mandatory session with a [[tutor]]!''' It will make it a lot quicker though ;-) | |||
If you need this Introduction, please reach out to the following tutors: [[Tutor::User:Lukas|Lukas]], [[Tutor::User:Marcel|Marcel]], [[Tutor::User:Johannes|Johannes]] | |||
Let's begin! First off, make sure you have read the machine's [[Einhell BT-GW 150|wiki page]]. | |||
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| [[File:danger - heat.svg|50px]] extreme heat | | [[File:danger - heat.svg|50px]] extreme heat | ||
* splattering molten metal | * splattering molten metal | ||
*workpiece heats up a lot | *workpiece heats up a lot | ||
* | *welding gun, and wire also heat up | ||
|| | || | ||
* make sure there are no gaps in your [[PPE|personal protection]], e.g. between pants and shoes or jacket and gloves | * make sure there are no gaps in your [[PPE|personal protection]], e.g. between pants and shoes or jacket and gloves | ||
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* Sparks can ignite combustible material | * Sparks can ignite combustible material | ||
* workpiece can reach auto ignition temperature of its coating or residues | * workpiece can reach auto ignition temperature of its coating or residues | ||
* | * welding gun is hot after welding and might ignite stuff | ||
| | | | ||
* remove all easily combustible materials from your work area | * remove all easily combustible materials from your work area | ||
* make sure your workpiece is clean | * make sure your workpiece is clean | ||
* know where the nearest [[Fire Extinguisher|fire extinguisher]] is located | * know where the nearest [[Fire Extinguisher|fire extinguisher]] is located | ||
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|| reduce the chances of electric accidents:<sup> [https://www.bghm.de/fileadmin/user_upload/Arbeitsschuetzer/Gesetze_Vorschriften/Informationen/209_010.pdf]</sup> | || reduce the chances of electric accidents:<sup> [https://www.bghm.de/fileadmin/user_upload/Arbeitsschuetzer/Gesetze_Vorschriften/Informationen/209_010.pdf]</sup> | ||
* make sure you are isolated (proper dry gloves, shoes and/or floor mat) from the workpiece, especially do not touch the electrode and the workpiece simultaneously | * make sure you are isolated (proper dry gloves, shoes and/or floor mat) from the workpiece, especially do not touch the electrode and the workpiece simultaneously | ||
* unplug the welding | * unplug the welding machine when not in use | ||
* if you use a cable drum, make sure to unwind it completely - a wound cable drum will induce current and heat up the cables, which may lead to a molten cable coat with high risk of a exposed mains wire | * if you use a cable drum, make sure to unwind it completely - a wound cable drum will induce current and heat up the cables, which may lead to a molten cable coat with high risk of a exposed mains wire | ||
* in case of electric shock, always make sure to visit a doctor! | * in case of electric shock, always make sure to visit a doctor! | ||
|- | |- | ||
| | | always turn off the inert gas after use, as leakage accurs || | ||
|} | |} | ||
== Suggested Reading == | == Suggested Reading == | ||
These websites may also be interesting: | These websites may also be interesting: | ||
* ''[https://www.bghm.de/arbeitsschuetzer/fachinformationen/schweissen-und-verwandte-verfahren/ BGHM: Schweißen und verwandte Verfahren (DE)]'' - detailed safety information | * ''[https://www.bghm.de/arbeitsschuetzer/fachinformationen/schweissen-und-verwandte-verfahren/ BGHM: Schweißen und verwandte Verfahren (DE)]'' - detailed safety information |
Latest revision as of 22:19, 18 March 2024
This page is INCOMPLETE and still missing some important information before it can be used as a resource. Please use the "Discussion" feature above or talk to one of the tutors if you would like to help improve it. Thanks!
This is the content required for an introduction to our inert gas welding machine - reading this does NOT replace the mandatory session with a tutor! It will make it a lot quicker though ;-)
If you need this Introduction, please reach out to the following tutors: Lukas, Marcel, Johannes
Let's begin! First off, make sure you have read the machine's wiki page.
Safety
- Make sure you cover yourself completely, there should be no exposed skin at all!
- welding jacket
- welding gloves over the jacket
- ideally also a fireproof apron against molten metal drops and as additional radiation protection
- robust shoes against glowing hot beads: sandals or sports shoes with mesh top do not provide sufficient cover
- Protect your eyes with a properly adjusted welding helmet during welding, and at least goggles when inspecting the weld or hammering & brushing off slag (it may be easiest to just wear goggles under the helmet so you can't forget them!)
Dangers | Precautions |
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CRITICAL HAZARD - extremely bright arc
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extreme heat
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fire hazard
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toxic fumes (e.g. ozone, flux components, nitrous gases, heavy metal particles)
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exposed electricity (up to 60 V DC, 100+ A)
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reduce the chances of electric accidents: [3]
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always turn off the inert gas after use, as leakage accurs |
Suggested Reading
These websites may also be interesting:
- BGHM: Schweißen und verwandte Verfahren (DE) - detailed safety information
- BGHM: Arbeitsschutz kompakt - Lichtbogenhandschweißen (DE) - nice short safety overview, "checklist" style
- five potentioal welding safety hazards
Demonstration
The tutor will show you these steps in detail:
- check welding helmet settings
- set up your work in the welding enclosure
- what way to enter best
- close gaps, e.g. with spring clamps (long-term solution needed!)
- bring a light with you, if necessary
- turn on the BOTH exhaust systems
- The trunk only ramps up to high if you temporarily obstruct the airflow
- try striking an arc and depositing metal on a scrap piece (e.g. in the shape of your initials)
- it's good to experience the often scary sensation of your first arc ignition with your tutor ;-)
- once there is a steady arc, push forward and make little circles in the weld pool to "mix" the workpiece(s) with the deposited material