Optimization of the tungsten inert gas welding parameters of mild steel thin sheets through the gray relational analysis method

Rahui, Amine; Allouch, Malika; Alami, Mohammed

doi:10.1007/s00170-024-13984-z

Int J Adv Manuf Technol

2024

DOI: 10.1007/s00170-024-13984-z

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Optimization of the tungsten inert gas welding parameters of mild steel thin sheets through the gray relational analysis method

Amine Rahui,

Malika Allouch,

Mohammed Alami

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Study on the Influence Mechanism of the Key Active Structure of Coal Molecules on Spontaneous Combustion Characteristics Based on Extraction Technology

Guo,

Wu,

Liu

et al. 2024

Fire

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The molecular structure of coal is complex, and the existing research methods are limited, so it is difficult to clarify its influence mechanism on the spontaneous-combustion characteristics of coal. In this paper, the previous extraction, FTIR, TPR, TG-DSC and other experimental results are combined to analyze the extraction weakening effect and the correlation analysis of the spontaneous-combustion characteristic parameters of raffinate coal. The results show that extraction can destroy the connection bond of coal molecules, change the content of dominant active groups in the coal spontaneous-combustion reaction, increase the lower limit of the key temperature nodes of coal spontaneous-combustion or extend the temperature range, resulting in an increase in the ignition-point temperature of coal and a decrease in coal quality. This paper will provide a theoretical basis for the study of the microscopic mechanism of coal spontaneous-combustion and then provide new ideas for the development of an active prevention and control technology for coal spontaneous-combustion.

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Study on the Influence Mechanism of the Key Active Structure of Coal Molecules on Spontaneous Combustion Characteristics Based on Extraction Technology

Guo,

Wu,

Liu

et al. 2024

Fire

View full text Add to dashboard Cite

show abstract

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Optimization of the tungsten inert gas welding parameters of mild steel thin sheets through the gray relational analysis method

Cited by 1 publication

References 53 publications

Study on the Influence Mechanism of the Key Active Structure of Coal Molecules on Spontaneous Combustion Characteristics Based on Extraction Technology

Study on the Influence Mechanism of the Key Active Structure of Coal Molecules on Spontaneous Combustion Characteristics Based on Extraction Technology

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