Nkọwa dị mkpirikpi:

Mgbe ịgafechara akpụ akpụ, enwere ike imeziwanye usoro igwe na akụrụngwa ya.Original nnukwu kristal na prismatic kristal ọka na-adị gịrịgịrị na evenly obere, wee hazie re-haziri na-eme ka a-liquation, looseness, ikuku afụ na ịtinye slag ga-enwe na usoro ya na-aghọ nso na ike nke na-mma plasticity na n'ibu onwunwe nke metal.Ma n'ibu ihe onwunwe nke nkedo ibe dị njọ karịa ndị ọzọ forging ibe nke otu ihe.E wezụga, forging nwere ike ijide n'aka na continuity nke metal eriri Ọdịdị na na-eriri Ọdịdị na elu udi otu, metal streamline zuru ezu na-ekwe nkwa ogologo ndụ oge na ezi n'ibu ihe onwunwe.Usoro nke iji akpụ akpụ akpụ akpụ.oyi pịa, ọkụ na-ekpo ọkụ bụ enweghị atụ n'ime ka forging ibe.