I-normalizing iwukwelapha ukushisa okuthuthukisa ukuqina kwensimbi. Ngemva kokushisisa izingxenye zensimbi ezingeni lokushisa elingu-30-50 ℃ ngaphezu kwezinga lokushisa le-Ac3, zibambe isikhathi esithile bese umoya uzipholise uzikhiphe esithandweni. Isici esiyinhloko ukuthi izinga lokupholisa liyashesha kunokukhipha isisu kodwa liphansi kunokucisha. Ngesikhathi sokujwayelekile, izinhlamvu ze-crystalline zensimbi zingacwengwa ngenqubo yokupholisa esheshayo, engazuzi nje kuphela amandla agculisayo, kodwa futhi ithuthukise kakhulu ukuqina (inani le-AKV) futhi inciphise ukuthambekela kwezingxenye zokuqhekeka Ngemva kokujwayelekile, izici ezibanzi zemishini. kwamanye amapuleti ensimbi ashisayo ashisayo ashisayo, ama-forging ensimbi aphansi, kanye nokubunjwa kungathuthukiswa kakhulu, kanye nokusebenza kokusika kungathuthukiswa.
I-normalizing isetshenziselwa ikakhulukazi izingcezu zensimbi. Ukujwayela nokufakwa kwensimbi evamile kuyefana, kodwa izinga lokupholisa liphakeme kancane futhi i-microstructure icolekile. Ezinye izinsimbi ezinezinga lokupholisa elibucayi eliphansi kakhulu zingaguqula i-austenite ibe i-martensite ngokupholisa emoyeni. Lokhu kwelashwa akujwayeleki futhi kubizwa ngokuthi ukucisha ukupholisa umoya. Ngokuphambene nalokho, ezinye izinto zokusebenza ezinkulu ze-cross-section ezenziwe ngensimbi ezinezinga eliphezulu lokupholisa elibucayi azikwazi ukuthola i-martensite ngisho nangemva kokucisha emanzini, futhi umphumela wokucisha useduze nokujwayelekile. Ukuqina kwensimbi ngemva kokujwayelekile kuphakeme kunalokho ngemva kokukhishwa kwe-annealing. Lapho kujwayelekile, akudingekile ukupholisa ucezu lomsebenzi esithandweni somlilo njenge-annealing, ethatha isikhathi esifushane somlilo futhi inokukhiqiza okuphezulu. Ngakho-ke, ekukhiqizeni, i-normalization ivame ukusetshenziswa esikhundleni sokudonsa ngangokunokwenzeka. Ngensimbi enekhabhoni ephansi enokuqukethwe kwekhabhoni engaphansi kuka-0.25%, ubulukhuni obuzuzwa ngemuva kokujwayelekile bumaphakathi futhi bulungele ukusika kunokudonsa. I-normalizing ngokuvamile isetshenziselwa ukusika kanye nokulungiselela umsebenzi. Ngensimbi ye-carbon ephakathi ne-carbon content ka-0.25-0.5%, ukujwayelekile kungahlangabezana nezidingo zokusika ukucutshungulwa. Ezingxenyeni ezingasindi ezenziwe ngalolu hlobo lwensimbi, i-normalization ingasetshenziswa futhi njengokwelashwa kokugcina kokushisa. Ukwenza kujwayelekile insimbi yensimbi ye-carbon ephezulu kanye nensimbi enensimbi ukususa ama-carbide enethiwekhi esakhiweni futhi kulungiselelwe ukwakheka kwe-periodization annealing.
Ukwelashwa kokugcina kokushisa kwezingxenye ezivamile zesakhiwo, ngenxa yezakhiwo ezingcono eziphelele zemishini ye-workpiece ngemva kokujwayelekile uma kuqhathaniswa nesimo se-annealed, kungasetshenziswa njengokwelashwa kokushisa kokugcina kwezinye izingxenye ezijwayelekile zesakhiwo ezinokucindezeleka okuphansi kanye nezidingo zokusebenza, ukunciphisa izinqubo. , yonga amandla, futhi uthuthukise ukusebenza kahle kokukhiqiza. Ukwengeza, ezingxenyeni ezithile ezimise okwezinkulu noma eziyinkimbinkimbi, lapho kunengozi yokuqhekeka ngesikhathi sokucisha, ukujwayela ngokuvamile kungase kuthathele indawo yokwelashwa kokucisha nokushisa njengokwelashwa kokushisa kokugcina.
I-imeyili:oiltools14@welongpost.com
Grace Ma
Isikhathi sokuthumela: Oct-23-2023
