Ama-alloy endabuko adlala indima ejwayelekile ekukhiqizweni kwezinsimbi, kungakhathaliseki ukuthi insimbi engagqwali esetshenziswa kumadivayisi ezokwelapha noma ukudla kwasolwandle, noma yiziphi izizukulwane zezinsimbi ezisebenza kahle kakhulu ezathuthukiswa eminyakeni embalwa edlule embonini yezimoto, noma izinsimbi ezifana ne-aluminium ne-titanium. Ezinamandla aphezulu nesisindo kanye nokumelana nokugqwala okuphezulu kwenza zifaneleke kakhulu ekusetshenzisweni kwezindiza, ukuhluzwa kwamafutha kanye nezimboni zamakhemikhali.
Lokhu kusebenza nakwezinye izinhlobo zensimbi yekhabhoni, ikakhulukazi izinhlobo zensimbi ezinokuqukethwe okuthile kwekhabhoni kanye ne-manganese. Kuye ngenani lezinto ezixubayo, ezinye zazo zilungele kahle ukwenziwa kwe-ama-flange, izinto zokufakafuthiamapayipiezindaweni zokuhlanza amakhemikhali namafutha. Zonke zinento eyodwa efanayo: izinto ezisetshenziswa kulezi zinhlelo kumele zibe bushelelezi ngokwanele ukuze zikwazi ukumelana nokuqhekeka okubuthakathaka kanye nokuqhekeka kokugqwala kokucindezeleka (SCC).
Izinhlangano ezijwayelekile ezifana ne-American Society of Manufacturing Engineers (ASME) kanye ne-ASTM Intl. (eyayaziwa ngokuthi i-American Society for Testing and Materials) zinikeza isiqondiso kulokhu. Amakhodi amabili emboni ahlobene-Ibhoyila ye-ASMEkanye ne-Pressure Vessel (BPVD) Isigaba VIII, Isigaba 1, kanye ne-ASME B31.3, i-Process Piping - ibhekana nensimbi yekhabhoni (noma yini equkethe i-carbon engu-0.29% kuya ku-0.54% kanye ne-manganese engu-0.60% kuya ku-1.65%, izinto eziqukethe insimbi). iguquguquka ngokwanele ukusetshenziswa ezindaweni ezishisayo, ezindaweni ezifudumele kanye namazinga okushisa aphansi njengo--20 degrees Fahrenheit. Kodwa-ke, izinkinga zakamuva ekushiseni okuzungezile ziholele ekuhlolweni okuseduze kwamanani kanye nezilinganiso zezinto ezahlukahlukene ze-microalloying ezisetshenziswa ekwakhiweni kwama-flange, izinsimbi kanye amapayipi ensimbi e-api.
Kuze kube muva nje, i-ASME noma i-ASTM azidingi ukuhlolwa komthelela ukuqinisekisa ukuguquguquka kwemikhiqizo eminingi yensimbi yekhabhoni esetshenziswa emazingeni okushisa aphansi njengo--20 degrees Fahrenheit. Isinqumo sokukhipha imikhiqizo ethile sisekelwe ezimpahleni zomlando zezinto zokwakha. Isibonelo, lapho izinga lokushisa eliphansi lomklamo wensimbi (MDMT) lingu--20 degrees Fahrenheit, alidingi ukuhlolwa komthelela ngenxa yendima yalo yendabuko ekusetshenzisweni okunjalo.
Isikhathi sokuthunyelwe: Ephreli-19-2023