Enyanisweni, iibhilidi zetsimbi ezivela kwintsimbi yensimbi ziyimveliso egqityiweyo kuphela, kwaye kufuneka igqitywe kwi-rolling mill ngaphambi kokuba ibe yimveliso yensimbi efanelekileyo.Ukuqengqeleka okushushu kunye nokuqengqeleka okubandayo ziinkqubo ezimbini eziqhelekileyo zokuqengqeleka.Ukuqengqeleka kwentsimbi kushushu kakhulu, kwaye i-cold-rolled isetyenziselwa ukuvelisa amacandelo amancinci kunye namaphepha.Ezi zilandelayo ziintsimbi eziqhelekileyo ezipholileyo kunye ne-hot-rolled: Intambo: 5.5-40 mm ububanzi, i-coiled, yonke i-hot-rolled.Emva komzobo obandayo, yeyezinto ezizotyiweyo ezibandayo.Intsimbi ejikelezayo: Ukongeza kwizinto ezikhanyayo kunye nemilinganiselo echanekileyo, ngokuqhelekileyo ishushu ishushu, kwaye kukho nezinto zokubumba (impawu zokubumba phezu komhlaba).Intsimbi ye-Strip: zombini i-hot-rolled and cold-rolled, kunye ne-cold-rolled materials are generally thin.Ipleyiti yentsimbi: iipleyiti eziqengqelekayo ezibandayo ngokuqhelekileyo zibhityile, ezifana neepleyiti zemoto;kukho iipleyiti ezininzi ezishushu ezishushu eziphakathi kunye nezinzima, ezinobunzima obufanayo kunye ne-cold-rolled, kwaye ukubonakala kwazo kuyahluka ngokucacileyo.Angle steel: zonke zishushu ziqengqeleke.Umbhobho wentsimbi: Zombini ezishushu eziqengqelekayo nezitsalwa ngokubanda ziyafumaneka.Intsimbi yomjelo kunye ne-H-beam: i-hot rolled.Ukuqinisa ibha: izinto ezishushu eziqengqelekayo.
Zomibini i-hot rolling kunye ne-cold rolling ziyinkqubo yokwenza iiplate zetsimbi okanye iiprofayili, kwaye zinempembelelo enkulu kwisakhiwo kunye neempawu zensimbi.I-rolling yensimbi isekelwe ikakhulu kwi-hot rolling, kunye ne-cold rolling ngokuqhelekileyo isetyenziselwa ukuveliswa kwamacandelo amancinci amancinci kunye namaphepha anemilinganiselo echanekileyo.Ubushushu bokupheliswa kokuqengqeleka okushushu ngokuqhelekileyo ngama-800 ukuya kuma-900 ° C, kwaye ke bupholiswa ngokubanzi emoyeni, ngoko ke imeko eshushu yokuqengqeleka ilingana nonyango oluqhelekileyo.Uninzi lweentsimbi ziqengqeleka yindlela yokuqengqeleka eshushu.Ngenxa yobushushu obuphezulu, intsimbi ehanjiswa kwindawo eshushu ifakwe kwisikali se-iron oxide esikalini, ngoko inokumelana nokugqwala okuthile kwaye inokugcinwa kwindawo evulekileyo.Nangona kunjalo, le maleko yesikali se-iron oxide yenza umphezulu wentsimbi eshushu-eqengqelekayo iberhabaxa kwaye nobungakanani buguquguquka kakhulu.Ke ngoko, intsimbi enomgangatho ogudileyo, ubungakanani obuchanekileyo kunye neepropathi ezilungileyo zoomatshini ziyafuneka, kwaye iimveliso ezigqityiweyo ezigqityiweyo okanye iimveliso ezigqityiweyo zisetyenziswa njengezinto ezibonakalayo zokuvelisa okubandayo.Izinto eziluncedo: isantya sokwenza ngokukhawuleza, ukukhutshwa okuphezulu, kwaye akukho monakalo kwi-coating, unokwenziwa kwiifom ezahlukeneyo ze-cross-sectional ukuhlangabezana neemfuno zeemeko zokusetyenziswa;ukuqengqeleka okubandayo kunokubangela ukuguqulwa okukhulu kweplastiki yentsimbi, ngaloo ndlela kuphuculwe isivuno sentsimbi.Ukungalungi: 1. Nangona kungekho ukunyanzeliswa kweplastiki eshushu ngexesha lokwenziwa kwenkqubo, kusekho uxinzelelo oluseleyo kwicandelo, eliya kuchaphazela ngokuqinisekileyo iimpawu zokubethelwa kwendawo yonke kunye neendawo zentsimbi;2. Icandelo lensimbi epholileyo ngokuqhelekileyo licandelo elivulekileyo, okwenza icandelo likhululekile.Ukuqina kweTorsional kuphantsi.Iqhelekile kwi-torsion ngexesha lokugoba, kwaye ukugoba kwe-torsional buckling kuyenzeka ukuba kwenzeke ngexesha loxinzelelo, kwaye ukusebenza kwe-torsional kubi;3. Ubunzima bodonga lwentsimbi epholileyo eyenziwe yintsimbi encinci, kwaye ayigxininisi kwiikona apho iiplate zidibene khona, ngoko ziyakwazi ukumelana noxinzelelo lwendawo.Ukukwazi ukugxila kwimithwalo buthathaka.Ukuqengqeleka okubandayo Ukuqengqeleka okubandayo kubhekisa kwindlela yokuqengqeleka yokutshintsha ubume bentsimbi ngokukhupha intsimbi ngoxinzelelo lomqulu kwiqondo lobushushu begumbi.Nangona ukusetyenzwa kwakhona kutshisa i-sheet yentsimbi, kusabizwa ngokuba yi-cold rolling.Ngokukodwa, i-coil yensimbi eshushu-eshushu yokugoqa ebandayo isetyenziswe njengento ekrwada, kwaye isikali se-oxide sisuswa ngokucholwa, kwaye emva koko ukucutshungulwa koxinzelelo lwenziwa, kwaye imveliso egqityiweyo iyikhoyili eqiniweyo.Ngokubanzi, intsimbi eqengqelekayo ebandayo enje ngentsimbi ekhandiweyo kunye nepleyiti yentsimbi enombala kufuneka ifakwe i-annealed, ngoko ke iplastikhi kunye nobude nazo zilungile, kwaye zisetyenziswa ngokubanzi kwiimoto, izixhobo zasekhaya, izixhobo kunye namanye amashishini.Umphezulu wephepha elipholileyo linomlinganiselo othile wobushelelezi, kwaye isandla sivakalelwa ngakumbi, ngokukodwa ngenxa yokukhetha.Ukugqitywa komphezulu wephepha elishushu ngokuqhelekileyo alihambisani neemfuno, ngoko ke intsimbi eshushu-eshushu ifuna ukubanda.Olona cwecwe lwentsimbi oluthambileyo olushushu oluqengqelekayo luyi-1.0mm, kwaye umcu wentsimbi opholileyo unokufikelela kwi-0.1mm.Ukuqengqeleka okushushu kuqengqeleka ngaphezulu kweqondo lobushushu becrystallization, kwaye ukuqengqeleka okubandayo kuqengqeleka ngaphantsi kweqondo lobushushu becrystallization.Ukutshintshwa kobume bentsimbi ngokuqengqeleka okubandayo kungokwakhe ukuguqulwa okubandayo okuqhubekayo, kwaye ukuqina komsebenzi obandayo okubangelwa yile nkqubo kwandisa amandla, ukuqina kunye nokuqina kunye nesalathiso seplastiki yekhoyili eqiniweyo eqengqelekayo.Ukusetyenziswa kokugqibela, ukuqengqeleka okubandayo kuwohloka iipropathi zesitampu, kwaye imveliso ifanelekile kwiindawo ezilula zokuguqula.Izibonelelo: Iyakwazi ukutshabalalisa isakhiwo sokuphosa i-ingot, ihlambulule ingqolowa yentsimbi, kwaye isuse iziphene ze-microstructure, ukwenzela ukuba isakhiwo sensimbi sinobunzima kwaye iimpawu zomatshini ziphuculwe.Olu phuculo lubonakaliswe ngokukodwa kwi-rolling direction, ukwenzela ukuba insimbi ingabi ngumzimba we-isotropic kwinqanaba elithile;amaqamza, ukuqhekeka kunye ne-porosity eyenziwe ngexesha lokuphosa nalo linokuthi lidityaniswe phantsi kwesenzo sobushushu obuphezulu kunye noxinzelelo.Ukungalungi: 1. Emva kokutshisa okutshisayo, i-non-metallic inclusions (ikakhulukazi i-sulfides kunye ne-oxides, kunye ne-silicates) ngaphakathi kwentsimbi igxininiswe kumaphepha amancinci, kwaye i-delamination iyenzeka.I-Delamination iwonakalise kakhulu iipropathi eziqinileyo zentsimbi ngobunzima, kwaye kukho amandla okukrazuka kwe-interlaminar njengoko i-weld icutheka.Uxinzelelo lwendawo olubangelwa yi-shrinkage ye-weld luhlala lufikelela amaxesha amaninzi kwinqanaba lesivuno, elikhulu kakhulu kunobunzima obubangelwa ngumthwalo;2. Uxinzelelo olushiyekileyo olubangelwa kukupholisa okungalinganiyo.Uxinzelelo olushiyekileyo luxinzelelo lwe-self-phase equilibrium ngaphandle kwamandla angaphandle.I-Hot-rolled section steel yamacandelo ahlukeneyo inoxinzelelo olunjalo oluhlala.Ngokuqhelekileyo, ubukhulu becala ubukhulu becandelo lentsimbi yecandelo, lukhulu loxinzelelo olushiyekileyo.Nangona uxinzelelo olushiyekileyo luzilungelelanisa, lusenempembelelo ethile ekusebenzeni kwelungu lentsimbi phantsi kwesenzo samandla angaphandle.Ngokomzekelo, inokuba nemiphumo emibi kwi-deformation, ukuzinza, kunye nokumelana nokukhathala.