FIELD: plastic metal working, possibly manufacture of corrugated sheet rolled sections.
SUBSTANCE: process is realized due to shaping at successive passes corrugations with predetermined bending up angle beginning from strip mean portion. Angles of bending for each corrugation during successive passes are set equal to 25°→ 45°→ 65°→ 80°→ 90°. Strip is successively shaped till formation of corrugations having in cross section vertical walls, oval apexes and inter-corrugation portions. In two last passes corrugations are upset at inclining their walls outside to horizon due to applying to shaped strip crosswise mutually opposite forces in horizontal plane. In last but one pass walls ate inclined by angle consisting (1.17 -1.20)α and in last pass walls are inclined by angle α.
EFFECT: possibility for producing high quality sections with desired contour of cross section for minimum number of passes, lowered production costs.
2 cl, 2 dwg, 1 ex
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| METHOD FOR PRODUCTION OF CORRUGATED PROFILES | 0 |
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SU1759501A1 |
| METHOD FOR PROFILING STEEL STRIPS | 1998 |
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RU2149072C1 |
