The Paton Welding Journal, 2013, #3, 34-37 pages
NEW ELECTRODES FOR REPAIR SURFACING OF RAILWAY FROGS
I.K. POKHODNYA, I.R. YAVDOSHCHIN, N.V. SKORINA and O.I. FOLBORT
E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
Analysis of technical characteristics of TsNIIN-4 electrodes used for repair of railway frogs showed a necessity in modernization of indicated electrodes and development of new sparsely-alloyed electrodes of similar designation on a basis of low-carbon wire Sv-08. The results of work on selection of optimum composition for gas-slag-forming system of coating and system for alloying of deposited metal as well as technical characteristics of modified electrodes TsNIIN-4M and new sparsely-alloyed electrodes ANN-10 are represented. Technical and economical advantages of new electrodes in comparison with TsNIIN-4 electrodes are shown. Specifications for TsNIIN-4M and ANN-10 grade electrodes were developed, agreed and registered in the «Ukrmetrteststandart» and technological process of their industrial production was created. Results of work on production of pilot-industrial batches of new electrodes and their testing are stated. Development of modern ANN-10 and TsNIIN-4M electrodes allows refusing from application of expensive high-alloy wire Sv-10Kh14G14N4T that reduces a prime cost of the electrodes and increases their competitiveness in the market of welding consumables. 6 Tables, 1 Figure.
electrodes, arc surfacing, railway frog, hardness of deposited metal