What is the difference between closed and open die forging?

While impression or closed die forging confines the metal in dies, open die forging is distinguished by the fact that the metal is never completely confined or restrained in the dies. Most open die forgings are produced on flat dies.

What are the advantages of open die forging?

There are many advantages to forging a part in the open die process. The open die method tends to be more cost effective for low volume parts. Additionally, parts forged in this method can result in finer grain sizes and continuous grain flow, resulting in an overall stronger part.

Which is the disadvantages of open die forging?

Open-die forging is not recommended for complex shapes, and often requires precision machining to complete the process since the dimensions produced by hammering during the open die process can be imprecise.

What is an open die forging?

Open die forging involves the shaping of heated metal parts between a top die attached to a ram and a bottom die attached to a hammer, anvil or bolster.

What’s the difference between open and closed die forging?

While impression or closed die forging confines the metal in dies, open die forging is distinguished by the fact that the metal is never completely confined or restrained in the dies. Most open die forgings are produced on flat dies.

What are the different types of die forgings?

They are characterized by specific grain directions (ST – Short Traverse; LT – Long Traverse; and L – Longitudinal), and are produced in many shapes, from the classic “block” configurations to bent, stepped, or curved shapes. Cost of developing closed die forging tool is cut-rate.

What makes a good open die forging candidate?

Aluminum Precision Products offers a wide range of Open Die Forging alloys, configurations, tempers and sizes. Both our Santa Ana and Oxnard facilities in California produce Open Die Forgings. APP can produce special shapes and round hollows (trepanned and/or bored). For more information see our Guide on what makes a good die forging candidate.

How are precut dies used in steel forging?

In this process, precut dies known as “tooling” are brought together to completely or partially surround a heated raw material like steel or aluminum. Situated in the bottom die, the material starts off at a size and shape that roughly approximates the final forged product.