How do hot dip galvanization and electro-galvanization differ?
Galvanizing steel protects it from corrosion by coating the steel with zinc. The piece of metal being galvanized is called the substrate. There are two galvanizing methods: • Hot-dip requires immersing steel in a vat of molten zinc. Hot-dip provides good resistance to corrosion, but tends to crack if the steel is bent. Hot-dipped steel is usually used where appearance and flexibility aren’t important. • Electro-galvanizing produces a thinner, more attractive, flexible coating. In electro-galvanization, the steel is passed through an electrically charged plating solution, and the zinc is deposited more thinly and evenly.
