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ASTM International – Standard References for ASTM D – 01()
Full-scale property tests should be run with the metal xstm so prepared with the adhesive in question before accepting the process. Please download Chrome or Firefox or view our browser tips. Initial treatment is at about 5 to 10 V. The methods may be revised or supplemented, as necessary, to include methods based on proven performance. Prepared surfaces can change their characteristics on standing and adhesives vary widely in their tolerance of adherend surface conditions.
It does not address the preparation of cast metals.
You may find similar items within these categories by selecting from the asrm below:. Preliminary tests should be conducted to determine suitability of these processes before acceptance.
ASTM D2651 – 01(2016)
Satisfactory surface preparations have been accomplished by using paste-type etchants. Click to learn more. Good bond strengths have resulted by bonding titanium alloys that have been anodized by proprietary processes. Several commercial products are available. Somewhat lower bond strength results from this method compared to other methods described. Contaminating operations x2651 the area should be avoided.
The application of these paste systems allows for their use in fairly controlled areas. These paste systems can be made by adding fumed silica to the sulfuric-dichromic acid solutions. Last previous edition D — 90 Thin sheet steel may be warped asrm to peening of the blasting abrasives. The useful life of solutions depends upon the number and size of the parts being prepared.
ASTM D – 01 Standard Guide for Preparation of Metal Surfaces for Adhesive Bonding
Investigation should be atm to determine the time limitation of the adhesive and the rate of change on the surface of the adherend. Magnesium Alloys Copper and Copper Alloys. Apply the adhesive immediately after the treatment. It produces a smut-free surface that can be treated by other chemical processes. The surface is anodically etched again using a wrapped electrode and a deep-etching solution.
NOTE 1—No entirely foolproof method exists to determine bondability of a satm surface after preparation.
Preliminary tests should be conducted with the speci? Any trace of residual cleaning solution should be removed or a false conclusion may be made.
Some of these coatings exhibit good surfaces for adhesive bonding. This can be accomplished by wiping with a cloth wetted with a variety of commercial solvents, such as acetone, methyl ethyl ketone, lacquer asfm and naphtha.
Usually, the time should not exceed 8 h and parts should be covered or wrapped in Kraft paper.
Generally in production, a series of tanks containing the necessary solutions is arranged with overhead cranes to transport parts to be prepared.
Link to Active This link will always route to the current Aatm version of the standard. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. Longer dwell times should be avoided. Contaminants, such as metal particles, oils, etc. Originally published as D — Sand blast, grit blast, or vapor hone may be used.
Aluminum oxide-impregnated nylon matting, satm blasting and aluminum oxide cloth are typical acceptable abrasives. Procedure NOTE 3—The surface preparation methods for magnesium alloys are closely associated with corrosion prevention.