Introduction to Materials Exam 2
questions and answers graded A+
All the types of metal processing - ANS ✔Solidification, deformation process, particulate
process, material removal process, and additive manufacturing
what can solidification process can refer to - ANS ✔casting
what can deformation process can refer to - ANS ✔hot forging
what can particulate processing refer to - ANS ✔sintering
what can material removal process refer to - ANS ✔machining
what can additive manufacturing refer to - ANS ✔metal 3d printing
advantages of casting - ANS ✔-can be used for complex geometries
-can be casted to its net shape (no second process required)
-can make very large parts
-can be used for any metal that can be heated into a liquid
disadvantages of casting - ANS ✔-poor mechanical properties
-parts can come out porose due to unwanted air during the casting
-dimensions might be off due to shrinkage
-poor surface finish
, -safety hazard of liquid metal
expendable mold casting - ANS ✔mold has to be destroyed in order to remove the part
(normally made out of a combination of plaster, sand, and ceramics)
permanent mold casting - ANS ✔Molds made of metals with strength at high temperatures
(sometimes might have cooling channels built into the mold for efficiency)
what cant be used with plaster molds - ANS ✔ferrous alloys (metals that mostly consist of iron)
cant be used in plaster molds
what is investment casting - ANS ✔can cast at a faster rate but in the process both the pattern
and mold are destroyed
die casting - ANS ✔type of permanent mold casting in which a force is applied to push molten
metal into the mold
squeeze casting - ANS ✔type of permanent mold casting in which metal is put into a mold and a
male mold is forced onto molten metal in the female mold to fill all the cavities of the mold
centrifugal casting - ANS ✔a type of permanent casting in which molten metal is poured into a
mold and spun so the part can be hollowed out
hot work - ANS ✔-any process that deforms metal while hot
-metal will recrystallize after being deformed
-results in unstrained and stress free grain structures
cold work - ANS ✔-any process that deforms metal while cold
questions and answers graded A+
All the types of metal processing - ANS ✔Solidification, deformation process, particulate
process, material removal process, and additive manufacturing
what can solidification process can refer to - ANS ✔casting
what can deformation process can refer to - ANS ✔hot forging
what can particulate processing refer to - ANS ✔sintering
what can material removal process refer to - ANS ✔machining
what can additive manufacturing refer to - ANS ✔metal 3d printing
advantages of casting - ANS ✔-can be used for complex geometries
-can be casted to its net shape (no second process required)
-can make very large parts
-can be used for any metal that can be heated into a liquid
disadvantages of casting - ANS ✔-poor mechanical properties
-parts can come out porose due to unwanted air during the casting
-dimensions might be off due to shrinkage
-poor surface finish
, -safety hazard of liquid metal
expendable mold casting - ANS ✔mold has to be destroyed in order to remove the part
(normally made out of a combination of plaster, sand, and ceramics)
permanent mold casting - ANS ✔Molds made of metals with strength at high temperatures
(sometimes might have cooling channels built into the mold for efficiency)
what cant be used with plaster molds - ANS ✔ferrous alloys (metals that mostly consist of iron)
cant be used in plaster molds
what is investment casting - ANS ✔can cast at a faster rate but in the process both the pattern
and mold are destroyed
die casting - ANS ✔type of permanent mold casting in which a force is applied to push molten
metal into the mold
squeeze casting - ANS ✔type of permanent mold casting in which metal is put into a mold and a
male mold is forced onto molten metal in the female mold to fill all the cavities of the mold
centrifugal casting - ANS ✔a type of permanent casting in which molten metal is poured into a
mold and spun so the part can be hollowed out
hot work - ANS ✔-any process that deforms metal while hot
-metal will recrystallize after being deformed
-results in unstrained and stress free grain structures
cold work - ANS ✔-any process that deforms metal while cold
