General - AM.I.G.K7 - Corrosion removal and treatment procedures

Question 1

What must be done to a piece of aluminium alloy to remove surface corrosion and to treat the metal to prevent further corrosion?

Answer 1

• Remove the corrosion residue with a bristle brush or a nylon scrubber - Neutralise the surface with chromic acid or with some type of conversion coating
• Protect the surface from further corrosion with a coat of paint

Question 2

How may rust be removed from a highly stressed metal part? (3)

Answer 2

• glass bead blasting
• mild abrasive paper
• fine buffing compound on a cloth buffing wheel

Question 3

What tools are proper for removing corrosion from aluminium alloy?

Answer 3

• Aluminium wool or aluminium wire brushes
• Severe corrosion can be removed with a rotary file

Question 4

What type of device is used to remove surface corrosion from a piece of magnesium alloy?

Answer 4

A stiff hog-bristle brush

Question 5

What must be done to a piece of aluminium alloy to remove surface corrosion and to treat the metal to prevent further corrosion?

Answer 5

• Remove the corrosion with a bristle brush/nylon scrubber
• Conversion coating
• Paint