Indlela yokufaka isithando somlilo
I-agent ye-carburizing ifanelekile ukunyibilika kwisithando somlilo se-induction, kodwa ukusetyenziswa okuthe ngqo akufani ngokuhambelana neemfuno zenkqubo.
(1) Kwinqanaba eliphakathi lokunyibilika kwesithando somlilo usebenzisa i-carburizing agent, ngokomlinganiselo okanye iimfuno ezilinganayo zekhabhoni kunye nezinto ezongeziweyo kwindawo engezantsi yesithando somlilo, izinga lokubuyisela lingafikelela ngaphezu kwe-95%;
(2) ukunyibilika kwentsimbi yolwelo ukuba isixa sekhabhoni akwanelanga ukulungelelanisa ixesha lekhabhoni, qala udlale i-slag yesithando somlilo, uze udibanise i-carburizing agent, ngokufudumeza kwentsimbi yolwelo, ukuxhokonxa kwe-electromagnetic okanye ukuxhokonxa okwenziweyo ukunyibilikisa ukufunxwa kwekhabhoni, izinga lokubuyisela. inokuba malunga nama-90, ukuba inkqubo yobushushu obuphantsi be-carburizing, oko kukuthi, intlawulo inyibilika kuphela inxalenye yobushushu bentsimbi enyibilikisiweyo iphantsi, yonke i-agent carburizing kanye yongezwa kwi-iron engamanzi, kwangaxeshanye, icinezelwe kulwelo. intsimbi enentlawulo eqinileyo ukuyigcina kumphezulu wentsimbi engamanzi. Le ndlela inokunyusa i-carburization yentsimbi engamanzi ngaphezu kwe-1.0%.
Ukusetyenziswa ngokufanelekileyo kwe-arhente ye-carburizing kwi-furnace induction
I-1, ukusetyenziswa kwe-5T okanye ngaphezulu kwesithando sombane, izinto eziluhlaza zingatshatanga kwaye zizinzile, sincoma indlela yokongeza i-dispersive. Ngokweemfuno zesiqulatho sekhabhoni, ngokomlinganiselo wezithako, i-arhente ye-carburizing kunye nentlawulo yesinyithi kunye nebhetshi nganye yezinto zokudibanisa iziko kwindawo esezantsi, umaleko wentlawulo yesinyithi umaleko we-agent ye-carburizing, izinga lokufunxa ikhabhoni ukufikelela kwi-90% -95%, i-agent carburizing ekunyibilikeni musa i-slag, kungenjalo kulula ukugqunywa kwi-slag yenkunkuma, echaphazela ukufunxa kwekhabhoni;
2. I-furnace ye-medium frequency induction malunga ne-3T isetyenzisiweyo, kwaye i-raw material iyodwa kwaye izinzile. Sicebisa indlela yokongeza esembindini. Xa isixa esincinci sesinyithi esinyibilikisiweyo sincibilika okanye sishiywe esithandweni, i-carburizing agent yongezwa kumphezulu wentsimbi etyhidiweyo ngexesha elinye, kwaye intlawulo yetsimbi yongezwa ngokukhawuleza. I-agent carburizing ixinzelelwe kwintsimbi etyhidiweyo, ukwenzela ukuba i-carburizing agent idibene ngokupheleleyo nentsimbi etyhidiweyo, kwaye izinga lokufunxa lingaphezulu kwe-90%;
I-3, ukusetyenziswa kweziko lombane elincinci eliphakathi, izinto eziluhlaza kunye nentsimbi yehagu kunye nezinye izinto eziphezulu zekhabhoni, sincoma i-agent carburizing i-fine-tuning. Emva kokunyibilika kwentsimbi / isinyithi esinyibilikisiweyo, lungisa umxholo wekhabhoni, unokongezwa kumphezulu wentsimbi / isinyithi esinyibilikisiweyo, ngokusebenzisa i-eddy yangoku enyakazayo yentsimbi (intsimbi) yamanzi okanye ukuvuselela okwenziweyo ukunyibilika nokufunxa imveliso, izinga lokufunxa ikhabhoni malunga nama-93%.
Indlela ye-carburization yangaphandle yesithando somlilo
1. Tshiza umgubo wegraphite ngaphakathi kwebhegi
I-graphite powder njenge-carburizing agent, ivuthela kwisixa se-40kg / t, inokulindeleka ukuba yenze umxholo wekhabhoni we-iron engamanzi ukusuka kwi-2% ukuya kwi-3%. Njengoko umxholo wekhabhoni wentsimbi engamanzi ukhula ngokuthe ngcembe, izinga lokusetyenziswa kwekhabhoni lehla. Ubushushu bentsimbi yolwelo phambi kokuba i-carburization yayiyi-1600 ℃, kwaye iqondo lobushushu eliphakathi emva kwe-carburization laliyi-1299 ℃. I-graphite powder carburization, ngokuqhelekileyo isebenzisa i-nitrogen njengomthwali, kodwa kwiimeko zemveliso, umoya ocinezelweyo ulungele ngakumbi, kunye ne-oksijini ekutshatyalalisweni komoya ukuvelisa i-CO, ubushushu bokusabela kweekhemikhali bunokubuyisela inxalenye yokwehla kobushushu, kunye nomoya wokunciphisa i-CO. inceda ekuphuculeni umphumo we-carburization.
2, ukusetyenziswa kwe-iron carburizing agent
I-100-300 ye-graphite powder carburizing agent inokufakwa kwipakethe, okanye isuka kwi-outlet yentsimbi kunye nokugeleza, emva kokuba intsimbi iphuma kulwelo ishukunyiswe ngokupheleleyo, kangangoko kunokwenzeka ukunyibilikisa ukufunxa kwekhabhoni, izinga lokubuyisela ikharbhon limalunga 50%.
Ekusetyenzisweni kwe-arhente ye-carburizing kufuneka ihlawule ingqalelo ingxaki
Ukuba ixesha lokongeza i-agent ye-carburizing lisekuqaleni kakhulu, kulula ukuyinamathisela kufuphi nomzantsi wesithando somlilo, kwaye i-agent ye-carburizing edityaniswe eludongeni lwesithando somlilo akukho lula ukuxutywa kwintsimbi engamanzi. Ngokuchasene noko, ukongeza ixesha emva kwexesha, kuya kuphulukana nethuba lokongeza ikhabhoni, okukhokelela ekunyibilikeni, ixesha lokufudumeza licotha. Oku akulibazisi nje ixesha lokuhlalutya ukubunjwa kweekhemikhali kunye nohlengahlengiso, kodwa kunomngcipheko wokwenzakala okubangelwa kukufudumala okugqithisileyo. Ke ngoko, i-arhente ye-carburizing okanye kwinkqubo yokongeza intlawulo yentsimbi bit by bit ukujoyina.
Njengakwimeko yesixa esikhulu sokongeza, sinokudityaniswa kunye neziko lokungeniswa xa intsimbi yolwelo isebenza ngokugqithisileyo idityaniswe noqwalaselo, ukuqinisekisa ukuba i-carburizer ngexesha lokufunxa intsimbi engamanzi eyi-10Min, kwelinye icala ngokuvuselela i-electromagnetic. isiphumo sokufunxa i-carburizer ngokupheleleyo, ukuqinisekisa isiphumo sokufunxa. Ngakolunye uhlangothi, inani le-nitrogen eliziswe kwi-carburizer lingancitshiswa.
Musa ukongeza kanye, yongeza kwiibhetshi, kwaye ekugqibeleni unyibilike inxalenye, ubeke inxalenye yentsimbi eshushu (malunga nepakethi) kwisikhwama, uze ubuyele kwi-carburizer yesithando somlilo 1-2 amaxesha, kwaye emva koko slag, yongeza i-alloy.
Kukho iinkalo ezininzi ekufuneka ziqwalaselwe:
1. I-agent carburizing inzima ukuyifunxa (ngaphandle kokubala);
2, carburizing agent ash distribution ash is not uniform;
3. Ukujoyina emva kwexesha;
4. Indlela yokudibanisa ayichanekanga, kwaye ukudibanisa okucwangcisiweyo kuyamkelwa. Gwema isibuko sentsimbi engamanzi kunye ne-slag eninzi xa yongezwa;
5. Zama ukungasebenzisi izinto ezirusayo kakhulu.
Iimpawu zomgangatho ophezulu we-agent carburizing
I-1, ubungakanani bamasuntswana buphakathi, i-porosity inkulu, isantya sokufunxa sikhawuleza.
2. Ukwakheka kweekhemikhali ezicocekileyo, ikhabhoni ephezulu, isulfure ephantsi, izinto ezincinci eziyingozi, izinga lokufunxa okuphezulu.
I-3, imveliso yegrafu yekristale yesakhiwo ilungile, iphucula isakhono sokuqala solwelo lwentsimbi. Ukwandisa inani le-nodular iron nodules kwi-inoculation, kwaye ukwandise i-nucleus yegraphite kwisithando sombane sombane. Cokisa kunye nokusasazwa kwe-inki yefosili kwi-castings.
4. Ukusebenza okugqwesileyo kunye nokuzinza.
Ukukhethwa kwearhente efanelekileyo yokunyibilikisa i-carburizing kunceda ukunciphisa iindleko zemveliso yokunyibilikisa, ukuphucula umgangatho wokunyibilikisa isinyithi kunye nokuphosa, ukuze isityalo sokunyibilikisa, ukuphosa.
Ixesha lokuposa: Dec-02-2022