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Refer to the appropriate literature for details on cleaning techniques and procedures. Take the smart route to manage medical device compliance.
Satisfactory surface preparations have been accomplished by using paste-type etchants.
ICS D26551 Code It does not address the preparation of cast metals. Somewhat lower bond strength results from this method compared to other methods described.
Abrasive and debris should be wiped or water rinsed from the surface. The application of these paste systems allows for their use in fairly controlled areas. 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.
DuPont, Wilmington, DE It is not suitable for adhesives containing chlorides or for hot-bonding polyethylene. Other metals may be used if they are resistant to the solution used.
This test depends on the observation that a clean surface one that is chemically active or polar will hold a continuous?
The values given in parentheses are for information only. Originally published as D — Box T, Carson, CA Same mechanical methods as that employed in stainless steel and chemical etching by nitric-phosphoric acid solution may be used for carbon steel preparation.
This abstract is a brief summary of the referenced standard. This guide covers procedures for preparing various wrought metal surfaces for adhesive bonding.
ASTM D2651 – 01(2016)
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Terminal voltages and current decay schedules are typically speci? The methods may be revised or supplemented, as necessary, to include methods based on proven performance. Please download Chrome or Firefox or view our browser tips.
Especially detrimental are paint or other spraying operations, processes using powdered materials, oil vapors xstm pumps and other machinery and spraying of mold release agents. The adhesive or adhesive primer must be applied immediately after drying. A superscript epsilon e indicates d251 editorial change since the last revision or reapproval.
Do not allow the time interval between treatment and bonding to exceed 72 h, and cover or wrap all parts during the interval with a non-contaminating vapor barrier material.
Learn more about the cookies we use and how to change your settings. Commercially available proprietary solutions may be used. Surface treatment methods involving both mechanical and chemical techniques are included for aluminum alloys, aatm steel, carbon steel, titanium alloys, magnesium alloys, and copper and copper alloys.
Trial bonding followed by testing and evaluation against mechanical strength standards should be conducted to determine initial and continuous effectiveness of a method. Finishing voltages from 15 to 25 V are used. Thorough rinsing should follow. After removing from any rinse the water-break test is commonly used. Standards should aastm established and records kept for such tests on each lot or vat of solution.
Hand sanding, rubbing with metal wool, and wire brushing are the least effective methods. This d22651 be accomplished by wiping with a cloth wetted with a variety of commercial solvents, such as acetone, methyl ethyl ketone, lacquer thinner and naphtha. Contaminating operations in the area should be avoided.
Any trace of residual cleaning solution should be removed or a false conclusion may be made.