Ziyenera kunenedwa kuti mapaipi onse austenitic zosapanga dzimbiri zitsulo madzimadzi mipope ndi makhalidwe a dzimbiri kukana, kutentha kukana ndi mkulu kuthamanga kukana.Pokhapokha, ali ndi mawonekedwe ndi magwiridwe antchito osiyanasiyana:
304: Kukana kwa dzimbiri wamba komanso chitoliro chopanda chitsulo chosapanga dzimbiri chosasunthika, 304 chimakana bwino kuwononga dzimbiri, kuchita bwino kwa dzimbiri, kuzizira komanso kupondaponda, ndipo chitha kugwiritsidwa ntchito ngati chitsulo chosapanga dzimbiri.Panthawi imodzimodziyo, makina azitsulo akadali abwino pa -180 ° C.M'malo okhazikika, chitsulo chimakhala ndi pulasitiki yabwino, kulimba komanso kuzizira;imakhala ndi kukana kwa dzimbiri mu ma oxidizing acid, mpweya, madzi ndi media zina.
304L ndi mtundu wa 304 zitsulo zosapanga dzimbiri zokhala ndi mpweya wocheperako ndipo zimagwiritsidwa ntchito pomwe kuwotcherera kumafunika.Mpweya wochepa wa carbon umachepetsa mvula ya carbides m'madera omwe amakhudzidwa ndi kutentha pafupi ndi weld, zomwe zingayambitse intergranular corrosion (weld attack) muzitsulo zosapanga dzimbiri m'madera ena.
Kukana kwa dzimbiri kwa chitoliro chosapanga dzimbiri cha 316/316L ndikwabwino kuposa chitoliro chachitsulo chosapanga dzimbiri cha 304, ndipo chimakhala ndi kukana kwa dzimbiri popanga zamkati ndi pepala.Chifukwa chowonjezera cha Mo, chimakhala ndi kukana kwa dzimbiri, makamaka kukana kwa pitting;kutentha kwamphamvu kumakhalanso kwabwino kwambiri;ntchito yabwino kuumitsa (ofooka maginito pambuyo processing);non-magnetic mu solid solution state.Imakhalanso ndi kukana kwa chloride corrosion, motero imagwiritsidwa ntchito m'malo am'madzi kapena ntchito zomanga m'mphepete mwa nyanja.
321 zitsulo zosapanga dzimbiri ndi Ni-Cr-Ti mtundu austenitic zosapanga dzimbiri zitsulo chitoliro mafakitale chitoliro, ntchito yake ndi ofanana kwambiri ndi 304, koma chifukwa kuwonjezera zitsulo titaniyamu, ali bwino intergranular dzimbiri kukana ndi mkulu kutentha mphamvu.Chifukwa cha kuwonjezera kwa titaniyamu yachitsulo, imayendetsa bwino mapangidwe a chromium carbide.321 Chitsulo chosapanga dzimbiri chimakhala ndi kuphulika kwakukulu kwa kutentha kwambiri (Stress Rupture) magwiridwe antchito komanso kukana kutentha kwapang'onopang'ono (Creep Resistance) makina amakina opsinjika ndi abwino kuposa 304 chitsulo chosapanga dzimbiri.Ti mu 321 chitsulo chosapanga dzimbiri chitoliro chilipo ngati chinthu chokhazikika, komanso ndi kalasi yachitsulo yotentha kwambiri, yomwe ili yabwino kwambiri kuposa 316L pa kutentha kwakukulu.Imakhala ndi kukana kwa dzimbiri mu ma organic ndi ma inorganic acid amitundu yosiyanasiyana komanso kutentha, makamaka muzofalitsa za oxidizing, ndipo imagwiritsidwa ntchito popanga zomangira ndi mapaipi a zotengera zosamva za asidi ndi zida zosavala.Ili ndi kukana kutentha kwambiri, nthawi zambiri pafupifupi madigiri 700, ndipo nthawi zambiri imagwiritsidwa ntchito m'mafakitale amagetsi.Amagwiritsidwa ntchito pamakina am'munda m'mafakitale amafuta, malasha ndi mafuta omwe amafunikira kukana kwambiri kuwononga malire a tirigu, mbali zosagwira kutentha kwa zida zomangira ndi magawo omwe ndi ovuta kutenthetsa.
310S: The ambiri ntchito makutidwe ndi okosijeni kukana, kukana dzimbiri, kutentha kugonjetsedwa ndi mafakitale zosapanga dzimbiri chitsulo chosapanga dzimbiri chitoliro ndi mafakitale welded chitoliro.Ntchito wamba: zida za ng'anjo, zida zoyeretsera magalimoto.310S chitsulo chosapanga dzimbiri chitoliro ndi austenitic chromium-nickel chitsulo chosapanga dzimbiri chokhala ndi kukana kwambiri kutentha kwa okosijeni, kukana kwa asidi ndi alkali, komanso kukana dzimbiri.Chifukwa cha kuchuluka kwa chromium (Cr) ndi faifi tambala (Ni), ili ndi mphamvu zokwawa bwino kwambiri.Ikhoza kugwira ntchito mosalekeza pa kutentha kwakukulu ndipo imakhala ndi kutentha kwabwino kwambiri.Pamene kutentha kumapitirira 800, kumayamba kufewetsa, ndipo kupanikizika kovomerezeka kumayamba kuchepa mosalekeza.Kutentha kwakukulu kwautumiki ndi 1200 ° C, ndipo kugwiritsa ntchito kosalekeza ndi 1150 ° C.Mipope yachitsulo yosamva kutentha kwambiri imagwiritsidwa ntchito mwapadera popanga machubu ang'anjo yamagetsi ndi zina.Pambuyo pakuwonjezera kaboni muzitsulo zosapanga dzimbiri za austenitic, mphamvu zimakhazikika chifukwa champhamvu yake yolimbitsa.Zomwe zimapangidwa ndi chitsulo chosapanga dzimbiri cha austenitic zimachokera ku chromium ndi faifi tambala.Zinthu monga molybdenum, tungsten, niobium ndi titaniyamu zimawonjezeredwa ngati maziko.Chifukwa chakuti bungwe lake ndi mawonekedwe a cubic omwe ali ndi nkhope, amakhala ndi mphamvu zambiri komanso amatha kukwawa pa kutentha kwakukulu.
Nthawi yotumiza: Jan-31-2023
