L’apparecchiatura UBHT trovano applicazione nell’esecuzione di trattamenti termici di solubilizzazione e riduzione delle tensioni dopo curvatura a freddo, come ad esempio i tubi a “U” utilizzati nei fasci tubieri degli scambiatori di calore oppure nelle barre stabilizzatrici delle autovetture nel settore Automotive.
CARATTERISTICHE
• Tensione di alimentazione: 400V 50Hz (altre tensioni a richiesta)
•Potenza: 60-90-140KVA (altre potenze su richiesta)
•Forcella: 60÷2200mm
•Temperatura regolabile tra 300 e 1300°C
•Registrazione temperatura: a traccia continua
•Pirometro ottico: 300÷1300°C
•Raffreddamento macchina: acqua
• Raffreddamento forcella: aria, a richiesta gas inerte
L’apparecchiatura è in grado di riscaldare rapidamente ed uniformemente il tratto di tubo ricurvo mediante due morse collegate ad un generatore di corrente. Al passaggio di un’elevata corrente a bassissima tensione, il tubo in funzione della resistività si riscalda per effetto JOULE, raggiungendo in pochi secondi temperature superiori ai 1100°C. Una volta raggiunta la temperatura richiesta, l’apparecchiatura la mantiene per il tempo desiderato e successivamente inizia il ciclo di raffreddamento che può anche essere accelerato mediante insufflaggio all’interno del tubo di Aria o gas inerte.
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