Karteikarten
Metal forming
Karten in diesem Stapel (9)
- 1Metal Forming Techniques
- 2Press Forming1. Sheet metal is clamped over a die of the product that will determine the final shape of the pressing.
2. A hydraulic press pushes the die into the sheet metal. Cutting blades may be included to punch holes into the sheet and trim the excess from the edges.
3. The hydraulic die is lowered and pressed sheet component is removed.
4. The sheet may be placed into further press forming machines for additional pressing, where the shape is complex. - 3Spinning1. A former called a mandrel is put into the chuck. The sheet metal blank is held in place between the mandrel and the tail stock.
2. The roller tool is moved into the blank and rotated with the mandrel. This starts to stretch the metal over the mandrel.
3. The roller tool is moved along the mandrel as pressure is maintained against the rotating blank.
4. The roller tool is moved to the end of the mandrel, while still maintaining contact with the blank. This finishes the shape of the product.
5. The finished product is removed from the mandrel.
6. Excess material is trimmed off following the spinning process. - 4Sand CastingSand casting is used to form high melting point metals such as steel and iron.
The process uses moulds made from sand. The process is slow and labour intensive because you can only use the mould once. This process is normally used for one off or batch productions.
Products tend to expensive such as railway carriage wheels, clamps, vices, drain covers and park benches. - 5Die CastingDie casting is used to mould lower melting point metals such as aluminium.
The dies casting process uses tool steel moulds that are reusable. The moulds are complex to make and expensive so this process is used for mass production.
The process creates an excellent surface finish. Products include alloy wheels, door handles and engine components. - 6—
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- Karteikarten am Metal forming , erstellt von Alex Harris am 11/06/2019.
- Erstellt von
- Alex Harris
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