Skills and Understanding
Skills and Processes
Skills |
Processes |
Drawing |
Marking out
|
Proportion |
Cutting -hand |
Isometric |
Hardening |
Exploded view |
Tempering |
Cutting List |
Forging |
Working Procedure |
Turning |
Measuring+/- |
Drilling |
Marking out |
Moulding |
Joining: (Brazing) (Screw) (Encapsulate/pin) |
Holding |
Shaping |
Threading |
Drilling |
Assembling |
Sawing-hand |
(Investigation) |
Filing |
(Researching) |
Thread tapping |
(Designing) |
Moulding |
(Planning) |
Cleaning up; Prep for finish; Finishing |
(Testing); (Evaluating) |
Concept
- Safety
- Time management
- Ergonomics
- Accuracy
- Measurement
- Material -properties
Vocabulary and Dictionary
Aesthetics
A set of principles of good taste and appreciation of beauty
Annealing
The softening of metal to improve machinability and to relieve internal stress caused by rolling, drawing etc. It is also used to define the grain structure of metal
Anvil
Formed from mild steel with hardened steel face welded on the top. The edges of the face may be progressively curved.
Anvil Stand
A cast iron support for the anvil. Presents the anvil at a comfortable and safe working height
Austenite
Originally, a solid solution of carbon in iron
Beak
Used for drawing down. Bending metal to a radius. Fullering and forming rings.
Chemical
A substance obtained or used in chemistry
Critical Range
The range of temperature in which the reversible change from austenite occurs
Degrees Celsius
Temperature scale showing the references of freezing and boiling points of water
Ergonomics
The study of work in relation to the environment in which it is performed and the personnel who perform it.
Hardening
The process of making steel hard by cooling from above a critical range of temperatures at a rate that results in the formation of martensite. May involve cooling in water, oil or air, according to the size and composition of the article.
Hardie Hole
A square hole to receive the square shanks of bottom tools - bottom swage, bottom sets etc.
Isometric
A drawing of equal measure with the plane of projection at equal angles to the three principle axes of the object shown. Lines within an axis are parallel to each other.
Martensite
A constituent formed in steel when it is cooled at a rate sufficiently rapid to suppress the change from austenite to pearlite.
Mechanism
The structure or adaption of parts of a machine - a system of mutually adapted parts working together in or as in a machine.
Oxidation
The addition of oxygen to a compound
Physical
Of matter; material (both mental and physical force.) Physical chemistry. the study of the dependence of physical properties on chemical composition, and of the physical changes accompanying chemical reaction
Punched Hole
A round hole used to provide clearance when punching hot metals.
Residual Heat
The amount of heat remaining in the metal
Table
This flat, mild steel area is for resting metal on when cutting
Tempering
The re-heating of hardened steel at a temperature below the critical range in order to to decrease the hardening. Also called drawing
Timber Buffers
To prevent anvil rocking in the stand and to avoid metallic shock and vibration to the cast iron stand.
Knowledge
Materials and Components.
The physical and chemical changes which occur during forging,
hardening and tempering of metal. Temperature and oxide layers,
Classification of materials
Plastic: thermoplastics-thermosets.
Thermoplastics become plastic on being heated. Specifically
any resin which can be melted by heat and then cooled, the number
of processes being repeated any number of times without appreciable
change in properties. e.g., cellulose derivatives, vinyl resins,
polystyrenes, polyamides, acrylic resins.
Thermosets are compositions in which a chemical change reaction
takes place while they are being moulded under heat and pressure;
the appearance and chemical and physical properties are entirely
changed, and the product is resistant to further application of
heat
Wood: Hardwoods-softwoods.
Hardwoods are dense close-grained woods from deciduous trees
such as oak, beech, ash, teak.
Softwood is the name given to to timber which comes from coniferous
trees. For example, Scots pine, whitewood, poplar, and larch
Metal: Ferrous- non ferrous.
A non ferrous alloy is any alloy based mainly on metals other than iron (ferrous), i.e. usually on copper, aluminium, lead, zinc, tin, nickel or magnesium
Computer Aided Manufacture
Systems that have Input, Processes and Outputs. Examples of these via made products or if CAM available (The use of a computer to assist in the design of the artefact) then the use of CAD/CAM for the design and manufacture of the screwdriver handle.
Structure.
The effect of load on the joint between handle and blade. Simple test using a variety of methods-screw (twist), braze, "tight fit", glue, pin.
