TO 35-1-3 - Robins Air Force Base

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TO 35-1-3 • Gas Tungsten-Arc (TIG). When fillers are required, use Type 410 with 0.08% Max C or W 414 Ti. Helium shielding is preferred over argon shielding. 6.4.3.3 Do not coat the AISI 409 with any of the zinc-rich paints. The zinc in the paints can embrittle the stainless under certain conditions. The use of AISI 409 that is in contact with zinc-rich painted carbon steel (as in the Hot Section) is acceptable. 6.5 SEALING. Mating surfaces where moisture could enter from the top or horizontal will be sealed with sealant MIL-PRF-81733 (cold section) or sealant SAE-AMS-3374, Type I (hot section) after primer application and before topcoat application. 6.6 PRIMERS. Respirator with organic vapor cartridges is required for all painting/priming operations unless Bioenvironmental Engineer has approved the work place for no respirator protection. 6.6.1 Organic Zinc-Rich Primers. The primer will be one of the previously described primers as identified in Chapter 3. 6.6.1.1 Dry film thickness should be 3.0 mils and approximately 5.0 mils wet. 6.6.1.2 Prior to repainting the exhaust area (or initiating a contract for repaint) it is important to know the surface temperature of the exterior walls of the exhaust section. Approximate temperatures can be obtained with the use of Wahl Temp-Plate, Wahl Instruments, Inc., Culver City, California (800) 421-2853, or equivalent. If the temperature is below 300 °F this area shall be coated with Cold Section finishes. 6.6.2 MIL-PRF-23236, Type I, Class 3. MIL-PRF-23236, Type I, Class 3 is an inorganic zinc-rich primer that is usually furnished as two or three components. 6.6.2.1 Follow the manufacturers' instructions for mixing, thinning, and application. 6.6.2.2 Only those products listed on QPD-23236 are authorized. 6.6.2.3 During application of MIL-PRF-23236 primer, the product should be constantly agitated to prevent the zinc dust from settling. 6.6.3 Heat Resistant Primer Briner 2905. Instructions for applying Briner 2905 are as follows: NOTE Briner 4765 or Briner 2905 shall be used as a primer for Briner 2986. 6.6.3.1 Briner 2905 is two component, silver, heat resistant silicone coating. The zinc powder must be mixed into the SE before using. 6.6.3.2 Thinning should not be necessary, but the coating can be thinned with Briner 70 Silicone Reducer to facilitate spray painting. 6.6.3.3 Apply Briner 2905 by conventional spray. De Vilbiss MBC-510 Gun, 704 Air cap with E needle and Tip or, the equivalent in Binks. 6.6.3.4 Drying time is one hour (dust free), but will require 400 °F temperature before it cures completely. Curing with topcoat applied can be accomplished by normal operation of the suppressor. 6.6.3.5 Apply one coat with a dry film thickness of 2.5 mils. A dry film of 2.5 mils will require a 5.0 mil wet film thickness. 6.6.3.6 Briner coatings are available from: Briner Paint Mfg. Company 3713 Agnes Street Corpus Christi, TX 78405 (512) 884-4804 6.6.4 Heat Resistant Silicone Coating - Briner 2986. Instructions for applying Briner 2986 are as follows: NOTE Briner 2986 shall be used only as a topcoat for Briner 2905 or Briner 4765. 6.6.4.1 Briner 2986 is a one component, black, heat resistant silicone coating. The material is ready mixed, but should be thoroughly stirred before use. 6.6.4.2 Thinning can be accomplished using Briner 70 Silicone Reducer. 6.6.4.3 Apply Briner 2986 by brush, conventional spray, or airless spray. 6-2 Change 8
TO 35-1-3 Conventional Airless 78, 765, 704 Air cap with E or EX needle and tip. De Vilbiss MBC-510 Gun or the equivalent in Binks Airless 0.017-inch tip at 1,700 lbs 6.6.6 High Temperature Resistant Silicone Coating Thurmalox 270-18. Instructions for applying Thurmalox 270-18 are as follows: NOTE Thurmalox 270-18 shall be used as a topcoat for MIL-PRF-23236, Type I. 6.6.4.4 Briner 2986 will not cure without 350 - 400 °F for 1 hour. The coating will not cure during normal operation of the suppressor. 6.6.4.5 Two coats at 1.5 mils each of dry film are recommended. A dry film of 1.5 mils will require a 4.5 mil wet film thickness. 6.6.5 High Temperature Resistant Silicone Coating - Briner 4765. Briner 4765 is a two component, gray, high temperature resistant silicone coating. 6.6.5.1 The zinc powder must be mixed into the SE before using. 6.6.5.2 Thinning should not be necessary but Briner 4765 can be thinned with Briner 70 silicone reducer. 6.6.5.3 Apply Briner 4765 by conventional spray. De Vilbiss MBC-510 Gun, 704 Air cap, an E needle and tip or the equivalent in Binks. 6.6.5.4 Drying time is one hour (dust free). Curing with topcoat applied can be accomplished by normal operation of the suppressor. 6.6.5.5 Apply one coat of Briner 4765 with a dry film thickness of 2.5 mils; this will require a wet film thickness of 5.0 mils. 6.6.6.1 Thurmalox 270-18 is low-sheen green, one-component, heat resistant coating of silicone resin. 6.6.6.2 Mix to a uniform consistency by ordinary stirring. 6.6.6.3 Thinning can be accomplished using Thurmalox 295 thinner. Do not use more than 1 1/2 pints per gallon. 6.6.6.4 Apply Thurmalox 270-18 by airless, conventional, or electro-static spray equipment. The following equipment is recommended by the manufacturer as a guide: Spray gun Air hose *Fluid hose Air cap 704 DeVilbiss P-MBC or JGA 5/16" (I.D.) 3/8" (I.D.) Fluid nozzle FX (0.042") Pot pressure Atomizing pressure Needle adjustment Distance from work 15 - 20 lbs 40 - 45 lbs Half open 8 - 10 in * Smaller hose diameters, or hose lengths greater than 25 feet, may make it necessary to increase pressures. 6.6.6.5 Drying time at 77 °F, set to touch, is 30 minutes. 6.6.6.6 Dry film thickness should be 1.0 mil. 6-3/(6-4 blank)
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TO 35-1-3 TECHNICAL MANUAL CORROSIO
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TO 35-1-3 TABLE OF CONTENTS Chapter
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TO 35-1-3 TABLE OF CONTENTS - Conti
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TO 35-1-3 LIST OF ILLUSTRATIONS Num
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TO 35-1-3 FOREWORD 1. PURPOSE. The
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TO 35-1-3 SAFETY SUMMARY 1. GENERAL
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CHAPTER 1 CORROSION THEORY, IDENTIF
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TO 35-1-3 Table 1-1. Galvanic Serie
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TO 35-1-3 sion. Improper dilution o
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TO 35-1-3 1.6.7.3 When dry, some mi
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TO 35-1-3 Figure 1-7. Example of Pi
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TO 35-1-3 Figure 1-11. Illustration
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TO 35-1-3 1.8 METALS AFFECTED BY CO
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TO 35-1-3 CHAPTER 2 CLEANING 2.1 GE
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TO 35-1-3 E Table 2-1. Wash Interva
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TO 35-1-3 Table 2-1. Wash Interval
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TO 35-1-3 2.1.5.3 Immersion in clea
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TO 35-1-3 2.1.6.2.10 MIL-PRF-87937,
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TO 35-1-3 Table 2-2. Authorized Cle
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TO 35-1-3 2.1.7.2 Cleaning Compound
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TO 35-1-3 removal and surface treat
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TO 35-1-3 2.2.6.1 Authorized HPW Eq
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TO 35-1-3 CHAPTER 3 PAINTING, SEALI
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TO 35-1-3 3.3.2.3.1 Unless otherwis
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TO 35-1-3 Table 3-1. Authorized Coa
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TO 35-1-3 3.5.2.3 Air Force will ac
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TO 35-1-3 with AMS 3367, Class A or
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TO 35-1-3 3.11 MAINTENANCE STAND RA
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TO 35-1-3 b. Type III An ultra thin
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TO 35-1-3 Table 3-2. Pretreatment I
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TO 35-1-3 b. Azko Nobel 10P3-2 Akzo
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TO 35-1-3 removed prior to the fina
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TO 35-1-3 3.22.1 SE Undercoating Co
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TO 35-1-3 3.26.7 Wire Harness and C
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TO 35-1-3 4.2.3.4 Other optional in
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TO 35-1-3 Figure 4-3. Sample Mobili
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TO 35-1-3 Legend for Figure 4-4. In
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TO 35-1-3 Legend for Figure 4-10. I
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TO 35-1-3 - Robins Air Force Base

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