Processing method for high-purity titanium sheet for coating titanium anode base material

Abstract

Provided is a processing method for a high-purity titanium sheet for a coating titanium anode base material. O-stage sponge titanium with the average particle size being 3-25.4 mm is placed in an electron beam cold hearth and melted in a vacuum state so that a high-purity titanium slab can be obtained through purification; a hot coil which is 2.5-5 mm thick is manufactured through rolling of a steckel mill, and annealing is performed; shot blasting and pickling treatment need to be performed after annealing; the hot coil is placed on a reversible cold rolling machine to be subjected to many times of rolling; finally, a cold coil which is 0.5-2 mm thick can be obtained; the deformation rate is controlled to be 40-60% during each time of rolling; then the cold coil is subjected to degreasing treatment; then complete recrystallization annealing is performed in the vacuum state or the argon protection state, wherein the annealing temperature is controlled to be 600-720 DEG C and a titanium coil is obtained. As is detected, the average grain size of the titanium is controlled to be 15-30 microns, and the high-purity titanium sheet for the coating titanium anode base material is obtained after the titanium coil is straightened. The unevenness of the high-purity titanium sheet is smaller than or equal to 3 mm / m, and no strip-shaped flow direction lines exist after the high-purity titanium sheet is used as a coating.

Description

technical field

[0001] The invention belongs to the technical field of processing rare metal materials, and in particular relates to a processing method for a high-purity titanium thin plate for a coated titanium anode. Background technique

[0002] Coated titanium anodes are mainly used in two sectors of electrochemistry and electrometallurgy. In the electrochemical process, titanium anode has good corrosion resistance, high catalytic activity, and can maintain the stability of size and shape in the electrolysis process. It has been widely used in electroplating, wastewater treatment, organic electrosynthesis, cathodic protection and Chlor-alkali industry and other fields.

[0003] The substrate of coated titanium anode is generally pure titanium, and the purity of the material is required to reach at least TA1 standard. If the purity of the substrate used is not enough, the corrosion resistance will be greatly reduced, and the service life of the anode will also be greatl...