Price: $200.00

Format: Hardback
Publisher: Arnold
Publish Date: 1996
Pages: 167

Review | Book Excerpts | Table of Contents

Bonus Package Included
with this item.

This book should be a permanent fixture on the bookshelf of anyone that maintains, designs or operates hydraulic machinery. It includes a wealth of information relating to hydraulic systems, fluid properties, test methods and safety and environment concerns.

Based on 40 years of experience, this reference brings together, for the first time, a comprehensive coverage of the behavior and selection of hydraulic fluids. It includes a full analysis of recent advances in synthetic oils - media which will inevitably become more dominant as natural products become more scarce.

Hydraulic Fluids provides an overview that both students and professionals involved with hydraulics, whether concerned with the mechanical components or system design, or selection and maintenance of the fluids themselves, will refer to again and again as it provides relevant information on all the major hydraulic fluids in a single volume. Free Bonus Package When You Order This Item.

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"Flushing may often be required when the system is new or during subsequent service, particularly after repairs, if significant contamination has occurred. Large systems assembled on site frequently incorporate components treated with temporary corrosion protectives. Unless such materials are removed prior to filling the system with a clean hydraulic fluid, they will gradually dissolve in the working fluid and may detract from its performance in several respects, e.g. by promoting emulsification. "If flushing is required, it is preferable to utilize the grade to be used in service or a lower viscosity grade of similar composition. Critical components (valves, hydraulic pumps and motors) should preferably be isolated or by-passed during the flushing operation to avoid harmful accumulations of particulate contaminants, thus defeating the purpose of the treatment. A minimum charge of flushing oil should suffice, this being circulated through the system and adequately dimensioned supplementary filter(s) by a suitable external pump. Filters should be checked periodically and flushing continued until particle counts on the fluid returning to the filters decrease to a satisfactory level. "The temperature of circulation should preferably be around 40 degrees C; if necessary the flushing medium should be heated, but local overheating must be avoided. If electrical heaters are used they should be of liberal surface area."

Glossary

Introduction
Basic principles of hydraulics
Energy considerations

Types of hydraulic media
Historical
The ideal hydraulic media

Mineral base oils
Composition of mineral oils
Chemical nature

Additives

Synthetic oils
Types of synthetic oil
Synthetic hydrocarbons
Polyethers
Organic esters
Phosphate esters
Silicones
Fluoroethers

Rhealogy
Viscosity
Low temperature flow properties
Temperature dependence of viscosity
Shear stability
Pressure dependence of viscosity

Compressibility
Secant bulk modulus
Tangent bulk modulus
Effect of air on bulk modulus
Low bulk moduli fluids
Density
Thermal properties

Anti-wear properties

Oxidation stability

Demulsibility
Protection against corrosion

Aeration problems
Diagnosis and treatment of aeration problems

Filterability
Filterability test procedures

Specifications
Requirements

Hydraulic fluids for military and aerospace applications
Aircraft and aerospace
Combat vehicles and artillery
Naval vessels

Selection of a suitable hydraulic fluid

Test methods for hydraulic media
Physical/chemical properties
Mechanical testing

Contamination
What impurities are involved?
Where do the impurities originate?

Deterioration and maintenance
Flushing

Analysis of used hydraulic oil
Interpretation of the test results
Condition monitoring and oil change

Fire-resistant fluids
Conversion of existing systems to fire-resistant fluids
Maintenance of fire-resistant fluids

Hydraulic brake fluids

Future perspectives

Health and safety
Ingestion
Skin contact
Eye contact
Inhalation
Materials safety data sheet

Hydraulic fluids and the environment
What is biodegradability?
Determination of biodegradability
Biodegradable hydraulic media

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