Metal Forming Processes (Junior Cert Engineering): Quizzes

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Cold Forming Processes
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What is the defining characteristic of cold forming processes?

Shaping metals at room temperature

Which material is NOT mentioned as commonly used in sheet metalwork?

Titanium

What type of pencil should be used for marking sheet metal?

Soft pencil (2H)

Which type of snips is used for straight cuts and outside curves?

Straight snips

Why should snips never be used to cut wire?

It damages the blades

What is the maximum thickness of mild steel plate that bench shears can cut?

3mm3\text{mm}

What is the primary purpose of mallets in sheet metalwork?

Bending without damaging surface

What is the maximum metal thickness that sheet metal punches can handle?

1.5mm1.5\text{mm}

How much material should be allowed for creating beaded edges?

3-6mm3\text{-}6\text{mm}

How much material is needed for wired edges?

2122\frac{1}{2} times wire diameter

Which metals are most commonly used in school workshop beaten metalwork?

Copper, aluminium, and brass

What is the correct ratio for pickling solution in beaten metalwork?

1 part acid to ~10 parts water

What spacing should be used for concentric circles when hollowing?

About 12mm12\text{mm} apart

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