Final answer:
Die casting offers advantages over sand casting such as a (A) better surface finish, (B)closer tolerances, (D)higher production rates, and the (F) ability to reuse molds. However, it is not suitable for larger parts or metals with higher melting temperatures.
Step-by-step explanation:
The question compares the advantages of die casting over sand casting. Die casting is a manufacturing process that involves injecting molten metal under high pressure into a mold or die. Sand casting, on the other hand, involves creating a mold from sand and pouring the molten metal into this mold without the high pressure. Die casting provides several advantages over sand casting. These include:
Better surface finish: Die casting typically results in products with smoother surfaces compared to those produced through sand casting, as the high pressure creates more detailed surface replication.
Closer tolerances: Die casting can achieve tighter tolerances, meaning the parts produced are more consistent and require less machining after casting.
Higher production rates: Due to its nature, die casting is conducive to high-volume production runs, which increases efficiency and output.
Mold reuse: The dies in die casting are made from hardened steel and can be used to produce a large number of castings before they need to be replaced, unlike sand molds, which are typically destroyed after one use.
It is important to note that die casting is not suited for casting larger parts (E) or for higher melting temperature metals (C) due to equipment limitations and the thermal stresses involved. Therefore, sand casting may be preferred for these specific applications. Please provide the correct option where the advantages of die casting over sand casting are: (A) better surface finish, (B) closer tolerances, (D) higher production rates, and (F) mold can be reused.