Explain the working principle of galvanizing process. Give its applications also.

Explain the working principle of galvanizing process. Give its applications also. 
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1 Answer

Answer :

Galvanization or galvanisation or galvanizing is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The most common method is hot-dip galvanizing, in which parts are submerged in a bath of molten zinc.

Galvanizing protects in three ways:

1. It forms a coating of zinc which, when intact, prevents corrosive substances from reaching the underlying steel or iron

2. The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc.

3. The zinc protects its base metal by corroding before iron. For better results, application of chromates over zinc is also seen as an industrial trend. 

Applications:

Galvanizing: It is used for -

1. all forms of outdoor structural parts

2. Pipes

3. Sheeting for roofs

4.wash tubs

5. All sort of containers

6. telegraph wire

7. fencing materials

8.Transformer parts
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