Joining
Akopọ
A product is rarely made from a single piece of material. Sooner or later parts must be held together, and how they are joined decides whether the product is strong, whether it can be taken apart for repair, and how it looks. Joining is the craft of bringing materials together permanently or temporarily using the right joint, fastener, adhesive or heat process for the materials and the demands placed on them.
This note covers joining across woods, metals and polymers: framing and carcase joints in wood; the difference between permanent and temporary joints; pre-manufactured components and fasteners such as screws, bolts, rivets and knock-down fittings; adhesives matched to each material; and the heat processes of soldering, brazing and welding. It explains how to choose, because a join that is strong in one situation is wrong in another.
Awọn Afojusun
- select and use appropriate methods of permanently or temporarily joining materials, for example: - joints - pre-manufactured components and fasteners - adhesives - heat processes.
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 Joining. 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.
- Which wood joint is strongest for the corners of a chair or table frame? A. Butt joint B. Mitre joint C. Mortise and tenon joint D. Plain glued lap Answer: C
- What is the main advantage of a knock-down (KD) fitting? A. It forms the strongest possible permanent joint B. It allows a product to be flat-packed and assembled or dismantled with simple tools C. It welds the materials together D. It is only used on metals Answer: B
- Which adhesive is correct for permanently joining two pieces of acrylic? A. PVA wood glue B. Solvent cement (e.g. Tensol) C. Contact adhesive D. Hot-melt glue Answer: B
- Which fastener is best for permanently joining sheet metal when only one side is accessible? A. Nut and bolt B. Wood screw C. Pop rivet D. Dowel Answer: C
- What is the key difference between welding and brazing? A. Welding uses no heat B. In welding the parent metals melt and fuse; in brazing only the filler melts C. Brazing is always stronger than welding D. Welding can only join plastics 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 Joining? 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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