Kinachojulikana kama kushindwa kwa kufa kinamaanisha kufa kwa sababu haiwezi kurekebishwa ili kurejesha kazi yake ya uharibifu, ambayo ni, iliyosababishwa na uharibifu au chakavu cha kufa kawaida. Because plays a forming die chamber of the function of the forgings, it directly in contact with the hot billet, bear the function of impulse type heat load, and forging equipment applied under high energy impact load and blank metal flow scouring and embellish the role of the slip agent and other environmental media, in the mold of metallurgy and processing quality specification and normal operating conditions, forging die of damaged or destroyed Most occurred in the die chamber, therefore, the failure of forging die is Hasa faili ya chumba cha ukungu sasa haiwezi kukarabati njia ya kurejesha utengenezaji wa uwezo wa kusamehewa waliohitimu.