New technologies for processing titanium alloy shaving waste without metal remelting to produce finished products

Abstract

This article analyzes the results of research on the development of technology for processing waste shavings of various groups of titanium alloys without remelting the metal into finished products with a compact material structure and rather high-strength characteristics. The proposed chip processing technology includes several operations: shaving cleaning, magnetic separation, hydrogen plasticization, two-stage briquetting with a conical and flat punch, degassing of the briquette capsule shell, shell sealing, thermocompression processing of the briquette in a capsule shell, extrusion of the briquette together with the capsule, and mechanical treatment. The aspects of shaving briquetting obtained during the mechanical processing of titanium alloys are studied, and the features of the formation of briquettes using various briquetting methods are analyzed. The most rational methods for briquetting titanium alloy shavings are determined, ensuring the most efficient processing of the compacted material and the maximum density of the formed briquettes. Hydrogen plasticization of titanium shavings not only promotes more intense compaction of the porous briquette material but also promotes the formation of additional sites of solid-phase bonding in the presence of compressive stresses and shear deformations. The effect of the use of punches with a conical working surface during the consolidation of shaving material in the process of cold briquetting is studied.