Aluminum alloy ring rolling characteristics

【China Aluminum Industry Network】Key Features of Aluminum Alloy Ring Rolling Recently, Quanyue CNC Liugong has been discussing the rolling process of aluminum alloy annular forgings, including materials like 5083, with customers. The following insights are shared to help readers better understand the challenges and solutions in this field. Many manufacturers still rely on vertical or horizontal boring machines for ring rolling. However, not all companies have the expertise and experience of the Southwest Aluminum Group. Some believe that forging with hammers provides denser results without looseness, but they also admire the efficiency of modern ring rolling machines. This leads to several common questions regarding the characteristics of aluminum alloy ring rolling: 1. How to accurately determine the material expansion ratio? 2. Is the machine power insufficient, making it difficult to roll? 3. After rolling, the ring may become oval or show end depression—could this be due to operational errors? 4. Are operators unfamiliar with mold applications? 5. Is the ring rolling machine unsuitable for aluminum alloys? Based on our experiences at Quanyue CNC, here are some practical tips we’d like to share: 1. The wall thickness ratio should not exceed 3 to ensure stability during rolling. 2. The die design should include a proper draft angle and mandrel; it’s recommended to consult with mold experts. 3. Before forging, the aluminum bar should be heated after surface treatment to improve workability. 4. The blank thickness before rolling should be controlled to be less than or equal to 20 mm, which helps with material deformation. 5. Avoid rolling too fast—apply higher pressure when the material flows smoothly. 6. Increase the excess amount to prevent loosening caused by sticking during roughing. 7. Too much graphite can cause the machine to idle, so use it carefully and adjust the die-metering accordingly. We hope these insights prove helpful and look forward to further discussions with industry professionals. Jinan Quanyue CNC Machinery Co., Ltd.

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