Quantifying Lubricant Thickness Accurately
Guest Blog: Mike Justice President, UPA Technology Forming good parts is a demanding and difficult task, mainly because of the many variables that can interrupt the process. Stamping problems can be due to several areas including problems with dies, substrates, press issues as well as incorrect amounts of lubricant. Quickly evaluating and eliminating the possible causes of stamping problems speeds up correction at the press where downtime often is measured by minutes/month. Quantifying lubricant thickness quickly and accurately can determine or eliminate whether lubricant issues are the cause of forming issues. But, measuring lubricant thickness has not been easy and has been the cause of much discussion and dissension. Stampers, processors and mills are routinely tasked with accurately measuring oil-films ranging between 7-120 Milligrams per square foot (mg/ft2) in order to meet specification for making good parts. As a thickness instead of a weight, this equat...