What aspects of the Automotive Wiring Harness Protection Sleeve need to be tested before use

The Automotive Wiring Harness Protection Sleeve must be tested in all aspects before use, otherwise it will damage the service life of the Automotive Wiring Harness Protection Sleeve. The following editor will briefly introduce the aspects that we should test from:

1. Before testing the size of the Automotive Wiring Harness Protection Sleeve, we must first look at its appearance and pay attention to whether there are bubbles, impurities, black spots, etc. on the tube wall. Once these exist, it will affect its service life. The second is to check the size and size. The precision will directly affect the flow rate of the pump, which is mainly determined by the inner diameter of the hose, the larger the inner diameter, the greater the flow rate. The outer diameter or wall thickness affects the life of the hose. If the wall thickness exceeds the normal tolerance, the hose will appear stiff, which will affect the operation of the pump body.
2. To test the wear resistance, fatigue resistance and resilience of the protective sleeve of the Automotive Wiring Harness Protection Sleeve, it is recommended to adopt the limit test method, adjust the speed of the Cable Sleeve to the highest speed, transport the weak corrosive fluid, and observe the flow change of the Cable Sleeve every day , continuous start-up, the hose is not damaged, and its flow rate does not change significantly, which shows that the resilience, fatigue resistance and wear resistance of the hose are very good.
3. Test the aging resistance and corrosion resistance of the Automotive Wiring Harness Protection Sleeve. Take a piece of sample tube, record its weight, inner and outer diameter, length and other parameters, soak the hose in a glass beaker, take out the hose after 72 hours, wash it with clean water, dry it, and measure its weight, inner and outer diameter and length again. Observe its changes; by the way, check whether the hose is softened, brittle, whitish, cracked, etc. If there is any change, it means that the hose has been chemically affected by the liquid, which means that the Cable Sleeve has poor aging resistance and corrosion resistance. Each candidate cable bushing sample should be put into the actual factory environmental conditions for trial operation, and the test results should be closely observed. If the Cable Sleeve does not show discoloration, swelling, cracks, loss of fluidity, or other signs of deterioration after trial operation, it proves that the Cable Sleeve has excellent chemical stability.
4. The last is the certification required for the Automotive Wiring Harness Protection Sleeve, such as FDA, LFGB, USP CLASS VI, etc. These need to be determined according to the actual application field of the Cable Sleeve.