What is the main purpose of milling in manufacturing?
A Grinding
B Cutting
C Shaping
D Joining
Milling is a machining process where a rotating cutter removes material from a workpiece. It is mainly used for shaping parts by creating flat surfaces, grooves, and intricate designs, offering precision in size and shape.
Which process is used for permanently joining metal parts?
A Welding
B Casting
C Drilling
D Milling
Welding involves using heat to melt the edges of metal parts, allowing them to fuse together. It is commonly used to permanently join parts for structural integrity, especially in construction and manufacturing industries.
What does the term “casting” refer to in manufacturing?
A Cutting
B Grinding
C Shaping by heating
D Shaping by molding
Casting is the process where molten material, usually metal, is poured into a mold to create a solidified part. It is used to form complex shapes and is often used in industries like automotive and aerospace.
What is the main advantage of additive manufacturing?
A Speed
B Complexity
C Low cost
D Precision
Additive manufacturing, or 3D printing, allows for the creation of complex, customized parts directly from digital models. Unlike traditional manufacturing, it does not require molds or tools, making it ideal for intricate designs and prototypes.
What is the main function of a lathe machine?
A Drilling
B Grinding
C Turning
D Milling
A lathe machine rotates a workpiece against a cutting tool to remove material and shape it. It is mainly used for producing cylindrical parts and can be used for tasks like turning, boring, and facing.
What is the primary use of drilling in machining?
A Cutting
B Forming
C Boring
D Shaping
Drilling is a process used to create holes in a workpiece by rotating a drill bit. It is one of the most common machining operations used for making holes of various sizes and depths in different materials.
What type of material is usually used in powder metallurgy?
A Ceramics
B Plastics
C Composites
D Metal powders
Powder metallurgy involves using fine metal powders, which are compacted and heated to form solid parts. It is commonly used for producing parts with complex geometries and high material efficiency.
What is the main function of forging?
A Cutting
B Joining
C Shaping by pressing
D Casting
Forging uses compressive forces to shape metal into a desired form. The material is heated and then shaped by hammering or pressing, improving its strength and structural integrity by aligning its grain structure.
Which of the following processes uses abrasives to finish a part?
A Turning
B Grinding
C Casting
D Welding
Grinding is a material removal process that uses an abrasive wheel to smooth or finish a workpiece. It is often used for achieving fine surface finishes or achieving precise dimensional tolerances.
What is the function of CNC machining?
A Drilling
B Cutting
C Automation
D Welding
CNC machining uses computer control to automate the movement of cutting tools. This ensures precision, consistency, and the ability to produce complex parts automatically, reducing human error and increasing production efficiency.
What does heat treatment do to a material?
A Shapes
B Cools
C Melts
D Hardens
Heat treatment involves heating materials, typically metals, to specific temperatures and then cooling them to alter their properties. It is primarily used to increase hardness, strength, and durability of the material.
Which of these processes is used to create hollow parts?
A Molding
B Forging
C Casting
D Extrusion
Molding is used to shape materials, often plastics or metals, into specific shapes. It can create hollow parts by using molds that have cavities, making it ideal for producing items like bottles and pipes.
What is the primary purpose of surface finishing?
A Shaping
B Cleaning
C Smoothing
D Hardening
Surface finishing refers to processes like polishing, grinding, or coating to improve the surface texture of a part. It helps in enhancing the part’s aesthetic appearance, functionality, and corrosion resistance.
Which process is typically used for forming sheet metal into shapes?
A Rolling
B Stamping
C Forging
D Molding
Stamping is a metal forming process where a die is used to cut or shape sheet metal. It is commonly used in the automotive and appliance industries for producing parts like body panels and enclosures.
What does extrusion create in manufacturing?
A Continuous shapes
B Hollow parts
C Solid blocks
D Flat surfaces
Extrusion involves forcing material through a die to create continuous shapes such as bars, pipes, or profiles. It is used with materials like metals, plastics, and rubber to produce uniform shapes with minimal waste.