Review and Prospect of Life Extension Technology for Gun Barrels

doi:10.12382/bgxb.2021.0787

Abstract

Abstract:

The challenge of extending barrel life has restricted the improvement of the performance and combat effectiveness of guns for a long time. Therefore, extending the service life of gun barrels has become the urgent need for modernization and future battlefields. First, the main factors affecting gun barrel life are summarized. Then the domestic and foreign technical methods for barrel service life extension are introduced, including propellant improvement, surface treatment of the barrel bore, optimization of projectile and rifling design, gun steel improvement, and anti-ablation technology based on magnetron plasma. Moreover, research progress of relevant technologies at home and abroad is summarized, and the shortcomings in these technical fields in China are analyzed. Finally, this study gives the prospects of the future development direction in the field of barrel life extension from the aspects of clarifying the ablation and wear laws of the barrel bore, selecting feasible life extension methods, and taking multiple measures to conduct key research, and exploring and developing the anti-ablation technology based on magnetron plasma. This study provides ideas for the development of conventional barrel life extension technology and insights into new life extension technologies, thus improving the combat effectiveness of weapons.

Key words: gun barrel, factors affecting gun barrel life, life extension technology, magnetron plasma

MAO Baoquan, ZHAO Qijin, BAI Xianghua, WANG Zhiqian, ZHU Rui, CHEN Chunlin. Review and Prospect of Life Extension Technology for Gun Barrels[J]. Acta Armamentarii, 2023, 44(3): 638-654.

Figures/Tables 20

Fig. 1 Main measures to prolong gun barrel life

Fig. 2 Schematic diagram of thermal-chemical-mechanical ablation and wear mechanisms[9]

Fig. 3 Structure diagram of plugged and insensitive gun propellants[46]

Fig. 4 Morphology of ablation test pieces after ignition[51]

Fig. 5 Schematic diagram of MSE process of Ta[58]

Fig. 6 Schematic diagram of laser cladding technology[60]

Fig. 7 Schematic diagram of plasma cladding technology[61]

Fig. 8 Schematic diagram of coating preparation of a gun barrel by wire explosion spraying

Fig. 9 Schematic diagram of plasma spraying technology[71]

Fig. 10 Schematic diagram of magnetron sputtering technology[82]

Fig. 11 Cylindrical magnetron sputtering equipment for gun barrels[84]

Fig. 12 Schematic diagram of laser quenching and strengthening process[97]

Fig. 13 Comparison of two kinds of rotating band after wear[101]

Fig. 14 Working principle of electroslag remelting[115]

Fig. 15 Solution results of electrical conductivity of plasma generated by gunpowder combustion[124]

Fig. 16 Open combustion apparatus[125]

Fig. 17 Closed bomb combustion apparatus[126]

Fig. 18 Velocity distribution of the magnetic fluid at the outlet section of the cylinder[121]

Fig. 19 Turbulence kinetic energy distribution of the magnetic fluid at the outlet section of the cylinder[133]

Fig. 20 Temperature distribution of the outer wall of the quartz tube[132]

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