Tool steels Flashcards
what are the 5 types of tool steels?
Water hardened
Shock resisting
Cold worked
hot worked
high speed
what are the characteristics of water hardened tool steel?
High tensile strength
low ductility
poor hardenabilty
what are the characteristics of shock resisting tool steels?
High impact resistance
ecellent toughness
good wear resistance
highly hardenability and softening resistance
What are the characteristics of cold worked tool steels?
high abrasion
wear resistance
higher toughness
high inmpact resistance
What are the characteristics of hot worked tool steels?
resistance to deformation at hot working temps
mechanical and thermal shock resistance
wear and erosion resistance
heat checking resistance
What are the characteristics of high speed tool steel?
wear resistance
high hardness\
edge retention
What are the 2 types of tool wear?
Crater wear - occurs on top rake face
Flank wear - occurs on flank (side)
What is the manufacturing processes of cemented carbides
Raw materials are mixed
spray dried
pressed
sintered
grinding
coating
