Metals Processing Worksheet

What is the main topic introduced in the provided material?

• Metals processing

• Food processing

• Textile manufacturing

• Plastic recycling

What does the casting process involve?

• Pouring molten metal into a mold that solidifies into a specific shape

• Cutting metal sheets into desired shapes

• Welding two metal pieces together

• Cooling metal in open air

Why might casting be chosen for manufacturing both small and large products?

• Because it is applicable to small or large products

• Because it is only suitable for large products

• Because it is only suitable for small products

• Because it is not economical

Why might sand casting be chosen for a project that requires frequent design changes?

• It allows for easily made design changes

• It produces the finest surface finish

• It has the fastest cooling rate

• It is the most expensive method

Which statement best explains why sand casting results in relatively large grain size?

• The cooling rate is relatively slow, allowing grains to grow larger

• The sand mold is very fine, restricting grain growth

• The process uses high pressure to compact the grains

• The metal is poured at a very low temperature

What is a key characteristic of investment casting regarding the types of metals that can be used?

• Only aluminum can be cast

• Only ferrous metals can be cast

• No limit to cast metal composition

• Only non-ferrous metals can be cast

Which of the following best describes the surface finish achievable with investment casting?

• Rough surface finish

• High surface finish possible

• Medium surface finish

• No surface finish control

Based on the diagram, which step involves pouring molten metal into the mold?

• Step 5

• Step 7

• Step 8

• Step 10

Which property is improved in permanent casting due to faster cooling rates and smaller grain size?

• Electrical conductivity

• Mechanical properties

• Color

• Weight

Which of the following is a key component used to open and close the mold in the Permanent Mold Casting Process?

• Hydraulic cylinder

• Electric motor

• Pneumatic pump

• Manual lever