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| Experimental Study on Properties of Small-caliber Rapid-firing Automatic Gun Inlaid with Ta-10W Lining |
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| DOI：10.7643/issn.1672-9242.2022.07.007 |
| KeyWord:small caliber rapid firing automatic gun barrel bushing adjusting cylinder Ta-10W abrasion loss muzzle velocity firing rate |
| Author | Institution |
| LIN Sheng-ye |
School of Mechanical Engineering, Nanjing University of Science and Technology, Jiangsu Nanjing , China |
| MING Xia-lei |
School of Mechanical Engineering, Nanjing University of Science and Technology, Jiangsu Nanjing , China |
| LI Hao |
State-owned No.152 Factory , Chongqing , China |
| WANG Mao-sen |
School of Mechanical Engineering, Nanjing University of Science and Technology, Jiangsu Nanjing , China |
| DAI Jin-song |
School of Mechanical Engineering, Nanjing University of Science and Technology, Jiangsu Nanjing , China |
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| Abstract: |
| To enhance the ablative resistance, extend the barrel life and improve combat effectiveness of the small-caliber rapid-firing automatic gun, the barrel bushing and adjusting cylinder inlaid with Ta-10W lining are manufactured and applied on the automatic gun. Then the shooting experiment upon a small-caliber gas-driven revolving gun is carried out to measure the muzzle velocity, the firing rate and the abrasion loss of the tested object. The above experiment data are compared with those obtained from the automatic gun with steel parts to evaluate the life-prolonging effect of the proposed method. The results show that, by using the barrel bushing and adjusting cylinder inlaid with Ta-10W lining, the abrasion losses of the land diameter of the barrel bushing, the groove diameter of the barrel bushing and the orifice diameter of the adjusting cylinder decrease 57.14%, 40.00% and 91.23%, respectively, and the variations of the muzzle velocity and the firing rate before and after firing decrease 82.56% and 93.33%, respectively, after 580 firings. The proposed method solves the problem of Tantalum coating peeling off, and thus greatly enhances the ablative resistance of the gun barrel inner bore. This study provides a new technological method for extending the barrel life of the small-caliber rapid-firing automatic gun. |
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