Galvanised Steel

galvanised steel 1Galvanised Steel

What is Galvanised Steel?

Galvanised Steel is the process where a zinc coating is added throughout the body of a steel product. This process is called Galvanisation and protects the steel from corrosion and rusting. Galvanised Steel has a longer life durability compared tonon-galvanised steel due to the zinc components.

When zinc and steel make contact a chemical reaction occurs, the zinc bonds onto the surface of the steel producing a protective layer to the steel.

The process was first developed in England in 1837 where a sheet of steel was dipped in a molten zinc bath. This process is now called hot dip galvanisation.

Hot dip galvanisation is where a steel sheet is dipped into a bath of hot molten. The molten zinc must be maintained at around 450 Degrees Celsius for the chemical reaction to take place. The sheet is then taken out of the molten into the natural atmosphere where zinc oxide is formed.

Other processes are also used to produced Galvanised Steel, but these are not so popular.

  • Zinc metal spray – a plasma flame gun is used to spray zinc powder onto a steel sheet.
  • Zinc electroplating – a steel sheet is dipped into zinc ion and an electric current is passed through.
  • Sherardizing – in this method the steel sheet itself is heated. Rather than dipping into hot molten the steel sheet is then placed into cool zinc powder.
  • Mechanical plating – zinc powder, glass beads and a special reducing agent are coated onto the steel sheet, this process bonds zinc onto the steels surface

Galvanised Steel is mainly used to construct or repair large steel structures. This is due to low maintenance, repair costs and durability.galvanised steel

Drop Forging

Drop forging is the process in which you heat metal and shape it using a metal die-cast to produce products. Many manufacturers use this particular process to manufacture strong and durable parts for a wide range of industries. These parts can be created from various types of metal such as aluminium, brass and various grades of steel.

There are two types of drop forging. These include open-die drop forging and closed-die drop forging.

Open-die drop forging

Open die forging is the process of reshaping a piece of metal between multiple dies that do not completely enclose the metal. After every press of the die, the metal takes a new shape. This process is usually used for large, less intricate parts.

drop forging

Closed-die drop forging

Closed-die forging is what we believe to be the most popular method of forging. This is because it allows manufacturers to produce smaller and more intricate parts. These may include but are not limited to: seat belt buckles, climbing gear and spanners.

These smaller parts are formed by heating, pressing and hammering the metal into die casts. Usually, after this process is carried out it will be completed using a sanding machine as well as specialist tools to make them smooth.

Which industries require drop forging?

Many industries require drop forging. These industries include aerospace, automotive. All of these industries require strong and durable parts to produce safe and effective methods of transport. Other industries which require drop forging include medical, oil & gas, military and agriculture.