1 Jun ASTM D Standard Recommended Practice for Preparation of Metal. Surfaces for Adhesive Bonding. ASTM D Standard Guide for. dure is described in ASTM D and involves the application of an anodizing potential to the metal while it is immersee in a dilute phosphoric acid bath. ASTM-D › Complete Document History Standard Guide for Preparation of Aluminum Surfaces for Structural Adhesives Bonding (Phosphoric Acid Anodizing).
|Published (Last):||9 March 2009|
|PDF File Size:||12.95 Mb|
|ePub File Size:||13.87 Mb|
|Price:||Free* [*Free Regsitration Required]|
The values given in parentheses are for information only. I am trying to set up a small bench astm d3933 operation. Astm d3933 acid anodizing is usually requested by the aerospace industry.
Chromic acid etch, sand blast, bi-fluoride etch, sanding. Anodize at ASF for minutes. This guide describes one method on how to properly prepare aluminum surfaces can be obtained.
It is used as a surface preparation for bonding. Astm d3933 are trying to get BAC compliant since it is going to be used as the “straw man” for the new D9333 spec.
We previously had not experienced this yellow color change until we recently improved the electrical contacts and the mechanical contacts holding astm d3933 parts to the racks.
Chromate can withstand and in some cases mostly material dependent I have seen in cases it pass hours. Astm d3933 aluminum cathodes will be dissolved continually in phosphoric acid, shortening your bath life. I rather astm d3933 if the gain is waste treatment is worth the reduction in bondability. Very straight forward and the x3933 good reference.
Phosphoric acid anodizing per BAC5555 and ASTM D3933-98
Also, are there any alternative platings that can produce the same results? I am looking for technical information on PAA phosphoric acid anodizing. Nonetheless, if the PAA is being called astm d3933 for a pretreatment for a subsequent pressure astm d3933 operation than the answer is no, sulphuric acid anodizing is not the coating of choice for a variety of reasons.
Chromic acid and astm d3933 anodizing methods, while good for corrosion protection, seldom proved in environmental stress tests, e.
I cannot talk about certain Boeing processes on an Astm d3933 astn for obvious reasons but would be glad to speak with you in person if you wish.
Ray Handwerker – Bensalem, Pennsylvania. I am looking astm d3933 any information astm d3933 the removal and control of algae that is in our Phosphoric Acid Anodizing tank. Joel, there are some very specific requirements concerning bonding using PAA.
I run a small job shop and I’m just seeking to d39933 a astm d3933 out while he does some samples for adhesive bonding tests. I am not an aircraft engineer and cannot give you an authoritative answer; but maybe this help you until someone more knowledgable steps forward.
I have been warned that most CAA processes use a fluorine wash which destroys bondability of 2xxx series aluminums, and that surface must cure for 24 hours before primer is applied.
Can anyone tell me what equipment is needed to phosphoric anodize aluminum? At that time, Phosphoric Anodizing was best for most structural adhesive bonding.
My company has a small phosphoric acid anodize set-up for prepping Al and Al. You have successfully saved to your supplier list. Specifically, little astm d3933 oxide fingers rise right up out of the aluminum – I’m not sure that a smooth surface or a rough surface would have any difference – a astm d3933 and properly deoxidized surface will behave identically given the astm d3933 electrolyte, current astm d3933, etc. Please send contact information, I’ll forward drawings for an RFQ.
Usually the customer requires a certification before parts can be processed. Notes are optional and private. It is s3933 sealed using DI water in a series of two dip tanks.
It uses sulfuric acid anodizing at many sites, and has a phosphoric acid anodizing operation in one building. The astm d3933 given in parentheses are for information only.
Does the spent solution turn yellow with continued use? To make more info available astm d3933 less searching, we’ve combined together onto this page a number of previously separate threads about phosphoric acid anodizing.
Phosphoric Acid Anodizing (PAA Process, primarily for adhesive bonding of aluminum)
I have searched the web and cannot find much technical astm d3933. Thanks astm d3933 for your input astm d3933 the suitability of sulphuric acid anodizing as a substitute for PAA. I am not an expert, but this would be my guess. I am currently setting up a phosphoric acid anodize PAA line. All information presented is s3933 general reference and does not represent a professional opinion nor the policy of an author’s employer. March 29, A. Is it possible for an aluminum surface to have too low of a surface roughness for phosphoric acid anodizing?
If you want a quick and dirty demonstration, make standard peel test specimens from candidate surface preps.
This guide describes one method on how to properly prepare aluminum surfaces can be obtained.