The air tightness test process for an automotive gearbox normally includes the following steps:
1. Preparation: seal the gearbox and make sure there is no obvious leak point, then connect the air supply system and the test instrument ready for the air tightness test.
2. Establish a pressure difference: feed a set air pressure into the gearbox through the air supply system and create a relatively low-pressure environment outside it, forming a pressure difference.
3. Monitor the pressure: pressure sensors monitor the internal pressure in real time. If the gearbox is well sealed the pressure stays stable; a drop or large fluctuation indicates a possible leak.
4. Analyse the results: show the test results as numbers or graphs through the control and display system, and judge whether sealing performance meets the requirement.
5. Act on the results: if a leak is found, repair the gearbox or replace its seals; if sealing performance meets the requirement the gearbox can continue in service.
6. Records and reports: record the results and produce a test report including the test date, instrument model, test parameters and results.
Air tightness testing of an automotive gearbox (gearbox) detects and solves gearbox leakage problems in time and keeps equipment running safely. The exact steps may vary with the equipment and instrument, so please read the manual carefully before use and follow the instructions.
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