Process optimization for high integrity magnesium automotive components

高完整性镁汽车部件的工艺优化

• 批准号: 239080-2010
• 负责人: Hu, Hongfa(Henry)
• 金额: $ 2.91万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=455152
• 关键词: Process; optimization; integrity; magnesium; automotive

Over the past 15 years, magnesium (Mg) usage in automobiles has significantly increased by about 15% annually. The average Mg content in the 2007 model cars was about 6 kg, and is expected to increase to 160 kg by 2020. Currently, Mg automotive applications are produced by conventional high pressure die casting (HPDC) processes, which result in materials with high porosity content and low strengths. Recent studies have demonstrated that the squeeze casting process is able to significantly eliminate porosity and other casting defects in magnesium alloys. However, squeeze casting is relatively costly compared with conventional HPDC due to higher process operation and tooling costs. To maximize the engineering performance and quality of Mg squeeze castings at a competitive cost, the squeeze casting process needs to be optimized.

在过去的15年中，镁（Mg）在汽车中的使用量每年以约15%的速度显著增加。2007款汽车的平均镁含量约为6公斤，预计到2020年将增加到160公斤。目前，镁汽车应用是通过传统的高压压铸（HPDC）工艺生产的，这导致材料具有高孔隙率含量和低强度。最近的研究表明，挤压铸造工艺能够显著消除镁合金中的气孔和其他铸造缺陷。然而，由于较高的工艺操作和工具成本，与常规HPDC相比，挤压铸造相对昂贵。 为了以具有竞争力的成本最大化镁挤压铸件的工程性能和质量，需要优化挤压铸造工艺。