Компьютерное моделирование процесса обжига садки керамических камней с учетом естественной конвекции воздуха внутри садки

A three-dimensional mathematical model for numerical modeling of burning process intended for a brick charge. The model presupposes natural air convection inside of the charge for tunnel ovens. Computer modeling of burning process for a charge fragment by specified temperature curve has been carried out. Calculations of temperature field taking place in the area of charge fragment are presented in the paper.Предложена трехмерная математическая модель для численного моделирования процесса обжига садки кирпичей с учетом естественной конвекции воздуха внутри садки для печей туннельного типа. Проведено компьютерное моделирование процесса обжига для фрагмента садки по заданной температурной кривой. Представлены расчеты полей температур, возникающих в пространстве фрагмента садки

Математическая модель для расчета динамики улавливания шлаковых частиц в литниковых системах

On the basis of Navier-Stokes equations a mathematical model for calculation of a trajectory of non-metalic particle motion in a gate system is proposed in the paper. The model takes into account three-dimensional nature of fast-track field and buoyancy force. Taking various gate systems as an example and using mathematical model it makes it possible to calculate number of slag particles passing through the gate system in casting.На основе уравнений Навье - Стокса предложена математическая модель для расчета траектории движущейся в литниковой системе неметаллической частицы, учитывающая трехмерный характер скоростного поля и силу Архимеда. На примере различных вариантов литниковых систем по математической модели рассчитана доля частиц, проходящих через систему литников в отливк

Компьютерная система «ПроДСП-1.0» для оптимизации технологии плавки в дуговых печах

The model for slag smelting regime has been developed. This model makes it possible to calculate phosphorus distribution according to slag composition, initial content of phosphorus in metal, temperature and time of lime efficiency. The model can be used for optimization of quantity and composition of slag , decrease of lime consumption and optimization of slag regime.Разработана модель шлакового режима плавки. Модель позволяет рассчитывать распределение фосфора в зависимости от состава шлака, начального уровня фосфора в металле, температуры и времени отдачи извести. Модель может быть использована для оптимизации количества и состава шлака, снижения расхода извести и оптимизации шлакового режима

ПРОГРАММНОЕ ОБЕСПЕЧЕНИЕ ДЛЯ ОБРАБОТКИ ИЗОБРАЖЕНИЙ МИКРОСТРУКТУР ЖЕЛЕЗОУГЛЕРОДИСТЫХ СПЛАВОВ

The paper proposes a mathematical apparatus for image processing of a cast-iron microstructure of a pearlite class that has casually distributed graphite inclusions in the structure the software has been developed and it allows to determine statistical functions concerning distribution of graphite inclusion characteristics according to areas, perimeters and distances between inclusions. The paper shows that computer processing of gray pig-iron microstructure image makes it possible to classify microstructures on the basis of statistical distribution of a graphite phase which are considered as indiscernible while applying conventional metallographic methods and it has practical significance for investigation of the interrelations – «workability – cast iron microstructure».Предложен математический аппарат для обработки изображений микроструктуры чугунов перлитного класса, имеющих в структуре случайно распределенные включения графита. Разработано программное обеспечение, позволяющее определять статистические функции распределения характеристик графитных включений по площадям, периметрам и расстояниям между включениями. Показано, что компьютерная обработка изображения микроструктуры серого чугуна позволяет классифицировать неразличимые традиционными металлографическими методами микроструктуры на основе статистического распределения графитной фазы, что имеет практическое значение для исследования взаимосвязей «обрабатываемость – микроструктура чугуна»

Computer Modeling of Burning Ceramic Stone Charge Taking into Account Natural Air Convection Inside of Charge

A three-dimensional mathematical model for numerical modeling of burning process intended for a brick charge. The model presupposes natural air convection inside of the charge for tunnel ovens. Computer modeling of burning process for a charge fragment by specified temperature curve has been carried out. Calculations of temperature field taking place in the area of charge fragment are presented in the paper

Prolit computer system for modelling the flow of cooling melts into the casting bed

The article describes the structure of the programme project for three-dimensions modelling of the cooling melt flow. It presents the data on filling and crystallization of the Radiator casting manufactured at MZOO. These data was calculated with the help of a developed computer system

Informational technologies in problems of analysis of high speed melt flows in runner pipes

The computer calculations of cast iron flow in industrial foundry goods “Radiator** with different constructive elements of gating systems are carried out. The distributions of total pulse of melt flow on components of velocity vector are calculated. There are offered the characteristics of melt flow for choice of the optimal gating systems constructions

Mathematical Model for Calculation of Catching Dynamics of Slag Particles in Gate Systems

On the basis of Navier-Stokes equations a mathematical model for calculation of a trajectory of non-metalic particle motion in a gate system is proposed in the paper. The model takes into account three-dimensional nature of fast-track field and buoyancy force. Taking various gate systems as an example and using mathematical model it makes it possible to calculate number of slag particles passing through the gate system in casting

«ProDSP-1.0» Computer System for Optimization of Smelting Technology and Power-Saving in Electric Arc-Furnaces

The model for slag smelting regime has been developed. This model makes it possible to calculate phosphorus distribution according to slag composition, initial content of phosphorus in metal, temperature and time of lime efficiency. The model can be used for optimization of quantity and composition of slag , decrease of lime consumption and optimization of slag regime

PARAMETERIZATION OF MICROSTRUCTURES IMAGES OF SPHEROIDAL GRAPHITE CAST IRON ON THE BASIS OF THE GRAPHITE DISTRIBUTION DENSITY FUNCTION OF THE INCLUSIONS SIZE

The possibilities of parameterization of microstructures such as SHG2, SHG4, SHG6, SHG10, SHG12, SHgd15, SHgd25, SHgd45, SHgd90, SHgd180, SHgd360 according to GOST (State All-union standard) 3443–87 based on the microstructures of cast iron with different diameter spheroidal graphite are shown. It is proposed to use the function of the density distribution of graphite inclusions in size for the classification of cast iron microstructures with spheroidal graphite. It is shown that density function of graphite inclusions can be used as a criterion of classification of microstructures of cast iron with spheroidal graphite, that offers new opportunities for the quantitative analysis of relations «microstructure-property» for cast iron with spheroidal graphite