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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. Find Similar Items This product falls into the following categories.
ASTM D2651 – 01(2016)
NOTE 4—Caution should be exercised during vapor degreasing of magnesium alloys. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This asrm covers procedures for preparing various wrought metal surfaces for adhesive bonding.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. If continuous failures astj, the treating process itself should be analyzed to determine the cause of the problem. Finishing voltages sstm 15 to 25 V are used.
On the basis of the results of such an investigation, it may be possible to extend the length of time and establish standards for the interval between surface preparation and adhesive application to? The methods may be revised or supplemented, as necessary, to include methods based on proven performance.
Peening action of any blast process may work-harden the surface of some base astn.
ICS Number Code Somewhat lower bond strength results from this method compared to other methods described. Previously bonded parts, such as honeycomb core materials, are usually not degreased due to difficulty in removing residue. This can be accomplished by wiping with a cloth wetted with a variety of commercial solvents, such as acetone, methyl ethyl ketone, d265 thinner and naphtha. Contaminants, such as metal particles, oils, etc.
Distilled water should be used in the test, and a drainage time of about 30 s should be allowed. Thin sheet steel may be warped due to peening of the blasting abrasives.
Please download Chrome or Firefox or view our browser tips. Generally, not more than two repeat treatments are permitted. A number in parentheses indicates the year of last reapproval. This test depends on the observation that a clean surface one that is chemically active or polar will hold a continuous? This abstract is a brief summary of the referenced standard. Several commercial products are available. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Same mechanical methods as that employed in stainless steel and chemical etching by nitric-phosphoric acid solution may be used for carbon steel preparation. The major problem is in preventing oxidation of the surfaces. 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.
It does not address the preparation of cast metals. Surface preparation for magnesium alloys which is closely associated with corrosion prevention shall involve vapor, alkaline-detergent solution, chromic acid, and sodium hydroxide acid degreasing; anodic treatment; and the use of conversion coatings and wash primers.
Do not allow to dry. NOTE 9—If treating solution is to be used for a continuous operation or reused, it should be discarded after 4 to 6 h at the temperatures in In production bonding of complicated or large parts, the time interval may exceed 8 h.
Originally published as D — Adhesive bonds surface preparationCarbon steel, Copper, Copper alloy, Magnesium alloys, Metallic adhesives, Metal-to-metal contact, Stainless steel, Titanium alloys, Aluminum alloys-surface preparation for adhesive, bonding, Bond strength-adhesives metal-to-metalSurface preparation-adhesive bonding.
This is especially true for stainless steel. The major problem is to apply sufficient thickness of coating to prevent corrosion, but not so thick that the bond fails within the coating. Take the smart route to manage medical device compliance. The values given in parentheses are for information only. Apply the adhesive immediately after the treatment. Bond strengths obtained using either of these surface preparations are somewhat lower than those from the immersion processes.
Surface preparation for magnesium alloys which is closely associated with corrosion prevention shall involve vapor, alkaline-detergent solution, chromic acid, and sodium hydroxide acid degreasing; anodic treatment; and the use of conversion coatings and wash primers. Learn more about the cookies we use and how to change your settings.
ASTM D – 01() Standard Guide for Preparation of Metal Surfaces for Adhesive Bonding
It does not address the preparation of cast metals. Hand sanding, rubbing with metal wool, and wire brushing are the least effective methods.
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.
NOTE 1—No entirely foolproof method exists to determine bondability of a metal surface after preparation. Good bond strengths have resulted by bonding titanium alloys that have been anodized by proprietary processes. Link to Active This link will always route to the current Active version of the standard.
atm Last previous edition D — 90 The high reactivity of magnesium requires that corrosion-preventative coatings be applied for most service applications. The values given in parentheses are for information only. The methods may be revised or supplemented, as necessary, to include methods based on proven performance.
Abrasive and debris should be wiped or water rinsed from the surface. Rinsing may be done by spray or by dipping in a tank satm which the water is circulated and constantly being renewed by an over?