ASTM D2651 PDF

Buy ASTM D R GUIDE FOR PREPARATION OF METAL SURFACES FOR ADHESIVE BONDING from SAI Global. Purchase your copy of ASTM D – 01() as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards. Find the most up-to-date version of ASTM D at Engineering

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The methods may be revised or supplemented, as necessary, to include methods based on proven performance.

D 胶粘剂粘结用金属表面处理_百度文库

You may experience issues viewing this site in Internet Explorer 9, 10 or Prepared surfaces can change their characteristics on standing and adhesives vary widely in their tolerance of adherend surface conditions.

Previously bonded parts, asfm as honeycomb core materials, are usually not degreased due to difficulty in removing residue. Do not allow to dry. Do not seal the anodized parts with boiling water before bonding. Thorough rinsing should follow. Parts are suspended in the vapor zone above the hot liquid and allowed to remain until there is condensation and run off approximately 5 min.

Commercially available proprietary asym may be used. Magnesium Alloys Copper and Copper Alloys. If a water-break-free condition is not observed on the treated surface, it should not be used for bonding. Refer to the appropriate literature for details on cleaning techniques and procedures.

If continuous failures occur, the treating process itself should be analyzed to determine v2651 cause of the problem.

Other methods, such as indicator paper and contact angle, have been used d651 determine the effectiveness of the process. Some of these coatings exhibit good surfaces for adhesive bonding. Abrasive and debris should be wiped or water rinsed from the surface. Procedures for aluminum alloys are well standardized, possibly because more bonding has been done with these alloys. This method should be used only in cases where other methods cannot be used.

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Full-scale property tests should be run with the metal surfaces so prepared with the adhesive in question before accepting the process. Bond strengths s2651 using either of these surface preparations are somewhat lower than those from the immersion processes.

ASTM D – 01() – Standard Guide for Preparation of Metal Surfaces for Adhesive Bonding

Referenced Documents purchase separately The asrm listed below are referenced within the subject standard but are not provided as part of the standard. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Exercise care to ensure that all abrasive materials grit, sand, cloth, sand paper, or brushes are free from contamination that may be spread or rubbed onto the steel.

If you feel that your asfm have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.

Current edition approved Oct. NOTE 4—Caution should be exercised during vapor degreasing of magnesium alloys. Wash, vaporize degrease, and brush or air blasted dry oil-free air surfaces to remove all traces adtm the abrasives. Vapor blasting by water or steam and an abrasive is the most effective method and does not warp parts, if done carefully. Aluminum oxide-impregnated nylon matting, glass-bead blasting and aluminum oxide cloth are typical acceptable abrasives.

Dry grit or sand blasting tends to warp thin sheet materials; these methods are suited only for thick-section parts. Link to Active This link will always route to the current Active version of the standard. Thorough rinsing follows, usually in warm to hot running water. The surface will exhibit a grey or lighter color.

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Surface treatment methods involving both mechanical and chemical techniques are included for aluminum alloys, stainless steel, carbon steel, titanium alloys, magnesium alloys, and copper and copper alloys. NOTE 1—No entirely foolproof method exists to determine bondability of a metal surface after preparation.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. ICS Number Code X2651 use cookies to make our website easier to use and to better understand your needs.

ASTM D2651 – 01(2016)

The major problem is to apply sufficient thickness of coating to prevent corrosion, but not so thick that the bond fails within the coating. Somewhat lower bond strength results from this method compared to other methods described. The high reactivity of magnesium requires that corrosion-preventative coatings be applied for most service applications. Exercise extreme care to ensure removal of all traces of the etchant. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

Historical Version s – view previous versions of standard. The useful d651 of solutions depends upon the number and size of the parts being prepared. The surface should be recleaned until the test is passed.

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