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What are Steam Or Air Hammers ?

Steam or Air Hammers can be operated by steam or compressed air. They have no built-in compressor and, therefore, require additional facilities for supplying high pressure steam or compressed air to raise striking stroke. The principle of a steam forging is illustrated in the image below. 

Steam Or Air Hammers

Both Single Acting and Double Acting steam - or - air hammer may be constructed for forging. Single acting is made for comparatively light work, while double-acting is made for heavy work. Steam Pressure at the hammer is usually 6 to 8 kg-f / cm2 (590 to 790 kN / m2) and air pressure is bit smaller than that required for steam. Rated sizes of steam forging hammers range from about 400 to 8000kg.

Steam Or Air Hammers

Capacity of Forging Hammers :

The ability of a hammer to deform metal depends on the energy it is able to deliver on impact. The energy from falling is used by work derived from the steam in a double-acting hammer. Steam pressures are commonly from 6 to 2 kg-f per cm2. 

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