Yiziphi izinzuzo zemikhiqizo ye-alloy engagqwali
Ama-alloys amelana nokugqwala ngokuvamile awakwazi ukusetshenziswa ezindaweni ezigqwalayo ezinokuncipha okuqinile noma ukuvala uphawu okuphezulu (indawo ene-anoxic), futhi ukusebenza kwemikhiqizo kubuyekezwa njalo, futhi asetshenziswa kabanzi, futhi kukhona abakhiqizi abaningi bemikhiqizo, ukuthi kwenziwa kanjani. khetha Umkhiqizi ovumelana nawe uyisayensi.Ngakolunye uhlangothi, ulwazi kufanele lucatshangelwe ngokwenani, kanti ezinye izici kufanele zicatshangelwe ngokugcwele, njengokuthi ingabe umenzi ulawulwa yini nokuthi isevisi yangemva kokuthengisa iqinisekisiwe yini.
Ingxubevange Emelana Nokugqwala
Yiziphi izinhlobo zama-alloys amelana nokugqwala?
1. Ukugqwala kwensimbi engagqwali
Ikakhulukazi ibhekisela ochungechungeni olujwayelekile lwensimbi engu-300 engagqwali engu-304, 316L, 317L, njll. ekwazi ukumelana nokugqwala komkhathi noma kwamanzi olwandle;insimbi engagqwali ye-austenitic 904L, 254SMO enokumelana nokugqwala okuqinile;duplex steel 2205, 2507, njll;ama-alloys angagqwali aqukethe i-CU 20 alloy, njll.
2. Ingxubevange evikela ukugqwala eyisisekelo
Ikakhulukazi i-Hastelloy alloy ne-NI-CU alloy, njll. Njengoba i-NI yensimbi ngokwayo inesakhiwo se-cubic esigxile ebusweni, ukuzinza kwayo kwe-crystallographic kuyenza ikwazi ukumumatha izakhi eziningi ze-alloying kune-FE, njenge-CR, MO, njll., ukuze ifinyelele ukumelana Ikhono lezindawo ezihlukahlukene;ngesikhathi esifanayo, i-nickel ngokwayo inekhono elithile lokumelana nokugqwala, ikakhulukazi ikhono lokumelana nokugqwala kokucindezeleka okubangelwa ion chloride.Ezimweni eziqinile ezinciphisa ukugqwala, izindawo eziyinkimbinkimbi ze-asidi exubile, nezixazululo eziqukethe ama-halogen ion, ama-alloy amelana nokugqwala asuselwa ku-nickel amelwe i-Hastelloy anezinzuzo eziphelele kunezinsimbi ezingenasici ezisekelwe ensimbi.
3.I-Hastelloy ingeye-nickel-molybdenum-chromium-iron-tungsten nickel-based alloy.Ingenye yezinto zesimanje zensimbi ezikwazi ukumelana nokugqwala.Imelana kakhulu ne-chlorine emanzi, ama-oxidizing chloride ahlukahlukene, izixazululo zikasawoti we-chloride, i-sulfuric acid nosawoti oxidizing, futhi inokumelana nokugqwala okuhle ekushiseni okuphansi kanye nokushisa okuphakathi kwe-hydrochloric acid.Ngakho-ke, emashumini amathathu eminyaka adlule, ibisetshenziswa kabanzi ezindaweni ezonakalisayo, njengemboni yamakhemikhali, imboni ye-petrochemical, i-flue gas desulfurization, i-pulp nephepha, ukuvikelwa kwemvelo kanye neminye imikhakha yezimboni.Idatha ehlukahlukene yokugqwala ye-Hastelloy alloys ijwayelekile, kodwa ayikwazi ukusetshenziswa njengokucaciswa, ikakhulukazi ezindaweni ezingaziwa, futhi izinto ezisetshenziswayo kufanele zikhethwe ngemva kokuhlolwa.Ayikho i-Cr eyanele e-Hastelloy yokumelana nokugqwala ezindaweni ezine-oxidizing enamandla, njenge-nitric acid egxilile eshisayo.Ukukhiqizwa kwalesi singxubevange ngokuyinhloko kungenxa yemvelo yenqubo yamakhemikhali, ikakhulukazi lapho kukhona i-asidi exutshwe, njengepayipi lokukhipha i-flue gas desulfurization system.
Isikhathi sokuthumela: May-15-2023
