Back to Topic 4.1 — Manufacturing techniques
4.1.9Design Technology HL4 flashcards

Joining techniques

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Card 1 of 44.1.9
4.1.9
Question

What is the first question when choosing a joint?

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Card 1concept

Question

What is the first question when choosing a joint?

Answer

Does it ever need to come apart? Temporary joints allow repair, upgrade and recycling; permanent ones are stronger, lighter, sealed and cheaper to assemble.

Card 2concept

Question

When is adhering the right choice?

Answer

For dissimilar materials that cannot be welded, thin sheets a rivet would tear, and joints that must be sealed — because load is spread over the bonded area rather than at points.

Card 3concept

Question

What does welding cost?

Answer

Compatible materials only, heat that distorts and weakens the area around the joint, skill or a robot, and no way to reverse it.

Card 4concept

Question

What is the end-of-life consequence of a glued product?

Answer

It is one object that can only be shredded. A screwed product is a pile of materials that can be separated and sorted.

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IB Design Technology Joining techniques Flashcards | 4.1.9 | Aimnova