Na-ekpo ọkụ akpọrepu bụ ikwu na okwu nke oyi akpọrepu, oyi-akpọrela bụ na recrystallization okpomọkụ n'okpuru Rolling, na-ekpo ọkụ mpịakọta na-rụrụ n'elu recrystallization okpomọkụ Rolling.

Uru:

na-ekpo ọkụ na-ekpo ọkụ nwere ike imebi microstructure nkedo nke ígwè ingot, nhazi nke ọka kristal nke ígwè ahụ, ma kpochapụ ntụpọ nke microstructure, nke mere na nhazi ígwè ahụ na-ejikọta, na-emeziwanye ihe ndị na-emepụta ihe.A na-egosipụta nkwalite a na ntụgharị ntụgharị, nke mere na ígwè ahụ adịkwaghị n'ókè isotropic;ịwụsa nguzobe nke afụ, mgbawa, na ọkpụkpụ ọkpụkpụ, n'okpuru oke okpomọkụ na nrụgide nwekwara ike ịgbakọta ọnụ.

Ihe ọghọm:
1 Mgbe mpịakọta ahụ na-ekpo ọkụ, a na-agbanye ihe ndị na-abụghị metallic n'ime ime nchara (karịsịa sulfides na oxides, yana silicate) n'ime mpempe akwụkwọ, ihe mgbagwoju anya (laminated) pụtara.Nkwadebe nke nchara n'ụzọ ọkpụrụkpụ site na ịrụ ọrụ ndọpụta dara nke ukwuu, ma nwee ike ịpụta na akwa akwa weld shrinkage interlayer.Weld shrinkage butere nsogbu mpaghara na-erute ọtụtụ ugboro n'ụdị ebe mkpụrụ, eriri ahụ dị ukwuu karịa ibu kpatara;
2 Nchegbu fọdụrụnụ kpatara site na oyi na-enweghị isi.The residual stress is stress of internal self-phase equilibrium na enweghị ike mpụga, igwe na-ekpo ọkụ na-ekpo ọkụ nke dị iche iche cross-section nwere nrụgide fọdụrụnụ dị otú ahụ na-emekarị nchara akụkụ akụkụ bụ nke ka ukwuu, nke ka ukwuu na nrụgide fọdụrụnụ.Nchegbu fọdụrụnụ bụ nha nha nke onwe, mana ndị otu nchara na arụ ọrụ ike mpụga ma ọ bụ nwee mmetụta ụfọdụ.Dị ka nrụrụ, nkwụsi ike, mgbochi ike ọgwụgwụ nwere ike dị njọ.
3 Ngwaahịa igwe na-ekpo ọkụ na-ekpo ọkụ, njikwa adịghị mma nke ọkpụrụkpụ na obosara ihu.Anyị maara nke ọma na thermal mgbasawanye na nkwekọrịta, ọbụna ma ọ bụrụ na mmalite nke na-ekpo ọkụ-akpọrepu si bụ ọkọlọtọ ogologo ogologo, ọkpụrụkpụ, ma ọ bụ a ga-enwe ụfọdụ ọjọọ ikpeazụ mgbe obi jụrụ, nke a ọjọọ dị iche iche onu obosara wider na-amụba ọkpụrụkpụ nke arụmọrụ nke ọzọ doro anya.Ya mere maka nnukwu ígwè maka obosara nchara nchara, ọkpụrụkpụ, ogologo, akụkụ, na sideline ọ dịghị iwu chọrọ kpọmkwem.Igwe ọkụ na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ n'ozuzu, obere na-ajụ ọkụ ọkụ ọkụ ọkpọkọ, nnukwu nrụgide ọkpọkọ ọkpọkọ, ígwè ọkpọkọ, igwe anaghị agba nchara, mmanụ cracking ọkpọkọ, geological ígwè ọkpọkọ na ndị ọzọ ígwè ọkpọkọ.