Electroplastic equal-diameter rolling mill

Abstract

The invention discloses an electroplastic equal-diameter rolling mill. The electroplastic equal-diameter rolling mill is mainly characterized in that on the basis of a two-high rolling mill, an equal-diameter angular rolling mechanism consisting of a guiding plate and an equal-diameter angle mold and an electroplastic processing mechanism consisting of an electrical pulse interface and a power supply are added. The electroplastic equal-diameter rolling mill disclosed by the invention has the beneficial effects that the necessary preheating and hot-rolling equipment in the conventional equal-diameter angular rolling process is omitted, annealing treatment does not need to be carried out on plates after rolling, the rolling process can be carried out under the normal temperature, so that the procedure and the processing cost are greatly reduced; and continuous rolling also can be carried out, the processing process is simple and high-efficiency, not only can the effect of greatly improving the comprehensive mechanical performance of the plates after conventional equal-diameter angular rolling be obtained, but also the fussy procedure and the heavy equipment in the conventional equal-diameter angular rolling process are greatly simplified. The electroplastic equal-diameter rolling mill is suitable for carrying out rolling and performance improvement on metal materials such as magnesium alloy with low plasticity and difficult rolling and metal materials such as high-temperature alloy and high-strength steel with high strength and difficult deformation.

Description

technical field [0001] The invention relates to a two-roll rolling mill, in particular to an electroplastic equal-diameter rolling mill. Background technique [0002] Rolling is a commonly used metal plastic processing method, which is mainly used to produce profiles, plates, pipes, etc. Rolling can be divided into hot rolling and cold rolling according to whether the metal undergoes immediate softening, recovery and recrystallization during rolling. A rolling mill is the equipment that realizes the metal rolling process. [0003] Some metal materials or alloys have good properties, but usually have poor plasticity and are difficult to process through plastic deformation, such as magnesium alloys, aluminum alloys, alloy steels, titanium alloys, high-temperature alloys, etc. For example, non-ferrous light metals such as magnesium alloys have good properties such as light weight, high strength, good electromagnetic shielding, and good shock absorption. Titanium alloys have t...

AI Technical Summary

Problems solved by technology

For high-alloy materials such as high temperature resistance and wear resistance, the deformation resistance is relatively large, the tendency of work hardening and texture formation is high, and some brittle materials have basically no possibility of rolling. This is the bottleneck problem faced by contemporary rolling technology.

[0005] Equal angle rolling technology can obviously improve the comprehensive mechanical properties of sheet metal, but in actual operation, there are disadvantages of complicated procedures, high cost, and low processing efficiency, such as the equal angle rolling of a certain magnesium alloy sheet, A twin-roll hot rolling mill is required, and the magnesium alloy sheet needs to be preheated at 400°C for 5 minutes before equal-diameter angular rolling to improve the plasticity of the raw material, reduce deformation resistance and improve the internal structure of the metal to facilitate rolling. The preheating temperature and time need to be strictly controlled, otherwise it is easy to cause the internal grains of the sheet to grow and the plasticity to decrease. After the rolling is completed, the sheet needs to be recrystallized and annealed to eliminate residual stress and restore plasticity before obtaining qualified products.

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