How Do You Stop A Thin Aluminum Workpiece From Curling?
The material condition is more likely to be the culprit than any particular choice at the machine tool.
Personnel from Boeing's Research & Technology group recently answered readers' questions. One reader asked the following.
Question
I milled some 6061 T6 aluminum into some long flat tapered wedges, 0.040 inch on the thick end to 0.005 inch over a span of 20 inches, and they curled when I released them from my fixture. I tried different tool geometries, speeds, feeds, and depths of cuts. Do you have any suggestions?
Response from Boeing’s Research & Technology group
It sounds like you are using material that is not stress-relieved. 6061 T6 is in the "quenched and aged" condition. I would recommend buying material in a stretched condition (6061 T651) and making sure to machine equal amounts of material from both sides in order to balance the stresses.
Related Content
-
Solar Atmosphere Receives Boeing Approval for Vacuum Oil Quenching
The approval was granted for oil quenching of alloy steels in the company’s new furnace, the Neo.
-
How a Custom ERP System Drives Automation in Large-Format Machining
Part of Major Tool’s 52,000 square-foot building expansion includes the installation of this new Waldrich Coburg Taurus 30 vertical machining center.
-
How to Meet Aerospace’s Material Challenges and More at IMTS
Succeeding in aerospace manufacturing requires high-performing processes paired with high-performance machine tools. IMTS can help you find both.
