ENGINEERING MATERIALS
1. Describe properties and uses of aluminum, copper and brass.
2. What is mild steel? What are its properties and uses?
3. What is high carbon steel? What are its properties and uses?
4. What are thermoplastics? Give examples, their properties and uses.
5. What are thermosetting plastics? Give examples, their properties and uses.
1. Fill in the gaps with the words provided:
brass, adhesives, copper, rigid, casting, iron, heated, carbon, alloying, aluminum, brasses
thermosetting, malleable, iron
1. Most early ……………………..were animal glues made from animal products such as horse teeth.
2. ………………….. one metal with other metal or non metal often enhances its properties. For instance, steel is stronger than ……………….., its primary element.
3. Polyester resins are………………..; which means that the plastic softens when initially ………………., but sets permanently ……………………once it has cooled
4. Polyester resin is used for…………………….., auto body repair, wood filling, and as an adhesive.
5. Copper is ……………………………….and ductile, a good conductor of heat and, when very pure, a good conductor of electricity.
6. ……………………… is remarkable for its ability to resist corrosion.
7. ………………………….is any alloy of copper and zinc; the proportions of zinc and copper can be varied to create a range of ………………………with varying properties. In comparison, bronze is principally an alloy of …………………………and tin.
8. …………………………..is the sixth most abundant element in the universe, formed as the final act of nucleosynthesis by burning ……………………in massive stars.
2. Translate the following words into Polish and mark whether they are nouns (N)or adjectives(A) or verbs (V):
Soft, ductile, drill, malleable , tough , file, cast, scratch- resistant, temper, wear-resistant, durable, stiff, brittle, casting, cut, heat-resistant, mould, saw, glazing,
3. Polyester resin, casts, nylon, steel sheets, flammable, escalator, punch, reciprocate, oscillate, bearings, mass, epoxy , thermoplastics, brass, copper, wiring, crankshaft, ABS, acrylic, thermosetting plastics, files, insulator
1.………………………….set hard and do not change when heated again
2.………………………….has high impact strength an toughness, light and durable, used for making car components, telephones, safety helmets
3.……………………is very corrosion resistant , casts well, can be work hardened, good conductor.
4………….. is stiff and can be polished very easily.
5. …………………resin has good wear resistance.
6. Cutting tools are: …………. and saws.
7. Urea formaldehyde is a good electrical .....................................
8. Bearings are made from……………, which is self- lubricating.
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