1 Which of the following names are applied to a process in w

1. Which of the following names are applied to a process in which a molten metal is poured into a heated lower die, and the upper die is closed to create the mold cavity only after solidification begins (two correct answers): (a) liquid-metal casting, (b) liquid-metal forging, (c) rheocasting, (d) squeeze casting, or (e) thixocasting?

2. Which one of the following is the name of the casting process in which molten metal is poured into a rotating mold to produce a tubular part: (a) centrifuge casting, (b) semicentrifugal casting, or (c) true centrifugal casting?

3. An irregularity in the surface of the casting caused by erosion of the sand during pouring is called which one of the following sand casting defects: (a) penetration, (b) sand blow, (c) sand wash, or (d) scabs?

Book:Fundamentals of modern manufacturing 5th edition

Solution

1) The process in which a molten metal is poured into a heated lower die, and the upper die is closed to create the mold cavity only after solidification beginsis called as \" Squeeze Casting\" or \"Liquid Metal Forging\". The answers are option (b) and (d).

2) The casting process in which molten metal is poured into a rotating mold to produce a tubular part is called \"True Centrifugal Casting\". The answer is option (c).

3) An irregularity in the surface of the casting caused by erosion of the sand during pouring is called \"Scab\". The answer is option (d)