METHOD FOR PRODUCING BENT PRODUCTS OF ROLLED ALUMINUM ALLOY SHEETS WITH RADIUSES LESS THAN LEAST ONES SET ACCORDING TO ADMISSIBLE DEFORMATION VALUES OF BOUNDARY FIBERS

摘要

FIELD: plastic metal working, possibly manufacture of bent articles of rolled sheets of given in specification aluminum alloys. ^ SUBSTANCE: before realizing bending of sheet by radiuses less than least ones set according to admissible deformations of boundary fibers, sheet is subjected to heat treatment in the form of recrystallization annealing. Temperature of last stage of recrystallization annealing for each alloy is determined with use of experimental graphic relationships for each metal of alloy depending upon percentage content of metal in rolled aluminum alloy sheet. ^ EFFECT: enhanced quality of articles, lowered labor consumption for making articles. ^ 4 dwg, 1 ex