Titanium strip rolling method for hot continuous strip steel production line

Abstract

The invention discloses a titanium strip rolling method used in a hot strip rolling production line, which comprises: adopting a 1+3 rolling mode in the rough rolling area, and rolling a titanium billet into a titanium strip billet by hot rolling; Heat preservation and temperature uniformity of the titanium strip before rolling; roll pressure control of the finished product front stands F1, F2 and F3, and finish rolling after rolling the oxide film on the finish rolling work rolls; the finish rolling process In the process, the titanium strip blank is directional cooled, and the finishing mill is thrown and rolled according to the rolling thickness. The invention solves the problems of titanium and titanium by improving the titanium strip rolling process in the hot continuous strip steel production line, utilizing rough rolling high-speed warm-up rolling, temperature uniform technology and controlling the roll pressure and roll surface roughness. The technical problem of buckle warping in the alloy rolling process improves the stability of titanium and titanium alloy rolling, realizes the high-efficiency production of steel-titanium collinear, and reduces the scrap rate of buckle warping in the finish rolling from the previous 5.70%. to 0.20%, and the process yield increased from the previous 93.60% to over 97.00%.

Description

technical field [0001] The invention relates to the technical field of hot continuous rolling and rolling technology, in particular to a titanium strip rolling method used in a hot continuous rolling strip steel production line. Background technique [0002] Titanium is a rare and precious non-ferrous metal, known as the "third metal" or "all-round metal". It has a series of excellent properties such as light weight, high strength, corrosion resistance, heat resistance, non-magnetic and low temperature resistance, and is widely used in the defense industry As well as civilian industries such as petroleum, chemical industry, metallurgy, electric power, transportation, medical treatment, marine, environmental protection, construction, sports, tourism and leisure, it is also known as "the metal of the future". At present, the production of titanium plates usually adopts the mode of reciprocating rolling. Under this production mode, there are disadvantages such as low unit opera...

AI Technical Summary

Problems solved by technology

The warped buckle of the finish rolling leads to a high scrap rate of more than 5.0% in hot continuous rolling of titanium and titanium alloy coils, and a low process yield of less than 92%, which seriously restricts the production efficiency of hot continuous rolling of large and heavy titanium coils

[0004] Because titanium and titanium alloys are highly sensitive to thermal processing, including the temperature and temperature uniformity of the rolled piece, the surface condition of the rolled piece, the reduction rate of the frame, the rolling speed, the friction coefficient and other process conditions, especially titanium and titanium alloys. Titanium alloys have good high-temperature plasticity. Compared with conventional steel products, titanium and titanium alloys have larger elongation and widening deformation during hot rolling, and are very sensitive to deformation conditions and condition changes. The upper and lower positions of the part are bent, which affects the rolling stability