Iipropati zempembelelo yeqondo lokushisa kwi-Coiling kwi-strip

Emva kokugqiba ukuqengqeleka komcu, ukupholisa amanzi ngaphakathi komgangatho wokutshintsha ubungakanani bobushushu be-coilingα icinezelwe kakhulu.Phantsi kwe-eutectoid ferrite nucleation kunye nokukhula kwiqondo lobushushu elicothayo, emva kokugqitywa kweemeko zokupholisa ezicothayo kakhulu kunokuqwalaselwa kufana nenkqubo yenguqu ye-isothermal, ke ngoko, okuchaphazela ubushushu bokugquma kwi-microstructure kunye neepropathi zentsimbi eziqondwa njengempembelelo yotshintsho kwiqondo lobushushu. .Ngoko impembelelo yokushisa kwe-coiling kwi-microstructure kunye neempawu zentsimbi zibaluleke kakhulu.Xa iqondo lobushushu lokubhijela liphezulu, iyunifomu yeenkozo ze-ferrite, ephantsi kakhulu ngenxa yotshintsho kwiqondo lokupholisa okukhulu.α, amanqaku amancinci e-nucleation, ngokukodwa kwimida yeenkozo zaseprayimariγ iinkozo, isantya sokukhula kune-ferrite ngokukhawuleza ngenxa.Xa ubushushu be-coiling buphantsi,α Yandisa inani le-nucleation, isantya sokukhula siyacotha i-ferrite, ubungakanani beenkozo ze-ferrite buba buncinci, kodwa buthanda ukusabalalisa iperilite entle.Ngokuncipha kweqondo lobushushu lokucolwa kweenkozo ze-ferrite, inani le-acicular ferrite liye landa ngokuthe ngcembe, ukwandisa umxholo we-pearlite, isithuba se-pearlite lamellar sincitshiswa ngokuthe ngcembe.Ke, ngeqondo lobushushu elisezantsi le-coiling, isalathiso samandla siya kwanda, ngelixa isalathiso seplastikhi sinciphile kancinci, nto leyo yi-carbon kunye ne-ferritic alloy element ngenxaγ-α inguqu yesigaba kumaqondo obushushu asezantsi afunyenwe xa umxholo wongxamiseko oluphezulu.Xa isiphelo sobushushu obubandayo sisezantsi kakhulu, umlinganiselo wesivuno uphucule ukumila kuyingozi, kuba baninzi kakhulu kwisigaba sesizukulwana sesibini, ngakumbi isalathiso seplastiki yentsimbi erhabaxa.

Impembelelo yokulawula ukushisa kwe-coiling kwi-microstructure

Izixhobo zoomatshini be-Metallurgical, ubushushu be-coiling kunye nokugqiba ubushushu bokuqengqeleka, njengempembelelo ye-microstructure enkulu yentsimbi, yenye yezinto ezimiselweyo zokugqitywa kwentsimbi, iipropati zomatshini zeparameters zenkqubo ebalulekileyo.Ukulawulwa kobushushu bokugquma ngokubalulekileyo kukuvelisa i-hot-rolled strip iron rolling elawulwayo ukupholisa, kunye nokupholisa okulawulwayo emva kokuqengqeleka izinto eziphambili ezichaphazela umgangatho weemveliso kukuqala kokupholisa (ukupholisa ubushushu besiqalo ngokusisiseko kukugqiba ubushushu) kunye nobushushu bokuphela, ukupholisa. isantya kunye nokufana kokupholisa.Ubushushu be-coiling kufuneka bube ngaphantsi kwama-670℃, ngokubanzi 600 ~ 650℃.Ngaphakathi kolu luhlu lwamaqondo obushushu, oomatshini besinyithi bensimbi begqityiwe, banokucotha ukupholisa kunye nokupholisa okucothayo ukunciphisa uxinzelelo lwangaphakathi lomcu kukwaluncedo.Iqondo lobushushu le-coiling liphezulu kakhulu, liya kubangela ukubuyiswa kwakhona kunye nokucotha okucothayo emva kokuba ukujiyile kuvelise ukuqokelelwa kwezicubu kunye ne-carbides yengqolowa erhabaxa, okukhokelela ekuwohlokeni kweempawu zoomatshini kunye nokuveliswa kolusu lwentsimbi elukhuni, ngoko kunzima ukuchola.Ukuba ubushushu be-coiling buphantsi kakhulu, ngelixa ukujija kunzima, kunye nobukho boxinzelelo olushiyekileyo, ukukhulula lula, kuchaphazela umgangatho womgca ogqityiweyo;esinye isandla, iqondo lobushushu coiling akwanelanga ukwenza supersaturated carbonitrides precipitation, echaphazela ukusebenza rolling.Ngoko ke, ukulawulwa kweqondo lokushisa kwe-coiling yi-microstructure yangaphakathi ngaphakathi kwendawo echazwe yintsimbi, enye imilinganiselo yokulawula engundoqo ye-Metallurgical Machinery strip quality.Iindidi ezahlukeneyo kunye neenkcukacha zomcu, ubushushu bawo bokugqiba ukuqengqeleka kwawo bungama-800℃, ubushushu bokugqiba intsimbi ye-silicon buqhele ukuba ngama-980℃, kanti kwi-roller engaphezulu kwe-100 m ubude bentsimbi yokukhupha ixesha elisebenzayo kuphela kwi-5 ukuya kwi-158.Kuba ngexesha elifutshane kangaka ukunciphisa iqondo lobushushu strip 200 ~ 350℃, ubushushu radiation yedwa rollers intsimbi imveliso kunye nobushushu roller ukuya indlela yokupholisa yendalo akunakwenzeka, rollers imveliso kufuneka ibe kakhulu Ukubeka umgama omde indlela yokupholisa amanzi ngendlela esebenzayo umcu, ukupholisa ngenkani kumphezulu wamanzi, kunye nokulawula ngokuchanekileyo i umthamo wamanzi ukuhlangabezana neemfuno zobushushu bokubhijela.Umiliselo oluthe ngqo lolawulo lobushushu bokubhijela lusekelwe koomatshini besinyithi ngokweempawu ezahlukeneyo zomcu (izinto, ubungakanani), kunye namazwe ahlukeneyo akwindawo yomcu omnye (ubushushu, isantya), ukuhamba kubude bomaleko wokupholisa (okt, ukupholisa okuvulekileyo). Inani leheda) yohlengahlengiso oluguquguqukayo lobude bubonke bemigca ukuya kwindawo ethile ukusuka kwiqondo eliphezulu lokuchaneka kweQian lokugqibela lobushushu lokuqengqeleka ukuya kumaqondo obushushu okupholisa ngokukhawuleza okufunekayo.