Question

Which of the following processes is used for shaping metal by pressing it into a mold under high pressure?

• A. Casting
• B. Forging
• C. Extrusion
• D. Injection molding

Hint:

Injection molding is commonly used to create complex shapes by injecting material into a mold under high pressure, offering high precision and repeatability.

Answer 1

The Correct Option is D

Step 1: Understanding the shaping process
Injection molding is a manufacturing process used for shaping metal or plastic by pressing the material into a mold under high pressure. This method is commonly used for producing precise and complex parts in high volumes.
Step 2: Difference from other processes
- Casting involves pouring molten metal into a mold and allowing it to cool and solidify, but it does not necessarily involve high pressure. - Forging is a process where metal is shaped by compressive forces, usually applied at high temperatures, but it does not typically use molds. - Extrusion involves forcing material through a die to create a long, continuous shape, which differs from molding.
Step 3: Importance of injection molding
Injection molding is widely used in manufacturing industries for its efficiency in producing high-precision, repeatable metal and plastic parts.