10 Questions
Which category of casting process allows for the production of more complex shapes but often has limited production rates due to mold-making time?
Expendable mold processes
What are some examples of big parts made by casting?
Machine frames and church bells
Which type of mold is made of metal and can be used to make many castings?
Permanent mold
What are some examples of small parts made by casting?
Dental crowns and jewelry
What are the environmental problems associated with sand casting?
Emission of harmful substances
Sand casting involves the pouring of hot molten metals into a ______ mold to create various parts
expendable
Expendable mold processes allow for the production of more ______ shapes but are often limited by the time to make the mold
complex
Permanent mold processes are advantageous for their higher ______ rates but are limited by the need to open the mold for geometries
production
Sand casting poses safety hazards to workers due to exposure to hot molten metals and can cause ______ problems
environmental
Sand casting is used to create a wide range of parts, from engine blocks and heads for automotive vehicles to small items like dental crowns and ______
jewelry
Study Notes
Casting Process
- Involves melting a material, heating it to proper temperature, and pouring it into a mold to solidify in a desired shape
- Molten metal flows by gravity or other force into a mold, solidifying in the shape of the mold cavity
- One of the oldest shaping processes, dating back 6000 years
- Variety of casting processes use different pouring methods: gravity, vacuum, low pressure, or high pressure
Capabilities and Advantages of Casting
- Can create complex part geometries
- Can create both external and internal shapes
- Some casting processes are net shape; others are near net shape
- Can produce very large parts
- Some casting methods are suited to mass production
Disadvantages of Casting
- Different disadvantages for different casting processes
- Limitations on mechanical properties
- Poor dimensional accuracy and surface finish for some processes
Test your knowledge of casting processes with this quiz. Explore the basics of melting materials, pouring into molds, and solidification. Discover the key concepts and terminology related to casting.
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