Pakati pa mitundu yosiyanasiyana ya zitsulo zosapanga dzimbiri, magiredi 304, 304L, ndi 304H amagwiritsidwa ntchito kwambiri. Ngakhale angawoneke ofanana, giredi iliyonse ili ndi mawonekedwe akeake komanso mawonekedwe ake.
Gulu304 chitsulo chosapanga dzimbirindiyomwe imagwiritsidwa ntchito kwambiri komanso yosunthika pamitundu 300 yazitsulo zosapanga dzimbiri. Lili ndi 18-20% chromium ndi 8-10.5% nickel, pamodzi ndi mpweya wochepa, manganese, ndi silicon. Gululi lili ndi kukana kwa dzimbiri komanso mawonekedwe abwino. Nthawi zambiri amagwiritsidwa ntchito ngati zida zakukhitchini, kukonza chakudya, komanso kukongoletsa kamangidwe.
304L chitsulo chosapanga dzimbiri chitolirondi otsika mpweya zitsulo chitoliro kusiyanasiyana kalasi 304, ndi pazipita mpweya zili 0.03%. Mpweya wochepa wa carbon uwu umathandizira kuchepetsa mvula ya carbide panthawi yowotcherera, kuti ikhale yoyenera kuwotcherera. Zomwe zili m'munsi mwa kaboni zimachepetsanso chiopsezo cha kukhudzidwa, komwe ndiko kupanga ma chromium carbides pamalire a tirigu, zomwe zingayambitse kuwonongeka kwa intergranular. 304L imagwiritsidwa ntchito nthawi zambiri pakuwotcherera, komanso malo omwe chiwopsezo cha dzimbiri chimakhala chodetsa nkhawa, monga kukonza mankhwala ndi zida zamankhwala.
304H chitsulo chosapanga dzimbirindi mtundu wapamwamba wa kaboni wa grade 304, wokhala ndi mpweya woyambira 0.04-0.10%. Mpweya wochuluka wa carbon umapereka mphamvu zowonjezera kutentha komanso kukana kukwawa. Izi zimapangitsa 304H kukhala yoyenera kugwiritsa ntchito kutentha kwakukulu, monga zotengera zokakamiza, zotenthetsera kutentha, ndi ma boilers a mafakitale. Komabe, kuchuluka kwa mpweya wa carbon kumapangitsanso 304H kukhala yosavuta kukhudzidwa ndi dzimbiri la intergranular, makamaka pa ntchito zowotcherera.
Mwachidule, kusiyana kwakukulu pakati pa magirediwa ndizomwe zili ndi kaboni komanso momwe amawotcherera komanso kutentha kwambiri. Gulu la 304 ndilomwe limagwiritsidwa ntchito kwambiri komanso cholinga chambiri, pomwe 304L ndi chisankho chomwe chimakondedwa kwambiri pazowotcherera ndi malo omwe dzimbiri ndi nkhawa. 304H ili ndi mpweya wochuluka kwambiri ndipo ndi yoyenera kugwiritsira ntchito kutentha kwakukulu, koma kutengeka kwake ku tcheru ndi intergranular corrosion kumafuna kuganizira mozama. Posankha pakati pa magiredi awa, ndikofunikira kuganizira zofunikira za pulogalamuyo, kuphatikiza malo ogwirira ntchito, kutentha, ndi zosowa zowotcherera.
Lumikizanani Nafe Kuti Mumve Zambiri
Email: sales01@royalsteelgroup.com(Sales Director)
chinaroyalsteel@163.com (Factory Contact)
Tel/WhatsApp: +86 153 2001 6383
Nthawi yotumiza: Aug-08-2024