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2017 №02 (09) DOI of Article
10.15407/as2017.02.01 		2017 №02 (02)

Automatic Welding 2017 №02


Avtomaticheskaya Svarka (Automatic Welding), #2, 2017, pp. 3-7
 

Effect of energy parameters of microplasma powder surfacing modes on susceptibility of nickel alloy ZhS32 to crack formation

K.A. Yushchenko, A.V. Yarovitsyn and N.O. Chervyakov


E.O. Paton Electric Welding Institute, NASU 11 Kazimir Malevich Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua  
Abstract
Presented is a technological experience of the E.O. Paton Electric Welding Institute in area of development of surfacing technologies for serial repair of blade flanges of aircraft GTE of nickel heat-resistant alloys ZhS26 and ZhS32 with oriented crystallization based on microplasma powder surfacing. It is shown that heat input value in a single-layer or multilayer surfacing using up to 40 A welding current can uniquely determine susceptibility to crack formation in «base–deposited metal» joints. A range of values of total heat input was determined. They can be used to predict absence or presence of cracks (hot or reheating cracks) with high probability. 18 Ref., 7 Figures.
 
Keywords: nickel heat-resistant alloys, microplasma powder surfacing, weldability, crack formation susceptibility, effective heat power of arc, heat input, total heat input
 
 
Received: 01.08.17
Published: 16.03.17
 
 
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