Closed Die Forgings - Things to Know!

 There are several methods that entail dying forging when it comes to twisting and deforming metal works with closed die forgings. The forging methods of open and closed dies are two of them with the help. Both use the same fundamental techniques—heating and forcefully deforming metal—but they differ when it comes to the die plates themselves.

Let's examine the definitions, distinctions, and many advantages and disadvantages of each die-forging technique.




What is Open and Closed Die Forging Open-Die Forging?

A piece of metal is forged with an open die, often referred to as free forging or smith forging, by striking it with a hammer while it is normally resting on a stationary anvil. Another strategy is to push the metal between simple dies using compression. Most frequently flat, semi-round, or V-shaped, these straightforward dies with the maintenance of eyebolts. The metal is never entirely enclosed during the open-die forging process, regardless of the die form. The metal is altered by the dies as they repeatedly hammer or press it to form it into the desired shape.

Since the dimensions created by hammering during the open-die process might be erroneous, open-die forging is not advised for complicated geometries and frequently requires precision machining to finish the operation. Know the advantages:

  • Nil or little tooling costs

  • Shorter lead time

  • A range of sizes available, ranging from a few inches to almost 100 feet


ADVANTAGE OF FLASH IN CLOSED-DIE FORGING

The closed-die procedure makes use of the thin layer of flash that may be produced by both types of die forgings (extra material squeezed out during the die-forging process). The impression is put under more strain when the metal flash quickly cools, which encourages it to flow into cracks and features. After that, the extra flash is manually taken out.


CLOSED-DIE FORGING PROS

  • Enhanced mechanical characteristics and improved surface finish

  • No or little machining

  • For big manufacturing runs, economical

  • It is possible to produce dimensions with more exact tolerances and other forms.

  • More precise, consistent impressions

  • Ability to reproduce nearly any shape and/or size


If you think your production can benefit from closed-die forging, we can help. KDK Forging Co. is a leading developer and manufacturer of closed-die forgings for high-performance applications. We have more than 100 years of impression-die forging experience in a variety of forging markets all over the world. To deal with the forging, you can feel easy to deal with the forging works. 


Benefits of Closed Die Forging

  • Distinct from investment casting, the initial costs of forging dies for developing metal components in closed die forging are quite high, but by comparison, if the parts are in high volume, it is the most cost-effective metal forming method for the low cost of each part.

  • During the closed-die forging process, the pressing of the workpiece between forging dies will refine the inner grain, and the mechanical properties of closed-die forged parts, especially the strength, will be improved. So, when safety factor and strength is considered, like lifting & rigging hardware, closed die forging will be a unique choice.

  • As products are deformed in high-precision forging dies, so the tolerances of closed-die forging parts are always tight. And the surface finish is always good. Normally, we can control closed die forging parts within tolerance +/- 0.5mm. In this way, this forging technic is a net or near-net shape process that requires less or no machining. So for some parts made in forging and casting, there will be obvious advantages of closed die forging for its less machining cost.

  • Material is saved. If you learn about closed-die forging, then you will know the only waste of material during the forging process is the flash. Such flash will be moved by trimming the die, and you will be a finished forging blank after that. Thus we can see that flash is the only redundant material, but it can be recycled.




Bottom Line

To manage the closed die forgings and setup, it is always important to set up the forging settings whenever required. Connect with KDK Forging Co. to deal with the forging maintenance.  


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Address: K.D.K. Upset Forging Company
2645 W. 139th St.
Blue Island, IL 60406

P: (708) 388-8770


Location: 139th St, Blue Island, IL 60406, USA

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