Titanium blank rough rolling method of ordinary hot rolling mill

Abstract

The invention relates to a titanium blank rough rolling method of an ordinary hot rolling mill, which can effectively ensure the quality of rough rolled intermediate titanium blanks. In the method, titanium blanks with the thicknesses H of 100-200mm are rough rolled, and before rough rolling is performed, a rough rolling technology of the titanium blanks is firstly determined according to the thickness H of the titanium blank, the technology includes rough rolling passes N, and the rolling openness and rolling reduction of each pass, and in the rolling process, the rolling openness of the rolling mill of each pass keeps constant. The method can keep the quality of the intermediate titanium blanks stable, and makes the shape of the intermediate titanium blank similar to a rectangle, and the shapes of the head part and the tail part similar to a sled.

Description

technical field [0001] The invention relates to a method for rough rolling a titanium billet with a common hot continuous rolling mill. Background technique [0002] In the process of producing titanium strips using ordinary hot continuous rolling mills, it is first necessary to rough-roll the titanium billet to form an intermediate titanium billet with a predetermined thickness, and then roll the intermediate titanium billet into the required titanium strip through finish rolling. In the rough rolling process, it is necessary to formulate the rolling passes specific to the thickness of the titanium billet according to the thickness of the titanium billet and the reduction opening of each pass (the roll gap value of the ordinary hot continuous rolling mill). Using the above rough rolling method, The rolling passes of titanium billets of different thicknesses in the rough rolling process and the reduction opening of each pass are different, which leads to the need to continuo...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent 200910229999.6 discloses a method for producing titanium strips using a conventional hot continuous rolling group. In this method, a titanium billet of 150 to 250 mm is heated, rough rolled, and finished rolled and coiled into a titanium coil. According to this method, titanium The above-mentioned problems will still be encountered when the billet is rough rolled, that is, it is difficult to control the shape of the intermediate titanium billet and the buckle warping during the rolling process, which makes it difficult to guarantee the quality of the final finished titanium strip