Mathematical Analysis of the Influence of the Flux-Cored Wire Chemical Composition on the Electrical Parameters and Quality in the Underwater Wet Cutting

The paper presents research in the field of underwater wet cutting with the use of flux-cored wires in order to improve the quality and performance. The research has resulted into the development of gas and slag systems for flux-cored wires and determination of, optimal parameters for cutting stabil...

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Bibliographic Details
Published in:Advances in materials science 2021-03, Vol.21 (1), p.77-89
Main Authors: Parshin, S., Levchenko, A., Wang, P., Maystro, A.
Format: Article
Language:English
Subjects:
Chemical composition
Control algorithms
Density
Efficiency
Electric potential
Flux cored wires
flux-cored wire
Keyholes
Materials science
Mathematical analysis
Metallurgy
Parameters
Short circuits
Stability analysis
Steel
Underwater
Underwater pipelines
underwater wet cutting
Voltage
Welding current
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Summary:The paper presents research in the field of underwater wet cutting with the use of flux-cored wires in order to improve the quality and performance. The research has resulted into the development of gas and slag systems for flux-cored wires and determination of, optimal parameters for cutting stability and quality. The underwater wet cutting mechanism is a cyclical process with the formation of periodic keyholes in metal, and it consists of operating and idle cycles. Efficiency of the cutting process can be determined by analyzing cycle times, welding current, voltage, power and a number of short circuits. To assess the stability and efficiency of the underwater wet cutting process, the authors have developed the method for analyzing oscillograms to calculate the probability density of current, voltage and power. To determine the quality of cutting, the authors have provided a criterion based on the ratio of the voltage probability density in the idle and operating cycles.
ISSN:2083-4799
1730-2439
2083-4799
DOI:10.2478/adms-2021-0006