A control method of automatic pressure head for aluminum hot rolling rough rolling

Abstract

The invention relates to an aluminum hot rolling and rough rolling head pressing technology and an automatic head pressing control method. According to the site production conditions that when rolling is conducted on a heavy shearing pass, the head of a blank is seriously opened; a roller bed between a rough mill and a finishing mill is short; and when five-system aluminum alloy is rolled, the head rises seriously in the pass which is conducted after the heavy shearing pass, the control method that automatic head pressing is conducted on the heavy shearing pass, the end pass and the pass (not containing the end pass) which is conducted after the heavy shearing pass when the five-system aluminum alloy is rolled is provided. According to the aluminum hot rolling and rough rolling automatic head pressing control method, by controlling head pressing automatically, impact of the head of the blank on equipment is reduced, successful biting of the finishing mill is ensured, the risk that the blank is wound when the five-system aluminum alloy is rolled is reduced, and guarantee is supplied to successful operation of the whole production line.

Description

Technical field: [0001] The invention relates to metallurgical automation and non-ferrous metal rolling technology, in particular to a method for controlling an automatic pressure head for aluminum hot rolling and rough rolling. Background technique: [0002] In aluminum hot rolling production, rough rolling is in the rolling process, due to the thick billet, such as figure 1 As shown in middle a, the extension of the upper and lower surfaces is larger than the middle part, so there will be mouth opening phenomenon at the head and tail of the billet, such as figure 1 As shown in middle b, as the number of passes increases, the mouth opening phenomenon will become more and more serious. When the thickness reaches about 100cm, such as figure 1 As shown in c, the head and tail need to be cut off. If it is allowed to open its mouth to cut the head and tail, it will cause a great impact on the roller table when it runs on the roller table. [0003] When the 5-series aluminum a...

AI Technical Summary

Problems solved by technology

If you let it open its mouth to cut the head and tail, it will cause a lot of impact on the roller table when it runs on the roller table

[0003] When the 5-series aluminum alloy is rolled in several passes after cutting the head and tail with scissors, due to the thinning of the billet, it is very easy to have head warping. If it is not handled in time, the risk of roll entanglement is very easy to occur

[0004] The distance between the finishing mill and the roughing mill in a hot rolling aluminum plant is short, and the roll neck of the finishing mill is small. If the thickness of the intermediate billet after rough rolling is too thick, F1 is not easy to bite in. If the thickness of the intermediate billet is If the aluminum ingot is relatively large, the billet head has reached the finishing mill before the end of the rough rolling pass, which affects the rolling rhythm and is not safe.

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