Characterization of spray lubricants for the high pressure die casting processes

Adrian S. Sabau; Ralph B. Dinwiddie

doi:10.1016/j.jmatprotec.2007.05.021

Characterization of spray lubricants for the high pressure die casting processes

Adrian S. Sabau, Ralph B. Dinwiddie

Multiscale Materials

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

During the high pressure die casting process, lubricants are sprayed in order to cool the dies and facilitate the ejection of the casting. The cooling effects of the die lubricant were investigated using thermogravimetric analysis (TGA), heat flux sensors (HFS), and infrared imaging. The evolution of the heat flux and pictures taken using a high-speed infrared camera revealed that lubricant application was a transient process. The short time response of the HFS allows the monitoring and data acquisition of the surface temperature and heat flux without additional data processing. A similar set of experiments was performed with deionized water in order to assess the lubricant effect. The high heat flux obtained at 300 °C was attributed to the wetting and absorbent properties of the lubricant. Pictures of the spray cone and lubricant flow on the die were also used to explain the heat flux evolution.

Original language	English
Pages (from-to)	267-274
Number of pages	8
Journal	Journal of Materials Processing Technology
Volume	195
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jmatprotec.2007.05.021
State	Published - Jan 1 2008

Funding

This work was performed under a Cooperative Research and Development Agreement (CRADA) with the United States Advanced Materials Partnership (USAMP), United States Council for Automotive Research (USCAR) for the project on Structural Cast Magnesium Development. This research was sponsored by the U.S. Department of Energy, Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Transportation Technologies, Lightweight Vehicle Materials Program, under contract DE-AC05-00OR22725 with UT-Battelle, LLC. The authors acknowledge that this research was supported in whole by Department of Energy Cooperative Agreement No. DE-FC05-02OR22910. Such support does not constitute an endorsement by the Department of Energy of the views expressed herein.

Keywords

Die casting
Die lubrication
Heat flux measurement
Heat transfer
Infrared visualization
Spray cooling

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10.1016/j.jmatprotec.2007.05.021

Cite this

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title = "Characterization of spray lubricants for the high pressure die casting processes",

abstract = "During the high pressure die casting process, lubricants are sprayed in order to cool the dies and facilitate the ejection of the casting. The cooling effects of the die lubricant were investigated using thermogravimetric analysis (TGA), heat flux sensors (HFS), and infrared imaging. The evolution of the heat flux and pictures taken using a high-speed infrared camera revealed that lubricant application was a transient process. The short time response of the HFS allows the monitoring and data acquisition of the surface temperature and heat flux without additional data processing. A similar set of experiments was performed with deionized water in order to assess the lubricant effect. The high heat flux obtained at 300 °C was attributed to the wetting and absorbent properties of the lubricant. Pictures of the spray cone and lubricant flow on the die were also used to explain the heat flux evolution.",

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AB - During the high pressure die casting process, lubricants are sprayed in order to cool the dies and facilitate the ejection of the casting. The cooling effects of the die lubricant were investigated using thermogravimetric analysis (TGA), heat flux sensors (HFS), and infrared imaging. The evolution of the heat flux and pictures taken using a high-speed infrared camera revealed that lubricant application was a transient process. The short time response of the HFS allows the monitoring and data acquisition of the surface temperature and heat flux without additional data processing. A similar set of experiments was performed with deionized water in order to assess the lubricant effect. The high heat flux obtained at 300 °C was attributed to the wetting and absorbent properties of the lubricant. Pictures of the spray cone and lubricant flow on the die were also used to explain the heat flux evolution.

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Characterization of spray lubricants for the high pressure die casting processes

Abstract

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Keywords

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