Ngokuthandwa kwezinto ezilahliweyo kwimveliso yokuphosa, ngakumbi nangakumbi i-carburizing agents zisetyenziswa kwimveliso yentsimbi.Nangona kunjalo, abahlobo abaninzi abaphosayo abaqondi ukusetyenziswa kweearhente ezahlukeneyo ze-carburizing kwiintsimbi ezahlukeneyo.Ngokusekwe ngaphezulu kweminyaka eli-10 yamava kwisikhokelo sosetyenziso lomgca wokuqala wabathengi, isebe letekhnoloji laseYunai lishwankathele izinto ezichaphazela izinga lokufunxa lokuphosa i-carburizer yokuphosa ireferensi yabahlobo.

I. Ukuqulunqwa kwentsimbi engamanzi

Indawo yokunyibilika kwekhabhoni kwi-carburizer iphezulu kakhulu (3 727℃), enyibilikiswa ikakhulu kwintsimbi engamanzi ngeendlela ezimbini zokunyibilika kunye nokusasazwa.Ukunyibilika kwekhabhoni kwintsimbi engamanzi yile: Cmax=1.3+0.25T-0.3Si-0.33P-0.45S+0.028Mn, apho i-T ibubushushu bentsimbi engamanzi (℃).

1. Ukubunjwa kwentsimbi engamanzi.Inokubonwa kwi-equation engentla ukuba i-Si, i-S kunye ne-P inciphisa ukunyibilika kwe-C kunye nesantya sokufunxa i-carburizer, ngelixa uMn echasene.Idatha ibonise ukuba izinga lokufunxa i-carburant liyancipha nge-1 ~ 2 kunye ne-3 ~ 4 ipesenti yeepesenti nganye ye-0.1% yokunyuka kwe-C kunye ne-Si kwi-iron liquid.Izinga lokufunxa linokunyuswa nge-2% ~3% kwi-1% nganye yokwanda kwe-Mn.I-Si inempembelelo enkulu, ilandelwa nguMn, C kunye no-S. Ngoko ke, kwimveliso yangempela, i-C kufuneka yongezwe kuqala kwaye i-Si kufuneka yongezwe kamva.

2. Ubushushu bentsimbi yolwelo.Ubushushu obulinganayo bentsimbi engamanzi (C-Si-O) bunempembelelo enkulu kwisantya sokufunxa.Xa iqondo lobushushu lentsimbi engamanzi liphezulu kunobushushu obulinganayo, i-C isabela nge-O ngokukhethekileyo, kwaye ilahleko ye-C kwintsimbi engamanzi iyanda, kwaye izinga lokufunxa liyancipha.Xa ubushushu bentsimbi yolwelo bungaphantsi kobushushu bokulingana, ukugcwala kweC kuncipha, izinga lokusasazwa kweC liyancipha, kwaye izinga lokufunxa liyancipha.Xa ubushushu bentsimbi yolwelo bulingana nobushushu obulinganayo, izinga lokufunxa lelona liphezulu.Ubushushu obulinganayo bentsimbi engamanzi (C-Si-O) iyahluka ngokuhlukana kweC kunye neSi.Kwimveliso yangempela, i-carburant ye-brand ye-Yu Na ininzi inyibilika kwaye isasazwe kwintsimbi engamanzi engaphantsi kobushushu obulinganayo (1 150 ~ 1 370 ℃).

3. Ukuxutywa kwentsimbi engamanzi kunceda ukunyibilika kunye nokusasazwa kwe-C, kwaye kunciphisa amathuba okutshiswa kwe-agent ye-carburizing edada kumphezulu wentsimbi engamanzi.Ngaphambi kokuba i-agent ye-carburizing inyibilike ngokupheleleyo, ixesha elide lokuxhoma, liphezulu izinga lokufunxa, kodwa ukuvuselela kunempembelelo enkulu kubomi be-lining, kodwa kwandisa ilahleko ye-C kwintsimbi engamanzi.Ixesha lokuvuselela elifanelekileyo kufuneka libe lifutshane kangangoko emva kokuqinisekisa ukuba i-carburizer ichithwe ngokupheleleyo.

4. I-slag scraping ukuba kuyimfuneko yokongeza i-agent ye-carburizing emva kwe-liquefaction ye-iron, i-scum yesithando somlilo kufuneka ihlambuluke ngokusemandleni ukukhusela i-agent ye-carburizing ehlanganiswe kwi-slag.

Eyesibini, i-arhente ye-carburizing

1. I-microstructure eqingqiweyo yeYunai brand carburizer.

Uphononongo lubonisa ukuba ubume bekhabhoni bu-amorphous kwaye buphazamisekile phakathi kwe-amorphous kunye negraphite.Kwiimeko eziqhelekileyo, xa iqondo lobushushu lifikelela kwi-2500℃ kwaye ligcina ixesha elithile, lingakwazi ukugqiba i-graphitization.Ikhabhoni kwiqondo lokushisa eliphezulu okanye kwinkqubo yokufudumala kwesibini, akusiyo ilitye

Iqondo lokuguqulwa kwekhabhoni yegraphite kwikhabhoni yegraphic libizwa ngokuba liqondo lekhabhoni yegraphitization, ekwayenye yezinto zovavanyo lwecarbon microanalysis.Ngokusekwe kwithiyori yesakhiwo sekristale yegraphite, kunokubonwa ukuba ulwakhiwo lwegraphite yiplani yomaleko eyenziwe nguthungelwano lwe-hexagonal carbon athom yenqwelomoya, kwaye iimaleko ziqhagamshelwe omnye komnye nge-van der Waals force, ngaloo ndlela zenza ulwakhiwo lwekristale lwelattice oluya ngokungenammiselo. kwicala lesithathu-dimensional.I-X-ray diffraction isetyenziselwa ukulinganisa umlinganiselo wemilo ye-crystal ye-hexagonal rhoqo emva kwe-graphitization ukuvavanya iqondo le-graphitization.

Isidanga seGraphitization sisalathiso esibalulekileyo searhente ye-carburizing.Iqondo eliphezulu le-graphitization alinakunyusa kuphela izinga lokufunxa kwekhabhoni, kodwa likwaphucula amandla e-nucleation yentsimbi engamanzi ngenxa yesiphumo se-homoheteronuclear yesakhiwo sayo kunye negraphite yentsimbi engamanzi.Owona mahluko mkhulu phakathi kwe-agent ye-carburizing ye-graphitized kunye ne-non-graphitized carburizing agent kukuba i-arhente ye-carburizing ye-graphitized ine-carburizing effect kunye ne-inoculation effect ethile.

2. Ngokweempawu zoomatshini kunye neempawu zemveliso yee-castings ezahlukeneyo, sibonelela nge-agent ekhethekileyo ye-carburizing kuzo zonke iintlobo zokuphosa ngokulawula i-carbon kunye ne-trace element ezahlukeneyo.

Ikhabhoni esisigxina kunye nothuthu lwekhabhoni zizinto ezisebenzayo ze-carburizing agent, iphezulu ngcono;Umlotha yenye isinyithi okanye i-non-metallic oxide, kukungacoceki, kufuneka ibencinci kangangoko.Ubungakanani bekhabhoni esisigxina kunye nothuthu kwi-arhente ye-carburizing zimbini iiparamitha ezibalulekileyo zale nto kwaye, umxholo ophezulu wekhabhoni esisigxina kwi-agent ye-carburizing, ukusebenza kwe-carburizing nako kuphezulu.I-carburizer enomxholo ophezulu we-ash ilula "i-coke" kwaye yenza i-slag layer, ehlukanisa i-carbon particles kwaye ibenze bangabikho, ngaloo ndlela inciphisa izinga le-carbon absorption.Ubuninzi bomlotha obuphezulu bubangela ubuninzi be-iron slag, ukwandisa ukusetyenziswa kwamandla, kunye nokwandisa umsebenzi kwinkqubo yokunyibilikisa.Ulawulo lwezinto ezilandelwayo ezifana nesulfure kunye nenitrogen kwandisa ulawulo lwezinga lokuphosa isiphene.

3. Ukukhethwa kwe-granularity ye-arhente yokungcwaba.

Ubungakanani besuntswana le-carburizer lincinci kwaye indawo yojongano lonxibelelwano lwentsimbi yolwelo inkulu, isantya sokufunxa siya kuba phezulu, kodwa amasuntswana amahle kulula ukuba afakwe i-oxidized, kodwa kulula ukuthatyathwa ngumoya wokuhambisa okanye uthuli. ukuhamba;Ubungakanani besuntswana eliphezulu kufuneka bunyibilike ngokupheleleyo kwintsimbi engamanzi ngexesha lokusebenza.Ukuba i-arhente ye-carburizing yongezwa kunye nentlawulo, ubukhulu be-particle bunokuba bukhulu, kucetyiswa ukuba ube kwi-0.2 ~ 9.5mm;Ukuba yongezwa kwintsimbi engamanzi okanye ngaphambi kokuzoba isinyithi njengohlengahlengiso oluhle, ubungakanani besuntswana bunokuba ngu-0.60 ~ 4.75mm;Ukuba i-carburizing kwiphakheji kwaye isetyenziswe njengonyango lwangaphambili, ubungakanani besuntswana yi-0.20 ~ 0.85mm;Amalungu angaphantsi kwe-0.2mm akufanele asetyenziswe.Ubungakanani bamasuntswana bukwanxulumene nobubanzi besithando somlilo, ububanzi besithando somlilo bukhulu, ubungakanani besuntswana le-carburizer kufuneka libe likhulu, kwaye ngokuchaseneyo.

4. Lawula i-super pass index ye-Yunai brand carburizer.

I-Yu Nai brand carburant ine-pass super eyomeleleyo, indawo ethile yendawo ye-carbon particle inkulu, kukho indawo enkulu yokungena kwintsimbi yolwelo, ukukhawuleza ukuchithwa kunye nokusabalalisa, kunokuphucula izinga lokufunxa kwe-carburant.