Currently, most decorative metal profiles are made of flat sheet metal with multistand profile bending machines. Profile manufacturing from a checkered sheet improves decorative properties of such a profile. In this work the process of manufacturing such a sheet was simulated and a decorative checkered profile was obtained.

To get such a pattern, a stamp and a roller were designed and modelled, and the process of metal extrusion relative to the front surface of the profile was carried out.

According to the results of the simulation, a test batch of profiles with a checkered wood imitation pattern was manufactured.

Profile wall upsetting during the last transitions is one of the features of C-shaped profiles formation. It is typical for both sequential and combined pre-bending schemes. Profile wall upsetting allows getting the required radius zone and reducing profile springing back. At the same time, as a result of upsetting, there are significant effects on the outer part of profile flanging, which can lead to applied coating damaging.

Pressure reduction is one of the methods to get profiles of different cross-sections from starting round billets. This process has advantages over other processes of forming - fewer transitions and smaller dimensions of the bending and rolling mill.

Options of pressure reduction of starting metal-coated (steel or aluminium), paint-coated (hard) and polymer-coated (soft) steel tubes were considered in this paper.

The results of modelling of an angle-type section with a wing height of more than (15-20)s by the rolling method were presented.

The wing that is rolled becomes long to the fullest extent at the end and to the minimum extent - at the angle area of the section. So, it acquires a longitudinal radius. 

According to the results of the studies, the maximum deformation occurs near the end of the section and it was equal to (16-18)%, if the radius was 290 mm. 

Processing conditions were selected by changing the parameters of rollers reduction. These conditions made it possible to produce finished products of the required diameter.

The results of modeling of steel billet drilling by a drill with a diameter of 10 mm were presented.

The results include the stress-strain state of the billet both in the cutting zone and across the entire billet, the temperature of the billet and the drill, and the energy-strength parameters of the process.

Based on the developed model the impact of processing conditions on the stress-strain state in the cutting zone and the hole quality was established.