Development of technology and mastering the production of pipes with a diameter of 2520 mm

Strengthening coastlines in the Far North is a complex and technically difficult task. To minimize uncontrollable natural disasters and fairly severe weather conditions, as well as due to the large volumes of ports, the shoreline is strengthened with pipe sheet piles and piles with a diameter of 2520 mm. The products are in demand and have high margins. This assortment has not previously beenproduced on an industrial scale by PJSC TMK and in the Russian Federation in general. The only method that allows you to obtain the required workpiece is the JCOE method. This article describes the main stages of development of pipes with a diameter of 2520 mm. 1. Using modern engineering analysis methods based on the finite element method (FEM), the technical feasibility of pipe production was assessed, as well as the development of technological pipe bending and forming modes. 2. An analysis of the influence of mechanical properties on the geometric parameters of the finished product was carried out. A new technique for monitoring the geometry of a pipe blank during step forming with subsequent predictive analytics is proposed; Multiple regression equations have been obtained to evaluate the impact of changes in the controlled dimensions of the sheet blank during the step molding process. 3. Using modern CAD modeling packages, a new automated section for the assembly of workpieces was developed and designed. 4. A technological scheme for the production of pipes of a new range has been developed. 5. Experimental work on the production of pipes was carried out. The developed new method for producing pipes with a diameter of 2520 mm expanded the existing range of the enterprise, and also had positive economic efficiency due to the high marginal cost. The new production method has confirmed its efficiency and in practice (production of a pilot batch) has proven its feasibility.