Finishing
Akopọ
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.
Awọn Afojusun
- show knowledge of a range of finishes for the classes of materials listed in section 1.5.
Akọ̀wé Ẹ̀kọ́
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Finishing. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- 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
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Finishing? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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