Enwere ụdị dị iche icheobere carbon ígwèakụkụ n'ibu nzube, n'ezie ngwa usoro chọrọ a elu n'ibu Njirimara.Otú ọ dị, n'ezie mmepụta, anyị na-ahụkarị na ọnụnọ nke ala-carbon ígwè akụkụ banded Ọdịdị mgbe thermal nhazi.Dị otú ahụ dị ka banded Ọdịdị bụ ígwè na a ntụpọ nzukọ, mgbe oké njọ gbalaga Ọdịdị, na n'ibu Njirimara nke ígwè pụtara anisotropy, ígwè anwụrụ iji belata transverse ngalaba shrinkage ọzọ vetikal na kehoraizin mmetụta ume mmetụta ike banyere ihe dị iche okpukpu abụọ, plastic ma ọ bụ ígwè. ike adịghị ezute teknuzu chọrọ nke ọkọlọtọ.

Na ọdịnaya carbon nke 0.10% ~ 0.35% nke obere carbon steel na-agbaze na-agbanye mgbe ọtụtụ ga-aga site na nrụrụ plastik (mpịakọta, ịgbasa, mgbasawanye ọkụ), tupu ị ghọọ profaịlụ.Otú ọ dị, mgbe nhazi nke obere carbon ígwè akụkụ mfe ga-n'akụkụ deformation direction, na-akpụ pearlite na ferrite ụzọ zonal nkesa, ya bụ guzobe nke banded Ọdịdị.Ihe kpatara e ji guzobe akụkụ nke akụkụ eriri carbon dị ala dị iche iche, chịkọtara ụdị ihe abụọ kpatara:

(1) mere site na nkewa nke ìgwè Ọdịdị, ya bụ, mgbe nsonye nke ala-carbon ígwè akụkụ nwere a ụfọdụ ego nke oge mpịakọta inclusions tinyere mpịakọta direction pụọ streamline nkesa.Mgbe mma ka a ala-carbon ígwè akụkụ Ar3 n'okpuru, ndị a adịghị aghọ eutectoid ferrite isi nucleation na-eme eutectoid ferrite inclusions gburugburu ọgbọ mbụ nke zonal nkesa ụdị, mgbe ahụ fọdụrụ austenite n'ime pearlite, hụrụ n'okpuru microscope na ụlọ okpomọkụ, ferrite bụ ọcha. , black grayish na pearlite, na-ebute ọnyá na-acha ọcha na oji, nke bụ nrụrụ anụ ahụ na-agba ígwè na-adịghị ala carbon.

(2) The band Ọdịdị site thermal nhazi okpomọkụ mere na-ekwesịghị ekwesị, na thermal nhazi nke ala carbon ígwè akụkụ kwụsị forging okpomọkụ n'oge nke abụọ-phase mpaghara (n'etiti A1 na A3), ferrite tinyere eruba direction nke metal sitere na mmiri ozuzo austenite, ire ere nke austenite ka ebipụbeghị n'ime warara, mgbe ọ dị mma na A1, warara austenite n'ime eriri pearlite.