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Creep feed grinding
Science, Maths & Technology

Creep feed grinding

...article ] (b) Nip maintained by using a dummy workpiece. [Images to demonstrate 'Creep feed grinding' - see article ] (c) The shoe method of coolant application. [Images to demonstrate 'Creep feed grinding' - see article ] Heat flux at burn in simulated grinding tests with shoe and jet methods of coolant application. Wheel: WA 60/80 F P2 V; Wheel speed: 20 m s -1;...
Melt casting
Science, Maths & Technology

Melt casting

...article)] 2. Extruder starts and polymer flows into mould. 3. Extruder stops when polymer appears from vent. Polymer solidifies in sprue. [Diagram to demonstrate Melt Casting (see article)] 4. Extruder removed from mould and polymer solidifies in mould cavity. [Diagram to demonstrate Melt Casting (see article)] 5. Mould opened and component removed. [Diagram to...
Article 5 mins
Full mould casting (evaporative pattern)
Science, Maths & Technology

Full mould casting (evaporative pattern)

...article] 2. Cool die, open, eject pattern and store for 30 days. [Diagram to demonstrate Full mould casting (Evaporative pattern) - see article] 3. Glue-on runners, feeders and risers (where necessary) if not already an integral part of the pattern. Coat pattern with a special factory coating and dry. [Diagram to demonstrate Full mould casting (Evaporative pattern) - see...
Centrifugal casting
Science, Maths & Technology

Centrifugal casting

...article)] Metal moulding casting: Horizontal method used for the production of long pipes. [Images to demonstrate Centrifugal casting (see article)] Vertical centrifugal casting: Core used for central holes. [Images to demonstrate Centrifugal casting (see article)] Manufacture: Centrifugal casting is used to manufacture hollow cylindrical products. When the length of the...
Water jet cutting (Hydrodynamic cutting)
Science, Maths & Technology

Water jet cutting (Hydrodynamic cutting)

...article ] Cuts material by the impingement of a high velocity water jet against the workpiece. Relatively small volumes of water are used at high pressures, which are produced by a pump and intensifier with an accumulator tank to smooth out the pressure pulses. [Images to demonstrate 'Water jet cutting (Hydrodynamic cutting)' - see article ] Manufacture: An alternative to...
Abrasive jet cutting
Science, Maths & Technology

Abrasive jet cutting

...article ] Cuts materials by means of a high pressure fluid jet (usually water, although other fluids or air alone can be used) containing abrasive particles. The abrasive material can be introduced dry or (more usually) in the form of a slurry, striking the workpiece at a velocity approaching that of sound, chipping away small particles. An abrasive jet cutting system...
Ultrasonic machining (USM)
Science, Maths & Technology

Ultrasonic machining (USM)

...article ] A metal tool is given a high frequency, low amplitude oscillation perpendicular to the workpiece, which transmits a high velocity to fine abrasive particles present between the tool and workpiece. These particles strike the workpiece, chipping away small particles, and the tool is gradually fed into the workpiece. The “chips” are carried away from the...
Osprey process
Science, Maths & Technology

Osprey process

...article)] Material is induction-melted in a protective atmosphere of argon. It is poured into a tundish/crucible. A stream of molten metal at the base of the tundish is atomised by a mixture of argon and nitrogen gas into a stream of particulate material. This is deposited on a mandrel former or into a shaped mould. The preform is subsequently hot worked to final shape....