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Linkedin – Giorgio Damiani
LA METALLURGIA DELLE POLVERI
La definizione che viene
normalmente usata di
“metallurgia delle polveri” recita
che sia l’insieme delle attività che
permettono la produzione di
manufatti a partire da polveri
metallico/ceramiche mediante il
processo denominato
sinterizzazione.
Il processo prevede la
compressione della polvere, di
solito in un contenitore
opportuno, per ottenere un
oggetto compattato con una
coesione del materiale sufficiente
per essere maneggiato, che
viene successivamente
riscaldato, solitamente in
atmosfera inerte, protettiva, ad
una temperatura inferiore al
punto di fusione del costituente
principale, durante il quale le
singole particelle di polvere si
“fondono” fra loro e conferiscono
al materiale le caratteristiche
fisiche - durezza, elasticità,
resistenza - desiderate.
La fase di compattazione a caldo
prende il nome di sinterizzazione.
Un esempio calzante è la
produzione di utensili ed inseriti in
metallo duro (WIDIA, Hard metal
o metallo duro, SiC, CERMET,
ecc) di aziende come Bosch –
Freud o Sandvik

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La metallurgia delle polveri

  • 1. Linkedin – Giorgio Damiani LA METALLURGIA DELLE POLVERI La definizione che viene normalmente usata di “metallurgia delle polveri” recita che sia l’insieme delle attività che permettono la produzione di manufatti a partire da polveri metallico/ceramiche mediante il processo denominato sinterizzazione. Il processo prevede la compressione della polvere, di solito in un contenitore opportuno, per ottenere un oggetto compattato con una coesione del materiale sufficiente per essere maneggiato, che viene successivamente riscaldato, solitamente in atmosfera inerte, protettiva, ad una temperatura inferiore al punto di fusione del costituente principale, durante il quale le singole particelle di polvere si “fondono” fra loro e conferiscono al materiale le caratteristiche fisiche - durezza, elasticità, resistenza - desiderate. La fase di compattazione a caldo prende il nome di sinterizzazione. Un esempio calzante è la produzione di utensili ed inseriti in metallo duro (WIDIA, Hard metal o metallo duro, SiC, CERMET, ecc) di aziende come Bosch – Freud o Sandvik