Ukuze kuphuculwe ubulukhuni bomphezulu kunye nokumelana nokuguguleka kweIityhubhu eziziingxande eziyi-16Mn, unyango lomphezulu, olufana nelangatye lomphezulu, ukucima umphezulu onamaza aphezulu, unyango lobushushu beekhemikhali, njl. kufuneka lwenziwe kwiityhubhu eziziingxande. Ngokubanzi, uninzi lweendawo ezinamaza aphezulu naphakathi ziyacinywa, kwaye ubushushu bokufudumeza bungama-850-950 degrees. Ngenxa yokuqhuba kakubi kobushushu, isantya sokufudumeza akufuneki sibe sikhawulezileyo kakhulu. Ngaphandle koko, kuya kuvela iintanda ezinyibilikayo kunye neentanda ezicinywayo. Ukucima iintanda eziphezulu kufuna ukuba i-matrix eqhelekileyo ibe yi-pearlite. Ukupholisa isisombululo se-spray yamanzi okanye i-polyvinyl alcohol. Ubushushu bokufudumeza bungama-200-400 ℃, kwaye ubunzima bungama-40-50hrc, nto leyo enokuqinisekisa ubunzima kunye nokumelana nokuguguleka kwe-ityhubhu yesikwereumphezulu.
Ezi ngongoma zilandelayo zibalulekileyo maziqatshelwe xa kucinywaItyhubhu yesikwere eyi-16Mn:
(1)Umbhobho omde akufuneki ufudunyezwe ngokuthe nkqo kwi-oven yetyuwa okanye kwi-oven yomthombo kangangoko kunokwenzeka, ukuze kuncitshiswe ukuguquguquka okubangelwa bubunzima bawo obupheleleyo.
(2)Xa kufudunyezwa imibhobho eneendawo ezahlukeneyo kwisithando somlilo esinye, imibhobho emincinci mayibekwe kwisiphelo sangaphandle sesithando somlilo, kwaye imibhobho emikhulu kunye nemibhobho emincinci mayibekwe ixesha ngokwahlukeneyo.
(3)Isixa ngasinye sokutshaja kufuneka sihambelane nenqanaba lamandla esitovini. Xa isixa sokutya sikhulu, kulula ukusicinezela kwaye ubushushu buyanyuka, kwaye ixesha lokufudumeza kufuneka landiswe.
(4)Ubushushu bokucima iityhubhu zesikwere ezibuxande ezicinywe ngamanzi okanye ngetyuwa kufuneka buthathwe njengomda osezantsi, kwaye ubushushu bokucima ioyile okanye ityuwa enyibilikisiweyo kufuneka buthathwe njengomda ophezulu.
(5)Ngexesha lokucima i-dual medium, ixesha lokuhlala kwindawo yokuqala yokucima kufuneka lilawulwe ngokweendlela ezintathu ezingentla. Ixesha lokuhamba ukusuka kwindawo yokuqala yokucima ukuya kwindawo yesibini yokucima kufuneka libe lifutshane kangangoko, kungcono imizuzwana eyi-0.5-2.
(6)Imibhobho enomphezulu wayo ungavumelekanga ukuba i-oxidation okanye i-decarburization kufuneka ifudunyezwe kwisithando sokuhlambela ityuwa esilinganisiweyo okanye kwisithando somoya esikhuselayo. Ukuba ayifikeleli kwiimeko, ingafudunyezwa kwisithando somoya esimelana nomoya, kodwa kufuneka kuthathwe amanyathelo okukhusela.
(7)Emva kokuba ityhubhu engunxande eyi-16Mn intywiliswe ngokuthe nkqo kwindawo yokucima, ayijiki, iya phezulu nasezantsi, kwaye iyeke ukushukuma kwendawo yokucima.
(8)Xa amandla okupholisa eendawo ezifuna ubulukhuni obuphezulu enganele, yonke indawo ingantywiliselwa kwindawo yokucima ngaxeshanye, kwaye iindawo zingapholiswa ngokutshiza ulwelo ukuphucula isantya sokupholisa.
(9)Kufuneka ibekwe kwindawo yokufudumeza esebenzayo. Ubungakanani bokutshaja, indlela yokutshaja kunye nendlela yokufaka izinto ezifunekayo kufuneka ziqinisekise ukuba ubushushu bokufudumeza buyafana, kwaye akunakwenzeka ukuba kubangele ukuguquka nezinye iziphene.
(10)Xa kufudunyezwa kwisithando setyuwa, akufuneki kube kufutshane kakhulu ne-electrode ukuze kuthintelwe ubushushu obuphezulu bendawo. Umgama kufuneka ube ngaphezulu kwe-30mm. Umgama ukusuka eludongeni lwesithando kunye nobunzulu bokuntywiliselwa ngaphantsi komgangatho wolwelo kufuneka ulingane ne-30mm.
(11)Intsimbi yesakhiwo kunye nentsimbi yekhabhoni zinokufudunyezwa ngqo kwisithando somlilo esinobushushu bokucima okanye iqondo lobushushu lokucima okanye iqondo lobushushu lokucima libe ngama-20-30 ℃ ngaphezulu kobushushu bokucima. Intsimbi yekhabhoni ephezulu kunye nentsimbi ye-alloy ephezulu kufuneka ifudunyezwe kubushushu obumalunga nama-600 ℃ ize inyuswe iye kubushushu bokucima.
(12)Ubushushu bokucima bunokwandiswa ngokufanelekileyo kwimibhobho enomaleko oqinileyo, kwaye ubushushu bokucima obuphantsi bunokukhethwa kwimibhobho enomaleko oqinileyo ongaphantsi.
(13)Umphezulu wetyhubhu yesikwere eyi-16Mn awufanele ube neoyile, isepha kunye nolunye uthuli. Ngokusisiseko, ubushushu bamanzi abuyi kudlula kwi-40℃.
Ixesha lokuthumela: Septemba-16-2022
