Joining (Materials option)
Bayani Gaba-gaba
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.
Manufura
- select and use appropriate methods of permanently or temporarily joining materials, for example: - joints - pre-manufactured components and fasteners - adhesives - heat processes.
Darasin Sauti
Saurari wannan darasi a cikin manhaja
Taswirar tunani
An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.
Bude taswirar tunani a cikin manhaja
Katunan tunawa
Gwaji mai sauri kan abin da ake jarraba a wannan batu.
Yi atisayen wadannan katuna a cikin manhaja
Takardar Darasi
Cikakken Bayanin Darasi Yana Kan Manhajar Green Bridge
Sami manhajar Green Bridge CBT a wayarka ko kwamfutarka domin cikakken laburaren IGCSE: takardun jarrabawar baya, tsarin kimantawa, taswirar tunani, katunan karatu da darussan sauti.
Nazarin Darasi
Barka da kammala darasi akan Joining (Materials option). 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.
- 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
Yi aikin wadannan tambayoyi a cikin manhaja
Yi aikin wadannan tambayoyi a cikin manhaja
Littattafan da ake ba da shawarar karantawa
Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan Joining (Materials option)? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
Sauke Manhajar Daga Google Playstore
Duk abin da kake buƙata don yin fice a JAMB, WAEC & NECO.
