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Questions and Answers
Which of the following factors influence the quality of a casting?
What are the particular design considerations for sand casting?
What are the particular design considerations for die casting?
Which of the following is a concern for sand casting but not for die casting?
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What is a condition for successful casting practice?
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Which of the following is NOT a benefit of the product development approach shown in the figure?
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What percentage of the final product can assembly represent?
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What is an important consideration for assembly in manufacturing?
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What is the concept of cradle-to-cradle production?
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What are three main points of cradle-to-cradle production?
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Study Notes
Casting Quality Factors
- Material properties, casting process, and design parameters influence the quality of a casting.
Design Considerations for Sand Casting
- Avoid sharp corners and intricate details due to the coarse grain size of sand.
- Design for easy removal of pattern and sand from the mold.
Design Considerations for Die Casting
- Design for thin walls and uniform sections to minimize shrinkage and porosity.
- Consider the high pressure and heat generated during the process.
Concerns for Sand Casting vs. Die Casting
- Sand casting is concerned with mold material strength, whereas die casting is not.
Successful Casting Practice
- Control of process variables, such as temperature, pressure, and time, is a condition for successful casting practice.
Benefits of Product Development Approach
- The approach does not provide a benefit of reduced cycle time.
Assembly in Manufacturing
- Assembly can represent up to 50% of the final product's cost.
- An important consideration for assembly is the ease of assembly and disassembly.
Cradle-to-Cradle Production
- Cradle-to-cradle production is a design approach that considers the entire product lifecycle, from creation to reuse or recycling.
- Three main points of cradle-to-cradle production are:
- Use of technical and biological nutrients
- Design for disassembly and recyclability
- Closing material loops through recycling and reuse
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Description
Test your knowledge on the conditions and factors that contribute to successful casting practice. Explore the various variables that need to be controlled and the factors that influence the quality of a casting.
