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ASTM D – 01 Standard Guide for Preparation of Metal Surfaces for Adhesive Bonding
The surface should be recleaned until the test is passed. 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. Contaminating operations in the area should be avoided. Somewhat lower bond strength results from this method compared to other methods described.
The adhesive or adhesive primer must be applied immediately after drying. The use of a Series stainless steel for such equipment is suggested. Any trace of residual cleaning solution should be removed or a false conclusion may be made.
The high reactivity of magnesium requires that corrosion-preventative coatings be applied for most service applications. Your basket is empty. 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.
Generally, not more than two repeat treatments are permitted. Exercise care in using any mechanical method to prevent deep gouges or rough surfaces which are not conducive to good bonding.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. The methods may be revised or supplemented, as necessary, to include methods ashm on proven performance.
Good bond strengths have resulted by bonding titanium alloys that have been anodized by proprietary processes. Your comments are invited either for revision of this standard or for additional standards and d265 be addressed to ASTM International Headquarters. Generally in production, a series of tanks containing the necessary solutions is arranged with overhead cranes to transport parts to be prepared.
Historical Version s – view previous versions of standard. This is especially true for stainless steel. Sand blast, grit blast, or vapor hone may be used.
This test depends on the observation that a clean surface one that is chemically active or polar will hold a continuous? The wide variety of individual alloys and heat treatments under each group, the fact that certain adhesives exhibit speci? It does not address the preparation of cast metals. Parts are suspended in the vapor zone above the hot liquid and allowed to remain until there is condensation and run off approximately 5 min.
It does not address the preparation of cast metals. Commercial vapor degreasing equipment is usually used.
ASTM D2651 – 01(2016)
Commercially available proprietary solutions may be used. Thorough rinsing should follow. Preliminary tests should be conducted to determine suitability of these processes before acceptance. Exercise extreme care to ensure removal of all traces of the etchant. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Procedure NOTE 3—The surface preparation methods for magnesium alloys are closely associated with corrosion prevention. The methods may be revised or supplemented, as necessary, d2615 include methods based on proven performance.
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 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.
The application of these paste systems allows for their use in fairly controlled areas. Several commercial products are available.