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Bending Aluminium 1
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Unless You are dealing with "annealed or low-alloyed" aluminum there WILL be a critical minimum bend-radius and a minimum "spring-back" factor in every case. Note: for virtually every alloy/temper combination [or "similar-to" combination] this data is published. I use company data so I can't send you numbers; however, many aircraft sheet metal fab manuals have this data.
Note: simple bend-tests should confirm min BR and spring-back for various samples.
NOTE: this data is usually valid for STRAIGHT-LINE bends using constrained tooling, such as a "break" with radiused edges. Caution: bends thru a curve CAN present different challenges!!!
NOTE: deburr edges carefully and examine outer BR surfaces and edges with 10X--50X magnification for signs of cracking [NDI if questionable]. Regards, Wil Taylor
Unless You are dealing with "annealed or low-alloyed" aluminum there WILL be a critical minimum bend-radius and a minimum "spring-back" factor in every case. Note: for virtually every alloy/temper combination [or "similar-to" combination] this data is published. I use company data so I can't send you numbers; however, many aircraft sheet metal fab manuals have this data.
Note: simple bend-tests should confirm min BR and spring-back for various samples.
NOTE: this data is usually valid for STRAIGHT-LINE bends using constrained tooling, such as a "break" with radiused edges. Caution: bends thru a curve CAN present different challenges!!!
NOTE: deburr edges carefully and examine outer BR surfaces and edges with 10X--50X magnification for signs of cracking [NDI if questionable]. Regards, Wil Taylor
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