Podcast
Questions and Answers
What is the main difference between expendable mould casting and permanent mould casting?
What is the main difference between expendable mould casting and permanent mould casting?
- Expendable moulds are only used for small castings, while permanent moulds are used for large castings
- Expendable moulds require more complex patterns, while permanent moulds use simple patterns
- Expendable moulds are made of sand, while permanent moulds are made of metal
- Expendable moulds are destroyed to remove the casting, while permanent moulds are reused for multiple castings (correct)
What is the purpose of cores in sand casting?
What is the purpose of cores in sand casting?
- To produce internal surfaces in castings (correct)
- To support the chaplets for stable positioning
- To provide enough metal for subsequent machining operations
- To help in the cooling and solidification of the casting
What is the typical composition of foundry sand used in sand casting?
What is the typical composition of foundry sand used in sand casting?
- 95% silica, 2% water, 3% clay
- 80% silica, 10% water, 10% clay
- 85% silica, 5% water, 10% clay
- 90% silica, 3% water, 7% clay (correct)
What is a major requirement for patterns used in sand casting?
What is a major requirement for patterns used in sand casting?
What is the main purpose of chaplets in the context of cores in sand casting?
What is the main purpose of chaplets in the context of cores in sand casting?
Which type of casting requires a new mould for each new casting?
Which type of casting requires a new mould for each new casting?
Which casting process involves the use of a pattern made of wax?
Which casting process involves the use of a pattern made of wax?
What is a disadvantage of investment casting?
What is a disadvantage of investment casting?
Which casting process is suitable for mass production of non-ferrous alloys and cast iron?
Which casting process is suitable for mass production of non-ferrous alloys and cast iron?
In which type of die casting is the injection system submerged in the molten metal?
In which type of die casting is the injection system submerged in the molten metal?
Which casting process offers the advantage of good dimensional accuracy and finer grain structure?
Which casting process offers the advantage of good dimensional accuracy and finer grain structure?
What is a key advantage of hot-chamber die-casting?
What is a key advantage of hot-chamber die-casting?
Which type of castings are produced in permanent mold casting?
Which type of castings are produced in permanent mold casting?
What is the primary role of grain size and shape in casting?
What is the primary role of grain size and shape in casting?
What is an advantage of investment casting over sand casting?
What is an advantage of investment casting over sand casting?
What does hot-chamber die-casting involve?
What does hot-chamber die-casting involve?
What is the function of chaplets in the context of cores in sand casting?
What is the function of chaplets in the context of cores in sand casting?
What is a major limitation of sand casting in terms of pattern and mould cavity size?
What is a major limitation of sand casting in terms of pattern and mould cavity size?
What is the primary purpose of investment casting?
What is the primary purpose of investment casting?
What is the typical composition of foundry sand used in sand casting?
What is the typical composition of foundry sand used in sand casting?
In which type of die casting is the injection system submerged in the molten metal?
In which type of die casting is the injection system submerged in the molten metal?
What is a key advantage of centrifugal casting over other casting methods?
What is a key advantage of centrifugal casting over other casting methods?
In investment casting, what is the main purpose of preheating the mold to a high temperature?
In investment casting, what is the main purpose of preheating the mold to a high temperature?
What is a key advantage of permanent mold casting over sand casting?
What is a key advantage of permanent mold casting over sand casting?
What is a disadvantage of hot-chamber die-casting?
What is a disadvantage of hot-chamber die-casting?
What is an advantage of cold-chamber die casting over hot-chamber die-casting?
What is an advantage of cold-chamber die casting over hot-chamber die-casting?
What is the primary area of application for investment casting?
What is the primary area of application for investment casting?
Which feature defines the surface quality of casting and the major mold parameters such as strength and permeability?
Which feature defines the surface quality of casting and the major mold parameters such as strength and permeability?
What is a common disadvantage of investment casting?
What is a common disadvantage of investment casting?
What is a common advantage of investment casting over sand casting?
What is a common advantage of investment casting over sand casting?
