Establishment of erosion model of gun steel material and study on its erosion performance

During the firing of the artillery, the high temperature and high pressure gas generated by the combustion of the gunpowder directly acts on the inner surface of the barrel. The oxidizing gas contained in the combustion products is thermochemically reacted with the gun steel material, causing the lo...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2020, 34(5), , pp.2019-2026
Main Authors: Zou, Libo, Yu, Cungui, Feng, Guangbin, Zhong, Jianlin, Lv, Yan
Format: Article
Language:English
Subjects:
Combustion products
Conduction heating
Conductive heat transfer
Control
Density
Dynamical Systems
Engineering
Firearms
Heat conductivity
High temperature
Industrial and Production Engineering
Mechanical Engineering
Original Article
Oxidation
Specific heat
Steels
Thermal conductivity
Thermophysical properties
Vibration
기계공학
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Summary:During the firing of the artillery, the high temperature and high pressure gas generated by the combustion of the gunpowder directly acts on the inner surface of the barrel. The oxidizing gas contained in the combustion products is thermochemically reacted with the gun steel material, causing the loss of surface material inside the bore. Thermochemical erosion of bore is one of the main factors affecting the life of the barrel. In order to be able to predict the amount of erosion produced by thermochemical erosion and to study the effects of thermophysical properties of gun steel materials on erosion. Based on Fourier heat conduction theory, a theoretical model of thermochemical erosion of gun steel materials was established. The semi-closed vessel test was designed to verify the theoretical model. The calculation results are in good agreement with the test results. At the same time, this paper also researched the influence of density, thermal conductivity and specific heat capacity of a gun steel material on material erosion based on the theoretical model. The research shows that with the increase of the density and specific heat capacity of the gun steel material, the erosion amount of the material increases correspondingly; as the thermal conductivity of the gun steel material increases, the erosion amount decreases accordingly. The research of this paper provides a certain theoretical basis for predicting the life of the barrel, and provides a certain guiding significance for the research of gun steel materials.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-020-0423-x