Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process ?
Correct answer: C. Sherardizing
- A. Galvanising
- B. Tinning
- C. Sherardizing
- D. None of these
Explanation
Galvanising and tinning are hot-dipping processes for applying molten zinc and tin, respectively. Sherardizing coats iron or steel by zinc vapour diffusion in a heated rotating container, so it is not hot dipping.
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