Ukufakwa kwentsimbi ebandayo
I-annealing yentsimbi etsalwa ngokubanda isetyenziswa ngokuqhelekileyo kwimveliso yenkqubo yonyango lokuqala lobushushu.Uninzi lwamacandelo omatshini kunye nobunjineli, i-mold rough inokuphelisa uxinzelelo lwangaphakathi kunye nokubunjwa kokubunjwa, ukubunjwa kunye ne-weldment inhomogeneity;inokuphucula kwaye ilungelelanise iipropathi zentsimbi, kunye namalungiselelo ombutho wenkqubo elandelayo yokwenza emva kokuqhawula.Ukusebenza kweendawo ezingabalulekanga kangako, ezingabalulekanga kangako kunye nezinye eziqhelekileyo zokugalelwa, i-weldments, i-annealing ingasetyenziswa njengonyango lokugqibela lobushushu.
I-annealing yentsimbi ifudunyezwa kwiqondo lokushisa elifanelekileyo, ibambe ixesha elithile, kwaye ipholile ngokukhawuleza ukwenzela ukuba isondele kwinkqubo yonyango yokushisa yombutho olinganiselayo.Injongo ye-annealing i-uniform chemical composition, ukuphucula iimpawu zomatshini kunye nokusebenza kwenkqubo, ukuphelisa okanye ukunciphisa uxinzelelo kunye nokwenza umbutho ulungele unyango lokugqibela lokushisa kweengxenye.Inkqubo ye-annealing yintlobo ezininzi zentsimbi, ubushushu bokufudumala bunokwahlulwa lube ngamacandelo amabini: enye ikwi-annealing ngaphezu kweqondo lokushisa elibalulekileyo (i-Ac3 okanye i-Ac1), eyaziwa ngokuba yi-phase change recrystallization annealing.Kubandakanywa ukuqhotyoshelwa ngokupheleleyo, okufakwe ngokupheleleyo, ukuqhotyoshelwa kwe-isothermal, ukuhlaliswa kwebhola kunye nokuhlanjululwa kwebhola;enye ikwiqondo lobushushu elibalulekileyo (Ac1) emva kokuvalelwa, okwakwaziwa njengobushushu obuphantsi.Kubandakanya i-recrystallization annealing, ukuya kuxinzelelo kunye ne-dehydrogenation annealing.Indlela yokupholisa inokohlulwa ibe yi-annaal yokupholisa eqhubekayo kunye ne-isothermal annealing.
Ukucima intsimbi epholileyo
Ukucima intsimbi epholileyo kubaluleke kakhulu kwinkqubo yonyango lokushisa, iinkqubo ezisetyenziswa ngokubanzi.Ukucima kunokuphucula kakhulu amandla kunye nobunzima bentsimbi.Ukuba ifaniswe nobushushu obahlukileyo bobushushu bunokuphelisa okanye bunciphise uxinzelelo lokuphelisa, kodwa namandla, ubulukhuni kunye nokuqina kunye, ukuhlangabezana neemfuno ezahlukeneyo.Ngoko ke, ukucima kunye nokuvutha akukwazi ukwahlula kwiinkqubo ezimbini zokunyanga ukushisa.Ukucima intsimbi kushushu ngaphezu kwendawo ebaluleke kakhulu kunomlinganiselo wokupholisa obalulekileyo (Vc) kwi-insulation emva kokupholisa, ukuze ufumane inkqubo yonyango yokushisa ye-martensite okanye i-bainite ephantsi.
Ixesha lokuposa: Sep-20-2019