Experimental and Theoretical Investigation of Air-Gap Formation and Interface-Resistance During Metal Casting in Metal Molds

金属模具中金属铸造过程中气隙形成和界面电阻的实验和理论研究

• 批准号: 8816107
• 负责人: M. Ozisik
• 金额: $ 18.26万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-04-15 至 1993-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8816107&HistoricalAwards=false
• 关键词: Experimental; Theoretical; Investigation; Air; Gap

This project is aimed at determining the heat transfer resistance which develops due to formation of an air gap between the mold surface and the solidifying metal as a cast metal begins to cool. The thermal stresses due to the contraction and their relaxation due to creep will be modeled, as will the heat transfer due to conduction between contacting surfaces or through thin lubricating films, partial conduction through contacting asperities , and radiation across the air gap. The model studies will be coupled closely with experimental work performed in collaboration with industrial researchers at an industrial test laboratory.

该项目旨在确定当铸造金属开始冷却时，由于模具表面和凝固金属之间形成气隙而产生的传热阻力。 将模拟由于收缩而产生的热应力以及由于蠕变而产生的松弛，以及由于接触表面之间或通过薄润滑膜的传导、通过接触粗糙体的部分传导以及穿过气隙的辐射而产生的热传递。 模型研究将与工业测试实验室的工业研究人员合作进行的实验工作紧密结合。