Surfacing and Additive Technologies in Welded Fabrication

lt;p>Igor Ryabtsev works in the E. O. Paton Electric Welding Institute since 1972 as a researcher and since 1997 as the head of the surfacing department.

The main areas of scientific activity are related to the study of physical and metallurgical processes of the most common surfacing methods (arc, electroslag, plasma powder, etc.), the development of new types of surfacing materials and technologies for surfacing parts operating under conditions of various types of wear, including parts metallurgical equipment: rolling rolls of various types, rollers of continuous casting machines, roller table rollers, etc. He investigates the features of inheritance and structure formation in the system surfacing material-weld pool-deposited metal with various surfacing methods. Based on these studies, the principles of controlling the structure and properties of the deposited metal for various purposes have been developed. 

Serhii Fomichov is a professor at the Institute of Materials Science and Welding at the National Technical University of Ukraine 'Igor Sikorsky Kyiv Polytechnic Institute'; the director of IIW/EWF Approved Training Body; the chairman of the Safeguarding Impartiality Committee of Bureau Veritas Ukraine; a board member of Ukrainian Association for Quality. He has long experience working on non-destructive testing and monitoring of technical condition of main gas pipelines, oil pipelines and ammonia pipelines, tanks, pressure vessels, ship trans-shippers, and wheels of hydroturbines. He was involved in development of equipment and techniques of magnetic and acoustic control NDT methods. 

Valerii Kuznetsov is  a professor of the Institute of Materials Science and Welding of the National Technical University of Ukraine 'Igor Sikorsky Kyiv Polytechnic Institute'. The main field of scientific interests is welding, surfacing, and coatings, improving and implementing welding and weld surfacing processes at aircraft manufacturing, shipbuilding, and chemical and power engineering enterprises.

1. Definition and classification of surfacing processes.- 2. Electric Arc Surfacing.- 3. Plasma surfacing.- 4. Electroslag surfacing.- 5. Gas surfacing.