ASTM E864-08
(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
SIGNIFICANCE AND USE
Durable adhesive bonds to aluminum alloys can be obtained reliably only through proper selection and careful control of the materials used and the steps in the bonding process. The preparation of the aluminum alloys to obtain clean, uniform surfaces with appropriate characteristics is a critical step. This practice describes how such surfaces can be obtained.
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 a specific warning statement, see 5.2.1.
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Designation: E864 − 08
StandardPractice for
Surface Preparation of Aluminum Alloys to Be Adhesively
1
Bonded in Honeycomb Shelter Panels
This standard is issued under the fixed designation E864; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Significance and Use
3.1 Durable adhesive bonds to aluminum alloys can be
1.1 This practice covers the preparation of clean uniform
obtained reliably only through proper selection and careful
surfaces of aluminum alloys suitable for formation of durable
control of the materials used and the steps in the bonding
adhesive bonds to nonmetallic honeycomb materials in the
process. The preparation of the aluminum alloys to obtain
manufacture of sandwich panels for tactical shelters.
clean, uniform surfaces with appropriate characteristics is a
1.2 This standard does not purport to address all of the
critical step. This practice describes how such surfaces can be
safety concerns, if any, associated with its use. It is the
obtained.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Apparatus
bility of regulatory limitations prior to use. For a specific
4.1 General Processing:
warning statement, see 5.2.1.
4.1.1 All heated tanks shall be equipped with automatic
temperature controls and shall have means for agitation to
2. Referenced Documents
prevent local overheating of the solution. Solutions may be
2
2.1 ASTM Standards: heated by any internal or external means that do not change
their compositions. Steam shall not be introduced into any
D2674Methods ofAnalysis of Sulfochromate Etch Solution
solution. Compressed air introduced into any solution or
Used in Surface Preparation of Aluminum
equipment shall have been filtered to remove oil and moisture.
D3167Test Method for Floating Roller Peel Resistance of
4.1.2 Tanksshallbemadefrom,orlinedwith,materialsthat
Adhesives
havenoadverseeffectsonthesolutionsusedorthepartsbeing
E865Specification for Structural Film Adhesives for Hon-
treated. All tanks shall be of sufficient size to allow complete
eycomb Sandwich Panels
immersion of the largest part or assembly to be treated.
E866 Specification for Corrosion-Inhibiting Adhesive
Primer forAluminumAlloys to BeAdhesively Bonded in
4.2 Rinse Tanks—Immersion rinse tanks shall be equipped
Honeycomb Shelter Panels
with a means for skimming or overflowing or both to remove
3
surface contamination. The tanks shall be equipped with a
2.2 APHA Standard:
means for flushing hollow sections.
APHAStandard Methods for the Examination of Water and
Waste Water (15th Edition, 1980), Sections 402, 403, and
4.3 Rinses—Rinses, other than final rinses, shall be main-
408
tained in such a manner to prevent carryover of materials that
would adversely affect the next solution (for example, using a
fog water rinse as the aluminum part/assembly is being
1 withdrawn from the rinse tank).
This practice is under the jurisdiction of ASTM Committee E06 on Perfor-
mance of Buildings and is the direct responsibility of Subcommittee E06.53 on
Materials and Processes for Durable Rigidwall Relocatable Structures.
5. Materials
Current edition approved Nov. 1, 2008. Published December 2008. Originally
approved in 1982. Last previous edition approved in 2003 as E864–03. DOI:
5.1 Water—Water used for makeup of processing solutions
10.1520/E0864-08.
and final rinsing shall be deionized water or shall meet the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
requirementofTable1.Analysesshallbeperformedasoftenas
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on necessary to assure that the water meets the requirements.
the ASTM website.
Samples for analysis shall be collected at the processing tanks.
3
Available from theAmerican Public HealthAssociation (APHA), 800 I Street,
NW, Washington, DC 20001-3710, http://www.apha.org. 5.2 Etch Solution:
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959. United States
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E864 − 08
TABLE 1 Requirements for Water to Be Used in Solutions and
6.3.1 Sulfo-Chromate Etch—Perform the analyses in accor-
Rinses
dance with Methods D2674.
Requirements
6.3.2 Sulfo-Ferric Etch—Perform the analyses in accor-
Min Max
dance with 6.3.2.1 and 6.3.2.2.
pH 6.0 8.0
6.3.2.1 SulfuricAcid—Pipet a 1-mL(0.03-oz) sample
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:E864–03 Designation:E864–08
Standard Practice for
Surface Preparation of Aluminum Alloys to Be Adhesively
1
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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 Thispracticecoversthepreparationofcleanuniformsurfacesofaluminumalloyssuitableforformationofdurableadhesive
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 5.2For a specific warning statement, see 5.2.1.
2. Referenced Documents
2
2.1 ASTM Standards:
D 2674Test Method for Methods of Analysis of Sulfochromate Etch Solution Used in Surface Preparation of Aluminum
D 3167 Test Method for Floating Roller Peel Resistance of Adhesives
E 865 Specification for Structural Film Adhesives for Honeycomb Sandwich Panels
E 866 Specification for Corrosion-Inhibiting Adhesive Primer for Aluminum Alloys to Be Adhesively Bonded in Honeycomb
Shelter Panels
2.2 APHA Standard:
3
Sections 402, 403, and 408 of Standard Methods for the Examination of Water and Waste Water (15th Edition, 1980)
APHA Standard Methods for the Examination of Water and Waste Water (15th Edition, 1980), Sections 402, 403, and 408
3. Significance and Use
3.1 Durable adhesive bonds to aluminum alloys can be obtained reliably only through proper selection and careful control of
the materials used and the steps in the bonding process. The preparation of the aluminum alloys to obtain clean, uniform surfaces
with appropriate characteristics is a critical step. This practice describes how such surfaces can be obtained.
4. Apparatus
4.1 General Processing:
4.1.1 All heated tanks shall be equipped with automatic temperature controls and shall have means for agitation to prevent local
overheating of the solution. Solutions may be heated by any internal or external means that do not change their compositions.
Steam shall not be introduced into any solution. Compressed air introduced into any solution or equipment shall have been filtered
to remove oil and moisture.
4.1.2 Tanks shall be made from, or lined with, materials that have no adverse effects on the solutions used or the parts being
treated. All tanks shall be of sufficient size to allow complete immersion of the largest part or assembly to be treated.
4.2 RinseTanks—Immersionrinsetanksshallbeequippedwithameansforskimmingoroverflowingorbothtoremovesurface
contamination. The tanks shall be equipped with a means for flushing hollow sections.
4.3 Rinses—Rinses, other than final rinses, shall be maintained in such a manner to prevent carryover of materials that would
adversely affect the next solution. —Rinses, other than final rinses, shall be maintained in such a manner to prevent carryover of
1
This practice is under the jurisdiction ofASTM Committee E06 on Performance of Buildings and is the direct responsibility of Subcommittee E06.53 on Materials and
Processes for Durable Rigidwall Relocatable Structures.
´1
Current edition approved Oct. 1, 2003. Published October 2003. Originally approved in 1982. Last previous edition approved in 1998 as E864–98 .
Current edition approved Nov. 1, 2008. Published December 2008. Originally approved in 1982. Last previous edition approved in 2003 as E 864 – 03.
2
Available from the American Public Health Assn., 1015 15th St. N.W., Washington, DC 20005.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from the American Public Health Association (APHA), 800 I Street, NW, Washington, DC 20001-3710, http://www.apha.org.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959, United States.
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