TO 1-1-700 - Robins Air Force Base

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TO 1-1-700 proof protection) and Method 50 (water vapor proof protection with desiccant). 5.10.2 MIL-STD-2073-1. When there are no specific instructions, or for complete details on methods of preservation, general requirements, and suggested methods of application, refer to MIL-STD-2073-1 for a listing of the groups and their usage. 5.11 CONTACT PRESERVATIVES FOR METALS. Figure 5-3. Corroded Tripod 5.8 BASIC PRINCIPLES OF PRESERVATIVE PRO- TECTION. Preservatives are materials that are applied to, or come in contact with, items to protect them from deterioration resulting from exposure to environmental conditions during shipment and storage. 5.8.1 Preservatives. Preservatives should be applied whenever items require protection against deterioration and corrosion. 5.8.2 Barriers. Some preservatives protect items by providing a barrier against moisture, air, and other agents of corrosion and are known as contact preservatives. 5.8.3 Volatile Corrosion Inhibitors. Other preservatives protect items by releasing vapors which deposit an invisible protective film on the items. These materials are called volatile corrosion inhibitors (VCI). 5.9 CLASSIFICATION OF PRESERVATIVES. There are preservatives for metals and for non-metals. Preservatives are classified on the basis of the material to be preserved and are either permanent or temporary. Preservatives for metals are intended to protect items from corrosion and rusting while those used on non-metals are intended to protect against deterioration by hardening, drying, aging, decaying, rotting, or decomposing. 5.10 METHODS OF PRESERVATION. A Special Packaging Instruction (SPI) or Technical Order (TO) prescribing a method of preserving a particular item or group of items takes precedence over general guidelines. 5.10.1 Preservation Methods. Preservation methods are standardized and have become generally known as Method 10 (physical protection), Method 20 (preservative coating only), Method 30 (waterproof protection), Method 40 (water vapor Many finished metal items require a preservative coating that is easily removed and yet will not rub or abrade off. Several temporary preservatives have been developed by adding water displacing compounds and inhibiting compounds to lubrication oils, greases, and hydraulic fluids. These preservatives have different consistencies and require different methods of application. Information on the various types of preservatives can be found in MIL-STD-2073-1 and Chapter 7 of this manual where the various groups with their usages are listed. 5.12 VOLATILE CORROSION INHIBITORS (VCI). VCI compounds are white crystalline powders similar in appearance to fine talc. In some instances, the crystals are used directly for preserving interiors of engines and other applications, but the most widely used types of these materials are in the form of coated and/or impregnated papers. 5.12.1 VCI Coatings. As a coating, the chemical is mixed with casein that acts as a bonding agent or adhesive to stick the crystals to the paper surface. 5.12.2 Impregnated Papers. For impregnated papers, the paper is soaked in a solution containing a dissolved or suspended inhibitor; and when the liquid evaporates, the crystals are left impregnated in the fibers of and on the surface of the paper. 5.13 LIMITATIONS OF VCI. VCI materials will not protect all metals from corrosion. For certain metals, VCIs tend to increase the rate of corrosion. VCI materials must not be used to protect any assemblies containing optical systems or precision moving parts that have been coated with a preservative or lubricant, unless otherwise specified. This does not include items protected with bonded films, such as a molybdenum disulfide dry film lubricant. 5.14 EFFECT OF HEAT, LIGHT, ACIDS, AND STRONG ALKALIS ON VCIS. VCI materials lose their effectiveness as the temperature increases and they decompose if exposed to direct sunlight for extended periods. They also decompose in the presence of acids or strong alkali. 5-4
TO 1-1-700 5.15 PRECAUTIONS FOR VCI USE. When a VCI is used with items, assemblies, and subassemblies containing cadmium, zinc plating, zinc alloys, magnesium alloys, lead alloys, and alloys of other metals including solders and brazing alloys, plastics, painted parts, or components of natural or synthetic rubber, precautions must be taken. Assemblies containing parts made of these materials should not be packed with a VCI until proof is established that they have passed the compatibility test required by MIL-I-8574. Direct contact of a VCI with nonferrous metals except aluminum and aluminum alloys should be avoided unless specific permission had been granted. 5.16 VCI USE. VCI materials offer effective protection to iron and steel that is equal to or better than that provided by the more commonly used contact preservative compounds. They provide good protection to areas where it would be impossible or impractical to apply a grease or oil type preservative to an item. Such areas as small holes, blind holes, cups, cavities, or threads are also protected by VCI vapors. 5.16.1 VCI Protection Usage. VCIs offer a choice of degrees of protection varying from temporary protection to items during processing operations, through protection for shipment and immediate use, to complete protection for longterm storage or overseas shipment. 5.16.2 VCI Usage Benefits. The simplicity and ease of application of VCI's result in monetary savings by reducing labor and time in the complicated preserving and cleaning operations normally associated with the use of grease and oil type preservatives. 5.17 VCI PACKAGING MATERIALS SPECIFICATIONS. VCI materials may include ingredients irritating to the eyes and skin of some people. Do not rub or wipe eyes while handling VCI treated material. After handling, wash hands thoroughly with soap and water. These materials are covered in several specifications and are available in the forms of treated kraft paper, barrier materials, paperboard wrapping, cushioning, oils, crystalline powders, and other types. 5.17.1 MIL-PRF-3420, Packaging Materials, Volatile Corrosion Inhibitor Treated, Opaque. This specification establishes the requirements for materials (kraft paper, barrier materials, paperboard wrapping, and cushioning) which are treated with a corrosion inhibitor. The treated materials come in two forms, three classes, and seven styles. Forms “a” and “b” represent carrier materials which have been coated or impregnated respectively with corrosion inhibitors. The three classes relate to the strength of the material, and the seven styles relate to the composition of the material. 5.17.2 MIL-PRF-22019, Barrier Materials, Transparent, Flexible, Sealable, VCI Treated. This material is available in two types. Type I is intended for use where a heat-sealable, VCI treated barrier material is required. Type II is used where either production processing or custom hand processing requires a cold-sealable, VCI treated barrier material. 5.17.3 MIL-B-22020, Bags, Transparent, Flexible, Sealable, VCI Treated. These bags come in two classes: 5.17.3.1 Class 1 is intended for use where heat-sealable, transparent, VCI treated bags are required. They are made from barrier material qualified under Type I of MIL-PDF- 22019. 5.17.3.2 Class 2 bags are intended for use where pressure cold-sealable, transparent, VCI treated bags are required and are fabricated from Type II material of MIL-PRF-22019. They are available in eleven sizes, from as small as 2-1/2 in. x 3 in. to as large as 10 in. x 13 in. 5.17.4 MIL-I-22110, Inhibitors, Corrosion, Volatile, Crystalline Powder. VCI crystals provide corrosion protection for most metals under specific conditions. This VCI can be sprayed, atomized or dusted over the entire surface of the item. See MIL-I-8574 for application and use criteria. 5.17.5 Other Forms of VCIs. Although specifications have not yet been issued covering some other forms of VCIs available to industry, they may be used if permitted by the military activity concerned. 5.17.5.1 These are tablet forms of VCIs which can be used in automated packaging of small items such as bolts, pins, dowels, screws, drills, taps and dies, etc. 5.17.5.2 VCI crystals compounded with a non-caking agent and supplied in 2-ounce cotton bags: VCI treated kraft paper, spirally-wound fiber cans (MIL-C-3955), fiberboard boxes coated with a VCI; and aerosol type VCIs dissolved in alcohol are also available. 5.18 APPLICATION OF VCI. The following procedures should be used when applying VCI for the protection of metals. 5-5
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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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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
Page 19 and 20: TO 1-1-700 SAFETY SUMMARY 1. GENERA
Page 21 and 22: TO 1-1-700 AMS-G-6032, GREASE, PLUG
Page 23 and 24: TO 1-1-700 MIL-DTL-64159, COATING,
Page 25 and 26: TO 1-1-700 MIL-PRF-27617, GREASE, A
Page 27 and 28: TO 1-1-700 O-L-164, DRESSING, LEATH
Page 29: TO 1-1-700 MIL-T-81772, THINNER, PO
Page 32 and 33: TO 1-1-700 tronics equipment and th
Page 34 and 35: TO 1-1-700 cleaning situation, syst
Page 36 and 37: TO 1-1-700 c. Riveted joints shall
Page 38 and 39: TO 1-1-700 c. Remove and replace an
Page 40 and 41: TO 1-1-700 MIL-L-87177, LUBRICANT,
Page 42 and 43: TO 1-1-700 Figure 3-1. Simplified C
Page 44 and 45: TO 1-1-700 resistant, and also at t
Page 46 and 47: TO 1-1-700 is first noticeable as a
Page 48 and 49: TO 1-1-700 3.7.8 Oxygen Concentrati
Page 50 and 51: TO 1-1-700 Figure 3-14. Concentrati
Page 52 and 53: TO 1-1-700 Figure 3-17. Galvanic Se
Page 54 and 55: TO 1-1-700 Figure 3-20. Aluminum Su
Page 56 and 57: TO 1-1-700 3.8.7 CRES/Stainless Ste
Page 58 and 59: TO 1-1-700 3.9.10 Climate. Warm, mo
Page 60 and 61: TO 1-1-700 3.11 PREVENTATIVE MAINTE
Page 63 and 64: TO 1-1-700 CHAPTER 4 COMPOSITE AND
Page 65 and 66: TO 1-1-700 4.4.4.4 Glass parts shal
Page 67 and 68: TO 1-1-700 CHAPTER 5 PACKAGING (STO
Page 69: TO 1-1-700 extent of damage dependi
Page 73 and 74: TO 1-1-700 c. Secure the desiccant
Page 75 and 76: TO 1-1-700 Figure 5-8. Shock Isolat
Page 77 and 78: TO 1-1-700 Figure 5-9. Examples of
Page 79 and 80: TO 1-1-700 5.24.10 Rigid or Flexibl
Page 81 and 82: TO 1-1-700 CHAPTER 6 MOISTURE AND F
Page 83 and 84: TO 1-1-700 c. 6.2.6 Felt. Examine f
Page 85 and 86: TO 1-1-700 a. After first directing
Page 87: TO 1-1-700 6.4.5.14 Terminals, scre
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Page 92 and 93: TO 1-1-700 Table 7-1. Cleaning of S
Page 102 and 103: TO 1-1-700 7.3.1.2.3 Portable, 45 g
Page 104 and 105: TO 1-1-700 Table 7-2. Common Milita
Page 106 and 107: TO 1-1-700 inactivity, storage, or
Page 108 and 109: TO 1-1-700 7.5.6.5.1 Grade 1 - A th
Page 110 and 111: TO 1-1-700 Table 7-4. Corrosion Pre
Page 112 and 113: TO 1-1-700 Table 7-5. Preservation
Page 114 and 115: TO 1-1-700 either case, MIL-PRF-269
Page 116 and 117: TO 1-1-700 MIL-PRF-85285, COATING,
Page 118 and 119: 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
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TO 1-1-700 of contamination). Maint
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TO 1-1-700 8.8.2 Protective Coating
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TO 1-1-700 • Tube clamps. • Min
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TO 1-1-700 a. For bonding/grounding
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TO 1-1-700 vertently destroy the mo
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TO 1-1-700 doors, and other corrosi
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TO 1-1-700 CHAPTER 10 CORROSION PRO
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TO 1-1-700 MIL-PRF-81733, SEALING A
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TO 1-1-700 d. After corrosion is re
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TO 1-1-700 (3) Stainless/CRES steel
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TO 1-1-700 10.9 WATER ENTRAPMENT AR
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TO 1-1-700 f. Shield equipment from
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TO 1-1-700 b. Use e-inch rivnuts of
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TO 1-1-700 10.17.3 If the plating s
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TO 1-1-700 Figure 10-16. Dissipatio
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TO 1-1-700 (2) If allowable damage
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TO 1-1-700 Table 11-1. Recommended
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TO 1-1-700 11.6 3M CO. SCOTCH-BRITE
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TO 1-1-700 11.11.2 Control of Mecha
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TO 1-1-700 11.12.2 Mechanical Damag
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TO 1-1-700 MIL-DTL-81706 (ALODINE),
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TO 1-1-700 11.13.2.3 Application of
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TO 1-1-700 only when there is no da
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TO 1-1-700 NOTE SEMCO PASA-JELL 101
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TO 1-1-700 (CRES), lead, ceramic, g
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TO 1-1-700 11.13.7.2 Treatment of C
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TO 1-1-700 MIL-A-46106, ADHESIVE/SE
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TO 1-1-700 Table 12-1. Sealing Comp
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TO 1-1-700 used to apply sealants i
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TO 1-1-700 Figure 12-2. Sealant App
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TO 1-1-700 Figure 12-4. Rivet Appli
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TO 1-1-700 Figure 12-6. Sealant Inj
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TO 1-1-700 below and adhere very po
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TO 1-1-700 Table 12-2. Time Require
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TO 1-1-700 Table 12-2. Time Require
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TO 1-1-700 of 20 to 25 seconds in a
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TO 1-1-700 d. Remove all uncured se
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TO 1-1-700 Figure 12-12. Typical Me
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TO 1-1-700 may be used for low temp
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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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