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ASTM International takes no position respecting the validity of any patent rights asserted sstm connection wstm any item mentioned in this standard. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applica- 1 This guide is under the jurisdiction of ASTM Committee D14 on Adhesives and is the direct responsibility of Subcommittee D Same mechanical methods as that employed in stainless steel and chemical etching by nitric-phosphoric acid solution may be used for carbon steel preparation.
This is especially true for stainless steel.
ASTM International – Standard References for ASTM D – 01()
Satisfactory surface preparations have been accomplished by using paste-type etchants. Exercise extreme care to ensure removal of all traces of the etchant.
Last previous edition D — 90 The number of times a process may be repeated depends upon the amount of metal removed in relation to the x2651 requirements for the part and whether clad or bare metal is used. Same mechanical methods as that employed in stainless steel and chemical etching by nitric-phosphoric acid solution may be used for carbon steel preparation.
Sand blast, grit blast, or vapor hone may be used. It does not address the preparation of cast metals. DuPont, Wilmington, DE Commercially available proprietary solutions may be used. Thorough rinsing should follow.
Find Similar Items This product falls into the following categories. This standard has been approved for use by agencies of the Department of Defense. This guide covers procedures for preparing various wrought metal surfaces for adhesive bonding. Your comments will receive careful consideration d26511 a meeting of the responsible technical committee, which you may attend.
ASTM D2651 – 01(2016)
Refer to the appropriate literature for details on cleaning techniques and procedures. Commercial vapor degreasing equipment is usually used. Distilled water should be used in the test, and a drainage time of about 30 s should be allowed. Any trace of residual cleaning solution should be removed or a false conclusion may be made.
Surface treatment methods involving both mechanical and chemical techniques are included for aluminum alloys, stainless steel, carbon steel, titanium alloys, magnesium alloys, and copper and copper alloys.
Do not allow the time interval between treatment and bonding to exceed 72 h, and cover or wrap all parts during the interval with a non-contaminating vapor barrier material. A break in the water?
Generally, not more than two repeat treatments are permitted.
Usually, the time should not exceed 8 h and parts should be covered or wrapped in Kraft paper. The adhesive or adhesive primer must be applied immediately astj drying. Procedure NOTE 3—The surface preparation methods for magnesium alloys are closely associated with corrosion prevention.
Vapor blasting by water or steam and an abrasive is the most effective method and does not warp parts, if done carefully. If continuous failures occur, the treating process itself should be analyzed to determine the cause of the problem.
You may experience issues viewing this site in Internet Explorer 9, 10 or Longer dwell times should be avoided. The application of these paste systems allows for their use in fairly controlled areas. Trial bonding followed by testing and evaluation against mechanical strength standards should be conducted to determine initial and continuous effectiveness of a method.
Finishing voltages from 15 to 25 V are used. Nitric acid-ferric chloride solution degreasing; sulfuric acid-dichromate-ferric sulfate solution etching; and chemical treatment by nitric-acid-sodium chlorite solutions may be used for copper and copper alloy preparation.
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