2014年2月17日星期一

universal testing machine selection should hydraulic hose

1, the choice of models: first determine the required test material vigorously tested the most value. parher hydraulic blocks Maximum force in 2KN below, generally used in single column electronic tensile testing machine can be; For 2KN to 50KN force value in the interval, we generally use two-column desktop electronic universal testing machine; at 50KN or more, should be used and ground electronic universal testing machine up.
2, universal testing machine test speed and height options: Depending on the product's performance to be measured, roughly determine the testing machine test speed, (best buy can set the speed test models). Experimental tests needed to understand space test requirements beam displacement and vertical test space (generally, beam displacement 898mm, vertical test space 1067mm). If the elastomer test beam displacement and vertical test space will require a little higher. Specific circumstances need to follow the experimental requirements to be.
3, the load sensor selection: According to the requirements of the experiment he has done select the appropriate 60 Cone seal hose fitting sensors, sensor selection principle is doing experiments is not less than the minimum force sensor maximum range of 10%, otherwise you will need to select a different range sensors.
Note: Generally, the sensor maximum range of 10% or less accuracy is unstable, the measured data is not accurate.
4, the choice of compliance testing machine: Any mechanical system are deformed by the force, no matter how slight deformation, the deformation is called flexibility. The test results and can lead to serious errors. Particularly in small stroke required in the high load test. Therefore, when selecting the test machine should be selected beams, load cell and fixtures relatively high stiffness testing machine to ensure that the results are correct.
5, the fixture of choice: the choice of fixtures should follow: The specimen will not slip and will not cause breakage clip, and ensure that the force of the axial symmetry principle. In some 74 jic female fitting cases, the clamping requires very special, would require special fixtures or tooling designed to meet specific test criteria.

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