Hebei Qinghe Dezheng Auto Parts Co., Ltd. : Test Standard for Automotive Rubber Hues (4)
Description:8, volume expansion test: the hose should not produce obvious volume change under the pressure of th....
8, volume expansion test: the hose should not produce obvious volume change under the pressure of the liquid transmission. The method of measuring volume expansion is to connect the hose to a hydraulic source, and the other end is connected with a measuring tube of the liquid volume after the hose expansion. The pressure in the hose is raised to the test pressure to make the hose expand, and then close the hydraulic source, open the valve connected with the measuring tube, then the volume of the expansion part of the liquid rises to the measuring tube, you can measure the expansion volume.
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