Intermediate blank connecting device and system

Abstract

The invention provides an intermediate blank connecting device, which includes an outlet clamping device for clamping the front intermediate blank, an inlet clamping device for clamping the rear intermediate blank, and a connecting device for aligning the front intermediate blank and the rear blank. The friction disc connecting the end surface of the intermediate billet for friction and the upsetting device for applying upsetting force, the friction disc is located between the inlet clamping device and the outlet clamping device, and the friction disc is connected to drive the friction disc to rotate and Mobile drive mechanism. The friction disc extends between the front middle billet and the rear middle billet, and rubs the end faces of the two, so that the end face of the middle billet and the surrounding area rapidly heat up to a viscoplastic state, and the rear middle billet is subjected to a topping by an upsetting device. Forging force, after the friction disc is removed, the front block middle blank and the rear block middle blank are connected together. The invention has the advantages of simple structure, high connection strength, fast connection speed and low energy consumption, and is suitable for connection between slabs of different materials.

Description

technical field [0001] The invention belongs to the field of hot rolling equipment, and relates to a connection device and system for an intermediate billet used in the process of changing from conventional hot rolling to endless rolling in the iron and steel industry. Background technique [0002] The production of traditional strip hot continuous rolling finishing mills is carried out with a single intermediate billet for rolling, and entering the finishing mill generally goes through processes such as strip threading, accelerated rolling, decelerated rolling, steel throwing, and tail flicking. In the process of finishing rolling, especially in thin-gauge rolling, it is easy to bite into the head of the strip between the finishing stands and be blocked, forming piles of steel, slipping and tail flick folding, and tail flicking forms fold bite, resulting in damage to the roll surface etc.; during coiling, due to the serpentine shape and bending of the front end of the strip...

AI Technical Summary

Problems solved by technology

This connection method is mainly suitable for the connection of the same material because it applies pressure to the shear surface for physical connection. When different materials are connected, the strength of the connection area is also affected due to the difference in chemical composition and physical metallurgical properties. At the same time, The equipment is huge, takes up a lot of space, equipment investment and maintenance costs are high, etc.

[0009] In a word, the connection methods of intermediate blanks in the prior art all have one of the problems of large equipment investment, low connection strength of intermediate blanks, slow connection speed, not suitable for connection of dissimilar steel materials, huge equipment, and high maintenance costs. or several

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