Drop Forging Process: Drop forging is carried out by using drop hammers. They are board or gravity hammer, air lift hammer and power drop hammer. Anvil of drop forging hammer is attached to the frame to permit accurate alignment of upper and lower dies. The ram is fastened to the lower end of vertical hard wood board.
[1] The upper die and ram are raised by friction rolls gripping the board.
[2] After releasing the board, the ram falls under gravity to produce the blow energy.
[3] The hammer can strike between 60-150 blows per minute depending on size and capacity.
[4] The board hammer is an energy restricted machine. The blow energy supplied equals the potential energy due to the weight and the height of the fall.
[5] This energy will be delivered to the metal work-piece to produce plastic deformation.