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| Erosion Mechanisms and Life Improvement Techniques of Large Calibre Gun Barrel |
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| DOI：10.7643/issn.1672-9242.2022.07.002 |
| KeyWord:gun barrel life damage erosion gun propellant gun steel coating |
| Author | Institution |
| FU Jia-wei |
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing , China |
| LI Yan-ze |
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing , China |
| CHEN Shi-yu |
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing , China |
| WANG Hao-yu |
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing , China |
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| Abstract: |
| The “thermal-mechanical-chemical” factors and their coupling effects on the damage of the barrel are summarized in this paper. The main mechanisms of the barrel damage are proposed, and the research progress on barrel damage at home and abroad is briefly introduced. According to these damage mechanisms, three kinds of techniques, namely, anti-erosion from propellant gas, anti-wear from rotating band, and simultaneous anti-erosion and anti-wear, are proposed to improve the barrel life. Moreover, the typical methods in the said three kinds are described, including new propellant with high energy and low detonation temperature, anti-erosion additives, gun steel with high strength at high temperature, matching design of projectile and gun, anti-erosion coatings, etc. As a result, this paper can serve as a reference for the investigation of fundamental theories of barrel damage and improvement methods of barrel life. |
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