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TYPICAL APPLICATIONS OF BELLOWS
PRESSURE RESPONSIVE DEVICES METALLIC SEALS FOR MOTION INTO AHERMETICALLY SEALED HOUSING
FLEXIBLE SHAFT COUPLINGS
LIQUID EXPANSIONABSORBING BELLOWS
HYDRAULIC MULTIPLIER AND/ORREMOTE TRANSMISSION
FLEXIBLE BELLOWS SEALS
ATHERMALIZATION BELLOWS ASSEMBLYSOME OTHER APPLICATIONS
FLEXIBLE INTERCONNECT CONTACTS
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INDEX
PAGE
INTRODUCTIONS
SERVOMETER ELECTRODEPOSITED METAL BELLOWS
SECTION I - BELLOWS DESIGN
SECTION II - PROPERTIES OF SERVOMETER BELLOWS
SECTION III MATHEMATICAL DESIGN OF A BELLOWS
SERVOMETER® ELECTROFORMS
SERVOMETER’S PROCESS OF ELECTRODEPOSITION
Machine Mandrel Electrodeposit Nickel onto Mandrel
Trim Plated Mandrel Dissolve Mandrel Spring Rate BellowsTo Check Wall
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SECTION I - BELLOWS DESIGN
HOW TO ESTABLISH A BELLOWS DESIGN
SERVOMETER STOCK BELLOWS- (IN STOCK AND ON THE SHELF)
TYPES OF BELLOWS ENDS
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HOW TO USE THE TABLE OFBELLOWS CONVOLUTION PROPERTIES
TABLE OF BELLOWS CONVOLUTION PROPERTIES - TO BE USED AS GUIDE ONLY - This Table Does Not Represent
Effective area
Spring rate
Maximum stroke per convolution
Maximum pressure for 1/2 stroke
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SECTION II - PROPERTIES OF SERVOMETER® BELLOWS
TOLERANCES
DESIGN LIMITS
METAL COMPOSITION
Regular Nickel:
Sulfur Free Nickel:
MECHANICAL PROPERTIES OFBOTH TYPES OF NICKEL:
SURFACE FINISHES
LEAK TIGHTNESS
ENVIRONMENTAL TOLERANCES
Magnetic Properties:
Corrosion Resistance:
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JOINING OF BELLOWS TO END FITTINGS
Mechanical Strength:
Soft Soldered Joints:
Silver Brazed Joints
Welded Joints
SPECIAL TYPES OF BELLOWS
HIGH COMPRESSION BELLOWS
MULTI-PLY BELLOWS
PRE-COMPRESSED BELLOWS
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SECTION III - MATHEMATICAL DESIGN OF A BELLOWS
SYMBOLS
PRESSURE RATING
STROKE RATING
RATING BELLOWS FOR COMBINED STROKE & PRESSURE
LIFE EXPECTANCY
LIFE EXPECTANCY TABLE
EXAMPLE:
EXAMPLE:
DE-RATING BELLOWS STROKE FOR PRESSURE & LIFE
SPRING RATE
EFFECTIVE AREA
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INTRODUCTION ADVANTAGES
DESIGN CONSIDERATIONSMATERIALS AND PROPERTIES
Servometer Nickel
SIZE LIMITATIONS
DESIGN ASSISTANCE
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ABSSAC LIMITEDThe Bond Industrial Estate Wickhamford Evesham Worcestershire WR11 7RH England
T: 0044(0)1386 833301 F: 0044(0)1386 831500 E: [email protected] W: www.abssac.com