夏克祥,姜春茂,刘海艳,等.某炮弹弹体内膛裂纹原因分析[J].精密成形工程,2015,7(3):93-96.
XIA Ke-xiang,JIANG Chun-mao,LIU Hai-yan,et al.Cause Analysis of Bore Cracks in a Projectile[J].Journal of Netshape Forming Engineering,2015,7(3):93-96. |
| 某炮弹弹体内膛裂纹原因分析 |
| Cause Analysis of Bore Cracks in a Projectile |
| 投稿时间：2015-03-20 修订日期：2015-05-10 |
| DOI：10.3969/j.issn.1674-6457.2015.03.018 |
| 中文关键词: 弹体 9260 钢 裂纹疵病 原材料 |
| 英文关键词: projectile 9260 steel crack fault raw material |
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| 中文摘要: |
| 目的 某弹体作为某炮弾一重要零件,材料采用 9260 钢。 研究其在冲压过程中,毛坯内膛出现侧壁拉裂和底部裂纹疵病的原因。 方法 利用理论分析毛坯在冲压过程中的变形机理和金属流动规律,结合理化检测等手段,对弹体疵病产生的原因进行了系统分析。 结果 通过对毛坯成形原理分析和理化检测分析,对裂纹产生的原因进行逐一排查,最终准确找到了该弹体疵病产生的原因。 结论 弹体用 9260 钢原材料存在缩孔残余及沿晶低熔点物质,是造成弹体毛坯侧壁拉裂和裂纹的根本原因。 |
| 英文摘要: |
| As an important part of the artillery elastic body, the projectile was made of 9260 steel material. The cause for cracks on the bore wall and the bore bottom of the blank in the process of stamping was analyzed. Theoretical analysis of the stamping deformation mechanism and the law of metal flow was conducted for the blank, and the cause for projectile faults was systematically analyzed using physical and chemical detection methods. By means of blank forming principle analysis and physical / chemical detection analysis, the causes for the cracks were investigated one by one, and finally the cause for projectile faults was accurately revealed. It was found that the presence of shrinking hole remnant and intercrystalline low-melting point substances in the 9260 steel raw material for the projectile was the fundamental cause for the cracks in the bore wall of the projectile blank. |
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