Continuous and repeated bending-bending extrusion cycle remanufacturing method for waste titanium alloy chips

Abstract

The invention relates to the technical field of metal material processing. According to the technical scheme, a continuous and repeated curving-bending extrusion cyclic remanufacturing method for waste titanium alloy chips comprises the following steps of S1, solidification of the waste titanium alloy chips; S2, bag packaging and indoor-temperature cold rolling of the waste titanium alloy chips; S3, continuous and repeated curving-bending combined deformation and solidification; and S4, annealing heat treatment of remanufactured titanium alloy strips. By adoption of the continuous and repeatedcurving-bending extrusion cyclic remanufacturing method for the waste titanium alloy chips, effective cyclic solidification of the waste titanium alloy chips can be achieved, the regenerative ultrafine grain titanium alloy strips with uniform tissue can be prepared rapidly, and the continuous and repeated curving-bending extrusion cyclic remanufacturing method is an efficient and clean metal resource solid-phase cyclic treatment technique and is suitable for recycling and remanufacturing of high-smelting-cost metal resources such as titanium alloy.

Description

technical field [0001] The invention relates to the technical field of metal material processing, in particular to a continuous repeated bending-bending extrusion cycle remanufacturing method for solidification treatment of waste titanium alloy chips. Background technique [0002] The most commonly used technologies for the recycling of waste metal chips are remelting and casting. However, high-temperature melting and casting consumes a lot of energy, causes heavy pollution, and has low efficiency. The cast structure has coarse grains and poor mechanical properties. In order to avoid high temperature melting and casting, the solid phase recovery method can be used. However, titanium alloy (Ti-6Al-4V) is an active metal that is easy to oxidize, and the oxide on the chip surface is TiO 2 TiO2 has a tough texture. Although it can be broken to a certain extent after multi-pass equal channel angular extrusion curing, there are still many oxides with large sizes and continuous d...

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Problems solved by technology

[0005] The purpose of the present invention is to develop an environmentally friendly continuous repeated bending-bending combined deformation cycle remanufacturing technology for titanium alloy resources with high smelting costs based on the concept of solid phase remanufacturing, so as to overcome the existing problems of the existing technology. The above shortcomings, improve processing efficiency, prepare fully densified large-size bulk titanium alloy recycled strips, realize efficient, clean recycling and reuse of waste titanium alloy chips, and thus propose a continuous and repeated bending of titanium alloy chips cyclic solidification- Bending extrusion remanufacturing method

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