Quick connection die and method for hot rolled strip intermediate billets

Abstract

The invention provides a quick connection die and method for hot rolled strip intermediate billets. The die comprises an upper die and a lower die, wherein the upper die and the lower die are meshed with each other, a plurality of columnar teeth are arranged on the meshing face of the upper die, and a plurality of columnar teeth are arranged on the meshing face of the lower die. The method comprises the steps that first, the head and the tail of each intermediate billet which is processed through rough rolling are cut flat with a shears, so that each intermediate billet has a flat head end face and a flat tail end face; then, the adjacent ends of two adjacent intermediate billets in the front and rear direction are made to be flushed with each other to form a lap joint area; at last, pressure plastic deformation connection is carried out on the lap joint area of the intermediate billets through a press and the die on the press, and therefore, the lap joint area of the two intermediate billets in the front and rear direction is in connection through severe plastic deformation engagement. According to the quick connection die and method for hot rolled strip intermediate billets, process equipment is simple, the intermediate billets can be quickly connected, and the pressed intermediate billets are connected with high strenght.

Description

technical field [0001] The invention relates to the technical field of material forming, in particular to a quick-connecting die and method for a hot-rolled steel strip intermediate billet. Background technique [0002] Hot-rolled strip endless rolling technology is one of the most advanced technologies in steel production in the world at present. It can connect several rough-rolled intermediate billets, and the connected intermediate billets continuously enter the finishing rolling unit, and the finishing rolling unit Continuous and stable rolling, and stable cooling and phase transformation control by the laminar cooling line, and finally sheared by flying shears and coiled into multiple hot-rolled strip coils by the coiler. Compared with conventional rolling, endless rolling can significantly improve production efficiency and yield, and ensure that multiple coils have extremely high dimensional and shape accuracy and uniform microstructure and performance, and will also s...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a quick connection die and method for hot-rolled strip intermediate blanks with simple process equipment, high connection strength, fast connection speed, and wide application range, so as to solve the problems existing in the prior art. Connecting equipment has problems such as small application range, low strength, large equipment investment and maintenance costs, etc.

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