309 Stainless Hlau (UNS S30900): Lub Siab -Tsuas Ua Haujlwm Kub

 

Dab tsi yog qhov tseem ceeb ntawm 309 stainless hlau?
Nws feem ntau muaj 22-24% chromium thiab 12-15% npib tsib xee, muab cov qauv austenitic ruaj khov thiab tsim cov txheej tiv thaiv oxide ntawm qhov kub thiab txias.

Nws cov ntawv thov tseem ceeb yog dab tsi?
Nws yog siv rau radiant tubes, cub tawg yob, retorts, burners, thiab lwm yam khoom nyob rau hauv kev kho cua sov thiab muaj cua sov cov cuab yeej ua hauj lwm mus txog 1100℃tsis tu ncua.

Nws piv li cas rau 304 hauv siab -kev pabcuam kub?
Nws muaj qhov ua tau zoo dua oxidation tsis kam thiab lub zog ntawm qhov kub siab, ua rau nws tsim nyog rau kev siv hluav taws xob tas mus li - qhov kub ntawm 304 yuav sai sai.

Nws puas tuaj yeem welded thiab fabricated yooj yim?
Yog lawm, nws tuaj yeem raug welded siv cov txheej txheem austenitic nrog 309 muab tub lim hlau. Nws ua haujlwm siab dua- tus nqi hardening yuav tsum muaj zog ntau dua thaum tsim thiab machining.

Dab tsi yog qhov kev xaiv tseem ceeb rau 309?
Xaiv nws thaum qhov kev khiav hauj lwm kub siab tshaj 900℃nyob rau hauv ib qho chaw oxidizing thiab qhov chaw uas nquag thermal cycling tshwm sim. Nws muab kev ruaj khov thaum qis dua - cov qib alloy tsis ua haujlwm.