Rau ntau qhov chaw hlau, feem ntau muaj ob txoj hauv kev: casting thiab forging. Casting feem ntau haum rau kev tsim cov khoom uas tsis tas yuav tsum muaj qhov siab thiab qhov zoo, tab sis forging yog txawv. Forgings yog zoo dua li castings vim hais tias castings tsis hloov tus thawj koom haum qauv thiab txhua yam khoom ntawm hlau. Nws cov qauv fibrous nce lub zog thiab toughness ntawm cov hlau, uas yog heev haum rau cov khoom uas yooj yim rau hnav. Nyob rau tib lub sijhawm, forgings yog qhov tsim nyog rau kev ua haujlwm xws li vuam, deformation thiab plasticity, thiab tom qab cov kauj ruam no, nws qhov kev ua tau zoo tsis hloov ntau. Yog li ntawd, forgings yog dav siv nyob rau hauv niaj hnub kev lag luam.
Tab sis tam sim no, forgings muaj cov kev xav tau siab heev rau cov khoom siv. Qhov loj dua qhov ntsuas ntawm forgings, qhov siab dua qhov yuav tsum tau ua rau cov khoom siv. Thaum xaiv forgings, koj yuav tsum xyuam xim rau xaiv cov forging nroj tsuag uas muaj zog muaj zog, yog li ntawd koj yuav tau guaranteed.
