Development of an improved munition casing produced by Powder Metallurgy

开发一种改进的粉末冶金弹药外壳

• 批准号: CCARD-2022-00682
• 负责人: Marin, Gheorghe
• 金额: $ 2.91万
• 依托单位: Cégep de Trois-Rivières
• 依托单位国家: 加拿大
• 项目类别: CCI Applied Research and Development Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=756572
• 关键词: Development; improved; munition; casing; produced

In the context of this research project in collaboration with the Centre de Metallurgy of Québec, CMQ, General Dynamics-OTS Canada wishes to develop an improved munition casing produced by Powder Metallurgy (PM). The term "improvement" regarding munitions can be defined by different qualifications. In the design process of new munitions, the prediction of the mass and velocity distributions of fragments plays a significant role to optimize the effects and the overall lethality of the munition. Some munition casings produce only a few fragments; however, these fragments have a larger hazardous perimeter resulting in higher collateral damage. For safety purposes, knowledge about fragmentation is essential in conducting risk management. The improvement that will be developed within the project consists of an enhanced fragmentation casing design and the study of a potential production method termed DPR-S, Direct Powder Rolling - Stamping.The selection of a consolidation technique that can i) yield the required mechanical properties, ii) be industrialized for commercialization and iii) reduce material waste is essential. Although different manufacturing methods can achieve the first, they are limited when it comes to scaling up to a profitable industrial production line. Direct Powder Rolling has already been commercialized for large scale production and has been used to produce metal sheets. The novelty of the process being studied is its hybrid nature, DPR-S. The "S" stands for the stamp forming. The microstructure of the DPR-S components plays a roll on the fragmentation behavior of the ammunition components. Therefore, metallurgical characterization will be performed to comprehend the casing state in key regions of the design. This information will be used to execute the fragmentation performance evaluation and better understand the fragmentation behavior. The project will be divided in four phases. - Set-up of pseudo-DPR-S equipment.- Processing of steel alloys by pseudo-DPR-S and sheets by roll-stamping.- Characterization of casings consolidated by pseudo-DPR-S and plates by roll-stamping.- Fragmentation performance evaluation.Regarding the impact of the project, the research and knowledge that will be gained will be applied as part of General Dynamics-OTS Can continued improvement initiative. Possibly achieving a new product that can be commercialized. For the CMQ, the DPR-S method will be developed and used in future projects.

在与魁北克冶金中心 (CMQ) 合作的这一研究项目中，加拿大通用动力公司 (OTS) 希望开发一种由粉末冶金 (PM) 生产的改进弹药外壳。关于弹药的术语“改进”可以定义为：在新弹药的设计过程中，碎片质量和速度分布的预测对于优化弹药的效果和整体杀伤力起着重要作用。一些弹药外壳仅产生少量碎片；然而，这些碎片的危险范围较大，会导致更高的附带损害，因此，有关碎片的知识对于进行风险管理至关重要。增强破碎外壳设计的研究以及称为 DPR-S（直接粉末轧制 - 冲压）的潜在生产方法的研究。选择一种技术，可以 i) 产生所需的机械性能，ii) 实现工业化商业化和iii）减少材料浪费至关重要。所研究的工艺的新颖之处在于其混合性质，“S”代表冲压成型，DPR-S 部件的微观结构对弹药部件的破碎行为产生影响。 .因此，冶金将进行表征以了解设计关键区域的套管状态，该信息将用于执行碎片性能评估并更好地了解碎片行为。 DPR-S 设备。- 通过伪 DPR-S 加工钢合金，并通过辊冲压加工板材。- 通过伪 DPR-S 固结的外壳和通过辊冲压板材进行表征。- 破碎性能关于该项目的影响，将获得的研究和知识将作为通用动力-OTS Can 持续改进计划的一部分应用，可能会为 CMQ 开发出可商业化的新产品。方法将在未来的项目中开发和使用。