Zomibini i-hot rolling kunye ne-cold rolling ziyi-steel plate okanye iinkqubo zokwenza iprofayili, zinempembelelo enkulu kwisakhiwo kunye neempawu zentsimbi.

Ukuqengqeleka kwentsimbi ubukhulu becala kukuqengqeleka okushushu, ukuqengqeleka okubandayo kudla ngokusetyenziswa kuphela ukuvelisa intsimbi encinci kunye nentsimbi yeshiti kunye nezinye intsimbi echanekileyo.

Ukuqengqeleka kwentsimbi okuqhelekileyo okubandayo kunye nokushushu:

Ucingo: 5.5-40 mm ububanzi, iikhoyili, zonke zishushu ziqengqiwe.Emva komzobo obandayo, yeyezinto zomzobo ezibandayo.

Intsimbi ejikelezayo: Ukongeza kokuchaneka kobukhulu bezinto ezikhanyayo ngokuqhelekileyo zishushu ziqengqeleke, kodwa ziphinde zenziwe (imizila yobuso bokwenza).

Strip steel: Kushushu kuqengqeleka kubanda kuqengqeleka, kubanda kuqengqeleke kubhityile.

Ipleyiti yentsimbi: ipleyiti eqengqelekayo ebandayo ibhityile ngokubanzi, njengepleyiti yemoto;Ipleyiti eshinyeneyo eshushu eqengqelekayo ngakumbi, kunye nokuqengqeleka okubandayo okufanayo, inkangeleko yahlukile.

Angle steel: zonke zishushu ziqengqeleke.

Ityhubhu yentsimbi: i-welded eshushu isongiwe kwaye ibandayo izotyiwe.

Ijelo kunye ne-H beam: ishushu iqengqeleke.

Ibha yentsimbi: imathiriyeli eshushu esongiwe.

Ishushu esongwayo

Ngokwenkcazo, i-ingot yensimbi okanye i-billet inzima ukukhubaza kunye nokusebenza kwiqondo lokushisa.Ifudumeza ngokubanzi ukuya kwi-1100 ~ 1250℃ ukuze iqengqeleke.Le nkqubo yokuqengqeleka ibizwa ngokuba yi-hot rolling.

Ubushushu bokupheliswa kokuqengqeleka okushushu ngokuqhelekileyo yi-800 ~ 900℃, kwaye ke bupholiswa ngokubanzi emoyeni, ngoko ke imeko eshushu yokuqengqeleka ilingana nonyango oluqhelekileyo.

Uninzi lwentsimbi luqengqeleka ngokuqengqeleka okushushu.Intsimbi eshushu egobileyo, ngenxa yobushushu obuphezulu, umphezulu wokubunjwa kwephepha le-oxide sheet, ngaloo ndlela inokumelana nokugqwala okuthile, kunokugcinwa kwindawo evulekileyo.

Nangona kunjalo, lo maleko wentsimbi ye-oxide yenza ukuba umphezulu wentsimbi eshushu iqengqeleke ibe rhabaxa kwaye ubungakanani buguquguquke kakhulu, ngoko ke intsimbi enomgangatho ogudileyo, ubungakanani obuchanekileyo kunye neempawu ezilungileyo zoomatshini kufuneka zisetyenziswe njengezinto ezikrwada kwaye emva koko zibandayo.

Izinto eziluncedo:

Ukuqulunqa isantya, isivuno esiphezulu, kwaye singonakalisi isambatho, sinokwenziwa kwiifom ezahlukeneyo zecandelo lomnqamlezo, ukuhlangabezana neemfuno zemiqathango yokusetyenziswa;Ukuqengqeleka okubandayo kunokuvelisa i-deformation enkulu yeplastiki yentsimbi, ngaloo ndlela iphakamisa indawo yokuvelisa intsimbi.

Izinto ezingeloncedo:

1. Nangona kungekho ukunyanzeliswa kweplastiki eshushu kwinkqubo yokuqulunqa, kusekho uxinzelelo olushiyekileyo kwicandelo, eliya kuchaphazela ngokuqinisekileyo iipropati ze-buckling jikelele kunye neendawo zetsimbi;

2. Icandelo elipholileyo liyicandelo elivulekileyo ngokubanzi, elenza ukuqina kwe-torsion yamahhala yecandelo eliphantsi.Kulula ukuyijija xa igobile, kwaye kulula ukugoba kunye nokujijwa xa icinezelwe, kwaye ukuxhathisa kwe-torsion kubi.

3. Ubunzima bodonga lwentsimbi epholileyo epholileyo buncinci, kwaye akukho ukujiya kwikona apho ipleyiti idibanisa, ngoko inamandla abuthathaka okuthwala umthwalo ogxininisiweyo wendawo.

Ukubanda kwaqengqeleka

I-Cold rolling ibhekisela kwindlela yokuguqa yokutshintsha imilo yentsimbi ngokucinezela intsimbi phantsi koxinzelelo lwe-roller kwiqondo lokushisa.Kubizwa ngokuba yi-cold rolling, nangona inkqubo ikwatshisa intsimbi.Ukuchaneka ngakumbi, ukuqengqeleka okubandayo kusebenzisa iikhoyili zentsimbi ezishushu njengezinto ezisetyenziswayo, ezicutshungulwa phantsi koxinzelelo emva kokucholwa kwe-asidi ukususa isikali se-oxide, kwaye iimveliso ezigqityiweyo ziqengqeleka iikhoyili ezinzima.

Ngokuqhelekileyo intsimbi eqengqelekayo ebandayo enje ngegalvanized, ipleyiti yentsimbi enombala kufuneka ifakwe i-annealed, ngoko ke iplastikhi kunye nobude bukwalungile, busetyenziswa ngokubanzi kwimoto, kwizixhobo zasekhaya, kwihardware nakwamanye amashishini.Umphezulu wepleyiti eqengqelekayo unomgangatho othile wokuguda, kwaye isandla sivakala sigudile, ikakhulu ngenxa yokuchola.Ukugqitywa komphezulu wepleyiti eshushu eqengqelekayo ayinakuhlangabezana neemfuno, ngoko ke umtya wentsimbi oshushu kufuneka uqengqiwe, kwaye ubukhulu bentsimbi eshushu eqengqelekayo buqheleke buyi-1.0mm, kwaye umcu wentsimbi obandayo ungafikelela kwi-0.1mm. .Ukuqengqeleka okushushu kuqengqeleka ngaphezulu kweqondo lobushushu becrystallization, ukuqengqeleka okubandayo kuqengqeleka ngaphantsi kweqondo lobushushu becrystallization.

Ukutshintsha kobume bentsimbi okubangelwa kukuqengqeleka okubandayo kukwi-deformation ebandayo eqhubekayo.Ukuqina okubandayo okubangelwa yile nkqubo kwandisa amandla kunye nokuqina kwekhoyili eqinileyo kunye nokunciphisa ukuqina kunye nesalathiso seplastiki.

Ukusetyenziswa kokugqibela, ukuqengqeleka okubandayo kudodobalisa ukusebenza kwesitampu kwaye imveliso ilungele iindawo ezikhubazeke ngokulula.

Izinto eziluncedo:

Iyakwazi ukutshabalalisa isakhiwo sokuphosa i-ingot yensimbi, ukucoca ubungakanani beenkozo zentsimbi, kunye nokuphelisa iziphene ze-microstructure, ukwenzela ukuba isakhiwo sensimbi sihlanganiswe kwaye iimpawu zomatshini ziphuculwe.Olu phuculo lubonakaliswe ngokukodwa kwi-rolling direction, ukwenzela ukuba intsimbi ayisekho isotropic kwinqanaba elithile.Amabhamuza, ukuqhekeka kunye nokukhululeka okwenziwe ngexesha lokuphosa nako kunokudityaniswa phantsi kobushushu obuphezulu kunye noxinzelelo.

Izinto ezingeloncedo:

1. Emva kokutshisa okutshisayo, i-non-metallic inclusions (ikakhulukazi i-sulfides kunye ne-oxides, kunye ne-silicates) kwintsimbi i-laminated kunye ne-layer.I-Delamination iwonakalise kakhulu iipropathi zokunyibilika kwentsimbi ecaleni kwendlela yokuqina kwaye inokubangela ukukrazuka kwe-interlaminar ngexesha le-weld shrinkage.Uxinzelelo lwasekhaya olubangelwa kukucutheka kwe-weld kaninzi amaxesha amaninzi oxinzelelo lwenqaku lesivuno, elikhulu kakhulu kunolo olubangelwa ngumthwalo.

2. Uxinzelelo olushiyekileyo olubangelwa kukupholisa okungalinganiyo.Uxinzelelo olushiyekileyo luxinzelelo lwangaphakathi lwesigaba sokuzimela ngaphandle kwamandla angaphandle.Zonke iintlobo zentsimbi yecandelo elitshisayo zinolu hlobo loxinzelelo olushiyekileyo.Inkulu ubukhulu becandelo lentsimbi yecandelo eliqhelekileyo, ngakumbi uxinzelelo olushiyekileyo.Nangona uxinzelelo oluseleyo luyi-self-phase equilibrium, lunempembelelo ethile ekusebenzeni kwelungu lensimbi phantsi kwamandla angaphandle.Okufana nokuguqulwa, ukuzinza, ukuxhathisa ukukhathala kunye neminye imiba ingaba nemiphumo emibi.

Isiphelo:

Umahluko phakathi kokuqengqeleka okubandayo kunye nokuqengqeleka okushushu ikakhulu kubushushu benkqubo yokuqengqeleka."Ukubanda" kubonisa ukushisa okuqhelekileyo, kwaye "kushushu" kubonisa ukushisa okuphezulu.

Ukusuka kwindawo yokujonga isinyithi, umda phakathi kwe-cold rolling kunye ne-hot rolling kufuneka uhlukaniswe ngokushisa kwe-recrystallization.Oko kukuthi, ukuqengqeleka ngaphantsi kweqondo lobushushu recrystallization kubanda rolling, kwaye rolling ngaphezu ubushushu recrystallization kushushu rolling.Ubushushu bokuhlaziya intsimbi yi-450 ~ 600 ℃.