Flashcards
Metals and metalworking: types, marking out and riveting
Flashcards do conjunto (31)
- 1Prototypea model or a rough copy for a new product. Used to see if your idea meets success criteria
- 2Stainless steelUsed to make cutlery because does not react with water so therefore does not go rusty.
- 3Cast IronHard, heavy and brittle. Used for vices, drill stands, car engines.
- 4Tin plateMild steel with a very thin layer of tin to stop it from rusting. scratches easily, used for tin cans
- 5Ferrous metalMainly consists of iron. Has disavantage of becoming rusty. Only way to prevent it from being rusty is to put a protective layer on the surface of the metal- paint or enamel.
- 6Non-ferrous metalsDon't contain iron therefore do not go rusty. Makes them useful for jobs when they may come in contact with moisture.
- 7CopperShaped and soldered easily. USed for water pipes . Conducts heat and electricity well
- 8AluminiumEAsy to work witha nd can give a polished finish. window frames, saucepans,
- 9BrassAlloy of copper and zinc. gold in colour. similar to copper in many ways but with greater strength.
- 102 things you could use to mark on woodmarking knife across grains but pencil to draw curves.
- 113 things you can use to mark out on acrylic.Pencil if it still has the protective paper on. When it is removed, a SPIRIT PEN or CHINAGRAPH can be used to mark directly on the acrylic.
- 12Tool to use on mild steel.Scriber
- 13tool used on aluminum.Pencil because it is so soft.
- 14Try squareTo mark out angles accurately at 90 degrees at a straight edge.
- 15To mark paraller lines.Marking gauge is used to make parallel lines on wood. on metal, ODD-LEG CALLIPERS
- 16Before drilling metal, you must make...a small dent to keep the drill from slipping. A CENTRE PUNCH can be used.
- 17To find centre of a square/rectangle.A ruler and a pencil.
- 18To find out centre of a circle.Use CENTRE SQUARE.
- 19TemplateA cut out shape you mark around.
- 20shears (tin snips)Usd to cut thin sheet of metal.
- 212 ways of bending sheet metalFolding and bending
- 22Preventing a piece of metal from being scratched when in the vice.Piece of paper
- 232 equipments used to heat metal in order to bend it.gas torch and forge
- 24JigBend metal around. You can do the same bend many times.
- 253 types of rivetingCountersunk, pop and snap head
- 26why is riveting a good way of joining two sheets of metal together.it is a permanent fixing method
- 272 resons for countersunk rivetingvery strong and very neat
- 28Snap head rivetingStronger than countersunk but heads are left above the work surface
- 29Set and snap toolTO support the rivet head
- 30advantages of pop rivetinquick, easy and can be dobe from one side of the work only.
- 31disadvantages of pop rivetingnot as strong as normal riveting and leaves bit sticking on the work surface
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