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Open Die Forging vs Closed Die Forging

open die forging vs closed die forging

Forging is a time-tested way to create durable stainless steel and steel alloy components. Find out why forging is an ideal alternative to subtractive manufacturing processes and compare open die forging vs closed die forging. At Trenton Forging, we can answer all your questions about forging options and why you should consider this manufacturing process for your precision components.

What Is Open Die Forging?

Both open and closed die forging use a die to hammer or stamp your steel billets into the desired shape. One major factor to consider when comparing open die forging vs closed die forging is that an open die requires additional equipment to achieve a final product. An open die is best used to create simple objects, such as rings, cylinders and discs, but the additional equipment requirements make it less than optimal for precision components.

What Is Closed Die Forging?

Using closed die forging creates a better surface finish and increased overall strengths and tightness of the grain structure. For mass-produced components, a closed die forge is a recommended option that doesn’t require additional industrial equipment to achieve the ideal finish.

A closed die forge requires more time and investment to create the die tooling. The closed design requires these closed-impression dies to be constructed with precision to prevent voids and to improve the tolerance of your machining.

Also referred to as impression forging, closed die forging requires state-of-the-art forging equipment for precision results. At Trenton Forging, we use an air-lift, gravity-drop hammer to provide the force necessary to create a detailed component out of a steel billet. Here is the basic process of closed die forging at our facility:

  1. Raw material procurement
  2. Tool creation and testing
  3. Forging
  4. Cleaning and heat treating
  5. Coining and piercing
  6. Final inspection and shipping

This process ensures you receive accurate components that aren’t affected by voids or surface finish issues. If you need coating, machining, pull testing or additional testing and processing, we incorporate these elements into the timeline and work to start shipping your components in a prompt and efficient manner to meet your deadlines.

What Are the Advantages of Closed Die Forging?

Compared to subtractive manufacturing and billet machining, closed die forging is a particularly efficient option. Eliminate post-processing costs and waste products by choosing our industry-leading services.

Closed die forging heats the steel billets to retain or even improve the raw material grain structure. This results in improved longevity and strength of your final product when compared to other machining, casting or fabrication methods.

Trenton Forging uses a closed impression die forging process. We work with precision dies to efficiently produce the custom or mass-produced workpieces you need.

Where Can I Learn More About Open Die Forging vs Closed Die Forging?

Discuss the pros and cons of open die forging vs closed die forging today with our team at Trenton Forging. Request a quote today to discover how you can enjoy affordable forged products for automotive, construction, marine, defense or other industries.

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