9. Why are brass welds generally cooled in water as soon as fusion is completed?
10. Why is it difficult for the beginner to weld heavy pieces of brass?
LECTURE NUMBER FIFTEEN
Subject—Welding of Malleable Iron
1. (a) Can malleable iron be successfully welded?
(b) What is the most successful method of joining two pieces of malleable iron?
2. What are three methods of detecting malleable iron?
3. (a) What kind of “filler-rod” is used on malleable iron?
(b) Are “filler-rods” of malleable iron satisfactory?
(c) What kind of flux is used on malleable iron work?
4. (a) How is a malleable iron casting prepared for welding?