Finishing
Bayani Gaba-gaba
A finish is the last thing you do to a product and the first thing the user sees and touches. Finishing is far more than decoration: it protects the material from moisture, corrosion and wear, it improves how the surface feels and looks, and it can add colour and meaning. Choosing a finish that suits both the material and the job is a marked skill in 0445.
This note runs through the finishes used on each class of material: papers and boards, woods, metals and polymers. You will see why some materials need a finish to survive at all, why others need almost none, and how surface preparation is the step that decides whether any finish succeeds or fails.
Manufura
- show knowledge of a range of finishes for the classes of materials listed in section 1.5.
Takardar Darasi
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Nazarin Darasi
Barka da kammala darasi akan Finishing. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- What are the three main reasons for applying a finish to a product? A. Protect, improve and decorate B. Cut, shape and form C. Measure, mark and cut D. Cast, mould and weld Answer: A
- Which finish protects steel even where the coating is scratched, because the zinc corrodes first? A. Varnishing B. Galvanising C. Self-colouring D. Waxing Answer: B
- Why does a polymer product such as a toy brick often need no added finish? A. Polymers cannot be painted B. The colour is mixed into the polymer and the mould gives the surface texture C. Polymers never need protecting D. Finishes do not stick to plastics Answer: B
- Which finishing process thickens the natural oxide on aluminium and can dye it a colour? A. Galvanising B. Powder coating C. Anodising D. Varnishing Answer: C
- Why is surface preparation essential before painting metal? A. It makes the metal heavier B. It removes grease and roughens the surface so the finish can key and adhere C. It changes the metal into a polymer D. It is not actually necessary Answer: B
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
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Yi Aikin Tambayoyin Gwaji
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