![]() ![]() This structure ensured the formation of the new composite’s functional properties high level. The formed structure is a metal matrix base of tool steel 4H4VMFS re-generated grinding waste, consisting of high-alloy α−solid solution and hard grains of alloying elements’ carbides, as well as evenly distributed CaF2 anti-seizure solid lubricant. It was shown that the developed technology application provides the formation of the new composite’s fine-grained heterophase structure. ![]() The new composites are designed to work in the units of printing machines’ offset cylin-ders at rotation speeds up to 7000 rpm and increased loads up to 5.0 MPa. The article presents the research results on the structure and properties of new self-lubricating antifriction composites based on 4H4VMFS tool steel grinding waste with solid lubricant addi-tives. Good agreement is also shown for the calculation of various pipe dimensions. The results are verified by comparing them with pyrometric and thermographic measurement data as well as with results calculated by using commercially available software. The predicted time-dependent cooling process must be known to determine the steel pipe microstructure and its mechanical material properties in advance. The section is viewed at points in the production process as the hot tubes are finished by rolling them and cooling them down with air. This model can be applied to predict the temperature distribution within the pipe cross section, depending on time required for the production. ![]() A fast and accurate mathematical model was developed for this purpose. It is difficult to monitor the quality during the production process by taking measurements, because the measured outer surface temperature does not indicate the temperature inside the pipe. To achieve these properties, the temperature inside the entire pipe should not fall below the limit of normalization immediately after rolling. In the production of seamless steel pipes, the pipes must have good mechanical material properties so that they meet quality standards. ![]()
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