ASTM D Standard Recommended Practice for Preparation of Metal. Surfaces for Adhesive Bonding. ASTM D Standard Guide for. D – Designation: D – 98 AMERICAN SOCIETY FOR TESTING PA Reprinted from the Annual Book of ASTM Standards. D, Method r, and ASTM E involves the etching of aluminum dure is described in ASTM D and involves the application of.
|Published (Last):||2 April 2018|
|PDF File Size:||16.22 Mb|
|ePub File Size:||13.22 Mb|
|Price:||Free* [*Free Regsitration Required]|
As for my colleague, he studied the standards with the tenacity of an electrical engineer. Please first verify your email before subscribing to alerts.
Last previous edition D— If the potential cannot be reestablished within 2 min, then rinse and reprocess starting with the deoxidizer. This discussion is limited to single-lap specimens and shear strength only for simplification. Historical Version s – view previous versions of standard.
If you want a quick and dirty demonstration, make standard peel test specimens from candidate surface preps. The Mil spec was written to get people to use stressed, environmental testing for adhesive bonding quality control instead of relying only on plain lap shear tests and to use good overall practices.
If Boeing’s BAC spec is still active, then it would be prudent to consider it’s use. There is an engineering document you need to be qualified to for Boeing work.
The use of a Ultra Violet system has been mentioned as one possible cure? Is there any literature about the advantages and problems associated with switching from phosphoric acid to sulfuric acid anodizing? One option was to eliminate the entire process and propose Ion Beam Assisted Deposition treatment to the components.
Proceed to Checkout Continue Shopping. When we wrote it some years ago, it contained just about everything we wanted for aerospace structural adhesive bonding.
Standard Guides for Automotive and Aerospace Adhesives from ASTM
You may be looking for Boeing’s BAC process. Periodically check, clean, or replace? Phosphoric acid anodizing PAA is used to give aluminum a good tooth for adhesive bonding. As the voice of the U.
Phosphoric acid anodizing per BAC5555 and ASTM D3933-98
Ted is right that some adhesive bonding is performed using CAA as an alternative to PAA, but my understanding is the lap shear test comparisons do not show the same results over time.
See D [link by ed. Reviewing this guide brings perspective not only to the product under development, but also any necessary testing. The first is used by Boeing for adhesive bonding.
If you want a quick and dirty demonstration, make standard peel test specimens from candidate surface preps. Please first log in with a verified email before subscribing to alerts. You can download and open this file to your own computer but DRM d393 opening this file on 3d933 computer, including a networked server.
Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. You may delete a document from your Alert Profile at any time. You may delete aastm document from your Alert Profile at any time. This standard is also available to be included in Standards Subscriptions. Our PAA asgm is getting hardware no roughness specified where the surface has a mirror like finish, probably a RMS.
Recently one of my long-time colleagues with an electrical engineering background retired. I have searched the web and cannot find much technical info. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Phosphoric acid anodizing is usually requested by the aerospace industry. Phosphoric acid anodizing is porous and provides a substrate for mechanical locking, so I suppose that is why you need it for the adhesion test.
Can anyone tell me what equipment is needed to phosphoric anodize aluminum? They state that at this low roughness the plating has problems adhering. Is this the fungus that I have read about or something else? Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.
Stiltner, the answers to your questions are partially in the asmt volume set by Wernick, Ast, and Sheasby, The Surface Treatment of Aluminum and its Alloysand a number of books on pretreatments of aluminum for bonding purposes. The next best process to PAA would be any method of etching the aluminum surface to roughen the profile.
Prior to engineering your line you may wish to also think about production flow logistics as Ray mentioned which are critical for best results, as well as meeting most aerospace specs.
Broussard plating and metal finishing shop – Albuqerque, New Mexico A. I have searched the web and cannot find much technical info. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. Others tell me that PAA requires primer application within 3 hours of anodizing and near clean room surroundings to avoid subsequent damage. We appended your question to a thread which should answer many of your questions without having to wait for replies.
The Mil spec was written to get people aztm use stressed, environmental testing 3d933 adhesive bonding quality control instead of relying only on plain lap shear tests and to use good overall practices. This guide describes one method on how to properly prepare aluminum d3933 can be obtained.
You may find something on the web under PAA or BAC, or you can do a literature search which will give you some data, or consider contacting Boeing’s commercial development office about licensing BAC Of course, that was only the beginning: Is it possible for an aluminum surface to have too low of a surface roughness for phosphoric acid anodizing?
Standards Subscriptions from ANSI provides a money-saving, multi-user solution asfm accessing standards. This standard is not included in any packages. I am trying out Phosphoric Acid ast for a new customer.