welding methods for metals Flashcards
what are the three welding methods
mig
tig
spot
what does mig used
metal inert gas
what is mig used for
weld fairly thin metals together
what is mig commonly used for
weld mild steel
especially sheet, tubes and box sections
what is the process of mig
heat is generated by electric arc
a wire filler material (also made of steel) is fed through the welding gun as the operator pulls the trigger
what is the purpose of inert gas in mig
shielding that prevents the metal from oxidising at the joint area
what is mig used for
cahir
bike frames
tables
car exhaust
playground equipment
what can the inert gas be in mig
co2
argon
what does tig mean
tungsten inert gas
what is tig used for
stainless steel
non - ferrous metals
what is an example of non - ferrous metals
aluminium
what are the advantages of tig
greater control
more accurate
stronger welds can be made
what is the required skill level for tig
high level of skills and it is slow
what is tig used to make
aluminium / titanium bike frames
stainless steel swimming pool ladders
what is the process of spot welding
the electricity flow around the circuit, where the pieces of metal are joined, there is an increase in resistance which leads to a build up of localised heat - enough to fuse the two pieces together
