Question

What are the terms used during the Cire-perdue process?
(A) Slip
(B) Core vents
(C) Sprue
(D) Ducts
(E) Claw
Choose the correct answer from the options given below:

• A. (A), (B) and (E) only
• B. (D) and (E) only
• C. (A) and (D) only
• D. (B), (C) and (D) only

Hint:

Think of the lost-wax mold as a plumbing system for molten metal. Sprues are the main pipes, ducts are the smaller pipes, and vents are the exhaust system for gases.

Answer 1

The Correct Option is D

Step 1: Define the terms in the context of Cire-perdue (lost-wax casting).

(A) Slip: This is a term for liquid clay used in ceramics, not typically in metal casting.
(B) Core vents: These are channels made through the core to allow gases to escape during the pouring of molten metal, preventing bubbles and defects.
(C) Sprue: This is the main channel through which molten metal is poured into the mold.
(D) Ducts: These are smaller channels that guide the metal from the sprue to various parts of the mold cavity.
(E) Claw: This is a type of chisel or sculpting tool, not a term for a part of the casting process itself.

Step 2: Identify the relevant terms. Core vents, sprues, and ducts are all essential components of the investment mold used in the lost-wax process. Therefore, (B), (C), and (D) are the correct terms.