Section 1
Questions
What the common non-ferrous metals?
Why is lap joint not recommended for aluminium?
What is the basic difference between welding ferrous and non-ferrous metals?
What oxyacetylene flame is used for welding:(i) Aluminium.(ii) Brass.(iii) Copper.(iv) Nickel.(v) Magnesium.
Discuss the metallurgical behaviour of aluminium during welding.
What are the most commercial welding processes for joining aluminium?
What fluxes are used for welding aluminium and its alloys?
Why is deoxidized copper preferred for welding?
What leads to embrittle nickel fusion welds?
What precautions are used for welding magnesium?
Why inner tip of inner cone should always touch the magnesium to be welded?
Describe technique to weld aluminium castings?
What are the most common solutions used for chemical cleaning and surface treatment of magnesium alloys ?