The electrodes have a coding system to identify them.
Identification tig welding filler rod chart pdf.
Either running straight or with a side to side motion the arc needs to be maintained on the leading edge of the puddle.
Welding rods are available in different amounts and it s a good idea to.
The most common rod for stainless steel is 308 which works for base metals that are classified as either 304 or 308 using the aisi standard.
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Filler metal is selected for a specific application.
A commonly used electrode for mild steel is er 70s 2 er stands for electrode or filler rod.
Although stick welding is primarily used on carbon steel you can purchase rods to weld some stainless steels and aluminum.
6correct torch and rod positioning selecting the correct torch nozzle gas lens benefits typical manual gta tig welding parameters aluminum titanium magnesium stainless steel deoxidized copper low alloy steel trouble shooting guide for gta tig welding excessive electrode consumption erratic arc inclusion of tungsten or oxides in weld.
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Tig stands for tungsten inert gas named from the tungsten electrode and the shield of inert gas argon or argon mixture surrounding it.
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Table of contents tig torch connection diagrams gas cooled torches 3 water cooled torches 3 characteristics of current types for tig welding dc straight polarity 4 dc reverse polarity 4 ac high frequency 4.
The base material and filler metal cross reference guide suggestions are based on joining of the same material to itself.
These factors include but are not limited to the type of steel type of weld loading on the welded joint applicable codes level of preheat level of restraint position of welding condition of the steel and service conditions.
With tig welding the filler wire is always added to the joint with the opposite hand which gives you full control over the deposit rate and weld size.
In the vertical position 7018 is run uphill.
Puddle to work with.
7018 required better rod control but does provide the strongest weld for heavy stress situations and also the smoothest weld for ornamental type products.
When joining different material specifications grades classes and or types together engineering and fabrication judgment must be used in the application s the information contained or otherwise referenced herein is presented only as typical without.
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