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types of metal processing - Coggle Diagram
types of metal processing
sand casting
The first step is to create the mould for the casting. A sand mould is made by packing sand into each half of the mould. The sand is packed around the pattern, which is a replica of the casting's external shape. When the design is removed, the cavity that will form the casting remains. The mould's top and bottom halves are known as the "cope" and "drag", respectively.
Once the mould has been made, it must be prepared for the molten metal to be poured. The mould cavity's surface is first lubricated to help with the removal of the casting (the type of lubricant will depend on the type of sand and metal used), then the mould halves are closed and securely clamped together. The mould halves must remain securely closed to prevent the loss of any material. In this photo, "jackets" are used to secure the two halves together.
Molten metal is poured into the mould through a gating system, or gap leading from the casting cavity to the outside of the mould. You can see weights and “jackets” on these moulds to secure the two halves together. Molten aluminium is being poured into this mould.
After the solidification time has passed, the sand mould can simply be broken and the casting removed. This step is typically performed by a vibrating machine that shakes the sand and casting out of the flask. The sand is reconditioned for reuse. Once removed, the casting will likely have some sand and oxide layers stuck to the surface. Shot blasting is sometimes used to remove the remaining sand.
aluminium wheels
aluminium wheels are one-piece wheels formed from a single block of metal by hot forging, hot or cold spinning and machining operations. The forging process permits flexibility in the design of the styled disk, similar to cast wheels. The standard alloys used are the heat- treatable wrought alloys.
typical cast iron products
Cast Iron Griddle
Cast Iron Melting Pot!
Cast iron scrapers
Cast Iron Skillet Handle Cover
cast iron vs cast steel
cast iron
Cast Iron is very easy to cast due to its very good flowability and low shrinkage
Cast iron is better in terms of corrosion resistance and resistance to mechanical wear
Cast iron have very good vibration damping properties
Cast iron have very good vibration damping properties
cast steel
Cast Steel has less flowability and more shrinkage as compared to Cast Iron
Cast steel is better in terms of impact loads.
Cast Steel is costlier as compared to cast iron