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Tribology in particulate technology
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Tribology in Particulate Technology Edited by B. J. Briscoe a n d M. J. A d a m s The original title of this book was to be 'Tribology in Powder Processing and Conveying', being based on the papers of four oneday meetings organized during 1985 and 1986. It is a pity this title was not retained because, although there are aspects outside such a description, the major content relates to powder processing rather than general particle technology. To many readers of Tribology international, the thought of miniscule dry particles having tribological characteristics may be somewhat of a novelty. However, although the scale and the media are different to bearings in races, the problems of powder sliding down a hopper or cement slurry Published by Adam Hilger, Bristol and Philadelphia, 1987, 472 pp, £55.00
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flowing down a chute have certain similarities. Friction, lubrication, wear? Yes, they are all there, and they are of major concern. In addition there is compaction and, in powders, the more serious problem of adhesion. The book endeavours to cover all these tribological features, primarily for powders but the oil-based theoretician will find much to stimulate him. Theoretician rather than practician because the contents are heavily biased towards advanced particle theory including quantum theory, Maxwellian single-particle velocity distributions and much more, as well as the more modern JKR and D M T theories. (This is not surprising as over 75% of the contributors were from academic establishments.)
The four parts of the book follow the four conferences: friction in powder flows, adhesive forces in powder flow, powder compactness and interface shear, and attrition and wear. Each of these has a definite tribological flavour and the two editors have provided additional text to give an even better bridge between the tribologists and the particle technologists. The odd section or t w o on roller bearings (sadly omitted from the extensive index), or the fascinating comments on filtration (aga;~_ not always in the index) are helful too. To any graduate involved in powder technology this book is a must. To other disciplines there is less of a clear reason to purchase, but for those with exceptionally lively or devious minds the contents may well bring just that direction needed to solve their own tribological problems. T. M. Hunt
.,r,,,rr, o,,or,
NLGI
55th Annual Meeting
The main objectives of the NLGI are the d e v e l o p m e n t of better lubricating greases for the consumer and better grease lubrication engineering service to the industry. NLGI serves as a source of technological information in the field of lubricating greases, and Its Technical Committees work diligently toward the solution of industry problems. Its monthly technical Journal, the NLGI SPOKESMAN is read by more than 6000 people who are Interested in lubricating grease. These readers are located in over 50 countries worldwide. Holding membership are companies who manufacture and market lubricating greases. Also involved are companies who serve them with equipment, supplies and services. There are many companies whose Interests are primarily technical. The Consumer category is comprised of organizations who are lubricating grease users. These members are located all around the globe.
For Information on the 55th Annual Meeting, or a c o p y of the information brochure including our catalogue of publications, please contact the National Lubricating Grease Institute International Office,
O c t o b e r 23 - 26, 1988 The S a d d l e b r o o k ~mpa, Florida, USA
TRIBOLOGY international
299
m
i
m
Tribology in Particulate Technology Edited by B. J. Briscoe a n d M. J. A d a m s The original title of this book was to be 'Tribology in Powder Processing and Conveying', being based on the papers of four oneday meetings organized during 1985 and 1986. It is a pity this title was not retained because, although there are aspects outside such a description, the major content relates to powder processing rather than general particle technology. To many readers of Tribology international, the thought of miniscule dry particles having tribological characteristics may be somewhat of a novelty. However, although the scale and the media are different to bearings in races, the problems of powder sliding down a hopper or cement slurry Published by Adam Hilger, Bristol and Philadelphia, 1987, 472 pp, £55.00
II
flowing down a chute have certain similarities. Friction, lubrication, wear? Yes, they are all there, and they are of major concern. In addition there is compaction and, in powders, the more serious problem of adhesion. The book endeavours to cover all these tribological features, primarily for powders but the oil-based theoretician will find much to stimulate him. Theoretician rather than practician because the contents are heavily biased towards advanced particle theory including quantum theory, Maxwellian single-particle velocity distributions and much more, as well as the more modern JKR and D M T theories. (This is not surprising as over 75% of the contributors were from academic establishments.)
The four parts of the book follow the four conferences: friction in powder flows, adhesive forces in powder flow, powder compactness and interface shear, and attrition and wear. Each of these has a definite tribological flavour and the two editors have provided additional text to give an even better bridge between the tribologists and the particle technologists. The odd section or t w o on roller bearings (sadly omitted from the extensive index), or the fascinating comments on filtration (aga;~_ not always in the index) are helful too. To any graduate involved in powder technology this book is a must. To other disciplines there is less of a clear reason to purchase, but for those with exceptionally lively or devious minds the contents may well bring just that direction needed to solve their own tribological problems. T. M. Hunt
.,r,,,rr, o,,or,
NLGI
55th Annual Meeting
The main objectives of the NLGI are the d e v e l o p m e n t of better lubricating greases for the consumer and better grease lubrication engineering service to the industry. NLGI serves as a source of technological information in the field of lubricating greases, and Its Technical Committees work diligently toward the solution of industry problems. Its monthly technical Journal, the NLGI SPOKESMAN is read by more than 6000 people who are Interested in lubricating grease. These readers are located in over 50 countries worldwide. Holding membership are companies who manufacture and market lubricating greases. Also involved are companies who serve them with equipment, supplies and services. There are many companies whose Interests are primarily technical. The Consumer category is comprised of organizations who are lubricating grease users. These members are located all around the globe.
For Information on the 55th Annual Meeting, or a c o p y of the information brochure including our catalogue of publications, please contact the National Lubricating Grease Institute International Office,
O c t o b e r 23 - 26, 1988 The S a d d l e b r o o k ~mpa, Florida, USA
TRIBOLOGY international
299