Closed Die Forging

How Closed Die Forging Works

There are two dies for closed die forging, which are top die and bottom die. Both of them have the pattern of part shape. Move the top die and extrude the heated round bar downward to make the metal flow into each part of the mold under the action of pressure, and a small amount of excess metal will flow out, forming a thin flash. After cooling, the flash can not only organize the metal outflow, but also act as a buffer to reduce the impact of the upper die on the lower die and prevent the die from cracking. Finally, we will get raw parts after the flash is cutted.

Advantages & Disadvantages

Compared with casting, forging has its special advantages:

1. In the case of the same material, the mechanical properties of forgings are better than those of castings.
2. The forgings strength is higher and the fatigue resistance is stronger.
3. The forgings has better compactness.
4. There are no internal defects and surface defects.
5. Fast production speed, high efficiency, suitable for mass production of products.
6. The product quality is stable.

Forgings also have it’s own disadvantages:

1. Although forgings can produce complex shapes, compared with casting, many shapes are still can’t be forged
2. The cost of die is much higher than that of castings, and the die is the key to the forging.
3. If the production quantity is small, the production cost-effectiveness is poorer.

Why Choose Maple Machinery

Maple Machinery is a one-stop manufacturing expert based on casting and machining, forging and casting are closely related. Therefore, maple mahchinery has been providing professional forging services for customers for more than ten years since its establishment. We do not have forging equipment in our factory, but there are three forging factories with excellent technology in Ningbo have established a cooperative relationship with us for more than ten years. They have no international trade department, but their forging capacity is outstanding in local. They have advanced forging equipments. The friction presses mahcine of 300t, 400t, 600t, 1200t and 1600t can produce forgings as small as dozens of grams and as large as 40kg.

We not only help customers purchase raw forging parts, but also finish machining and treatment in our own machineshop; we can also improve the design of casting or welding parts into forging parts, and help customers provide process solutions to obtain forgings with stronger mechanical properties and more stable quality.

Closed die forging is Maple machinery’s second largest business scope and makes our company an expert in metal manufacturing solutions. We are committed to provide customers with a full range of professional manufacturing services, and the strictest quality control. No matter the raw parts comes from our foundry or other manufacturers, we will finish the machining and quality inspection in our own machineshop to ensure that the parts delivered to customers are 100% perfect.