The Paton Welding Journal, 2014, №06



2014 №06 (28)

DOI of Article 10.15407/tpwj2014.06.29

2014 №06 (30)

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The Paton Welding Journal, 2014, #6-7, 135-138 pages  

INVESTIGATION OF COMPOSITION AND STRUCTURE OF WELD METAL OF Kh20N9G2B TYPE MADE IN WET UNDERWATER WELDING

K.A. YUSHCHENKO, A.V. BULAT, N.Yu. KAKHOVSKY, V.I. SAMOJLENKO, S.Yu. MAKSIMOV and S.G. GRIGORENKO

E.O. Paton Electric Welding Institute, NASU. 11 Bozhenko Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
 
 
Abstract
The advantages and disadvantages of existing technologies for strengthening the contact surfaces of working blades of gas turbines applying cast rods of stellite, nickel alloy KBNKhL-2 and plates of alloy KhTN-61 were studied. The necessity of development of new wear-resistant material for strengthening the shroud platforms of working blades was grounded. Two pilot alloys on the cobalt base of Co-Si-B and Co-Si-B-Cr3C2 systems were investigated. The high temperature wear resistance of materials was evaluated. 3 Tables, 1 Figure.
 
 
Keywords: wet underwater welding, 12Kh18N10T steel, coated electrodes, weld metal, composition, structure, non-metallic inclusions
 
 
Received:                24.03.14
Published:               28.09.14
 
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