Although people have been galvanizing iron since the 17th century, the earliest use of the term was in the 19th century as it was named after the Italian scientist Luigi Galvani. This process is primarily used these days to mean coating something with zinc and the phrase is often used metaphorically to reinforce something. When you galvanize steel, for instance, you are reinforcing the steel with zinc iron alloys to protect against rust for longer.
How Is It Done?
There are three main ways to galvanize steel, hot-dip, dry and electro galvanizing. For a hot dip coating you will first need to heat the zinc iron alloy in a specialty furnace designed to withstand the heat. You can find various sizes from a galvanizing furnace manufacturer to help in this process. With dry, or thermal diffusion, methods you are tumbling the parts and zinc powder together at a temperature of around three hundred degrees Celsius. Electro galvanizing steel involves using an electrical current in an acid bath to dissolve zinc iron alloys and coat the steel.
Why Do It?
Galvanizing steel can help protect against rust for longer. This is useful in structures and items which will have contact with harsh conditions and is routinely found in automobile parts as well as outdoor furniture. This process takes the rust resistance of zinc iron alloys and the strength of steel and combines them for a strong and durable product.
People have been galvanizing things like armor and furniture for centuries to combine the rust resistance of zinc with the strength of steel and other metals. You can use many different materials for galvanization, but it usually refers to a zinc iron coating on steel. There are a couple of different ways to accomplish this coating and some can be done by both home hobbyists and industrial manufacturers.