FIELD: machine building.
SUBSTANCE: group of inventions relates to the field of machine building. Tubular spring is made in form of helical spring, torsion spring and/or stabilizer for trackless vehicles. Tubular spring includes metal tubular element with internal cross section of pipe, inner diameter (DI) of pipe, outer diameter (DA) of pipe, internal wall (7) of pipe and thickness (W) of pipe wall. In internal cross-section of pipe of metal tubular element of tubular spring there is foamed material (8) with metal component. Metallic tubular element comprises martensite structure. Metal tubular element is subjected to plastic shaping with formation of tubular spring which is not completely straight-line. Method discloses steps of making tubular spring. Tubular spring is used in running gears of vehicles.
EFFECT: higher operating characteristics.
12 cl, 3 dwg
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