Tig Welding
PROCEDURES
* Bring out the MIG welder for a MIG welding. * Make sure the MIG welder is functional and in a good condition. | | * Installing the wire and look after the wire feed and spool * Check that the feed rollers are clean,oil-free and match the wire diameter in use * Wire feed is the most common cause of MIG welding problems so check it properly. | | * Set roller pressure and wire spool drag so that with the torch trigger down and the feed rollers turning,you can just brake the moving wire to a stop with your fingers | |
* Open the main valve of the cylinder and make sure that the there is some gas in it. * Your gauge should be reading between 0 and 2500 PSI in the tank and the regulator should be set between 15 and 25 PSI depending on how you like to set things up and the type of welding torch you are using. * Without the gas your welds will look brown and splattered. | | * Adjust welding voltage by increasing voltage makes the arc progressively longer and wider so it heats a bigger area. * Aim for a voltage which will give good penetration and fusion in the particular joint. | | * Adjust wire speed by welding current rises with wire feed speed until the wire can carry no more,at which point extra speed just puts more filler into the joint. * The aim is to bring feed speed into balance with voltage,so filler wire is burnt off tidily and welding current matches the work. | |
* Check the MIG gun is functional and in a good condition. * Now we can start our project. | | * Make sure that your welder is properly attached to a power source and to a shielding gas source. * Push the welder’s control trip or trigger.This should start wire feed and cause the shielding gas to flow. | | * Keep the contact tip steady,and slowly guide it along the material you’re welding. * Try to maintain the same distance between the contact tip and the welding material | |
* Hold the mig welder at
* Bring out the MIG welder for a MIG welding. * Make sure the MIG welder is functional and in a good condition. | | * Installing the wire and look after the wire feed and spool * Check that the feed rollers are clean,oil-free and match the wire diameter in use * Wire feed is the most common cause of MIG welding problems so check it properly. | | * Set roller pressure and wire spool drag so that with the torch trigger down and the feed rollers turning,you can just brake the moving wire to a stop with your fingers | |
* Open the main valve of the cylinder and make sure that the there is some gas in it. * Your gauge should be reading between 0 and 2500 PSI in the tank and the regulator should be set between 15 and 25 PSI depending on how you like to set things up and the type of welding torch you are using. * Without the gas your welds will look brown and splattered. | | * Adjust welding voltage by increasing voltage makes the arc progressively longer and wider so it heats a bigger area. * Aim for a voltage which will give good penetration and fusion in the particular joint. | | * Adjust wire speed by welding current rises with wire feed speed until the wire can carry no more,at which point extra speed just puts more filler into the joint. * The aim is to bring feed speed into balance with voltage,so filler wire is burnt off tidily and welding current matches the work. | |
* Check the MIG gun is functional and in a good condition. * Now we can start our project. | | * Make sure that your welder is properly attached to a power source and to a shielding gas source. * Push the welder’s control trip or trigger.This should start wire feed and cause the shielding gas to flow. | | * Keep the contact tip steady,and slowly guide it along the material you’re welding. * Try to maintain the same distance between the contact tip and the welding material | |
* Hold the mig welder at
References: * Welding books. * Internet * Through a friend and senior students