3-D Numerical analysis on heating process of loads within vacuum heat treatment furnace

Heat-treatment furnaces for workpiece pre-rolling heating are heating plants of the transition type where sheet slabs with various characteristics are simultaneously heated. The heat treatment furnace performance is directly connected with the efficient operation of the rolling mill process plants. The irregular operation pace of the rolling mill complicates the implementation of energy-saving workpiece pre-rolling heating modes and increases the risk of delivering an insufficiently heated workpiece. This paper proposes the system of controlling the heat mode of the heat-treatment furnace by the criterion of fuel consumption rate minimization and controlling over a real heated state of a sheet slab located at the workpiece pushing from the heat-treatment furnace to the rolling mill. The author uses a simplified mathematical model of workpiece heating intended for defining the energy-saving heating path accounting for the impact of technological and structural constraints in the workpiece heating process. The calculation is conducted in real time and allows obtaining an optimal heating path of each workpiece at the moment of its loading into the heat-treatment furnace. The paper considers the necessity of interaction and the interaction itself of the subsystems performing the key function in the energy-saving operation mode of the heat-treatment furnace at workpiece heating. The author studied the subsystems of forecasting the workpiece heating time on the state of the rolling mill equipment and the geometrical dimensions of the rolled band, control over gaseous fuel burning in the heat-treatment furnace operation space, system of control over the workpiece heating state before pushing from the heat-treatment furnace and forecasting the roll temperature after the treatment of the rolling mill roughing train.

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Numerical analysis of the heat transfer of radiant tubes and the slab heating characteristics in an industrial heat treatment furnace with pulse combustion

International Journal of Thermal Sciences ◽

10.1016/j.ijthermalsci.2020.106757 ◽

2020 ◽

pp. 106757

Author(s):

Qiang Gao ◽

Yuhua Pang ◽

Qi Sun ◽

Dong Liu ◽

Zhe Zhang

Keyword(s):

Heat Transfer ◽

Heat Treatment ◽

Numerical Analysis ◽

Heat Treatment Furnace ◽

Treatment Furnace ◽

Pulse Combustion

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Research on Fuzzy Control in Vacuum Heat Treatment Furnace Temperature Control System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.397-400.1236 ◽

2013 ◽

Vol 397-400 ◽

pp. 1236-1240

Author(s):

Xiao Yan Wang ◽

Zhi Wen Zhou

Keyword(s):

Heat Treatment ◽

Control System ◽

Fuzzy Control ◽

Temperature Control ◽

Temperature Control System ◽

Vacuum Heat Treatment ◽

Single Chip ◽

Furnace Temperature ◽

Heat Treatment Furnace ◽

Treatment Furnace

Vacuum heat treatment furnace temperature parameter is a large time delay, nonlinear,time-varying and complex control objects, Single-chip computer is used as the control core to achieve the temperature control through the fuzzy control algorithm, the hardware structure an software design process are given in this paper, the control precision, dynamic characteristics, and optimization of the performance are improved by this control system.

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