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ASTM D7055-04

(Practice)

Standard Practice for Preparation (by Abrasive Blast Cleaning) of Hot-Rolled Carbon Steel Panels for Testing of Coatings

Standard Practice for Preparation (by Abrasive Blast Cleaning) of Hot-Rolled Carbon Steel Panels for Testing of Coatings

SCOPE
1.1 This practice covers the procedures to be followed in the preparation (by abrasive blast cleaning) of hot rolled steel panels for laboratory testing of coatings.
1.2 This standard practice does not include procedures for the application of coatings.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 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.

General Information

Status
Historical
Publication Date
31-May-2004
ICS
77.140.50 - Flat steel products and semi-products
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.46 - Industrial Protective Coatings
Current Stage
Ref Project

Relations

Replaced By
ASTM D7055-09 - Standard Practice for Preparation (by Abrasive Blast Cleaning) of Hot-Rolled Carbon Steel Panels for Testing of Coatings
Effective Date
01-Dec-2009
Referred By
ASTM D6577-15(2019) - Standard Guide for Testing Industrial Protective Coatings
Effective Date
01-Jun-2004
Referred By
ASTM D6943-15(2019) - Standard Practice for Immersion Testing of Industrial Protective Coatings and Linings
Effective Date
01-Jun-2004

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ASTM D7055-04 - Standard Practice for Preparation (by Abrasive Blast Cleaning) of Hot-Rolled Carbon Steel Panels for Testing of CoatingsASTM D7055-04 - Standard Practice for Preparation (by Abrasive Blast Cleaning) of Hot-Rolled Carbon Steel Panels for Testing of Coatings
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ASTM D7055-04 - Standard Practice for Preparation (by Abrasive Blast Cleaning) of Hot-Rolled Carbon Steel Panels for Testing of Coatings
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation:D7055–04
Standard Practice for
Preparation (by Abrasive Blast Cleaning) of Hot-Rolled
Carbon Steel Panels for Testing of Coatings
This standard is issued under the fixed designation D7055; 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.
1. Scope AB-1 Mineral and Slag Abrasives
AB-2 Specification for Cleanliness of Recycled Ferrous
1.1 Thispracticecoverstheprocedurestobefollowedinthe
Metallic Abrasives
preparation (by abrasive blast cleaning) of hot rolled steel
AB-3 Newly Manufactured or Re-Manufactured Steel
panels for laboratory testing of coatings.
Abrasives
1.2 This standard practice does not include procedures for
SP1 Solvent Cleaning
the application of coatings.
SP5/NACE No. 1 White Metal Blast Cleaning
1.3 The values stated in SI units are to be regarded as the
SP10/NACE No. 2 Near-White Metal Blast Cleaning
standard. The values given in parentheses are for information
SSPC-VIS 1 Guide and Reference Photographs for Steel
only.
Surfaces Prepared by Dry Abrasive Blast Cleaning
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Summary of Practice
responsibility of the user of this standard to establish appro-
3.1 This practice enables the user to specify the level of
priate safety and health practices and determine the applica-
preparation of hot-rolled carbon steel test panels (prepared by
bility of regulatory limitations prior to use.
dry abrasive blast cleaning) for testing of coatings, including
2. Referenced Documents thesteelcomposition,thedegreeofsurfacecleanliness,andthe
type of abrasive.
2.1 ASTM Standards:
A36/A36M Specification for Carbon Structural Steel
4. Significance and Use
A572/A572M Specification for High-Strength Low-Alloy
4.1 Theproceduresdescribedinthispracticearedesignedto
Columbium-Vanadium Structural Steel
provide hot-rolled, carbon steel panels with uniform and
D4285 Test Method for Indicating Oil or Water in Com-
reproducible abrasive blast cleaned surfaces for testing of
pressed Air
coatings.
D4417 Test Methods for Field Measurement of Surface
Profile of Blast Cleaned Steel
5. Test Panels
2.2 ISO Standard:
5.1 Prepare the test panels from unpainted hot-rolled steel
ISO 8502-3, Part 3 Assessment of Dust on Steel Surfaces
3 plate or bar stock as described in 5.2 and 5.3. The panels shall
Prepared for Painting (pressure-sensitive tape method)
be made to a size and thickness as agreed upon between the
2.3 SSPC/NACE Standards:
purchaser and seller.
5.2 The steel composition shall be either Specifications
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
A36/A36M, A572/A572M, or as agreed upon between the
Related Coatings, Materials, and Applications and is the direct responsibility of
purchaser and seller.
Subcommittee D01.46 on Industrial Protective Coatings.
5.3 The surface condition of the steel prior to surface
Current edition approved June 1, 2004. Published July 2004. DOI: 10.1520/
D7055-04. preparation shall be specified and shall be one of two rust
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
grades based on SSPC-VIS 1: Grade A, intact mill scale; or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Grade B, rusting mill scale.
Standards volume information, refer to the standard’s Document Summary page on
5.4 Saw-cut or sheared edges of the test panels shall have
the ASTM website.
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the burr removed. Sharp corners shall be broken using a
4th Floor, New York, NY 10036.
grinding wheel.
Available from SSPC: The Society for Protective Coatings 40 24th Street, 6th
Floor, Pittsburgh PA 15222-4656.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D7055–04
6. Methods of Preparation 6.4.1 Steel Grit (angular).
6.4.2 Coal Slag (angular).
6.1 Degreasing—Prior to abrasive blast cleaning, the sur-
6.4.3 Garnet (angular).
face shall be degreased using one of the methods listed below
6.4.4 Silica Sand (angular).
from SSPC-SP1.
6.4.5 Aluminum Oxide (angular).
6.1.1 Solvent Cleaning—Immerse the panel in a cleaning
6.4.6 Steel Shot (rounded).
solution or rub the surface with a clean lint-free cloth wetted
6.4.7 Blendofapproximately60 %steelshotand40 %steel
with an appropriate solvent. If excessive oil or grease is
grit.
present, power brush the surface vigorously and re-rinse or
6.4.8 DefaultAbrasiveType:Ifnoabrasivetypeisspecified,
wipe.
the abrasive used shall be steel grit.
6.1.2 Alkaline or Detergent Cleaning—Aqueous alkaline
6.5 Abrasive Blast Cleaning Operation—The operator shall
cleaners are available from a number of sources as proprietary
blast clean the panels using an interior-located blast cabinet or
compounds or processes. Clean the panels with an alkaline
a blast room. The blast nozzle air pressure shall be maintained
solution or cleaner applied by spray or immersion. Brush or
at 90 to 100 psi, as measured using a hypodermic needle
wipe in accordance with the recommendations of the cleaner
pressure gage. The blast system shall be equipped with
manufacturer. One or more steps of rinsing with water will be
compressed air moisture and oil extractors. Air dryers or
required after this cleaning procedure. To prevent rust forma-
coolers can be used in lieu of moisture traps. The compressed
tion, force dry the panel surfaces immediately after rinsing.
air used to pressurize the system and to propel the abrasive
6.2 Selecting the Degree of Abrasive Blast Cleaning—The
through the blast hose and nozzle shall be verified for clean-
user shall specify one of the following degrees of cleaning as
liness before each use in accordance with Test Method D4285.
defined below.
The blast nozzle angle (to the panel surface) shall be main-
6.2.1 SSPC-SP5/NACE No. 1, “White Metal Blast”—A
tained at approximately 75 to 80°, and the blast nozzle shall be
white metal blast cleaned surface, when viewed without
positioned 6 to 12 in. from the panel surface. Abrasive blast
magnification, shall be free of all visible oil, grease, dust, dirt,
cleaning shall be performed using an overlapping abrasive
mill scale, rust, coating, oxides, corro
...

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