Which type of force is applied through a die in forging operation?

Explanation:

Forging is a process in which material is shaped by the application of localized compressive forces exerted manually or with power hammers, presses, or special forging machines. The process may be carried out on materials in either hot or cold state.

There are following types of forging:

Smith Forging:

• The process involves heating the stock in the blacksmith’s hearth and then beating it over the anvil.
  To get the desired shape, the operator has to manipulate the component in between the blows.
• No die is used to get the desired shape.
  The types of operations available are fullering, flattening, bending, upsetting, and swaging.
  Applications of Smith Forging
• • It is used to fabricate components like bolts, nuts, keys, tongs, springs, etc.
  • The agricultural tool and links are fabricated by the smithy forging mechanisms.

Drop Forging: 

• This method of forging uses a closed impression die to obtain the desired shape of the component.
• The shaping is done by the repeated hammering given to the material in the die cavity with drop hammers.

Press forging: 

• Press forging, which is mostly used for forging of large sections of metal, uses a hydraulic press to obtain slow and squeezing action instead of a series of blows as in drop forging.
• The continuous action of the hydraulic press helps to obtain uniform deformation throughout the entire depth of the workpiece. Therefore, the impressions obtained in press forging are cleaner.

Important Points

Tensile force is used while wire drawing.