The analysis of the bottom electrode thermal streams during work process in a melting furnace

© Published under licence by IOP Publishing Ltd. Conducted extensive research of thermal work of the existing bottom electrode (BE) of copper in operation. Calculation of optimum parameters (water cooling, temperature of the walls and parameters) BE of copper under specific conditions. Compiled formulas and graphs to determine the optimal geometry of BE under different operating conditions

Analysis of the impact of informative heat treatment parameters on the properties of hardening of the surface layers

© Published under licence by IOP Publishing Ltd.The change features of surface steel layer were investigated under influence of plasma source of concentrated energy. The results of research of the effect of plasma treatment process on the microstructure and the thickness distribution of microhardness of the product and the formation of heat affected zone were presented. The resulting information (informative) data and measured values of microhardness in the hardened layers, depending on the plasma processing modes allow you to manage the process of heat treatment of metals. Designed programming model that works on the basis of the solution of the heat equation, allows to predict and investigate the temperature field after exposure to the plasma stream

Analysis of the impact of informative heat treatment parameters on the properties of hardening of the surface layers

© Published under licence by IOP Publishing Ltd.The change features of surface steel layer were investigated under influence of plasma source of concentrated energy. The results of research of the effect of plasma treatment process on the microstructure and the thickness distribution of microhardness of the product and the formation of heat affected zone were presented. The resulting information (informative) data and measured values of microhardness in the hardened layers, depending on the plasma processing modes allow you to manage the process of heat treatment of metals. Designed programming model that works on the basis of the solution of the heat equation, allows to predict and investigate the temperature field after exposure to the plasma stream

Patterns of food thermal processing in electric deep fat fryers ireka. Gaysin

© Research India Publications. This paper deals with the studies of thermal processes occurring when heating a large volume of oil in continuous electric deep fat fryers with output of up to 150 kg/h, and during food roasting. The paper presents the results of experimental studies of the double deep fat fryer heating process, and their procedure. As a result of the conducted studies, we obtained the temperature-process time relationship t and the coefficient of heat transfer from the surface of the tubular electric heaters to oil. Obtaining experimental data on food heat treatment will ensure direct control of its quality and the quality of fry oil used for this process. Much attention was given to analyze the influence of fried food on thermal processing conditions. Special attention was paid to the design of a deep fat fryer and its main units, directly affecting the results of the experiments. Food deep frying improvement is a relevant task, since the existing methods of frying and the frying machines do not meet the growing demands of industrial technology. Main objective of this paper is to accumulate experimental data for further research on the development of reliable calculation methods and design principles of similar devices

Automatic control system of high precision welding of workpieces in mechanical engineering

© Published under licence by IOP Publishing Ltd. In this paper, based on the conducted patent research, the system of laser welding control with different geometry of weld and shapes of parts is developed. The method of monitoring the position of the spot of laser radiation in relation to the curved weld is worked out; it is based on the tracking the edges of the welded parts by low-power laser radiation reflected from the surface of the parts. It allows to make the positioning of the focus of laser radiation in relation to the juncture of the welded parts automatically

Technology of overlay laser welding of durable powdery into blade edge of miller

© Published under licence by IOP Publishing Ltd. In this paper the laser welding technology features of wear-resistant powders on the hob's cutting edge with laser radiation (LR) focus positioning control are described. It is shown that the quality of the welding process depends on the processing regimes, the energy characteristics of the laser technological complex (LTC), the positioning accuracy of the LR focus and its perpendicularity relative to the plane of a router bit. In this paper we deal with the questions of stabilization of LTC parameters and LR positioning as well

A system for automatic control of precision laser welding in engineering

© 2015 Taylor & Francis. A system for automatic control of the welding zone is described. The system can be used for positioning the focus of laser radiation in relation to the joint between the welded components without participation of the operator and also to control the temperature of the treatment zone

Method of control position of laser focus during surfacing teeth of cutters

© Published under licence by IOP Publishing Ltd. Providing the quality laser of surfacing the edges of teeth requires control not only the energy of the radiation parameters, but also the position of the focal spot. The control channel of position of laser focus during surfacing, which determines the parameters of quality of the deposited layer, was calculated in the work. The parameters of the active opto-electronic system for the subsystem adjust the focus position relative to the deposited layer with a laser illumination of the cutting edges the teeth cutters were calculated, the model of a control channel based on thermal phenomena occurring in the zone of surfacing was proposed

Management of laser welding based on analysis informative signals

© Published under licence by IOP Publishing Ltd. Features of formation precision weld of metal were presented. It has been shown that the quality of the welding process depends not only on the energy characteristics of the laser processing facility, the temperature of the surface layer, but also on the accuracy of positioning laser focus relative to seam and the workpiece surface. So the laser focus positioning accuracy is an estimate of the quality of the welding process. This approach allows to build a system automated control of the laser technological complex with the stabilization of the setpoint accuracy of of positioning of the laser beam relative to the workpiece surface

Pulse plasma surface thermostrengthening of machine parts

© Published under licence by IOP Publishing Ltd. The paper presents a pulse plasma generator for surface hardening of parts. The given equations allow to calculate the parameters of the pulse plasma generator to ensure the specified quality indicators of the hardened zone