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Factors That Affect Generation of Collant Mists, December 14, 1998.

PB2001101409

Publication Date	1998
Personal Author	Leith, D.; Thornburg, J.
Page Count	82
Abstract	The goal of this research was to characterize the mist formation process. The salient machining and metalworking fluid parameters affecting the mist generation rate and size distribution of each mist formation mechanism were identified. Empirical equations predicting the mist generation rate or size distribution were developed. Results showed that impaction generated the least amount of mist. The generation was determined by fluid flow, and the mass median diameter and, the size distribution were influenced by fluid viscosity. On the other hand, centrifugal force most important formation mechanism and generated the largest drops. The mist generation rate depended on the amount of heat produced during machining and the heat absorption capacity of the metalworking fluid. Cut depth and rotational speed determined the amount of heat generated; whereas the type of metalworking fluid and fluid flow specified the heat absorption capacity. These parameters were combined into a dimensionless mist generation number that predicted the mist generation rate.
Keywords	Lubricants Coolants Preventive maintenance Mists Equations Fluid flow Drops Viscosity Centrifugal forces Machining Absorption Heat Depth Speed Metal working Metalworking fluids Size distribution Impaction
Source Agency	National Institute for Occupational Safety and Health
Corporate Authors	North Carolina Univ. at Chapel Hill. Dept. of Environmental Sciences and Engineering.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
NTIS Issue Number	200104

Factors That Affect Generation of Collant Mists, December 14, 1998.

Factors That Affect Generation of Collant Mists, December 14, 1998.
PB2001101409

Publication Date	1998
Personal Author	Leith, D.; Thornburg, J.
Page Count	82
Abstract	The goal of this research was to characterize the mist formation process. The salient machining and metalworking fluid parameters affecting the mist generation rate and size distribution of each mist formation mechanism were identified. Empirical equations predicting the mist generation rate or size distribution were developed. Results showed that impaction generated the least amount of mist. The generation was determined by fluid flow, and the mass median diameter and, the size distribution were influenced by fluid viscosity. On the other hand, centrifugal force most important formation mechanism and generated the largest drops. The mist generation rate depended on the amount of heat produced during machining and the heat absorption capacity of the metalworking fluid. Cut depth and rotational speed determined the amount of heat generated; whereas the type of metalworking fluid and fluid flow specified the heat absorption capacity. These parameters were combined into a dimensionless mist generation number that predicted the mist generation rate.
Keywords	Lubricants Coolants Preventive maintenance Mists Equations Fluid flow Drops Viscosity Centrifugal forces Machining Absorption Heat Depth Speed Metal working Metalworking fluids Size distribution Impaction
Source Agency	National Institute for Occupational Safety and Health
Corporate Authors	North Carolina Univ. at Chapel Hill. Dept. of Environmental Sciences and Engineering.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
NTIS Issue Number	200104