Manufacturing And Materials Term 1 Flashcards
Give three examples of softwoods
Pine, spuce and redwood
Give three examples of hardwood
Ash, beech and oak
Give the 3 characteristics of softwood comapred to hardwood
They are softer and easier to work with, grow faster and used as building material
Give 3 characteristics of hardwood
Very expensive, lose their leaves in the winter and are hard
What is another name for softwood and hardwood?
Softwood-coniferous
Hardwood-deciduous
How can you tell if something is made out of MDF?
There is no grain, and it is very clean
What are manufactured boards
Boards that are covered with a thin layer of real wood called veneer
What are the characteristics of manufactured boards
Often made from waste wood and so are inexpensive
Name 2 examples of manufacted boards
MDF, chipboard and plywood
What is conversion in timber
After being cut (felled), tree trunks are stripped of their bark and cut into usable planks, into timber
What is seasoning in timber
Newly cut timber has lots of moisture and so can rot and split, so moisture is removed by things like air seasoning
What is the fsc
The forest stewardship Council it’s an organisation that helps protect the sustainability of forests
Where do metals come from
The ground in ores, metals embedded in stone
What is ferrous
When a metal has iron and so is magnetic
What is non ferrous
When a metal has no iron and isn’t magnetic
How can you remove the stone from an ore
By using a furnace or electrolysis
What are alloys
A mixture of two or more metals to make a new metal with improved characteristics
Give 3 examples of ferrous metals
Cast iron,low carbon and high carbon steel
Give three examples of non ferrous metals
Zinc, copper, aluminium
What are polymers
Plastic can be produced in any colour, shape, are cheap and can be found in crude oil
What are thermoforming polymers?
Plastics that can be reheated and shaped in various ways, they can be recycled, but often weaken
What are thermosetting polymers?
Plastic that one I set cannot be reheated to shape and mould
What are polymer additives and what do they do?
Things that can be added to polymers to enhance them
Give two examples of polymer additives
Pigments, for colour and plasticisers that help them be soft and flexible
What are stock forms and give two examples
Stock forms are the shapes and sizes which polymers are available. They can be made in powder, tubes and sheets
What are smart materials?
Materials that react to stimulus like boiling water and this changes their characteristics and or properties
Give three examples of stimuli that can affect smart materials
Stress, temperature and UV light
What is a piezoelectric smart material?
Is more material that changes due to stress and pressure and can be used for seat belts and alarms
What are phosphorescent smart materials
A smart material, where light changes its properties e.g glow in the dark and watches
What are the chronic smart materials?
When temperature affect the small material it changes colour at specific temperatures e.g thermometers
What are photochromic smart materials
When UV light stimulates particles in a pigment and so colour changes depending on the lighting e.g sunglasses
What is shape memory alloy?
Always remember the shape when they were heated, and if the shape changes it returns to its original state e.g glasses frames and braces
What is quality assurance?
Procedure to manage all the functions that affect the quality of manufacturing (production)
What is quality control?
Thing that checks against the manufacturing, it focuses on individual products/final products
What is the logo for the quality control?
The Lion mark, a British consumer symbol
What is the logo for quality assurance?
A heart with an S inside, identifying safe products
What is a jig used for?
Tool that helps, you do something accurately
What is a mould used for
Something that you pour into that sets and makes the final product
What is a the former?
Something to form over something else
What is tolerance?
Unacceptable range of differences to the standard
Timber manufacturing, turning
Pieces of timber rotated and cutting tools are used to shape the material. This can be used for metal and timber.
Timber manufacturing, laminating
A thin strip of wood is glued in a former, and this is often used to create curb shapes in furniture
Timber manufacturing, steam bending
Timber can be bent if steamed it softens timber allowing them to be formed easily
REMEMBER TO DRAW EACH PROCESS FOR PLASTIC MANUFACTURING REVSION
OR ELSE 🤬🤬🤬🤬🤬
Explain vacuum forming
An electric heater warms a plastic sheet, making it flexible and is vacuumed, pushing the plastic down onto the mould
Explain blow moulding
A tube of soften plastic is fed into a mould. It is filled with inflates into the mould shape and then clamps close it. This is used for bottles.
What is kerfing
Making a cut to a material to make it flexible. This let you make a curved shape
Explain injection moulding
Granules are fed into a hopper and goes for a feed screw. Eventually these granules are heated and turning into a liquid that goes into a mould
Explain line bending
Putting a sheet of plastic onto way heated wire this bends a sheet of plastic and softens the acrylic
Explain extrusion
Granules are fed into a feed group and these are heated. Then they pass out of the screw and cool in a water tank and then are pulled by pull rollers
What is mass production?
Where as many products as possible are made
What is continuous production?
Where a factory keeps on making products, without stopping
What is just in time production?
When a factory makes the exact amount that a customer needs when your customer needs it
Give an example of something that is formed by extrusion
A pipe
How do you know if something was probably made by injection moulding
If there’s detail on something or something is pushed into a mould
Given example of something that is made by line, bending
A bent plastic sheet
Give me an example of something that is made by vacuum moulding
Lunchboxes and plastic boxes
What is stock form?
The form which you bolus in like powder or granules
What are the characteristics of the hardwood oak?
Physically, it’s brown and has attractive grainIt is tough durable and used for furniture
What are the characteristics of the softwood pine?
Pale lightweight easy to form and used for construction
