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WorksheetsContinuous Casting and Safety Practices
Total questions: 20
Worksheet time: 10mins
Continuous casting is primarily used to produce:
Complex shaped castings
Small precision parts
Long metal sections
Ceramic products
Which of the following is a major advantage of continuous casting over traditional casting methods?
More porosity
Lower production rate
Less wastage
Higher machining time
In continuous casting, the molten metal is poured:
Into a sand mold
Into a permanent mold
Into a rotating drum
Continuously into a water-cooled mold
One of the critical components in continuous casting equipment is:
Furnace lining
Ladle crane
Oscillating mold
Blow torch
Continuous casting is mostly used in industries producing:
Jewelry
Steel and aluminum products
Engine blocks
Hand tools
A cold shut defect in casting is caused by:
Excessive mold temperature
Poor fusion of two metal fronts
High pouring rate
Use of core prints
Which of the following is a remedy for shrinkage cavities?
Increase gating size
Use chills or risers
Reduce mold hardness
Increase pouring temperature
Blowholes in castings are formed due to:
Low melting temperature
Excess gas entrapment
Slow cooling rate
Inadequate finishing
Inclusion defects in castings are mainly due to:
Slow pouring
Presence of foreign material
Poor core design
High humidity in molding sand
Hot tears in castings usually occur because of:
Overheating of mold
Sudden cooling
Restrained contraction during solidification
Low metal fluidity
Cleaning of casting involves removing:
Furnace slag only
Excess paint
Sand, scale, and fins
Electrolytic impurities
Shot blasting is used for:
Pouring molten metal
Improving surface finish
Increasing casting temperature
Sand compaction
Fettling in casting refers to:
Heat treatment of casting
Welding cast parts
Removing unwanted projections and cleaning
Inspecting cast parts
Which process is NOT typically used in cleaning of castings?
Grinding
Painting
Shot peening
Chipping
Cleaning of casting is important to:
Decrease metal strength
Improve surface finish and dimensional accuracy
Increase the weight of the casting
Add impurities
The primary reason for wearing PPE in a foundry is to:
Increase productivity
Avoid overwork
Protect against heat, molten metal, and dust
Meet dress code regulations
In foundry work, fire-resistant clothing is essential because:
It absorbs moisture
It reflects radiation
It resists high temperatures and molten metal splashes
It's easier to wash
The most common cause of injury in foundries is:
Sharp tools
Machinery malfunction
Molten metal splashes and heat burns
Manual material handling
Ventilation in foundries is required to:
Maintain temperature
Remove harmful gases and dust
Keep sand dry
Prevent metal corrosion
A good safety practice while pouring molten metal includes:
Standing close to the mold
Using bare hands
wearing face shields
Using water to cool spills
