CORROSION COTROL MANUAL.pdf

(106 KB) Pobierz
TM-584C
TM-584C
REVISION C
CORROSION CONTROL AND TREATMENT
MANUAL
TM-584C
TM-584C
REVISION C
CORROSION CONTROL AND TREATMENT
MANUAL
This Revision Supersedes All
Previous Editions of This Manual
NOVEMBER 1, 1994
TM-584C
TABLE OF CONTENTS
Section
I.
1.1
1.2
1.3
II.
2.1
2.2
2.3
2.4
2.4.1
III.
3.1
3.2
3.2.1
3.2.2
3.2.3
3.2.4
3.3
3.3.1
3.3.1.1
3.3.1.2
3.3.1.3
3.3.2
3.3.2.1
3.3.3
3.3.3.1
3.3.4
3.3.5
3.3.6
3.3.7
3.3.8
3.3.9
Title ................................ ................................ ................................ ........... Page
INTRODUCTION................................
................................ ....................... 1-1
General................................
................................ ................................ ........ 1-1
Responsibility................................
................................ .............................. 1-1
Reference Documentation................................
................................ ............ 1-1
CORROSION CONTROL................................
................................ .......... 2-1
General................................
................................ ................................ ........ 2-1
Preventive Maintenance................................
................................ ............... 2-1
Surveillance................................
................................ ................................ . 2-2
Design Considerations................................
................................ ................. 2-2
Corrosion Control................................
................................ ........................ 2-2
TYPES OF CORROSION AND THEIR CAUSES
................................ ..... 3-1
General................................
................................ ................................ ........ 3-1
Basic Causes of Corrosion................................
................................ ........... 3-1
Conditions Necessary for Corrosion
................................ ............................. 3-1
Effect of Material Selection
................................ ................................ .......... 3-1
Water Intrusion................................
................................ ............................ 3-1
Environmental Factors
................................ ................................ ................. 3-2
Types of Corrosion
................................ ................................ ...................... 3-2
Concentration Cell Corrosion................................
................................ ....... 3-2
Metal Ion Concentration Cells................................
................................ ..... 3-3
Oxygen Concentration Cells
................................ ................................ ......... 3-3
Active-Passive Cells................................
................................ .................... 3-3
Galvanic Corrosion................................
................................ ...................... 3-3
Filiform Corrosion................................
................................ ....................... 3-5
Intergranular Corrosion................................
................................ ................ 3-5
Exfoliation Corrosion
................................ ................................ .................. 3-6
Pitting Corrosion
................................ ................................ ......................... 3-6
Uniform Etch Corrosion................................
................................ ............... 3-6
Stress Corrosion Cracking
................................ ................................ ........... 3-7
Fatigue Corrosion
................................ ................................ ........................ 3-7
Fretting Corrosion................................
................................ ........................ 3-8
Crevice Corrosion................................
................................ ........................ 3-8
Section
IV.
4.1
4.2
4.2.1
Title ................................ ................................ ................................ ........... Page
CORROSION REMOVAL AND TREATMENT
................................ ........ 4-1
General................................
................................ ................................ ........ 4-1
Aluminum and Aluminum Alloys................................
................................ . 4-1
General................................
................................ ................................ ........ 4-1
TM-584C
4.2.2
4.2.3
4.2.4
4.2.4.1
4.2.4.2
4.2.5
4.3
4.3.1
4.3.2
4.3.3
4.3.3.1
4.3.4
4.3.4.1
4.3.4.2
4.3.4.3
4.4
4.4.1
4.4.2
4.4.3
4.4.3.1
4.4.3.2
4.4.4
4.5
4.6
4.6.1
4.6.2
4.6.3
4.6.4
4.6.4.1
4.6.4.2
V.
5.1
5.2
5.2.1
5.2.2
Section
5.2.3
5.2.4
5.2.5
5.2.5.1
5.2.5.2
5.2.6
5.2.6.1
5.2.6.2
5.3
5.3.1
5.3.2
Cleaning To Remove Foreign Matter................................
........................... 4-1
Corrosion Removal................................
................................ ...................... 4-2
Surface Treatment................................
................................ ........................ 4-2
Application of Chemical Conversion Coating................................
.............. 4-2
Application of Paint System................................
................................ ......... 4-3
Contact With Dissimilar Materials
................................ ............................... 4-3
Carbon Steel and Low-Alloy Steel................................
............................... 4-3
General................................
................................ ................................ ........ 4-3
Cleaning To Remove Foreign Matter................................
........................... 4-4
Paint Stripping (When Required)................................
................................ . 4-4
Chemical Paint Stripping
................................ ................................ ............. 4-4
Corrosion Removal................................
................................ ...................... 4-4
Phosphoric Acid Base (Brush-On Method)................................
.................. 4-4
Phosphoric Acid Base (Immersion Method)................................
................. 4-5
Alkaline Corrosion Remover (Immersion Method)
............................... ....... 4-5
.
Stainless-Steel Alloys................................
................................ .................. 4-6
General................................
................................ ................................ ........ 4-6
Cleaning To Remove Foreign Matter................................
........................... 4-6
Corrosion Removal................................
................................ ...................... 4-6
Mechanical Method
................................ ................................ ..................... 4-6
Chemical Method................................
................................ ......................... 4-6
Application of Protective Coating................................
................................ 4-8
Copper and Copper-Base Alloys................................
................................ .. 4-8
Plated Surfaces
................................ ................................ ............................ 4-8
General................................
................................ ................................ ........ 4-8
Cleaning To Remove Foreign Matter................................
........................... 4-8
Paint Stripping (When Required)................................
................................ . 4-8
Corrosion Removal and Treatment of Plated Surfaces
............................... .. 4-8
.
Zinc- and Aluminum-Plated Surfaces................................
........................... 4-8
Chromium, Nickel, Copper, and Tin Plate
................................ ................... 4-9
TREATMENT OF TYPICAL AREAS
................................ ........................ 5-1
General................................
................................ ................................ ........ 5-1
Communications, Electronic, and Associated Electrical
Equipment
................................ ................................ ................................ ... 5-1
General................................
................................ ................................ ........ 5-1
Enclosures Purges for Hazard Protection
................................ ...................... 5-1
Title ................................ ................................ ................................ ........... Page
Enclosures Intermittently Purgedfor Hazard Protection...............................
5-2
Enclosures Not Purged for Hazard Protection................................
.............. 5-3
Coating of Communications, Electronic, and Associated
Equipment
................................ ................................ ................................ ... 5-3
Items To Be Treated................................
................................ ..................... 5-4
Items Not To Be Treated With Conformal Coating................................
...... 5-5
Electrical Connectors................................
................................ ................... 5-7
Potting and Molding
................................ ................................ .................... 5-7
Lubricating Connectors................................
................................ ................ 5-8
Carbon Steel Structures................................
................................ ................ 5-8
General................................
................................ ................................ ........ 5-8
Typical Problem Areas................................
................................ ................. 5-8
TM-584C
5.3.2.1
5.3.2.2
5.3.2.3
5.3.2.4
5.3.2.5
5.3.2.6
5.3.2.7
5.3.2.8
5.4
5.4.1
5.4.2
5.4.2.1
5.4.3
5.4.4
5.5
5.5.1
5.5.2
5.6
5.6.1
5.6.2
5.6.3
5.6.4
APPENDIX A
Sharp Edges................................
................................ ................................ . 5-8
Back-To-Back Structures (Faying Surfaces)
............................... ................. 5-8
.
Nuts and Bolts
................................ ................................ ............................. 5-8
Tubular Structural Steel................................
................................ ............... 5-8
Water Traps................................
................................ ................................ . 5-9
Unistrut Channels
................................ ................................ ........................ 5-9
Tube Clamps
................................ ................................ ............................... 5-9
Galvanized Steel................................
................................ ........................ 5-10
Stainless-Steel Components................................
................................ ....... 5-10
General................................
................................ ................................ ...... 5-10
Stainless-Steel Tubing Assemblies................................
............................. 5-10
Application of Protective Coatings................................
............................. 5-10
Stainless-Steel Bellows................................
................................ .............. 5-11
Stainless-Steel Pipe, Flange Bolts, and Nuts................................
.............. 5-12
Aluminum Alloy Pipe and Tubing................................
.............................. 5-12
General................................
................................ ................................ ...... 5-12
Corrosion Treatment................................
................................ .................. 5-12
Miscellaneous................................
................................ ............................
5-12
Steel Cabling
................................ ................................ ............................. 5-12
Piano-Type Hinges
................................ ................................ .................... 5-13
Adjustable Parts................................
................................ ......................... 5-13
Bare Metal Piston Surfaces................................
................................ ........ 5-13
GALVANIC SERIES IN SEA WATER
................................ ...................... A-1
ABBREVIATIONS AND ACRONYMS
cm
CP
DOD
gal
GN2
HF
HNO3
in
IVD
kg
KSC
ksi
MIL
m3
mm
MPa
NACE
NH4HF2
centimeter
cathodic protection
Department of Defense
gallon
gaseous nitrogen
hydrofluoric acid
nitric acid
inch
ion vapor deposition
kilogram
John F. Kennedy Space Center
kips per square inch
military
cubic meter
millimeter
megapascal
National Association of Corrosion Engineers
ammonium bifluoride

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin