Aluminum alloy, as a widely used alloy material, can be applied across various industries through multiple processing methods. Among these, aluminum alloy forging die forging is a common manufacturing technique. Today, we will delve into what aluminum alloy forging die forging entails and its practical applications in production.
The production of aluminum alloy forgings can be carried out on various forging equipment. For instance, drop hammers can be used for open-die forging and closed-die forging, with relatively low production costs. During the forging process, it is essential to control the height of the hammer head, striking force, and speed, as aluminum alloys are sensitive to strain rate and exhibit thermal expansion.
Mechanical presses and screw presses are widely used for closed-die forging of aluminum alloys, suitable for producing aluminum forgings of moderate size, large volume, and moderate shape. Hydraulic presses, on the other hand, are ideal for manufacturing very large closed-die forgings or highly complex aluminum alloy forgings. The deformation in hydraulic presses is easier to control compared to other equipment, making them particularly suitable for producing ordinary, high-definition contour, draft-free precision and net-size aluminum alloy forgings.
Due to the poor fluidity of aluminum alloys (worse than steel and titanium alloys but better than magnesium alloys) and their sensitivity to cracks, it is not advisable to use gathering processes. Additionally, the forging temperature range for aluminum alloys is relatively narrow, typically requiring single-die slot forging. The billets required for die forging are mostly produced through free forging, which must be precise to prevent incomplete filling or chaotic flow lines in the forged parts.
During die forging on a press, two operations—pre-forging and final forging—are typically required. When the deformation degree in a single press stroke exceeds 40%, a significant amount of metal will extrude toward the flash, preventing the die cavity from being fully filled. For forgings with highly complex shapes, multiple forging passes are also necessary.
Aluminum alloy forging includes various methods such as open die forging and closed die forging, with most required blanks produced through free forging. Free-forged blanks must be precise to prevent incomplete filling or disrupted flow lines in the forged parts.
Through the above introduction, we believe everyone has gained a deeper understanding of the aluminum alloy forging die forging process. We hope this information will help you better apply this process and improve the quality and performance of aluminum alloy products.