The Paton Welding Journal, 2015, №06



2015 №06 (23)

DOI of Article 10.15407/tpwj2015.06.24

2015 №06 (25)

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The Paton Welding Journal, 2015, #5-6, 107-111 pages  

Peculiarities of technology of manufacture and application of flux-cored strips for surfacing

A.P. Voronchuk, A.P. Zhudra, V.O. Kochura, A.V. Petrov And V.V. Fedosenko

E.O. Paton Electric Welding Institute, NASU. 11 Bozhenko Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
 
 
Abstract
The paper deals with the problems of homogeneity of flux-cored strip charge at its mixing in double-cone mixers. Optimum mixing time for mixers of different volume was determined experimentally. Equipment for manufacturing flux-cored strips was optimized and a new design of withdrawal-roll set using pressure sensors was developed, that allows determination and adjustment of press-down force of withdrawal rolls of the mill. The paper gives the results of studying the influence of the degree of charge compaction on welding-technological properties of flux-cored strips. It is found that increase degree of compaction leads to a noticeable increase of the coefficient of electrode material melting. Insufficient or excessive degree of compaction adversely affects the welding-technological properties of flux-cored strips - spattering is increased and process stability deteriorates. 4 Ref., 1 Table, 7 Figures.
 
 
Keywords: surfacing, flux-cored strip, charge, mixer, mixing, homogeneity, complex-alloyed powders, degree of compaction, spattering
 
 
Received:                20.03.15
Published:               28.07.15
 
 
References
1. Zhudra, A.P., Voronchuk, A.P. (2012) Cladding flux-cored strips (Review). The Paton Welding J., 1, 34-38.
2. Kaufman, J.J. et al. Ultrasonic bone-therapy apparatus and method. Pat. 5547459 U.S. Publ. Aug. 20, 1996.
3. Ashton, M.D., Valentin, F.H. (1986) The mixing of powders and particles in industrial mixers. Transact. of Inst. Chem. Engrs., 44(5), 166-169.
4. Zhudra, A.P., Krivchikov, S.Yu., Dzykovich, V.I. (2014) Application of complex-alloyed powders produced by thermocentrifugal sputtering in flux-cored wires. The Paton Welding J., 12, 36-40. https://doi.org/10.15407/tpwj2014.12.08

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