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How to Improve Tensile Testing Machine Test Data Accuracy
TensionTesting Machine The accuracy of the data refers not only to the testing accuracy of the instrument itself, but also to the operation quality of the testing machine operator. When the testing accuracy of the instrument itself is stable, the testing machine operator must also pay attention to the following points to improve the accuracy of the tensile testing machine test data.
1. The attachment of the tensile stress testing machine Whether the design makes sense
Also dThe attachment of the tensile testing machine is a very important part, and the design of the fixture is unreasonable, if the clamp test is broken near the clamp part, then the test data is invalid.
Second, whether the tensile testing machine was reset before testing
Tensile testing machines have one Memory function. If the test is started without deleting, the data from the last test will be mixed up with the data from this test, so the testing machine system simply cannot calculate accurately enough.
3. Whether the sample is clamped correctly
Specimen Clamping It is a very important link in the testing process. The specimen is clamped correctly. During the elongation process, the specimen only bears the tensile force in the upper and lower Direction. At this point, the test results are accurate. If the specimen is clamped askew, the specimen will be subjected to tensile forces in multiple directions, and the test results will naturally become inaccurate.
Fourth, whether the train speed of the tensile testing machine conforms to the standard
In general, each material has a corresponding test standard to indicate its tensile test speed. If the tensile speed is too fast or too slow, the test data will be different. I likeimproved the accuracy of the test data. , it is necessary to set the train speed strictly according to the test standard.
