Cov cuab yeej thiab cov cuab yeej siv rau kev forging dawb yog qhov yooj yim, universal thiab tus nqi qis. Piv nrog rau casting dawb paug, dawb forging tshem tawm cov shrinkage kab noj hniav, shrinkage porosity, porosity thiab lwm yam tsis xws luag, thiaj li hais tias cov dawb paug muaj ntau dua mechanical zog. Forgings yog qhov yooj yim hauv cov duab thiab hloov pauv hauv ...
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