ASTM E864-98e1
(Practice)Standard Practice for Surface Preparation of Aluminum Alloys to be Adhesively Bonded in Honeycomb Shelter Panels
Standard Practice for Surface Preparation of Aluminum Alloys to be Adhesively Bonded in Honeycomb Shelter Panels
SCOPE
1.1 This practice covers the preparation of clean uniform surfaces of aluminum alloys suitable for formation of durable adhesive bonds to nonmetallic honeycomb materials in the manufacture of sandwich panels for tactical shelters.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Note 1 of 5.2.
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e1
Designation: E 864 – 98 An American National Standard
Standard Practice for
Surface Preparation of Aluminum Alloys to Be Adhesively
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Bonded in Honeycomb Shelter Panels
This standard is issued under the fixed designation E 864; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
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e NOTE—An editorial change to 6.3.2.2 was made in August 2001.
1. Scope control of the materials used and the steps in the bonding
process. The preparation of the aluminum alloys to obtain
1.1 This practice covers the preparation of clean uniform
clean, uniform surfaces with appropriate characteristics is a
surfaces of aluminum alloys suitable for formation of durable
critical step. This practice describes how such surfaces can be
adhesive bonds to nonmetallic honeycomb materials in the
obtained.
manufacture of sandwich panels for tactical shelters.
1.2 This standard does not purport to address all of the
4. Apparatus
safety concerns, if any, associated with its use. It is the
4.1 General Processing:
responsibility of the user of this standard to establish appro-
4.1.1 All heated tanks shall be equipped with automatic
priate safety and health practices and determine the applica-
temperature controls and shall have means for agitation to
bility of regulatory limitations prior to use. For specific
prevent local overheating of the solution. Solutions may be
precautionary statements, see Note 1 of 5.2.
heated by any internal or external means that do not change
2. Referenced Documents their compositions. Steam shall not be introduced into any
solution. Compressed air introduced into any solution or
2.1 ASTM Standards:
equipment shall have been filtered to remove oil and moisture.
D 2674 Test Method for Analysis of Sulfochromate Etch
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4.1.2 Tanks shall be made from, or lined with, materials that
Solution Used in Surface Preparation of Aluminum
have no adverse effects on the solutions used or the parts being
D 3167 Test Method for Floating Roller Peel Resistance of
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treated. All tanks shall be of sufficient size to allow complete
Adhesives
immersion of the largest part or assembly to be treated.
E 865 Specification for Structural Film Adhesives for Hon-
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4.2 Rinse Tanks—Immersion rinse tanks shall be equipped
eycomb Sandwich Panels
with a means for skimming or overflowing or both to remove
E 866 Specification for Corrosion-Inhibiting Adhesive
surface contamination. The tanks shall be equipped with a
Primer for Aluminum Alloys to Be Adhesively Bonded in
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means for flushing hollow sections.
Honeycomb Shelter Panels
4.3 Rinses—Rinses, other than final rinses, shall be main-
2.2 APHA Standard:
tained in such a manner to prevent carryover of materials that
Sections 402, 403, and 408 of Standard Methods for the
would adversely affect the next solution.
Examination of Water and Waste Water (15th Edition,
4
1980)
5. Materials
3. Significance and Use 5.1 Water—Water used for makeup of processing solutions
and final rinsing shall be deionized water or shall meet the
3.1 Durable adhesive bonds to aluminum alloys can be
requirement of Table 1. Analyses shall be performed as often as
obtained reliably only through proper selection and careful
necessary to assure that the water meets the requirements.
Samples for analysis shall be collected at the processing tanks.
5.2 Etch Solution:
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This practice is under the jurisdiction of ASTM Committee E-6 on Performance
5.2.1 Method I, Sulfo-Chromate Etch (FPL)—The chemical
of Buildings and is the direct responsibility of Subcommittee E06.53 on Materials
and Processes for Durable Rigidwall Relocatable Structures. analysis of the etch solution shall be maintained at approxi-
Current edition approved April 10, 1998. Published June 1998. Originally
mately 30 parts by mass of water, ten parts by mass of sulfuric
published as E 864 – 82. Last previous edition E 864 – 96.
acid (sp gr 1.84), and one to four parts by mass of sodium
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Annual Book of ASTM Standards, Vol 15.06.
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dichromate. Prior to use, a minimum of 0.06 part by mass of
Annual Book of ASTM Standards, Vol 04.11.
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Available from the American Public Health Assn., 1015 15th St. N.W.,
dissolved 2024 aluminum shall be added.
Washington, DC 20005.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
E 864
TA
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