*Please Note: The information outlined above is to be used as reference for ASTM D Standard Test Methods for Rubber Property – Adhesion to Rigid. ASTM D determines the adhesion strength of rubber to rigid materials, such as metals. The standard requires that the testing machine conform to practices. 9 Sep This standard is issued under the fixed designation D ; the 1 These test methods are under the jurisdiction of ASTM Committee D11 on.
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It opens to expose both horizontal specimen surfaces, greatly easing specimen removal. Specimen damage may go unnoticed, adversely affecting the repeatability and ashm of test determinations.
Have a question about conducting the test for this standard? Apply a steady tension load until the rubber either separates from the metal surface or ruptures. Record the total load at the time of failure.
ASTM D429 – 14
Record the total force at the time of failure. Manual vice grips may also work but must be tightened very tight. Once the samples have cooled, clamp the bonded assembly to the tension testing machine using tensile grips. Email addresses can only contain letters, numbers and the following special characters: Method G of ASTM D asfm the bond strength of rubber to metal components with a double shear cylindrical specimen.
We also recommend serrated jaws on your grips to avoid sample slipping. Please Request a Quotation for current pricing and delivery. The metal pieces are made with tabs on the asttm for gripping in the test machine. XyLive is the best choice to enable the test engineer to visually monitor the progress of the test vs the data on the computer screen. The xstm are placed into the shear test fixture and the shear stress is placed on the bond line. CCSi UltraLife molds feature a unique cam-action hinge design which improves the critical distribution of pressure.
It may apply to vibratory or vibration applications, satm this test is not dynamic. This test is almost identical astj Method B, except it applies exclusively to the rubber lining of a tank wall.
The platens are positively positioned with precision guide pins and receivers The durable, hard chrome finish resists the corrosive and adhesive effects of most compounds, greatly improving overall durability and ease of maintenance.
Forces up to 10 kN 2, lbf Low force tabletop systems Modular series of five frame options with adjustable test space Affordable testing option for tension, compression, bend, peel and much more. Method B describes a peel procedure to determine the adhesive strength between rubber materials to a metal plate or substrate.
Results are obtained by measuring the pull load necessary to separate a rubber strip from a metal surface at a 90 degree angle. They can be equipped with a selection of interchangeable grip jaw faces in various sizes and choice of surfaces including smooth ground, rubber-coated and serrated. Before the load is applied, strip the rubber from the metal plate by using a sharp knife.
Thicker specimens, which are prepared in dual platen laboratory molds, are often subject to damage caused by the difficulty of extraction. CCSi UltraLife molds are designed, engineered, and manufactured to produce high quality specimens, over an extended service life! The results are obtained by measuring the force necessary to separate a rubber from a metal surface.
Method A describes a tension test used to determine the bond of a rubber part assembled between two d4429 metal plates. Maintaining unidirectional force throughout the process of peeling from a substrate. Contact Us Request an Accessory Catalog. A shear test is done until a break occurs at a depth of 5 mm at the rubber-metal bond interface.
ASTM D429 Rubber to Metal Adhesion Test Equipment
To begin testing, place the test specimen in the jaws attached to the fixed grip with the separating edge toward the operator. Vulcanizing is consists of a chemical reaction with sulfur and heating which improves the mechanical properties of rubber.
Rubber is typically bonded to metal during the vulcanizing or heating process, but this method is for glue or other materials that are used after the rubber is made via vulcanizing. The assembly is cured in a degree Celcius oven for one hour.
Test Method A helps determine the asgm adhesion strength of rubber to metal. The adhesion values are obtained by measuring the force in an axial direction that is necessary to separate the bonded rubber from the metal component. As force is applied in one direction the material shrinks in the orthogonal direction.
ASTM D – 14 Standard Test Methods for Rubber Property—Adhesion to Rigid Substrates
The CCSi UltraLife mold platens are c429 than standard molds, providing superior heat and pressure distribution, as well as extending the mold’s useful life by resisting distortion.
The test machine should be equipped with swivel joints above and below to ensure uniformly distributed tensile force tensile force through the specimen assembly.
In the Figure 7 diagram, the specimen is shown in a horizontal position, when in reality, the specimen would be placed vertically in the test machine. Works very well with flat, thin specimens Eccentric design increases gripping force with tension.
Adjustable data acquisition rates allow the user to ensure they are capturing all the desired peaks and troughs throughout the entire test. To prepare the specimens for Ast, D, 6 rubber pucks are mounted in an assembly with a clamp to hold compressive force. Next, mount the test specimens in the threaded grips of the tensile test machine.
Users of previous versions of software such as Bluehill 2 and Bluehill 3 can easily upgrade to the newest version of Bluehill. Pneumatic grips are active in that they maintain the same gripping force even as the specimen necks down.
Then subject the test pieces to the chosen environmental conditions. This also allows the overflow recesses to be deeper, reducing problems associated overfill. Place the tab in the grip and apply a steady load at the rate of 50 mm 2. Loads as high at 10, pounds can be common. Data from this test will be a typical tensile force plot force vs displacement.
Line dd429 and special coated faces are also available. Load ratings from 1 kN to 10 kN lbf to 2, lbf Maximum specimen thicknesses of 7 mm or 8 mm 0. The upper and lower parts of the specimen are metal cones with slots or threads for connecting to d249 tensile test machine. Although our engineers can provide guidance, we recommend you purchase the official ASTM D International Standard to achieve the best results.