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Interpretation of Professional Terminology in Oil Analysis
Interpretation of Professional Terminology in Oil Analysis
Interpretation of professional terms in oil analysis:
Analytical ferrography: suitable for detecting wear particles with a diameter less than 100 microns. By observing the data under a microscope, analyze the properties, wear location, and degree of wear particles in the oil sample.
Direct reading ferrography: an instrument for quantitatively measuring iron filings.
Abrasive particles: Crystal particles and silicon dust pollutants contained in oil products, such as the presence of cutting particles, can cause abnormal wear.
Aluminum alloy: White particles indicate wear on aluminum components, such as cylinder walls.
Ba style alloy: tin antimony copper alloy particles. Usually indicates bearing wear.
Cast iron: Analyze iron filings in the iron spectrum. It may come from parts such as machine covers.
Color: an indicator of the cleanliness and oxidation level of oil products.
Pollutant: Refers to some non-metallic particles that enter the fuel tank from the outside. If it is abrasive particles, the cutting wear particles will significantly increase.
Copper alloy: yellow particles. Indicating the presence of copper alloy component wear, such as oil rings, bearing shells, etc.
Corrosive wear: black submicron particles. Oil oxidation generates acid, which corrodes metal surfaces.
CSt Cents: A unit of kinematic viscosity used to measure viscosity at 40 ℃ and 100 ℃.
Cutting wear: Long spiral or sickle shaped particles, which may be caused by abrasive particle wear or improper component installation.
Black metal oxide: Iron oxide particles. Or it may be due to long-term sedimentation or poor lubrication.
Density: The mass of oil per unit volume.
Flash point: The lowest temperature at which a mixture of steam and air emitted by heating an oil product, under specified conditions, ignites instantly upon contact with a flame.
Fiber: Natural or synthetic fiber. Usually caused by pollution and poor filtration.
Friction polymer: Under high pressure, oil molecules may undergo polymerization. The phenomenon of oil polymerization can seriously affect the viscosity of oil and even block the filtration system.
FTIR: Fourier transform infrared spectroscopy. It can effectively detect the concentrations of carbon deposits, sulfates, oxides, nitrates, ethylene glycol, as well as pollutants such as diesel and water.
Fuel content: Measure the percentage of diesel content in the oil sample. If it is greater than 300ppm (0.03%), it is considered severe pollution.
Ethylene glycol content: The percentage of ethylene glycol content in the oil sample. If it is greater than 300ppm (0.03%), it is considered severe pollution.
HCL: The ppm value of hydrochloric acid in the oil sample.
High alloy steel: black metal particles, usually derived from wear of transmission shafts.
ISO 4406: Common Cleanliness Standards for Hydraulic Systems. Measure the number of particles with diameters greater than 5 microns and 15 microns, and use the corresponding 2-digit coding system to represent the cleanliness level of the oil product.
Insoluble substances: carbon particles, mixed particles of carbon and other substances. The sedimentation phenomenon that reflects the existence of motivation. For compressors and gearboxes, a significant increase in the number of insoluble particles indicates a serious problem.
Experiment number: The serial number of the sample received by the laboratory.
Flake particles: Wear particles in rolling bearings formed by rolling.
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