ASTM D3933 PDF
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.
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This standard is useful in determining suitability of an adhesive in applications where the odor level associated with end use is critical, such as vehicle interiors. As the voice of the U.
The colors most frequently seen are purple, yellow, blue, and green hues. There are very stringent requirements for application and inspection of phosphoric acid anodized parts [for aerospace application]. The preparation of the metallic substrates to obtain surfaces with appropriate characteristics is a critical step.
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.
Phosphoric Acid Anodizing (PAA Process, primarily for adhesive bonding of aluminum)
Your Alert Profile lists the documents that will be monitored. James Watts – Navarre, Florida 2 of 2 simultaneous responses A. The Mil spec was written to get dd3933 to use stressed, environmental testing for adhesive bonding quality control instead r3933 relying only on plain lap shear tests and to use good overall practices. This guide describes one method on how to properly prepare aluminum surfaces can be obtained.
Please first verify your email before subscribing to alerts. If Boeing’s BAC spec is still active, then it would be prudent to consider it’s use. You MAY be surprised by the result. My main question is what is the recommended cathode material for this chemistry? A specific precaution is given in 5.
Take a look at this sites “must have” book list. Sorry for the non-definitive answer.
Precision shall be reported in terms of the standard deviation of the data and the standard error of the mean. Ray Handwerker – Bensalem, Pennsylvania.
For alloys with a lot of Chrome, the solution will become a greenish color. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Do you know where I can get the info? It is not clear to me if Phosphoric Acid Anodizing is still patented or not.
My understanding is that some of Boeing’s competition does not use this process for adhesive bonding, but rather a variant of chromic acid anodizing.
Standard Guides for Automotive and Aerospace Adhesives from ASTM
There is even a standard related to adhesive odor: I am trying out Phosphoric Acid anodizing for a new customer. Basically any of these processes would have to be tested for relative bond strength. Now maybe there are some issues that are addressed inside of NASA that I am not aware of obviously, but I don’t see the reasoning behind phosphate coating over chromate.
Can anyone tell xstm what equipment is needed to phosphoric anodize aluminum? It even provides a means for specifying these materials through the ASTM standards that it references. My company is co-molding forged aluminum inserts into a carbon fibre component for the auto racing industry. Aetm is an engineering document you dd3933 to be qualified to for Boeing work.
I am skeptical-any truth to this? If you see an affordable copy anywhere these days, grab it: It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 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.
Reviewing this guide brings perspective not only to the product under development, but also any necessary testing. We have no amendments or corrections for this standard. The use of this guide also provides information necessary for the development of standard specifications for adhesives. The values given in parentheses are for e3933 only.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. It is then sealed using DI water in a series of two dip tanks. It is not clear to me if Phosphoric Acid Anodizing is still patented or asttm.