Аннотации:
This article presents a new multi-functional mill of a new design. The main technical
characteristics of the mill is its ability to reduce the diameter of the working rolls in the direction of rolling
and to provide the rotation of working rolls through the bearing stand with the five gear motors of 15 kW.
Technical characteristics of projected multi-functional mill allow producing the hot-rolled and cold-rolled
thin strips of steel and alloys, copper strips of thickness of less than 1 mm, titanium and aluminum sheets
of thickness of 2-0.5 mm, and silver strips of thickness of less than 2 mm; it also provides rolling from the
precious metals, etc. The stress-strain state of heavily loaded components of the proposed mill is
calculated by using APMW in Machine (HASP) software. It is proved that the magnitude of elastic
deformation and displacement of the mill rolls is small while rolling in the new mill. It is also proved by
the conducted research that sufficiently high rigidity of rolls of the mill stands and the equivalent stresses
arising in the rolls do not exceed the maximum allowed value of the ultimate strength for the material.
The patterns of the change in the microstructure of the steel A1 during the physical simulation of
rolling and cooling on new longitudinal wedge mill and outgoing roller table have been investigated in this
article with the use of modern high-precision equipment Gleeble 3500. The conditions of the steel A1
during a multi-stage compression at different temperatures and strain rates have been described from the
single position. The analysis of influence of the temperature modes of cooling on the microstructure of the
steel A1 during the transportation at new outgoing table has been conducted. The kinetics of growth and
decomposition of austenite has been considered, and the conditions of ultrafine-grained structure
formation have been marked.
