Micro-control device for simulating electric heating field quantity changes of plates and strips

Abstract

The invention provides a micro-control device for simulating electric heating field quantity changes of plates and strips. The micro-control device comprises a plate shape simulating test platform, ahigh-current adjusting power source, a current adjusting device, a thermal imager, a thermocouple, a non-contact full-field strain measuring instrument, a high-power current control device and an electrical plastic control system. Aiming at the high-hardness crispy alloy plates and strips large in width-thickness ratio, different numbers of electrodes can be arranged in the transverse direction ofa movable supporting beam, the high-powder current control device is utilized, and sectionalized control over the electric field, thermal field and stress field of the plates and strips is achieved;meanwhile, the movable supporting beam and a tension sensor are utilized, the work conditions of the plates and strips of different lengths and widths are tested, the transient synchronous entanglement relation between different field quantities is simulated, and the electrical plastic control system is utilized for achieving intelligent closed-loop control over the specific work conditions. According to the device, a high-precision physical testing platform is provided for studying the non-uniform electrical plastic effect of the high-hardness crispy plates and strips large in width-thicknessratio in the actual rolling process, and a new efficient adjusting means is added for a traditional rolling mill system.

Description

technical field [0001] The invention belongs to the field of electroplastic rolling of special alloy plates and strips, and in particular relates to a micro-control device for simulating changes in electric heating fields of plates and strips. Background technique [0002] Rolling is a very efficient processing method, but for high-hardness and brittle alloy materials, the traditional rolling process is difficult to directly apply. In recent years, a series of theoretical research and technical research have been carried out at home and abroad on the rolling and forming of electroplastic plates such as high-strength steel, stainless steel, titanium alloys, zirconium alloys, and magnesium alloys, focusing on the electroplastic effect. In terms of mechanism and current-assisted forming, the electroplastic thermal effect and pure electrotropic effect are mainly used to reduce the flow stress by adjusting the evolution characteristics of the metal structure and the macroscopic f...

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Problems solved by technology

However, the high-speed electroplastic rolling process is extremely unstable, making it impossible for the sensor to accurately obtain the law of the power distribution parameters on the current field and temperature field.

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