Control method of heating furnace hot-delivery transverse-moving steel pushers based on dynamic correction

Abstract

The invention provides a control method of heating furnace hot-delivery transverse-moving steel pushers based on dynamic correction, and relates to the technical field of steel production. The control method comprises the following steps that a displacement detector is arranged, an initial position proximity switch is arranged, a middle position proximity switch is arranged, a termination position proximity switch is arranged, the displacement values of the transverse-moving steel pushers are collected, deviation is dynamically corrected, the relative positions of the two transverse-moving steel pushers are corrected, the initial position is returned, and the operation cycle is repeated. According to the method, the positive and negative values of u (t) act on the given opening degrees of the two transverse-moving steel pushers, the purpose of dynamically correcting the deviation to achieve synchronization is achieved, the given opening degrees of the two transverse-moving steel pushers are adjusted by judging the size relation of delta 1 and delta 2, synchronous operation of the two transverse-moving steel pushers is guaranteed, and in conclusion, the synchronous driving of the two transverse-moving steel pushers can be quickly, accurately and simply controlled in real time, the influence of factors such as a signal delay coefficient and oil way pressure difference on the hot-delivery transverse-moving steel pushers is prevented, and the hot conveying rate of the heating furnace is improved.

Description

Technical field [0001] The present invention relates to the field of steel production techniques, and more particularly to a control method of thermal transmission transverse shifting machine based on dynamic correction of heating furnace. Background technique [0002] In steel production, the heating furnace is heat-transmitting the transverse steel machine is an important production equipment in the heat-welding of the servant. Since the production of self-investment, the failure rate has high, which seriously affects the thermal transport rate of the coil. After the equipment and technicians have inspected online equipment overhaul and process implementation, it was found that the two transverse push steel machines were completely independent equipment, during the operation of the equipment, because the signal delay coefficient, oil passage The influence of pressure differences, different factors such as different factors such as the factors such as the coefficient of the moti...

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Problems solved by technology

[0002] In iron and steel production, the heating furnace hot-feeding transverse pusher is an important production equipment in the continuous casting slab hot-feeding and hot-charging process. Since it was put into production, the failure rate has remained high, which seriously affects the hot-feeding rate of the continuous casting slab. After the equipment personnel and technicians inspected the online equipment maintenance and process execution, they found that the main reason was that the two horizontal steel pushing machines were completely independent equipment. Due to the influence of factors such as the pressure difference and the different friction coefficient of the moving mechanism, the two traversing steel pushers are prone to relatively large deviations during the movement process, resulting in the inclination of the steel billet;

[0003] It is a very tricky thing to have billet inclination in the hot delivery roller table during normal hot delivery and hot charging. Without intervention, this deviation will become larger and larger, and eventually the billet will not be able to fall smoothly to the recipient. The material trough even causes the billet to be stuck between the receiving chute and the lifting chain, which expands the area affected by the accident; if there is timely intervention, there are two options. The first is to stop the machine for inspection and call the crane to straighten the inclined billet , let the steel pusher equipment return to the initial position, and then execute the steel push again. Although this can solve the problem for a while, it will inevitably affect the hot delivery and hot charging, and affect the production rhythm of the rolling line; the second situation is to adjust while producing, mainly It is to adjust the hydraulic drive control parameters of the pusher, mainly to adjust the opening parameters of the proportional valve of the hydraulic oil circuit. This method is the most commonly used, because it can be adjusted while production will not cause production interruption, but the adjustment process lacks Directional and quantitative guidance is often not only not adjusted properly, but also causes the billet to incline more seriously, so that it is forced to stop and perform the operation in the first case - call the crane to straighten the inclined billet, and let the steel pusher The equipment returns to the initial position, and then pushes the steel again. Therefore, the present invention proposes a control method based on dynamic correction of the heating furnace hot-feeding and laterally moving the steel pushing machine to solve the problems in the prior art.

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