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Vytvrdzovanie precipitáciou (starnutie)

Vytvrdzovanie precipitáciou sa používa na zvýšenie pevnosti určitých zliatin, ako sú hliníkové zliatiny, zliatiny na báze niklu a niektoré nehrdzavejúce ocele. Proces pozostáva z troch krokov:

  1. Rozpúšťacie tepelné spracovanie
  2. Kalenie
  3. Starnutie (prirodzené alebo umelé)

V kovovom materiáli sa vytvárajú jemné častice precipitátov, ktoré bránia pohybu dislokácií a zvyšujú pevnosť.

Teplotný rozsah:

  • Rozpúšťacie spracovanie: 450–550 °C
  • Starnutie: 100–200 °C

Používané typy pecí:

  • Elektrická komorová pec
  • Vákuová pec
  • Pec s riadenou atmosférou

Použitie:

Letecké diely, konštrukčné komponenty, tlakové nádoby

Kontaktujte nás

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