Abstract
Abstract Presented article is focused on strains acting in cold forming process of drawing tubes with shaped internal surface. At present, mathematical simulation, tools make it possible to significantly shorten the deadlines for pre-checking the possibilities of very complex processes. Pulling pipes with an internal shape with a broken surface is a complex problem with many deformation zones. The principle of the shape of the broken pipes is very similar to pulling smooth pipes. In the process, the same dies as the drawing of smooth pipes are used. Courses of total and axial strain describe the transformation of an object from an initial state to the final shape of the tube
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