A preparation method of Ti35 titanium alloy strip

Through multi-fire hot rolling, cold rolling and recrystallization annealing processes, the problems of uneven strength and plasticity of Ti35 titanium alloy strips were solved during the preparation process, and high-performance titanium alloy strips that meet the requirements of winding pads were prepared, which improved the service life of the equipment and corrosion resistance.

CN119392142BActive Publication Date: 2025-07-04XIAN RARE METAL MATERIALS RES INST CO LTD
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Patent Information

Application Number
CN202510012050.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-01-06
Publication Date
2025-07-04
Estimated Expiration
2045-01-06

AI Technical Summary

Technical Problem

During the preparation process of the existing Ti35 titanium alloy strip, the strength and plasticity index of the winding pad are not met at the same time, and the existence of Ta elements makes the alloy structure and performance sensitive to process factors, resulting in unstable product quality.

Method used

The preparation process of multi-fire hot rolling + multiple cold rolling + recrystallization annealing is adopted. By controlling the parameters of hot rolling, cold rolling and annealing, the synchronization and uniformity of the flow of the surface and internal metals of the titanium alloy material are ensured, forming a uniform grain distribution, and improving strength and plasticity.

Benefits of technology

Prepare Ti35 titanium alloy strips with uniform tissue, good strength and plasticity matching to meet the requirements of winding pads, extend the service life of the equipment, reduce maintenance costs, and improve corrosion resistance.

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Abstract

The present invention discloses a method for preparing a Ti35 titanium alloy strip, which method comprises the following steps: Step 1, heating a Ti35 titanium alloy slab to a temperature below the phase transition point, performing multi-pass hot rolling and annealing, and then air cooling to obtain a hot-rolled slab; Step 2, after shot blasting, pickling and surface grinding of the hot-rolled slab, performing first cold rolling and vacuum annealing to obtain a cold-rolled blank; Step 3, performing second cold rolling on the cold-rolled blank to obtain a titanium alloy strip coil; Step 4, performing recrystallization annealing on the titanium alloy strip coil to obtain a high-plasticity titanium alloy strip. The method of the present invention can ensure the synchronism and uniformity of the metal flow on the surface and inside of the titanium alloy material by adopting a preparation process of multi-pass hot rolling + multi-pass cold rolling + recrystallization annealing, thereby making the grain distribution and size of the Ti35 titanium alloy strip uniform, improving both strength and plasticity simultaneously, meeting the preparation and use requirements of gaskets, and being suitable for the technical field of titanium alloy material processing.
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