TECHNOLOGY OF PRODUCING FIBROUS STRUCTURE WIRE FROM CHIPS OF ALUMINUM–MAGNESIUM–SILICON ALLOYS

Аннотация

A technological scheme for processing the scrap of aluminum–magnesium–silicon alloy in the form of friable chips into rods and wire is introduced. This scheme is based on the powder metallurgy methods. The characteristic structure and the level of mechanical properties of the produced wire are denoted.

Полный текст

A complex composite material is implied in cases when wire is not made of compacted metal material. This material has a metal coating consisting of a hard plastic body and a powder core, which is a friable mixture of heterogeneous particles [1]. During mechanical processing, the metal coating is in a complex interaction with the powder core; this causes complex movement of the powder particles and their elastic-plastic interaction under external load. According to the suggested technology, making wire from friable fine chips (filing) of aluminum alloy АД31 and putting it into the metal coating is not accomplished. The process of making the final product can be divided into two parts: – the technological scheme of producing an intermediate workpiece for drawing, which includes the preparation of chips for compacting, briquetting, briquette heating for extrusion, and hot extrusion for the rod of a specified diameter; – the technological process of making wire consisting of multiple repeated operations of drawing the workpiece through dies and other auxiliary operations. The method of chip processing in which the quantity of secondary raw material is quite high provides a higher yield ratio of metal chips in comparison with molting.