DIN EN CHARPY NOTCHED BAR IMPACT TEST ON METALLIC MATERIALS VERIFICATION OF PENDULUM IMPACT TESTING MACHINES. BS EN Charpy Impact Test on Metallic Materials Part 2: Method for the Verification of Impact Testing Machines. Corresponding national standard in UK Italy Belgium Sweden ISO DIN 51 NFA BS 8?.
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EN Impact Test_百度文库
Verification of pendulum impact testing machines. If more than 2 energy levels are verified, the additional levels shall be uniformly distributed in the range of application and as a function of the available reference test pieces. The plane of the anvils is perpendicular to the plane of the supports see Figure 1. The plane of the supports is perpendicular to the plane of the anvils see Figure 1 3.
Size px x x x x An amendment to BS will be published simultaneously with this standard. This European Standard takes into account the total energy absorbed by the fracture of the test piece. Your basket is empty. This standard is also applicable to reference pendulum impact testing machines, the geometrical characteristics of which are defined in Annex B.
Metallic materials — Impact test.
BS EN 10045-2:1993
The total absorbed energy consists of: Consequently, the documentation prepared when the machine is installed shall prove that the mass of the foundation is at least 40 times that of the pendulum which shall also be given in the documentation. Radius of curvature of the anvils: If this mechanism also includes a braking system, means shall be provided to prevent the brake being applied accidentally. The mechanism for releasing the enn from its initial position shall be capable of operating freely and releasing the pendulum without any initial jerk, delay or transverse vibration.
A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. NOTE For machines in which the hammer opening permits a play of at least 13 mm between the end of the test piece placed ready for the test and the safety stops, requirements a and d do not apply.
Find Similar Items This product falls into 10405-2 following categories. The width of the scale graduation marks shall be uniform and the width of the pointer shall be approximately equal to the width of one graduation mark. The reported absorbed energy under these conditions shall be designated by the symbols: 100045-2 website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.
The transfer device shall be designed and used in such a way that the temperature of the test piece is maintained within the temperature range permitted.
NOTE This may be done, for example, by placing a container of water on the machine framework and checking that there are no ripples on the surface of the water. NOTE This may be verified by means of a bar approximately 55 mm long and of rectangular cross-section: The notch shall be carefully prepared so that no grooves, parallel to the base of the notch, are visible to the naked eye. The anvils shall lie in one and the same plane; the distance between the two planes shall never exceed 0,1 mm.
NOTE l2 may be equal to l.
The test report shall state that the test piece was not broken by x J. Annex A describes, for information purposes, a direct method of verifying certain geometrical properties using a jig. The energy losses are due to: NOTE For machines manufactured after the publication of this standard, it is recommended that the mass of the pedestal of the machine should be at least 12 times the mass of the pendulum.
The values of the principal characteristics of the testing machine are specified in Table 3. The moment M of the pendulum is: