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ACCURACY
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Control to drawing
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Using a process of chemically bonded sand hardening over a period of time by the reaction between a resin and hardener
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| ALACROME |
Protective surface treatment usually as a precursor to painting |
| ANODISE |
Surface treatment to protect against corrosion |
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ANTI-VIBRATION
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Control devices
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BRAKES
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Railway braking devices
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BRASS
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Alloy of copper and zinc
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BRONZE
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Alloy of predominately copper, zinc, tin and lead
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CAST
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To fill a mould with molten metal
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CAST IRON
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Iron that has been melted and poured to shape
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CENTRIFUGAL
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Pumps etc.
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A certificate stating the chemical analysis of the metal in the casting
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CERTIFICATE OF CONFORMITY
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A certificate stating that the material in the casting conforms to the specification of the drawing
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A sample of the same metal, in the shape of a coin, which is used to produce the casting which is tested in a laboratory to determine the physical properties of the material
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CONTRACTION
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Loss in dimensions when cooling from the liquid to solid, and then to room temperature
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CORE
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Sand shapes to assemble into a mould to create internal shapes and some external shapes
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COREBOX
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Tooling required to form internal & some external shapes
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COREMAKER
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Operator producing cores
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Chemical hardening process where the silica sand is mixed with sodium silicate until all the grains are coated. The mould or core is then made with this and carbon dioxide is then passed through the sand which sets the sodium silicate, thus hardening the mould or core
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CRAFT
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Higher skills of an artisan
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DE-CORE
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Removing the sand forming the internal shape for the casting
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DE-GAS
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Remove gas bubbles taken into the solution by the molten metal
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DRAUGHTSMAN
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Person creating a Technical drawing
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| DRAWING |
Detailed two dimensional views of a component |
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DROSS
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Impurities in non-ferrous metals
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A process of self hardening sand using chemicals of the ester family of very low toxicity
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EXAMINE
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Inspect
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FEEDER
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Device providing extra molten metal to the cavity as it solidifies
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FERROUS
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Alloy of iron
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FETTLE
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Removing all runners & feeders from the casting & de-burring
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FINISH
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Surface, texture or coating
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FIRST
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Initial article produced
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FIXED CRUCIBLE TILTING FURNACES
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A furnace which has a fixed crucible and is emptied by tilting its axis and decanting the molten metal into a ladle for pouring
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FURNACE
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Vessel for melting and treating metals & alloys
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FURNACEMAN
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Operator who melts & treats metal in a furnace
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A process using natural quarried sand which does not contain hardening chemicals but relies on its nautral green strength when compacted into the mould
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GRIND
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Removing excess by means of an abrasive stone or wheel disc
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GUNMETAL
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Member of the bronze family
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HEAT
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Term given to an individual melt of metal
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| HEATTREAT |
Process of stress relief, hardening and development of tensile strength carried out in an oven or furnace |
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INSPECT
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Examine
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KNOCKOUT
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Breaking up the mould & removing the casting
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| LACQUER |
Protective coating against corrosion |
LIFT OUT CRUCIBLE FURNACES
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A furnace which has a free standing crucible within it which, when the metal has melted, is lifted out and into a carrying shank for pouring
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LINISH
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Removing excess with an abrasive belt
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LOW GAS EVOLUTION SELF SETTING PROCESS
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A process using chemicals specially designed to produce very low levels of gas evolution when surrounded by molten metal
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| MACHINE |
To achieve dimensions by accurately removing metal in a lathe or similar |
| MALLEABLE |
Ductile |
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MARITIME
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Seafaring
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MELT
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Reduce solid metal to the molten state in a furnace
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MEMORIAL
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Plaques
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METRO
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Railway & Tram Systems
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MODIFY
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Refine the grain structure of molten metal in the furnace
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MOULD
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The form into which molten metal is poured to produce a casting
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MOULDER
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Operator producing moulds
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NAVAL
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Warships
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| NODULAR |
| Graphite in spheres or modular shape |
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NON FERROUS
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Does not contain iron
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OXIDE
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Skin formed on non-ferrous metals when molten
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Wet paint or powder coating given to the casting surface
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Tooling required to make a mould
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A metalic coating given to the casting surface
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PNEUMATIC
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Activated by compressed air
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POUR
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To cast a mould
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POWER
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Electricity
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| PRESSURETIGHT |
Will not leak under pressure |
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ROTARY
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Valves etc.
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RUNNER
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Device in the mould to convey molten metal to the mould cavity
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SAMPLE
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Example of first production
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SANDBLAST
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Cleaning a casting by impaction of sand on the surface
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| SHOT |
Fine metal bearings |
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SHOTBLAST
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Cleaning a casting by impaction of steel shot on the surface
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SIGNALS
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Railway signal devices
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SLAG
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Impurities in ferrous metals
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SOLIDIFICATION
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Transformation from the liquid state to the solid state
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SPECIFICATION
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Material & size
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| SPHEROIDAL |
Graphite in spheres or modular shape |
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STANDARD
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Specification
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The texture or appearance of the casting skin or the coating which is given to it such as paint or plating
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SWITCHGEAR
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Electrical control equipment
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A sample of the same metal which is used to produce the casting which is tested in a laboratory to determine the physical properties of the material
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TOLERANCE
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The range permissible on a given dimension e.g. + or - .006
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TOOLING
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Required to successfully make an item
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TREATMENT
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Secondary & tertial processes to a casting
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UNDERGROUND
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London Tube
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VACUUM
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Pumps etc.
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