Kunezinhlobonhlobo zeinsimbi enekhabhoni ephansiizingxenye izinjongo mechanical, inqubo langempela isicelo kudinga izakhiwo mechanical eliphezulu.Kodwa-ke, ekukhiqizeni kwangempela, sivame ukuthola ukuthi ukutholakala kwezingxenye zensimbi ephansi ene-carbon ehlanganisiwe isakhiwo ngemva kokucubungula okushisayo.Njengesakhiwo esinebhande siyinsimbi enhlanganweni enesici, lapho isakhiwo sebhendi esibucayi, izici zomshini zensimbi ezibonakala njenge-anisotropy, ipayipi lensimbi lokunciphisa ingxenye eguquguqukayo iyancipha amandla omthelela wamandla aqonde ngqo futhi ovundlile mayelana nomehluko ophindwe kabili, ipulasitiki noma insimbi. ukuqina akuhlangabezani nezidingo zobuchwepheshe zezinga.

Kokuqukethwe kwekhabhoni ka-0.10% ~ 0.35% we-carbon steel smelting ephansi ethela ngemva kokuba iningi lidlule ekugugelweni kwepulasitiki (ukugingqa, ukubumba, ukunwetshwa okushisayo), ngaphambi kokuba amaphrofayili.Nokho, ngemva ukucutshungulwa low carbon steel izingxenye lula ukuze uthole kanye isiqondiso deformation, ukwakha pearlite futhi ferrite imizila ukusatshalaliswa zonal, okungukuthi ukwakheka isakhiwo banded.Izizathu zokwakhiwa kwesakhiwo esinebhande lensimbi enekhabhoni ephansi ziyehluka, ezifingqiwe cishe izinhlobo ezimbili zezizathu:

(1) okubangelwa ukuhlukaniswa kwesakhiwo sebhendi, okungukuthi, lapho ukufakwa kwezingxenye zensimbi ezinekhabhoni ephansi kuqukethe inani elithile lesikhathi esifakwayo esiginqikayo eduze kokuqondisa okuginqikayo kude nokusabalalisa.Lapho ipholile ezingxenyeni zensimbi ezinekhabhoni ephansi i-Ar3 ngezansi, lokhu kungcola kwaba yi-eutectoid ferrite core nucleation yenza i-eutectoid ferrite inclusions ezungeze isizukulwane sokuqala sefomu lokusabalalisa izindawo, khona-ke umzimba osele we-austenite ube yi-pearlite, ebonwa ngaphansi kwe-microscope ekamelweni lokushisa, i-ferrite imhlophe. , okumpunga okumnyama kanye ne-pearlite, okuholela emigqeni emhlophe nemnyama, okuwukuwohloka kwezicubu ze-carbon steel strip.

(2) Isakhiwo sebhendi ngokushisa okushisayo okubangelwa ukungafaneleki, ukuthi ukucutshungulwa okushisayo kwezingxenye eziphansi zensimbi ye-carbon ukuyeka izinga lokushisa ngesikhathi sendawo yezigaba ezimbili (phakathi kwe-A1 ne-A3), i-ferrite eduze kwendlela yokugeleza insimbi kusukela kwezulu le-austenite zonal, ukubola kwe-austenite ayikanqunywa ibe yi-strip, lapho ipholiswe ku-A1, i-strip austenite ibe yibhande le-pearlite.