International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

One of the main ways of obtaining high yields is a method of sowing and technology for its implementation. At present in the world practice, the creation of high-performance and adapted to certain soil-climatic conditions, sowing units is moving in two directions: increasing the degree of combination (versatility) of sowing machines and the use of centralized tanks for seeds and fertilizers, and pneumatic sowing systems.
However, models of seeders with CVS do not fully meet agro technical requirements for uniformity of sowing between coulters and are aggregated only with a specific tractor class, while having a high cost and low annual load. In this connection, the creation of high-performance and adapted to certain soil and climatic conditions of Kazakhstan is very relevant.

The paper describes the metrological activity in D.I. Mendeleev Institute for Metrology (St.-Petersburg, Russia) in the field of dilatometric research of solids. The main attention is paid to standard reference materials and standard samples of Thermal Expansion.

The texture evolution in pipeline steel is studied as a function of the thermo-mechanical processing parameters –rolling tem- perature and cooling rate after the finish rolling stage carried out with equal rolling reduction per pass.. The austenite recrystallization and grain growth during thermo-mechanical control processing (TMCP) of a pipeline steel grade are described and analysed in terms of precipi- tation state progress. Two stage controlled rolling (roughing and finishing) was carried out on a laboratory rolling mill for a set of complet- ed and interrupted schedules. Subsequent to rolling, two different cooling routes were used water quenching and accelerated water cooling (ACC) together with coiling simulation. From the combination of transmission electron microscopy (TEM) observations, detailed texture analysis and inductively coupled plasma-mass spectroscopy (ICPMS) precipitates quantification, consistent correlations between precipita- tion state and microstructure at every stage of TMCP can be recognized. The formation of specific transformation textures was explained via appropriate texture models that describe both formation of transformation and recrystallization textures in the austenite.