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Continuous-Discrete Boundary Problems in the Concepts of the Construction of Foundry Rotary-Conveyor Lines
Author(s) -
V.S. Doroshenko,
Volodymyr Kravchenko,
Olena Mul,
Olena Tokova
Publication year - 2019
Publication title -
boundary field problems and computer simulation
Language(s) - English
Resource type - Journals
eISSN - 2255-9132
pISSN - 2255-9124
DOI - 10.7250/bfpcs.2018.004
Subject(s) - foundry , mechanical engineering , casting , line (geometry) , computer science , process engineering , control theory (sociology) , engineering , manufacturing engineering , mathematics , control (management) , materials science , geometry , artificial intelligence , composite material
The problem of mathematical construction for the process of the control of the metal casting crystallization and cooling in a foundry mold is considered. The casting is surrounded by a layer of sand mixture, which is a porous dispersed medium that conducts heat, in terms of the concepts of the construction of foundry rotary-conveyor lines (RCL). The problem of developing an interval model for determining the speed of the conveyor line from the production of metal castings is studied. Herewith, continuous processes of the transport and technological movement of the processed materials, equipment, tools, energy carriers, and final production output are combined with inevitable stops of this continuity, which lead to discreteness, and a combination with a number of accompanying continuous, discrete or reciprocating processes. The adequacy of the model for the given technological parameters is justified. The mathematical description and agreement of the values of technological parameters for regulation and finding the optimal speed of the conveyor line at the interaction of its component rotational systems, as well as the mathematical models for program control and remote monitoring of technological modes in order to obtain the casting of the given quality are considered. The possibility of selecting the corrective parameters for the change of the conveyor line speed is shown. Tiek skatīta matemātiskās konstrukcijas problēma metāla liesanas kristalizācijas un dzesēsanas kontroles procesam liesanas veidnē. Lējumu ieskauj smilsu maisījuma slānis, kas ir poraini izkliedēts materiāls, kas vada siltumu. Lietojot lietuves rotācijas konveijeru līniju (RCL) koncepciju, tiek pētīta intervāla modeļa izveides problēma konveijera līnijas ātruma noteiksanai metāla lējumu ražosanai. Tajā pasā laikā nepārtraukti apstrādājamo materiālu, iekārtu, rīku, enerģijas nesēju un gala produkcijas transportēsanas un tehnoloģiskās kustības procesi tiek apvienoti ar sīs nepārtrauktības neizbēgamajiem apstāsanās gadījumiem, kas noved pie kombinācijas ar vairākiem nepārtrauktiem, diskrētiem vai pārvietosanās procesiem. Ir pierādīta modeļa piemērotība attiecīgajiem tehnoloģiskajiem parametriem. Tiek parādīta iespēja izvēlēties koriģējosos parametrus konveijera līnijas ātruma maiņai.

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