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Anyang Forging Press Since 1956

China National Forging Hammer Standard Drafter

 pneumatic forging hammer

Pneumatic forging hammer introduction:

Anyang pneumatic forging hammer from from 150kg to 2000kg are widely used in the industrial open die forging.
Pneumatic forging hammer is widely used for general Forging works, such as drawing-out, upsetting, punching, chiseling, forging welding, bending and twisting. It is also used for forging in bolster dies. 

Anyang hammers are self contained pneumatic power hammers.  The design is based on the time proved designs of the old European hammers many which are still in use today.  With a self contained power hammer, you require no external air supply or high pressure hoses. 

You can forge heavy stock and immediately switch to thin light stock with no adjustments.  With a self contained hammer, you have tremendous forging power (a combination of ram weight, downward air force and velocity) plus precise control.     

​The Anyang hammers are engineered to run for decades in harsh factory environments.  The frames are cast iron, like the old Nazel, Buche, and Massey hammers.  Cast iron is more expensive to manufacture compared to fabricated hammers but they are heavier, do not flex over time.  

​The internal parts are forged steel and precision machined.  There are no internal rubber air hoses to deteriorate over time.  The drive belts are external to the machine for easy adjustment and away from harmful oil.  

​The crankshaft has large tapered roller bearings set in a case filled with grease.  This design provides for decades of trouble free forging.

Operating Principles of an Anyang Pneumatic Hammer

The operating principles of a self contained power hammer are very simple. There are basically six components to the power hammer:
1. The frame is cast iron. There are several reasons why cast frames have been used for power hammers. Cast frames are more expensive and typically are much heavier. With a cast frame, you can put the strength and mass exactly where you need it. It will not warp or deflect like some steel plate fabricated hammers can do over time. If you look at the old Massey, Nazel, Chambersburg , and Beche hammers, they were all cast iron. You can find many of these hammers still in operation.
​2. The motor drives a flywheel with V belts that are external to the hammer. The flywheel is attached to a crankshaft that is set on large tapered roller bearings in a crankcase that is filled with grease. At the opposite end of the flywheel, there is a "throw" that has a connecting rod attached.
​3. The connecting rod is attached to a compressor piston. When the piston is going up, it creates air pressure that when the valves are opened, forces air into the top of the ram section of the hammer driving the ram down. When the piston is on the down stroke, it creates air pressure that when the valves are opened, moves air into the bottom section of the ram, driving the ram up. The compressor piston has two compression rings and steel wipers on the lower section of the compressor to help keep air from leaking.
​4. There are two valves, an upper and lower that operate together. When the valves are opened by more pressure on the foot treadle, it allows for increased air to move from the compressor to the ram side of the hammer. The wider the valves are opened, the more air is allowed to move to the ram side, creating more forging force/pressure. The valves are precision machined steel with no rubber parts to deteriorate over time.
​5. The ram is literally "floating on air" inside the hammer. The forging force of the hammer is created by a combination of the ram weight, the amount of air pressure that is flowing from the compressor through the valves, and the velocity of the ram. The ram does have two sealing rings on the top and a "stiffing box" with steel "wipers" to help keep the air from leaking.
​6. The last component is the lubrication system. It consists of an oil reservoir, a flow control metering valve, and a one way check valve. When the compressor piston is on the down stroke, it creates a vacuum that "sucks" oil from the reservoir into the hammer. When the compressor piston is on it's upstroke, the one way check valve closes to keep oil from flowing back into the reservoir. This is a very simple yet reliable system that works. Oil is not only a lubricant to the hammer, it is also a part of the sealing system. With proper lubrication, Anyang hammers will run for many decades. If you would every need to rebuild an Anyang hammer, it can be done in a day with parts that I stock.
​Please check out the Video Library to see video's showing more about the operating principles.
7. When forging, never "cold forge". Always make sure the metal is hot. Never hit the dies together without red hot steel between them.
8. Operate the foot peddle like the accelerator of a car. Ease into the throttle, don't stomp on it. Get the ram moving and then add more pressure as desired.

Anyang Pneumatic Hammer Features:

  • Unlike steam hammers or air hammers fed from a supplementary compressor, the Pneumatic forging hammer with its self-contained cylinder,require no ancillary power raising plant.
  • The Pneumatic forging hammer is equipped with a self-priming lubricating oil pump, during operating, it can realize the automatic lubrication.
  • Easy to operate, by manipulating the hand lever or foot-pedal, all operating functions—idle run, top setting, pressing down, single blow, light or full series blow can be obtained as desired.

Specifications of pneumatic forging hammer: 

Model

C41-150

C41-250

C41-400

C41-560

C41-750

C41-1000

C41-2000

Weight of falling parts(kg)

150

250

400

560

750

1000

2000

Below energy (kj)

2.5

5.6

9.5 

13.7

19

27

54

Below frequency(min-1)

180

140

120

115

105

95

80

Height of working area(mm)

370 

450

530

600 

670

800

1000

Depth of throat(mm)

350

420

520

550

750

800

950 

Working

Piece

Square(mm*mm)

130×130

145×

145 

220×

220

270×

270

270×

270

290× 

290

350×

350

Round(mm) 

Φ145

Φ175

Φ240 

Φ280

Φ300

Φ320 

Φ400

Motor  

Model

Y180M-

4-B3 

Y180L-

4-B3

Y200L-

 4-B3

Y280S-

6-B3 

Y280M-

6-B3

Y315S-

 6-B3

Y315L2-

6-B3

Power (kw)

18.5

22 

30

45

55 

75

132

Weight

Without anvil(kg)

3260

5000

8000

9800

17000

20000

48000

Outside size (mm) 

2390×

1085×

2150

2639×

 1155×

2540

1785×

1400×

 2884

3464×

1500×

3157 

3905×

1370×

3175

3770×

 1500×

4125

4200×

2300×

 4390

Pneumatic Forging Hammer Videos:

Pneumatic Forging Hammer Manufacture:

 anyang forging hammer

anyang forging hammers in workshop

air forging hammers

air forging hammers

anyang air hammers

anyang air hammers after painting

2000kg forging hammers

2000kg forging hammers under commssioning

big power hammers

big power hammers ready to be shipped

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