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Open Die Forging Custom Forging Engineering & Design Solutions

What Is Open-Die Forging?

Open-die forging, also known as free forging or smith forging, is the process of striking a hammer to deform a piece of metal, typically placed on a stationary anvil. Another approach is to use compression to press the metal between simple dies. These simple dies are typically flat, semi-round or V-shaped. Regardless of the die shape, the metal is never completely encased in the open-die forging process. The dies hammer or press the metal through a series of repetitions, altering the material until achieving the desired shape.

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.

OPEN-DIE FORGING PROS
Little or no tooling cost
Reduced lead time
A variety of size options, from a few centimeters to nearly 100 feet
OPEN-DIE FORGING CONS
Not suitable for forming intricate, precision parts or other close-tolerance applications
Machining is often required to complete open-die forgings
Process doesn’t always produce consistent results or desired features

A variety of different processes and technologies are used in forging due the wide variety of formed shapes to be produced. With a comprehensive range of especially developed line concepts from DM we will find the most economical solution for you that meets all the demands for cold, warm, and hot forming as well as precision forging.

DRACHMA (ZHANGJIAGANG) MATERIAL CO.LTD has two main production plants. Zhangjiagang plant is responsible for the rough forming of workpieces, mainly forging process; While Hangzhou plant is mainly responsible for precision machining, welding and inspection of products. We implement this layout mainly to use the industrial advantages of each region to achieve maximum economic benefits.

Traditional processing enterprises often do not have such ability, the lack of blank forming ability is unable to achieve the optimal use of materials, resulting in excessive processing allowance, long cycle, high cost. Zhangjiagang is located in the southern jiangsu province, which has the strongest forging capacity in China. It has a good supporting industry and can realize the diversified production of forging and pressing blanks. Thanks to this, the product cycle of our company is faster, the cost performance is higher, and the forging products have better mechanical properties than the products directly processed by rod or plate.

In addition, our company has strong welding ability, which can weld and assemble parts to achieve system delivery. We adopt the mode of automatic robot welding and manual precision welding to achieve flexibility and high quality.

Stainless steel :304/1.4307 316/1.4404 321/1.4541 316Ti/1.4571 317L 904L F44 NO6625 UNS718

440A/B/C 431 446 F6a

Carbon Steel:A105, SA350 LF1, LF2, LF3, LF6, A707, A694, 4130, 4140, 8620, 8630, A182F5, F11, F12, F22, F91, F92

Duplex steel : F51 F60 F53 F55

Alloy Steel:4130, 4140, 4142, 4145, 4150, 4320, 4330, 4340, 4350, 4620, 4820, 6150, 8620, 8630, 8822, 9310, 52100, HY80, HY100, 9315, 300M, Nitralloy 135M, 17-22A

Aluminum : 2014, 2024, 2025, 2219, 2618, 3003, 5083, 6061, 7049, 7050, 7075, 7079, 7149, 7150, and 7175