Wear-out products analysis in consistent lubricants

 

Wear-out products analysis in consistent lubricants

Wear-out and corrosion products, dust, water are accumulated in lubricants while exploitation. They not only spoil the lubricant properties, but also indicate the friction details wear-out. Wear-out control helps to diagnose defective parts and make either maintenance or repairing before failures. 
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The contemporary conditions require means for diagnostics, control and forecast of bearings operation, without disassembling the units,

For example Fe, Cu, Cr and Si  concentration in lubricant should be controlled.

Rejection criteria are:
Si> 0.2%
Fe> 1.0%
Cr> 0.015%
Cu> 0.15%

High concentration of metal inclusion indicates bearing intensive wear-out and danger for further operation. Silicon presence in the lubricant indicates bad impermeability of the journal box and necessity of lubricant renewal.

X-ray fluorescence method provides direct determination of Si, Fe. Cr and Cu content in lubricants without sample preparation. The test material is mixed, filled in the sample cup, covered with polyethylenetereftalate film and put in spectrometer. Analysis is carried out automatically according to the program.

The advantage of the method is its rapidness and simplicity combined with high precision. All elements can be determined from one specimen.
SPECTROSCAN МАКС-G

Wavelength dispersive X-ray fluorescent WDXRF scanning spectrometer for determination of chemical elements in the range from Ca (Calcium) to U (Uranium) in various compounds.

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SPECTROSCAN МАКС-GF1(2)E

:SPECTROSCAN МАКС-GF1(2)E" is a modification of WDXRF  "SPECTROSCAN МАКС-G" spectrometer with one or two additional EDXRF channels.

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SPECTROSCAN МАКС-GVM

"SPECTROSCAN MAKC-GVM" WDXRF spectrometer determines elements from Na (Sodium) to U (Uranium) in solids, liquids or powders, in solutions and thin films, deposits on filters. 

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