9 April 2019

Closed die forging advantages and disadvantages

When it comes to shaping a metal part, forging is the one used to shape the metal in a controlled manner using plastic deformation while there are different types of forging methods, one of the most common is closed die forging. This technique involves the pressing of hot round bars and their net shaping in closed dies. This process provides the desired shapes and is being wide applications for all industries, including engineering, construction, aerospace, power generation, defence, oil, and gas, etc. Let us now have a look at some of its major pros and cons to understand more about it.

Advantages of closed die forging :

  • The forging process of closed die creates net shapes or near-net shapes. 
  • This process offers superior mechanical properties, higher product strength, and toughness.
  • Closed tolerance can be achieved through this process close to + / - 0.3 mm. 
  • It is suitable for steel brass and aluminium as well as some other alloys too. Thus, no material limitation. 
  • Better surface finish so saves the cost of machining. 
  • It is a cleaner and greener process as compared to casting so it is environmentally protected. 
  • Good reproducibility and high production rate. 
  • Parts of sizes up to 25 tons can be produced. 

Disadvantages of closed die forging :

  • This process involves a higher tolling cost that makes it expensive. However, it can be suitable for mass production. 
  • Closed die forging may not be helpful for complex and large products.
  • This process has a limitation on dimension. 

Thus, this process is overall a cost-effective process when used for mass production and to gain higher product strength and toughness.