Barrier
The technical solution relates to crash barrier, which has in the cross-section the shape of an open M with rounded convex peaks, flattened concave center and obliquely outwards spread open sidewalls, whereby is made with a wall thickness of 2.3 to 2.7 mm of a material micro-alloyed steel S420MC acc...
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Zusammenfassung: | The technical solution relates to crash barrier, which has in the cross-section the shape of an open M with rounded convex peaks, flattened concave center and obliquely outwards spread open sidewalls, whereby is made with a wall thickness of 2.3 to 2.7 mm of a material micro-alloyed steel S420MC according to CSN EN 10149-2 with a minimum yield strength Re = 420 MPa and chemical composition of the steel in weight percent is: C % max 0.12, Mn % max. 1.60, Si % 0.50 max, P % max 0.025, S % max 0.015; Al% max 0.015%, Nb % max 0.09, V % max 0.20, Ti % max 0.15, Mo % max -, B % max -.
Predložené technické riešenie sa týka zvodidla, ktoré má v priereze tvar roztvoreného M so zaoblenými konvexnými vrcholmi, splošteným konkávnym stredom a šikmo smerom von roztvorenými bočnicami, pričom je vyrobené s hrúbkou steny 2,3 až 2,7 mm z materiálu mikrolegovaná oceľ S420MC podľa normy ČSN EN 10149-2 s minimálnou medzou klzu Re=420 MPa a chemické zloženie tejto ocele v percentách hmotnostných má hodnoty: C % max 0,12; Mn % max. 1,60; Si % max 0,50; P % max 0,025; S % max 0,015; Alcelk. % max 0,015; Nb % max 0,09; V % max 0,20; Ti % max 0,15; Mo % max -; B % max -. |
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