With the different detection accuracy, detection costs gradually increased, including equipment and normal use of consumables. Different air pressure detection methods are selected according to different test occasions and detection accuracy.
1, hydrostatic test mainly refers to the overall strength test for the measured parts, generally 2 times to 1.5 times work pressure of normal working pressure. Testing the overall tolerance pressure of the measured product. For example, the cylinder pressure test, hydraulic pressure test is 1.5 times the work pressure of the measured piece, when the normal working pressure is 20MPa test pressure, the water pressure strength test is 30MPa, the test pressure of the winding cylinder is slightly different.
2. The air pressure test is mainly used to detect the micro hole leakage of the test piece. The test pressure is 1.25-1.15 times pressure of the normal working pressure. Commonly used methods include bubble method, differential pressure method, direct pressure method, flow detection method, helium leak detection and other methods.
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