A micro-control device for simulating the change of the electric heating field of the plate and strip

Abstract

The present invention proposes a micro-control device for simulating the change of the electric heating field of the plate and strip, which includes a plate shape simulation test platform, a large current regulating power supply, a current regulating device, a thermal imager, a thermocouple, and a non-contact full-field strain measuring instrument , high-power current control device and electric plastic control system; for high-hardness and brittle alloy plates and strips with large aspect ratio, different numbers of electrodes are arranged laterally along the movable support beam, and the high-power current control device is used to realize the electric field and heat of the plate and strip. Field and stress field are sub-regionally controlled; at the same time, use movable support beams and tension sensors to realize the working condition test of plates and strips with different lengths and widths, simulate the transient synchronous entanglement relationship between different field quantities, and use electroplastic The control system realizes the intelligent closed-loop control of specific working conditions. The device provides a high-precision physical test platform for studying the non-uniform electroplastic effect of high-width-thick-ratio high-hardness and brittle strips in the actual rolling process, and adds a new high-efficiency adjustment method to the 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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