I took that report to the machine owner at the plant and was able to show him the images. And, we include it at no additional charge. X-ray Fluorescence X-ray fluorescence XRF is a comparatively obscure test method, which is gaining in popularity with the development of instruments capable of online and onsite elemental analysis.
This suggested different wear stages. Using the flow decay method, a sample of oil is passed oil through a calibrated screen that acts like a filter.
Their test reports are easy to read and I know they are looking at them before they send them to me. This chapter, as well as many others in the book, also contains a case study that demonstrates how fatigue wear can damage equipment, in this particular case how it caused damage to bearings in various mining equipment.
We do about samples a month and I like to know when my samples get to the lab. The ISO Code is the most common unit of reporting the number of particles found in a sample.
Cement Industry Dedicated Customer Care We know your time is valuable and when you contact us your questions are urgent. For this reason, it is advisable to include additional tests capable of detecting these larger particles when setting up routine test slates for heavily loaded components where fatigue and adhesive wear is possible.
This article examines how oil analysis was used to monitor the bearing wear on the drive side of the No.
Opt, Surface Pitting of a Bearing Raceway After being repeatedly over-rolled before and after spalling and before dislodging from the bearing surface, laminar particles have several distinct features: Laminar particles are the result of microspalling that has further deteriorated into visible surface pitting and spalling.
It is important to understand that both commonly used atomic emission spectrometers, Inductively Coupled Plasma ICP and Rotating Disc Electrode RDE instruments, suffer from an inability to detect wear debris in excess of 3 to 8 microns in size, depending on instrumentation, and are reliable only for particles smaller than 1.
Most likely, these small spheres occurred with microspalling particles, which are small plate-like particles of less than 30 micron to 50 micron Figure Surface Cracking Particle Indentation Fatigue Wear Particles There are four typical types of wear particles that have been recognized as being representative of rolling contact fatigue: As the particle concentration rises, the surface indentation density increases Figure 2, center.
Particle counting has two major drawbacks when using it for wear debris detection. Recently, particulate-indentation induced surface fatigue has attracted greater attention among tribologists.
These features clearly demonstrate that these chunky particles are a result of deep-spalling, which indicates a more severe bearing fatigue condition than that of surface spalling.
In general, the small spherical particles of less than 5 micron are associated with rolling bearing fatigue; whereas spheres larger than 5 micron are the products of other wear modes or ingression sources, such as sliding, ploughing or cavitation. Our customer Engagement group gets you answers, when you ask.
Similarly, oxidized ferrous particles for example, rustcan also be nonmagnetic while still indicative of wear in progress. Many problems can be quickly and easily identified by monitoring the number and size-distribution of particles in an oil sample.
Identification Techniques In addition to discussing fatigue wear particle formation and the various types of fatigue wear particles, the fatigue wear particle analysis chapter in Dr.
The surface roughness of the inlay is also lower than that of the roller as well, and as such, is prone to the most rapid rate of wear.OIL AND PARTICLE ANALYSIS.
Technology Training that works Oil and Particle Analysis • Vibration analysis is an effective PM technique. • Oil and Particle Analysis is maturing into another. Wear debris analysis is a technique for analyzing the debris, or particles, present in lubrication oil that could indicate wear, particularly mechanical wear.
This method provides microscopic examination and analysis of debris/particles found in a lubrication oil. Wear particle analysis, using tools such as ferrous density and ferrographic analysis, can play a valuable role in determining the root cause of active machine wear.
However, unlike many common oil analysis tests that are quantitative in nature, successfully interpreting information on wear. Ferrography is a wear particle analysis utilizing diagnostic and predictive techniques to evaluate the on-line condition of interacting lubricated or fluid powered parts or components.
Understanding Particle Counting Methods. Particle counting is considered by many to be one of the most important test for used oil analysis. Many problems can be quickly and easily identified by monitoring the number and size-distribution of particles in an oil sample.
Wear particle analysis for diesel engines has been used in conjunction with other test methods, usually spectrometric analysis with superior results.
As in other oil lubricated equipment, wear is an indicated.Download