Rheological and granulometrical studies of a cutting oil emulsion I. The effects of oil concentration

Journal Article · Mon Mar 15 04:00:00 EST 1993 · Journal of Colloid and Interface Science; (United States)

DOI:https://doi.org/10.1006/jcis.1993.1138· OSTI ID:6314884

Benali, L ^[1]

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1. Inst. de Mecanique des fluides de Toulouse (France)

Cutting oil emulsions are frequently used for lubrication of drilling and cutting tools. Understanding the rheological behavior of such emulsions is thus of importance for the design of pipes and mixing equipment. Rheological behavior of emulsions has been investigated using a controlled stress rheometer while granulometrical investigation has been performed using an optical microscope and a Coulter particle size analyzer. The oil concentration was varied from 10 to 95 vol%. For low oil concentrations (from 10 to 60%), a comparison of viscosity data with suspension viscosity models introducing the normalized oil concentration was carried out. Whereas for high oil concentrations (from 70 to 90%), the cutting oil emulsions are characterized by viscoelastic behavior. The creep-recovery results are described very well by the generalized Kelvin-Voigt model in the linear region. The beginning of phase transition O/W to W/O agrees with the peak of viscosity and has been confirmed by the electrical conductivity data. Furthermore, the microscopic examinations reveal that the end of phase transition corresponds to the oil concentration of 95%. The mean diameter and the size distribution of droplets have been obtained. An attempt has been made to correlate rheological and particle size results.

• OSTI ID: 6314884
• Journal Information: Journal of Colloid and Interface Science; (United States), Journal Name: Journal of Colloid and Interface Science; (United States) Vol. 156:2; ISSN 0021-9797; ISSN JCISA5
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320302* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Materials
COLLOIDS
CONCENTRATION RATIO
CREEP
CUTTING TOOLS
DATA
DISPERSIONS
DRILL BITS
DRILLING EQUIPMENT
DROPLETS
ELASTICITY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EMULSIONS
EQUIPMENT
EXPERIMENTAL DATA
FLOW MODELS
FLUID FLOW
INFORMATION
LUBRICANTS
LUBRICATING OILS
LUBRICATION
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
MICROSCOPY
NUMERICAL DATA
OILS
OPTICAL MICROSCOPY
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARTICLE SIZE CLASSIFIERS
PARTICLES
PETROLEUM PRODUCTS
PHASE STUDIES
PHYSICAL PROPERTIES
RHEOLOGY
STEADY-STATE CONDITIONS
TENSILE PROPERTIES
TOOLS
UNSTEADY FLOW
VISCOSITY