Abrading Filing Grinding A bench grinder. A grinding disk. Sanding Emery cloth CHARACTERISTICS PREPARATION PROCESSES ADVANTAGES PICTURE p60-61 6 Heat treatment annealing • The metal is heated (Not to • retain a sharp edge and tempering ‘red hot’) (1) (1) • The temperatures are • harder than the signified by the changing material to be cut (1) colour of the • reduce wear (1) metal when heated (1) • It is tempered to • The metal is then quenched remove some of the in water (1) brittleness / hardness / to increase the toughness of the blade (1) making the blade more flexible / reduce the chances of it snapping / withstand impact (1) hardening. p62 7. Conversion and Seasoning conversion and through (slab sawn)
Abrading Filing Grinding A bench grinder. A grinding disk. Sanding Emery cloth 6 Heat treatment p60-61 CHARACTERISTICS PREPARATION PROCESSES ADVANTAGES PICTURE annealing and tempering • The metal is heated (Not to ‘red hot’) (1) • The temperatures are signified by the changing colour of the metal when heated (1) • The metal is then quenched in water (1) • retain a sharp edge (1) • harder than the material to be cut (1) • reduce wear (1) • It is tempered to remove some of the brittleness / hardness / to increase the toughness of the blade (1) making the blade more flexible / reduce the chances of it snapping / withstand impact (1) hardening. 7. Conversion and Seasoning p62 conversion and through (slab sawn)
full_table_resistant.docx