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Closed Die Forging: The Definitive Guide

What is Closed Die Forging? 

Closed die forging refers to when more than one die is brought together to surround or partially heat a heated raw material such as steel or aluminum. The profile of the final piece is formed by the pressure exerted against the top die. You can find more information related to forging press online.

Difference between Open-Die and Closed-Die Forging(Comparison Chart)

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Closed die forging is capable of producing an incredible number of three-dimensional shapes. These can range from a few ounces up to over 25 tons. The most common presses are mechanical presses, hydraulic presses, and hammer presses. Their capacities range from 20,000 to 50,000 tonnes.

Closed die forging can create highly complex products. You can cut the dies to make almost any shape. You can also use more than one die if you need them. It is however not suitable for large shapes because of the large dies required.

The closed process results in a more polished surface and tighter grain structure. This creates forgings with greater longevity and strength.

Closed Die Forging Process

This type of forging is also known as impression forging. It requires high-quality forging equipment to achieve precise results. Here is how to forge drop-forged steel.

  • Raw material procurement
  • Tool creation and testing
  • Forging
  • Heating and cleaning
  • Perforating and coining
  • Final inspection and shipping

This ensures that you get exact components that don't suffer from surface finish or voids. We can help you with any coatings, machining, or another testing. We will work quickly to ship your parts in a timely and efficient way to meet your deadlines.


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