IDEA #4MRCHC Structuring Of Surfaces Of Metal Parts

APPLIED RESEARCH • PLASMAPHYSICS AND TECHNOLOGY STRUCTURING OOFF SURFACES OOFF METAL PARTS TECHNOLOGY AND EQUIPMENT Description Areas ooff Application Structuring of surfaces of metal parts is performed with the electric current commutated by the pulsed plasma. Alloying elements (ions and vapors of metals) are added to plasma and participate in a micro metallurgical process occur(cid:2) ring on the molten surface of a part. Heat capacity of metal of the part provides the high rates of cooling and solidification of the melt. Cycling of the melting and solidification process under condi(cid:2) tions of pulsed physical fields provides stirring and crystallisa(cid:2) tion of alloy to form nano(cid:2) and microcrystalline structures. Innovative Aspect and Main Advantages The technology is implemented using ingenious accelerators of alloying elements (Fig. 1), which are based on development of the non(cid:2)stationary processes of detonation of combustible gas mix(cid:2) tures in the electric field. The technology developed is aimed at hardening of working surfaces of tools for metal, wood, plastics, paper, rubber, syn(cid:2) thetic material cutting, for saws for wood(cid:2)shavings and lay(cid:2) ered plastics, dies for cold and hot pressing, moulds, etc. as well as for sites of machines, engines, compressors, hydraulic drives, hydraulics, aviation and automobile technique. Performance of the wood and metal processing tools increased after the treatment by a factor of 3 to 6. State(cid:2)(cid:2)ooff(cid:2)(cid:2)the(cid:2)(cid:2)art.. Application of the technology improves phys(cid:2) ical(cid:2)operating properties of the surface layer and, therefore, performance of metallic micro(cid:2) and macro(cid:2)parts working under wear and complex stress conditions, as well as metal, wood, plastics, vegetable food and soil processing tools. Future prospects.. A layer of high(cid:2)alloy nano(cid:2)microstructured alloy is formed on the surface of parts (See Fig.3). The layer will provide workability, accuracy and performance of micro tools and parts of micro machines formed by engraving using laser or electric discharge technologies. The surface is treated with the pulsed, electric, magnetic, acoustic and e l a s t i c (cid:2) d e f o r m a t i o n fields, thus enhancing the “abnormal” heat and mass transfer processes and providing formation of new materials and alloys with a nano(cid:2) microstructure the surface layer of (Fig. 2). in Fig.1. Automated equipment with accelerator of alloying elements The structuring process applied for structuring of surfaces of leads to a multiple metal parts. increase in hardness and friction, corrosion and erosion resistance of the surface layer of the part (Fig.3). Fig. 2. Structured layer on the surface of steel (x500) Fig. 3. Structured layer on the surface of: a) steel 7KhNM; b) steel U8; v) cast iron; g) titanium VT(cid:2)1. Stage ooff Development The technology and equipment are covered by the patents of Europe, Russia and Ukraine, and are commercially applied for structuring of the working surface of tools and machine parts. Contact Details TYURIN Yuri E.O.Paton Electric Welding Institute NASU Tel.: (38 044) 289 09 14 Fax: (38 044) 271 20 34 E(cid:2)mail: ytyurin@i.com.ua http://www.i.com.ua/~ytyurin INNOVATIVETECHNOLOGY OPPORTUNITIES FROM THE STCU 41