I-alloys yemveli idlala indima esemgangathweni kwimveliso yesinyithi, nokuba yintsimbi engenasici esetyenziselwa izixhobo zonyango okanye ukutya kwaselwandle, naziphi na izizukulwana zentsimbi ephezulu yokusebenza ephuhliswe kwiminyaka embalwa edlulileyo kwishishini leemoto, okanye isinyithi esinjenge-aluminium kunye titanium.ezinamandla aphezulu kumlinganiselo wobunzima kunye nokumelana nokukhula okuphezulu kwenza ukuba ifaneleke ngokukodwa kwizicelo kwi-aerospace, ukucocwa kwe-oyile kunye namashishini amachiza.
Kukwasebenza okufanayo kwezinye iialloys zensimbi zekhabhoni, ngakumbi iialloyi ezinekhabhoni ethile kunye nomxholo wemanganese.Ngokuxhomekeke kubungakanani bezinto ezidibeneyo, ezinye zazo zifanelekile ukuveliswaiiflange, izixhobokwayeimibhobhokwiindawo zokucocwa kweekhemikhali kunye neoli.Bonke banento enye efanayo: izinto ezisetyenziswa kwezi zicelo kufuneka zibe yi-ductile ngokwaneleyo ukumelana nokuqhekeka kwe-brittle kunye noxinzelelo lwe-corrosion cracking (SCC).
Imibutho yemigangatho efana ne-American Society of Manufacturing Engineers (ASME) kunye ne-ASTM Intl.(eyayifudula ibizwa ngokuba yi-American Society for Testing and Materials) inika isikhokelo kulo mba.Iikhowudi ezimbini zeshishini ezinxulumene-Ibhoyila ye-ASMEkunye ne-Pressure Vessel (BPVD) Icandelo le-VIII, iCandelo 1, kunye ne-ASME B31.3, i-Process Piping - idilesi ye-carbon steel (nantoni na equkethe i-0.29% ukuya kwi-0.54% ye-carbon kunye ne-0.60% ukuya kwi-1.65% ye-manganese, i-iron equkethe izinto).bhetyebhetye ngokwaneleyo ukuze isetyenziswe kwimozulu eshushu, imimandla epholileyo kunye namaqondo obushushu asezantsi -20 degrees Fahrenheit.Nangona kunjalo, ukusilela kutsha nje kubushushu be-ambient kukhokelele kuvavanyo olusondeleyo lwezixa kunye nobungakanani bezinto ezahlukeneyo ze-microalloying ezisetyenziselwa ukwenziwa kweeflange ezinje, izifakelo kunye. imibhobho yentsimbi ye-api.
Kuze kube kutshanje, akukho ASME okanye i-ASTM efuna uvavanyo lwempembelelo ukuqinisekisa ukuba i-ductility yeemveliso ezininzi ze-carbon steel ezisetyenziswa kumaqondo obushushu aphantsi -20 degrees Fahrenheit.Isigqibo sokungabandakanyi iimveliso ezithile sisekelwe kwiimpawu zembali zezinto eziphathekayo.Ngokomzekelo, xa iqondo lokushisa elisezantsi loyilo lwesinyithi (MDMT) liyi-20 degrees Fahrenheit, likhululekile kuvavanyo lwempembelelo ngenxa yendima yalo yendabuko kwizicelo ezinjalo.
Ixesha lokuposa: Apr-19-2023