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Mechanical Engineering

Explore questions in the Mechanical Engineering category that you can ask Spark.E!

___________ are better insulators that liquids and solids
substances ________ as they are heated, decreasing density
True or False: warmer objects always heat cooler objects
raditation can be _______________ or ________________
an object with a ____ ____ _____ need very LITTLE energy to change the temp.
does mass increase as thermal energy increases
the more kinetic energy molecules have the ___________ the temp and the _________ the molecules move
an object with a _____ _____ _____ needs A LOT of energy to change the temp.
True or False:Forging is the oldest of the metal forging operations
_____• Take a large tool and die• Exert several tons of force very quickly• Press metal objects into the shape you want
Stamping: at normal temperature, a metal sheet is pressed on a stamping press machine by a stamping die to cause separation or ____
True or False:clay, binders or resins are used for EPC molds; the sand is just loose and unbonded
when gravity die casting in the ______ method a permanent mold is coated in advance of casting, coating composed of; carrier-water, binder-sodium silicate, refractory-talc, clay etc. coating
True or False:Cold Forging: typically refers to forging at or near room temperature- it requires more mechanical energy
True or False:Hot forging increases the mechanical energy required to form the metal
Forging is traditionally a ___working process, but many types are performed ___
_______ is the process of producing a casting that is free from voids or shrinkage defects by feeding molten metal into the part as it cools
_____ are foreign particles or contaminants(sand, oxides, dross) that become trapped in thecasting material during the pouring process.Inclusions can lead to weak spots and affect itscasting integrity
Metal stamping is a _____ process that makes use of dies and stamping presses to form sheet metal.
True or False:Sand molding is the oldest form of casting.

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