带有层流控制的液氮模具冷却系统是宾夕法尼亚艾伦敦气体产品和化学制品公司发展的。该系统提供液氮用于在铝挤压操作过程中冷却和钝化模具工作面。该系统有助于消热量的增高和氧化物的形成之类的问题。氧化要引致产品质量的下降和模具要经常的抛光。产生的热量有害于挤压质量和降低挤压速度。液氮喷射到模具的工作面上,将充满 Liquid nitrogen die cooling system with laminar flow control was developed by Allentown Gas Products and Chemicals, Pennsylvania. The system provides liquid nitrogen for cooling and passivating the mold face during the aluminum extrusion operation. The system contributes to issues such as increased calorific value and formation of oxides. Oxidation will lead to the decline in product quality and mold to be polished frequently. The heat generated is detrimental to extrusion quality and extrusion speed. Liquid nitrogen sprayed onto the working surface of the mold will be full