Pneumatic forging hammer is the main equipment of the mechanical free forging. A large equipment drivened by power motor. To obtain the required forgings, metal blank can be produced deform plastically for the impact force or pressure when put the heated metal between the iron.

For the features of simple structure and flexible operation, mechanical forging is applied in a variety of free forging such as extension, upsetting, punching, shearing, forging welding, torsion, bending and so on. It can be applied in pre-forging processes of open die forging hammer, ironwork, knives, medical equipment, automobiles, motorcycles, hardware tools, agricultural machinery, steel pipe and other industries.


Why choose pneumatic forging power hammer:

To obtain the plastic deformation of the required size, shape and mechanical properties of metal component, mechanical equipment is often used for adding pressure of heated metal blank in the processing of mechanical manufacturing. The mechanical properties of forgings are higher than castings after this process.Free forging is divided into manual free forging and mechanical free forging, for the lower efficiency and higher labor intensity of manual forging, just used in the simple repair and small batch forging production. For the needs of modern industry, mechanical free forging has become the main method, especially play a key role in the heavy machinery manufacturing.

  • Drawing out: Also called the extension, it is a forging process always used in forging rod, shaft parts, make the metal blank cross-sectional area decreased, the length increased.
  •  Upsetting: Upsetting is mainly applied for the production of forging gear blank, round cake forging, make the metal blank height reduced, the cross-sectional area increased.
  •  Punching: Punching is a forging process used in the metal blank punched out of a through hole or a blind hole.
  •  Bending: Bending is used for production of the required shape by a certain tool and mould.
  •  Cutting: Cutting is a forging process of the metal blank cut into a few part, or a portion is cut off from the outside of the blank, or a portion thereof is cut away from the inside.
  •  Shifting: Shifting is a forging process, always used in forging crankshaft parts. It refers to the part of the blank relative to another part of the parallel shift of some distance, but still maintain the axis parallel.
  •  Forging: Forging is a process to make the two parts combined in solid-state by hammer hit quickly after heated of metal. The methods of forging include overlap, docking, bite and so on. The Seam strength can be connected 70% -80% compared with the jointed material after forging.
  •  Torsion: Torsion is a forging step which a portion of the blank is rotated by an angle with respect to the other portion around its axis. It is used for forging multiple crankshaft and correction of some forgings. If torsion angle is small of small metal pieces, hammering used.

Industry used of pneumatic forging hammer:

Different of the weight of forging hammer, different application

HM-1500kg, 1750kg: Apply in the free forging of various shaping parts in forging workshop, including extension, upsetting, punching, hot cutting, forging, twisting and bending. Variety of die forging can be achieved when open pad mold used.

HM-200kg: Widely used in steel pipe plant, brass plant, automobile, motorcycle and other manufacturing industries.

HM-40kg: Widely used in hardware and tools, medical equipment, gold and silver processing, manufacturing, agricultural machinery, brass plant and other industries. Especially for rural enterprises and specialized households forge sickle, hoes and other small farm tools.

The basic structure of forging air hammer:

Forging air hammer is main formed by the machine body, transmission, compression cylinder and working cylinder, compression piston, dropping part, valve and anvil parts and other components. Compressed air is the driving force. Also called by forging press machine, To meet the needs of safety production, the percussion intensity and vibration frequency can be controlled by adjust the air pressure.

Machine body and anvil are the split structure, including two cylinders: compression cylinder and working cylinder. Compressed air from compression cylinder is transferred into the working cylinder, pushing the piston with hammer up and down movement, hammering achieved and flexible operation.


1, The operator must know the structure and performance of forging air hammer, operating reasonably to prevent accidents.
2, Pay attention to the work duration, regular maintenance, if spare parts damaged, must be replaced in time to prevent more parts damaged.
3, Noise appeared when machine is working, stop for inspection and repair immediately.
4, Pay attention to the oil situation of oil cup, whether the lubricants meet specifications, such as the ignition residue and concentration.
5, Pay attention to lubrication of the various parts regularly.
6, Care about the distance of anvil surface and the hammer guide, the distance of down anvil surface and the ground, all distance must be maintained at a specified distance, checked whether the distance change or not, so as not to break the machine.
7, Check the spherical ball of the buffer institutions is complete or not regularly, in case work cylinder cover damaged by hammer.
8, To avoid freezing, the oil cup should be wrapped in winter, if not, lubrication is blocked.
9, Check the flexibility of control lever before driving.
10, To maintain the effectiveness of forging air hammer, fill gas path must be clear in the regular maintenance.
11, Don’t forging when the metal in the situation of cold or insufficient hot.
12, The time of hammer on the top is less than one minute, so as not to hammer fevered, waste of capacity, affecting the normal operation of the machine and durability.
13, Operator must have a wealth of experience to manipulate the forging air hammer, especially the single blew, more skill needed.
14, When stop working, operator must cut off the power.