Friction Extrusion Process and Equipment Development for Production of High Value Materials from Low-Cost Precursors

利用低成本前驱体生产高价值材料的摩擦挤压工艺和设备开发

• 批准号: 1266043
• 负责人: Xiaomin Deng
• 金额: $ 20万
• 依托单位: University of South Carolina at Columbia
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-15 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1266043&HistoricalAwards=false
• 关键词: Friction; Extrusion; Process; Equipment; Development

This grant provides funding for the development of the friction extrusion process and associated equipment to enable direct production of high-value materials (such as titanium wires) from low-cost precursors (such as powders or machining chips) with reduced energy consumption. Friction extrusion die and process chamber design will be studied. Experiments and numerical simulations will be carried out to develop an in-depth understanding of the scientific principles and physical mechanisms operating in the friction extrusion process. Friction extrusion experiments will be carried out to gain a physical understanding of the process and equipment, such as the effect of extrusion die and chamber design on power consumption and quality of the produced wire. Computational models will be created to simulate the extrusion process in order to investigate issues (e.g. full-field material flow pattern and thermal history) not approachable experimentally. Validation and visualization experiments will be designed and performed to provide measurements of material position, velocity and temperature for validating simulation model predictions, so that computational models can be utilized reliably for process design and optimization purposes.If successful, the results of this research can be used to enable the design, optimization and utilization of the friction extrusion process for the energy-efficient production of high-value materials from low-cost precursors and for recycling machining wastes (chips). The friction extrusion process has the potential to greatly reduce energy requirements for the production of titanium wire feedstock by eliminating costly vacuum melting and billet casting. Wires produced from this process could be used as feedstock for additive manufacturing processes or as filler wires for niche welding applications.

这笔赠款为摩擦挤压工艺和相关设备的开发提供了资金，使之能够从低成本的前体(如粉末或加工芯片)直接生产高价值材料(如钛丝)，并减少能源消耗。将对摩擦挤压模具和工艺腔设计进行研究。将进行实验和数值模拟，以深入了解摩擦挤压过程中的科学原理和物理机制。将进行摩擦挤压实验，以获得对工艺和设备的物理了解，如挤压模具和腔体设计对功率消耗和所生产钢丝质量的影响。将创建计算模型来模拟挤出过程，以便研究实验上无法接近的问题(例如，全场材料流动模式和热历史)。将设计和执行验证和可视化实验，以提供材料位置、速度和温度的测量，以验证模拟模型的预测，从而使计算模型能够可靠地用于工艺设计和优化目的。如果成功，本研究结果可用于摩擦挤压工艺的设计、优化和利用，以利用低成本的前驱体高效地生产高价值材料，并回收加工废料(屑)。通过消除昂贵的真空熔炼和方坯铸造，摩擦挤压工艺有可能极大地降低生产钛丝原料的能源需求。该工艺生产的焊丝可用作添加剂制造工艺的原料，或用作缝隙焊接应用的填充丝。