Lab Facility

Ferrographic Analysis

A recognized industry leader in the science of ferrography, a technique used to analyze fluid particles that indicate mechanical wear, Engineered Lubricants has the ability to minimize waste and optimize cost savings for customers. 

The types of wear and the influence of lubricant additives are analyzed by examination of oil samples taken from operating machinery. Individual particles may be observed on a ferrogram. A ferrogram can determine the nature and severity of an abnormal wear condition and distinguish compounds from free metals, providing significant data to indicate whether to overhaul machinery or continue operation.

EL employs the use of two types of ferrographic analysis:

  • Direct Read Ferrography: Wear particle analysis by magnetically separating wear particles from the sample and quantitatively measuring their concentration.
  • Analytical Ferrography: A separation of metallic and non-metallic wear particles on a glass slide for photographic documentation and microscopic analysis to determine the size, shape and color of the particles. This information is used to rate the wear situation as normal or abnormal.

It is possible to differentiate cutting wear, rubbing wear, erosion and scuffing by particle size and configuration. The ratio of large particles to small, and changes in this ratio in subsequent samples, can reveal how quickly a system is deteriorating. Although ferrography is expensive compared to other analyses, the data it provides is invaluable in determining whether a situation is critical in costly hydraulic systems.

Learn more about how ferrorgraphy is used to determine wear particle equilibrium.