Die Casting By Jonathan Gordon and Lee. Gravity Die Casting.

Die CastingDie Casting

By Jonathan Gordon By Jonathan Gordon and Leeand Lee

Gravity Die Gravity Die CastingCasting

Gravity die casting Gravity die casting processprocess

Mazak, an alloy of Zinc and aluminium, is Mazak, an alloy of Zinc and aluminium, is first melted in a crucible furnace.first melted in a crucible furnace.

Molten metal is then poured by ladle in to Molten metal is then poured by ladle in to an open steel mould where it is allowed to an open steel mould where it is allowed to cool and solidify.cool and solidify.

Gravity die casting processGravity die casting process

The mould is then turned upside down and The mould is then turned upside down and tapped with a hammer to release the tapped with a hammer to release the finished casting.finished casting.

Gravity die casting requires minimal finishing Gravity die casting requires minimal finishing and waste as minimal because excess metal and waste as minimal because excess metal can be melted down and used again.can be melted down and used again.

Things that you may Things that you may recogniserecognise

Things that are made from gravity Things that are made from gravity die casting are:die casting are:

Toaster - Toaster -

Lawnmowers - Lawnmowers -

Car wheel rims - Car wheel rims -

Identifying the process Identifying the process

When something has been created When something has been created by gravity pressure die casting there by gravity pressure die casting there would be:would be:

Section hair lines Section hair lines ejector pin marksejector pin markssprue and runner markssprue and runner marks

Materials Materials

The materials used in gravity die The materials used in gravity die casting is a mixture of Zinc and casting is a mixture of Zinc and aluminium. aluminium.

Zinc - Zinc -

Aluminium - Aluminium -

High pressure High pressure die castingdie casting

High Pressure Die CastingHigh Pressure Die Casting

Forcing metal under high pressure to Forcing metal under high pressure to form a mould.form a mould.

These moulds are called dies and are These moulds are called dies and are made from steel. made from steel.

This produces non-ferrous metals.This produces non-ferrous metals.

Materials usedMaterials used Metals that are commonly used are

also: Aluminium -

Zinc -

What is made from the What is made from the processprocess

In this process you can make:In this process you can make:

Golf club heads -Golf club heads -

Car engine blocks - Car engine blocks -

Radiators -Radiators -

High pressure die casting High pressure die casting processprocess

  First the mould is sprayed with First the mould is sprayed with lubricant and closed. lubricant and closed.

Molten metal is then injected into Molten metal is then injected into the mould under high pressure. the mould under high pressure.

High pressure die casting High pressure die casting processprocess

Once the cavity is filled, the pressure Once the cavity is filled, the pressure is kept at a steady level until the is kept at a steady level until the casting has become solid.casting has become solid.

Finally, the die is opened and the Finally, the die is opened and the casting casting

is injected.is injected.

Identifying the processIdentifying the process

When something has been created When something has been created dy high pressure die casting there dy high pressure die casting there would also be:would also be:

Section hair lines Section hair lines ejector pin marksejector pin markssprue and runner marks sprue and runner marks