Project ForgeMatch the items in Column I and Column II. Column I — P: Metallic Chills, Q: Metallic Chaplets, R: Riser, S: Exothermic Padding. Column II — 1: Support for the core, 2: Reservoir of the molten metal, 3: Control cooling of critical sections, 4: Progressive solidification.
- AP-1,Q-3,R-2,S-4
- BP-1,Q-4,R-2,S-3
- CP-3,Q-4,R-2,S-1
- P-4,Q-1,R-2,S-3
Explanation
Metallic chills accelerate local cooling to help achieve progressive/directional solidification toward the riser (P-4). Metallic chaplets are small metal supports that hold the core in position within the mould cavity (Q-1). A riser is a reservoir of molten metal that compensates for shrinkage (R-2). Exothermic padding generates heat to slow/control the cooling of critical (thick, hard-to-feed) sections (S-3).
Source: GATE ME 2009 (2009)
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