Kukho iintlobo ngeentlobointsimbi ephantsi kwekhabhoniiinxalenye iinjongo mechanical, eyona nkqubo yesicelo ifuna iimpawu eziphezulu mechanical.Nangona kunjalo, kwimveliso eyiyo, sihlala sifumanisa ukuba ubukho bentsimbi ephantsi yekhabhoni edibeneyo isakhiwo emva kokulungiswa kwe-thermal.Okufana nesakhiwo esibhandiweyo yintsimbi kwintlangano enesiphene, xa isakhiwo sebhendi enzulu, iipropati zomatshini zentsimbi ecacileyo ye-anisotropy, umbhobho wentsimbi ukunciphisa icandelo elinqamlezayo liyancipha ngakumbi ngokuthe nkqo kwaye lithe tye impembelelo yempembelelo yamandla malunga nokwahlukana kabini, iplastiki okanye intsimbi. ukuqina akuhlangabezani neemfuno zobugcisa zomgangatho.

Kumxholo wekhabhoni we-0.10% ~ 0.35% ye-carbon steel smelting ephantsi egalela emva kokuba uninzi ludlule kwi-deformation yeplastiki (i-rolling, i-forging, ukwanda kwe-thermal), ngaphambi kokuba ibe yiprofayili.Noko ke, emva processing amacandelo entsimbi ephantsi carbon lula ukufumana kunye ulwalathiso deformation, ukwenza pearlite kunye ferrite imizila yokusasazwa zonal, oko kukuthi ukwakheka isakhiwo banded.Izizathu zokuyilwa kweentsimbi eziphantsi kwekhabhoni yesakhiwo ziyahluka, zishwankathelwe malunga neentlobo ezimbini zezizathu:

(1) okubangelwa ulwahlulo lwesakhiwo sebhendi, oko kukuthi, xa ukufakwa kweengxenye zetsimbi ephantsi kwekhabhoni kuqulethe inani elithile lexesha lokudityaniswa kwe-rolling kunye ne-rolling direction away streamline distribution.Xa ipholile kwiindawo zentsimbi ephantsi-khabhoni Ar3 ngezantsi, ezi ukungcola baba eutectoid ferrite core nucleation ukwenza eutectoid ferrite inclusions ngeenxa zonke kwisizukulwana sokuqala ifomu yonikezelo zonal, ke intsalela austenite umzimba ibe pearlite, kujongwe phantsi kwemakroskopu kubushushu begumbi, ferrite imhlophe. , i-grayish emnyama kunye ne-pearlite, ephumela kwimigca emhlophe nemnyama, eyi-low-carbon steel strip tissue deformation.

(2) isakhiwo band ngobushushu processing thermal okubangelwa engafanelekanga, ukuba ukusetyenzwa thermal kwiindawo ezisezantsi carbon steel ukumisa ubushushu bokuyila ngexesha zone yesigaba ezibini (phakathi A1 kunye A3), ferrite ecaleni flow ulwalathiso intsimbi ukusuka austenite zonal precipitation, ukubola kwe austenite ayikanqunyulwa ibe strip, xa ipholile ukuya A1, i strip austenite ibe pearlite band.