IDEA #7XOPEV THE TECHNOLOGY OF PRODUCTION OF POWDER DETAILS FROM COPPER SCRAP

NEW MATERIALS AND NANOTECHNOLOGY THE TECHNOLOGY OF PRODUCTION OF POWDER DETAILS FROM COPPER SCRAP Description New energy saving technology for recycling copper scrap from electrical conductors’ to Powder Metallurgy products. Innovative Aspect and Main Advantages: New recycling technology has following main advantages in compare with conventional recycling technologies: - Electric power saving by elimination of power- consuming electrolytic refinement; scrap - Contraction number of manufacturing operations by elimination of several operations with high labour content: remelting, casting of anodes, electrolytic refinement and remelting of cathode copper; - Cutting down the duration of scrap-to-copper remaking; - Significant reduction of the environmental pollution; - Higher quality of products obtained by powder metallurgy technologies. The technology consists of two main stages: Preparatory stage: sorting of the scrap, elimination of extraneous inclusions of different metallic and non- metallic materials, annealing in the synthesis gas medium, fragmentation of the scrap, air separation Final stage (including four variants): Variant I: grinding fibers into powder, annealing in the synthesis gas Variant II: briquetting of fibers, processing of briquettes into preformed materials (sheets, strips, tubes) by metal forming. Variant III: pressing of fibrous charge into porous fibrous billets with following hot extrusion of billets into rods at high hydrostatic pressure conditions and annealing for homogenization of structure. Variant IV: pressing of fibrous charge into porous fibrous billets with following cold extrusion into tube and cutting machining for production of details «welding tip». Areas of Application: Powder Metallurgy, Electrical industry, Machine-building industry, Aerospace industry. synthesis-gas medium into the Fig. 2 Machine-building details with density up to 8500-8700 kg/m3 manufactured from copper powder, produced by recycling of copper scrap from electrical conductors Fig. 3 Copper rods obtained from fibrous pressings Patented (Patents of Ukraine: # 47841А, # 64966А) Fig. 4 Photos of details «welding tip» Stage of Development: - - Tested, available for demonstration, field tested Contact Details: Organization: East-Ukrainian Volodymir Dal National University Address: Molodiozhny block, 20A, Lugansk, 91034, Ukraine Contact person: Prof. Dr.-Ing. Lyudmila Ryabicheva Telephone: +38 0642 500728, +38 050 5936239 Fax: +38 0642 413160 E-mail : material@snu.edu.ua , ryabic@gmail.com Web-site: http://snu.edu.ua Fig. 1 Unsorted copper scrap consist of insulated and not insulated electrical conductors