Temperature control in aluminum extrusion is an important step in producing quality products and maximising productivity potential. There are defects in extrusions that have been found to be related to excessively high exit temperatures, which limit the production rate and reduces product quality.
BOC can help you resolve this issue by providing a system for cooling your aluminum dies with liquid and gaseous nitrogen. By using nitrogen for die cooling, you may increase your extrusion rate by up to 50%. Nitrogen properties work well with aluminum because it is a relatively inert gas that can decrease high temperatures quickly and efficiently. In addition to cooling, the gaseous nitrogen creates a low oxygen atmosphere at the press bolster. This improves the surface quality of the aluminum extrusion.
The use of nitrogen to cool will also offer additional benefits in the long run. When the aluminum die is cooled properly, its life is extended, allowing for more extrusions and a decrease in the need to replace the die. The more consistent heat cycle temperatures protect the die from overheating and deformation.