Abstract
Reinforcing wire is the main structural element in reinforced concrete structures, widely used in the construction of buildings and structures for various purposes. The type of profile is important factor which determines the consumer properties of fittings. This indicator directly affects the quality of reinforcement adhesion to concrete and the properties of the wire. Currently a periodic profile is the most common type, but a screw profile is the most promising form of the profile. Two methods are used in the production of cold-formed screw profiles: applying a screw profile and torsion process. The first is carried out by rotating the profiling element, and the second by torsion of the workpiece of the shaped section. The patent and literature review of methods for obtaining cold-formed screw profiles has shown that the most effective way to obtain reinforcing wire with a screw profile is torsion, which provides, in addition to profiling, an increase in the mechanical and operational properties of the wire. With the help of the Deform-3D software package we identified impact of the profile, namely the shape of the cross section on the tension. By choosing rational torsion parameters, it is possible to achieve a favorable stress-strain state and respectively the properties of the product. One of the promising areas of development is the combination of a periodic and a screw profile, and it is necessary to obtain a screw profile using torsion deformation as a method of intense plastic deformation in order to form a uniform structure in metal with a minimum stress state in addition to the profile. We justified the application of radial shear broaching, an analogue of the radial shear rolling process, which allows to obtain a screw profile reinforcing wire with high mechanical properties due to the production of a finely dispersed structure. This method is implemented on standard drawing equipment and provides an increase in the productivity of wire production by torsion compared to other methods
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