metals! Flashcards
what are metal shears?
straight or curved shears, for cutting straight or curved lines in thick sheet metal 2mm
What are bench shears?
Similar to metal shears but larger and mounted on to a bench.
Larger and thicker blades for cutting straight lines in thicker sheet metal 6mm
what are throatless shears?
Shears that have no throat, so the metal can be moved around freely, producing curved or straight cuts
What’s a nibbler
removes a think section of metal in the middle that goes to waste
distorts the metal less
What are hacksaws
They have a C shape adjustable frame that holds blades of different sizes
used for very thin metals
what is metal pressing?
Stamping, pressing sheet metal into a 3D shape between two DIES
used for embossing, bending e.g. car body panels
How does metal folding work
Small objects you can bend it over a bench vice and hammer it into place
Larger objects require a folder, metal is placed on the bed of the machine and held or clamped in place along the crease line. The bed is then hinged at the crease line forcing the metal to form a neat bend.
What is brazing?
A form of soldering at very high temperatures,
joins metals together such as bronze, steel, aluminium, iron and copper that all have different melting points
positives of Brazing
Brazed joints are airtight and water tight and can be plated over to form a seamless appearance
Negatives of Brazing
requires temperatures of over 1000 degrees
what is flux
a chemical that removes contaminates when soldering
What is a jig
A device that guides a tool
What’s a fixture
a device that holds the tool
What is a template used for
to mark out awkward or irregular shapes repeatedly
you can use any thin, fairly rigid material
What is a pattern?
Something that fixes directly on to the material to guide cutting