Exploring Metalworking Techniques

What is the primary purpose of machining in metalworking?

• To add color to metal surfaces.

• The primary purpose of machining in metalworking is to shape and finish metal parts by removing material.

• To increase the weight of metal parts.

• To weld metal components together.

Describe the turning process in metalworking.

• Turning is a process where a workpiece is fixed and the cutting tool rotates around it.

• Turning is a machining process that involves rotating a workpiece while a cutting tool removes material to shape it.

• Turning involves heating metal until it melts and then shaping it.

• Turning is a method of welding two pieces of metal together using a rotating tool.

What is the main difference between milling and turning?

• Turning uses a rotating tool on a stationary workpiece, while milling uses a stationary tool.

• Milling uses a rotating tool on a stationary workpiece, whereas turning uses a rotating workpiece with a stationary tool.

• Milling and turning both use rotating tools on stationary workpieces.

• Milling is primarily used for drilling holes, whereas turning is used for shaping flat surfaces.

What does MIG stand for in welding techniques?

• Metal Inert Gas

• Metal Inert Gear

• Molecular Inert Gas

• Metal Ion Gas

How does TIG welding differ from MIG welding?

• TIG welding is faster than MIG welding.

• TIG welding uses a non-consumable electrode and offers more control, while MIG welding uses a consumable wire and is faster.

• TIG welding requires more filler material than MIG welding.

• MIG welding uses a non-consumable electrode.

What is the role of filler material in welding?

• To reduce the heat during welding.

• To improve the color of the weld joint.

• To act as a protective coating for the weld.

• The role of filler material in welding is to provide additional material to fill gaps and strengthen the weld joint.

Explain the sand casting process in metalworking.

• The sand casting process is a metalworking technique that involves creating a mold from sand, pouring molten metal into the mold, and allowing it to cool to form a solid object.

• The process includes melting metal in a furnace and pouring it directly into a water bath.

• Sand casting requires the use of high-pressure machines to mold the metal.

• The sand casting process involves using water to shape the metal.

What are the advantages of using sand molds in casting?

• High durability but expensive

• Limited design flexibility

• Poor thermal conductivity

• Advantages of using sand molds in casting include cost-effectiveness, ease of shaping, good thermal properties, reusable nature, and ability to provide a good surface finish.

Name one common application of welding in industry.

• Assembly of furniture

• Manufacturing of electronic devices

• Production of textiles

• Construction of buildings and bridges

Why is it important to protect the weld pool during welding?

• To increase the temperature of the weld pool.

• To allow for faster cooling of the weld.

• It is important to protect the weld pool to prevent contamination and ensure a strong, defect-free weld.

• To enhance the color of the weld pool.