TO 1-1-700 - Robins Air Force Base

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TO 1-1-700 (CRES), lead, ceramic, glass, or acid resistant rubber; and they must be provided with an adequate lateral exhaust ventilation system. Part holding racks must be manufactured from either stainless steel (CRES) or Monel. The proper conditions (i.e., time, temperature, and acid concentration) for the process shall be determined by the same test procedure outlined in paragraph 11.13.4.2.3.3 in this manual using test panels made from the same material being treated. The directions for the application and use of this material are found in Chapter 5 of TO 1-1-691. 11.13.6 Titanium and Titanium Based Alloys. These paragraphs outline chemical corrosion removal procedures for titanium and titanium alloy parts and assemblies. Table 5-11 in Chapter 5 of TO 1-1-691 provides procedures for removing specific types of corrosion. 11.13.6.1 Preparation. If the corroded area is contaminated with grease, oil, dirt, or other foreign materials; clean the area per Chapter 7 of this manual. a. Protect adjacent unaffected areas not being treated by masking to prevent damage from scale, chips, corrosion products, or chemicals. b. If present, remove gray or black oxides by an appropriate mechanical method in this chapter. A-A-59105 (O-N-350), NITRIC ACID 4 Titanium is susceptible to hydrogen embrittlement in acid solutions. Therefore, acid pickling shall be used only when other corrosion methods are not adequate. Competent operators must be assigned to monitor the process. 11.13.6.2.1 Acid Pickling Solutions. This process is restricted to DEPOT LEVEL maintenance only. An acid pickling solution for removing corrosion from removed titanium and titanium alloy parts consists of a mixture of 20% by volume, A-A-59105 (O-N-350), Nitric Acid, and 3% by volume, MIL-A-24641, Hydrofluoric Acid, in water. This solution will remove most oxide coatings from titanium, provided the scale was formed at temperatures below 1000 °F (538 °C) by immersing them in the solution. As noted in paragraph 11.13.6.1, step b, gray or black oxides which form at temperatures above 1000 °F (538 °C) should be removed by an appropriate mechanical method in this chapter, such as abrasive blasting, prior to the acid pickling to prevent pitting of the titanium. The directions for the application and use of these materials are found in Chapter 5 of TO 1-1-691. 11.13.6.2.2 SAE AMS-1640 (MIL-C-38334) Corrosion Removal Compound Solutions. This is the same material used to remove corrosion from aluminum alloy surfaces, and it may also be used to remove corrosion from titanium and titanium alloy assemblies and/or on equipment surfaces. Refer to paragraph 11.13.1.2.1 in this manual and Chapter 5 in TO 1-1- 691. The procedure for application and use of this corrosion removal compound to remove corrosion products/oxides from titanium and titanium alloy surfaces is the same as it is for aluminum alloy surfaces. Refer to paragraph 11.13.1.2.1.1 in this manual and Chapter 5 in TO 1-1-691. MIL-A-24641, ACID, HYDROFLUORIC 17 MIL-DTL-81706 (ALODINE), COATING, CHEMICAL CONVERSION 23 SAE AMS-1640 (MIL-C-38334), CORROSION REMOVING COMPOUND 60 11.13.6.2 Chemical Corrosion Removal Materials for Titanium and Titanium Based Alloys. There are two types of chemical solutions used for corrosion removal from titanium and titanium based alloys: an acid pickling solution of A-A-59105 (O-N-350), Nitric Acid, and MIL-A-24641, Hydrofluoric Acid, in water; and an SAE AMS-1640 (MIL-C- 38334) corrosion removing compound solution. 11.13.6.3 Application of Organic Coatings. Titanium and titanium alloys do not normally require a paint system for corrosion protection. Where organic finishes are required for camouflage purposes, for continuity with the finish system on surrounding surfaces, or to provide a barrier to prevent contact with a dissimilar anodic material, prepare the titanium or titanium alloy surface for painting by applying a thixotropic MIL- DTL-81706/MIL-DTL-5541, Class 1A chemical chromate conversion coating solution per Section II of Chapter 5 in TO 1-1- 691. Apply the organic finish system specified in the applica- 11-20 Change 1
TO 1-1-700 ble system specific equipment maintenance manual and/or engineering drawing and TO 35-1-3 for support equipment (SE) using TO 1-1-8 for application procedures. 11.13.7 Plated and Phosphate Surfaces. The following paragraphs outline chemical corrosion removal procedures for removing corrosion from plated and phosphate surfaces. Table 11-6 provides guidelines for touch-up of corroded areas, but where an organic finish on the plated or phosphate part is specified and/or required for engineering or other reasons, the table can be used as a guide for treating the entire surface of the plated or phosphate parts. Chemical corrosion removal using acid type chemical corrosion/rust removers is recommended for use where there is no danger of the chemicals becoming entrapped in crevices or recesses. They are intended for brush application following removal of heavy corrosion by an appropriate mechanical means in this chapter, to remove the remaining red rust and other types of corrosion from the base metal, and to condition the metal surface for better paint adhesion. Many platings and their corrosion products, such as copper, cadmium, and chromium are toxic. Take proper safety precautions to avoid inhalation or ingestion of residue created during corrosion removal operations. Wash hands thoroughly before eating, drinking or smoking after removing corrosion from plated surfaces. 11.13.7.1 Preparation. If the corroded area is contaminated by grease, oil, dirt, or other foreign materials; clean the area per Chapter 7 of this manual. Protect adjacent components and areas by masking to prevent damage from scale, chips, corrosion products, and the chemicals used. Table 11-6. Typical Chemical Corrosion Removal Procedures for Plated and Phosphate Surfaces Type of Corrosion Corrosion Removal Protective Finish * MIL-C-10578, COMPOUND, CORROSION REMOVING AND METAL CONDITIONING 20 Light corrosion of plating and base metal under and at breaks in cadmium or zinc platings Light corrosion of base metal under and at breaks in tin, chromium, nickel, or copper platings Heavy corrosion of base metal under and at breaks in cadmium, zinc, chromium, nickel, or copper platings Light to heavy corrosion of base metal under and at breaks in phosphate coatings Remove corrosion from plating and base metal with an abrasive paper, cloth, or mat. Complete corrosion removal and condition metal with MIL- C-10578, Type I wash-off, phosphoric acid base corrosion removing and conditioning compound (see paragraphs 11.13.7.2.1 and 11.13.3.1.6.1). Remove corrosion from the base metal, using an appropriate hand mechanical method in this chapter, followed by metal conditioning with MIL-C-10578, Type I wash-off, phosphoric acid base corrosion removing and conditioning compound (see paragraphs 11.13.7.3.1 and 11.13.3.1.6.1). As above Remove corrosion by method used for corrosion removal on the base metal Refer to TO 1-1-8 for application of protective finish. As above As above As above * Protective finish should be applied only when the service temperature of the part does not preclude use of an organic coating and/or where the film thickness of the coating will not impair the operation of the part. 11-21
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TO 1-1-700 TECHNICAL MANUAL CORROSI
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TO 1-1-700 TABLE OF CONTENTS Chapte
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TO 1-1-700 TABLE OF CONTENTS - CONT
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Page 13 and 14:
TO 1-1-700 LIST OF ILLUSTRATIONS -
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TO 1-1-700 FOREWORD 1. PURPOSE. The
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TO 1-1-700 List of Related Publicat
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TO 1-1-700 SAFETY SUMMARY 1. GENERA
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TO 1-1-700 AMS-G-6032, GREASE, PLUG
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TO 1-1-700 MIL-DTL-64159, COATING,
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TO 1-1-700 MIL-PRF-27617, GREASE, A
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TO 1-1-700 O-L-164, DRESSING, LEATH
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TO 1-1-700 MIL-T-81772, THINNER, PO
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TO 1-1-700 tronics equipment and th
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TO 1-1-700 cleaning situation, syst
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TO 1-1-700 c. Riveted joints shall
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TO 1-1-700 c. Remove and replace an
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TO 1-1-700 MIL-L-87177, LUBRICANT,
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TO 1-1-700 Figure 3-1. Simplified C
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TO 1-1-700 resistant, and also at t
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TO 1-1-700 is first noticeable as a
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TO 1-1-700 3.7.8 Oxygen Concentrati
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TO 1-1-700 Figure 3-14. Concentrati
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TO 1-1-700 Figure 3-17. Galvanic Se
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TO 1-1-700 Figure 3-20. Aluminum Su
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TO 1-1-700 3.8.7 CRES/Stainless Ste
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TO 1-1-700 3.9.10 Climate. Warm, mo
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TO 1-1-700 3.11 PREVENTATIVE MAINTE
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TO 1-1-700 CHAPTER 4 COMPOSITE AND
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TO 1-1-700 4.4.4.4 Glass parts shal
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TO 1-1-700 CHAPTER 5 PACKAGING (STO
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TO 1-1-700 extent of damage dependi
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TO 1-1-700 5.15 PRECAUTIONS FOR VCI
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TO 1-1-700 c. Secure the desiccant
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TO 1-1-700 Figure 5-8. Shock Isolat
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TO 1-1-700 Figure 5-9. Examples of
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TO 1-1-700 5.24.10 Rigid or Flexibl
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TO 1-1-700 CHAPTER 6 MOISTURE AND F
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TO 1-1-700 c. 6.2.6 Felt. Examine f
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TO 1-1-700 a. After first directing
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TO 1-1-700 6.4.5.14 Terminals, scre
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TO 1-1-700 NOTE • Authorized clea
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TO 1-1-700 Table 7-1. Cleaning of S
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TO 1-1-700 7.3.1.2.3 Portable, 45 g
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TO 1-1-700 Table 7-2. Common Milita
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TO 1-1-700 inactivity, storage, or
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TO 1-1-700 7.5.6.5.1 Grade 1 - A th
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TO 1-1-700 Table 7-4. Corrosion Pre
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TO 1-1-700 Table 7-5. Preservation
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TO 1-1-700 either case, MIL-PRF-269
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TO 1-1-700 MIL-PRF-85285, COATING,
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TO 1-1-700 c. Cadmium plated surfac
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TO 1-1-700 a. Scuff sand and feathe
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TO 1-1-700 7.7.7.2 If surface is no
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TO 1-1-700 7.7.9.2 Where only parti
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TO 1-1-700 7.8.1 Type I Application
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TO 1-1-700 Extend (Loctite) 32150 J
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TO 1-1-700 There are three ways to
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TO 1-1-700 vulnerable surfaces clea
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TO 1-1-700 Table 8-2. Materials, Th
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TO 1-1-700 Table 8-4. Electronic Cl
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TO 1-1-700 Table 8-5. Accessories o
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TO 1-1-700 Table 8-5. Accessories o
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TO 1-1-700 f. Devices with permanen
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TO 1-1-700 Table 8-7. Cleaning and
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TO 1-1-700 MIL-PRF-87937, CLEANING
Page 160 and 161: TO 1-1-700 of contamination). Maint
Page 162 and 163: TO 1-1-700 8.8.2 Protective Coating
Page 164 and 165: TO 1-1-700 • Tube clamps. • Min
Page 166 and 167: TO 1-1-700 a. For bonding/grounding
Page 168 and 169: TO 1-1-700 vertently destroy the mo
Page 170 and 171: TO 1-1-700 doors, and other corrosi
Page 173 and 174: TO 1-1-700 CHAPTER 10 CORROSION PRO
Page 175 and 176: TO 1-1-700 MIL-PRF-81733, SEALING A
Page 177 and 178: TO 1-1-700 d. After corrosion is re
Page 179 and 180: TO 1-1-700 (3) Stainless/CRES steel
Page 181 and 182: TO 1-1-700 10.9 WATER ENTRAPMENT AR
Page 183 and 184: TO 1-1-700 f. Shield equipment from
Page 185 and 186: TO 1-1-700 b. Use e-inch rivnuts of
Page 187 and 188: TO 1-1-700 10.17.3 If the plating s
Page 189: TO 1-1-700 Figure 10-16. Dissipatio
Page 192 and 193: TO 1-1-700 (2) If allowable damage
Page 194 and 195: TO 1-1-700 Table 11-1. Recommended
Page 196 and 197: TO 1-1-700 11.6 3M CO. SCOTCH-BRITE
Page 198 and 199: TO 1-1-700 11.11.2 Control of Mecha
Page 200 and 201: TO 1-1-700 11.12.2 Mechanical Damag
Page 202 and 203: TO 1-1-700 MIL-DTL-81706 (ALODINE),
Page 204 and 205: TO 1-1-700 11.13.2.3 Application of
Page 206 and 207: TO 1-1-700 only when there is no da
Page 208 and 209: TO 1-1-700 NOTE SEMCO PASA-JELL 101
Page 212 and 213: TO 1-1-700 11.13.7.2 Treatment of C
Page 214 and 215: TO 1-1-700 MIL-A-46106, ADHESIVE/SE
Page 216 and 217: TO 1-1-700 Table 12-1. Sealing Comp
Page 224 and 225: TO 1-1-700 used to apply sealants i
Page 226 and 227: TO 1-1-700 Figure 12-2. Sealant App
Page 228 and 229: TO 1-1-700 Figure 12-4. Rivet Appli
Page 230 and 231: TO 1-1-700 Figure 12-6. Sealant Inj
Page 232 and 233: TO 1-1-700 below and adhere very po
Page 234 and 235: TO 1-1-700 Table 12-2. Time Require
Page 236 and 237: TO 1-1-700 Table 12-2. Time Require
Page 238 and 239: TO 1-1-700 of 20 to 25 seconds in a
Page 240 and 241: TO 1-1-700 d. Remove all uncured se
Page 246 and 247: TO 1-1-700 Figure 12-12. Typical Me
Page 248 and 249: TO 1-1-700 may be used for low temp
Page 250 and 251: TO 1-1-700 Figure 12-14. Sealing Pr
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TO 1-1-700 - Robins Air Force Base

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