The most common methods for initial detection of abnormal levels of wear debris in used oils include elemental analysis, ferrous density analysis (DR, etc.), particle counting and patch testing. For some users, because of the criticality of the application, all of these screening tests for wear metals are integrated into the routine test slate.

In such cases, when sampling is done correctly, it would be rare for the abnormal production of wear metals to go undetected. However, when only one or two of these methods are routinely deployed, there is a distinct risk that an incipient (early stage) failure condition may be missed.

The post Tricks to Classifying Wear Metals and Other Used Oil Suspensions appeared first on Tesibis.

Imagine the filter inside your machine is made of fibers the size of telephone poles, stacked randomly in all directions, many layers thick. Each juncture where poles touch is a drop of super glue for support. To emulate actual operating conditions, the stack of poles is placed on a large moving and vibrating table.

Now, imagine that the contaminants inside your oil are lumps of gelatin, clumps of tar, ping-pong balls, marbles, tree branches, powdery sand, beanbags, strips of sheet metal, streams of honey, wet rags and beach balls. To begin our example, suppose that you had large containers of these different contaminants beside you as you perch on top of scaffolding hovering above the stack of telephone poles.

The post How Filters Work to Control Contamination in Oil appeared first on Tesibis.