The core purpose of air tightness testing for automotive aluminum castings is to ensure that the castings will not leak when subjected to certain pressure, thereby ensuring their safety and durability during use. During the testing process, the castings are mainly inflated, pressurized, tested, and vented using testing instruments. The sealing performance of the castings is judged based on the testing parameters and actual testing conditions.
Specific testing steps:
1. Observe the appearance of the casting: Firstly, conduct a visual inspection of the casting to ensure that there are no obvious defects.
2. Design specialized fixtures: Design specialized upper and lower mold fixtures based on the structure of the casting, and merge them to form a sealed space.
3. Calculate detection parameters: According to the airtightness requirements, calculate and adjust the parameters of the detector, such as -1.5kpa, to ensure the effectiveness and correctness of the detection.
4. Start detection: Place the casting into the fixture and start the detection instrument. The instrument automatically performs processes such as inflation, pressure maintenance, testing, and exhaust.
5. Judgment result: Determine whether the sealing of the casting is qualified based on the testing parameters and actual situation. If it is qualified, it will display "OK", and if it is unqualified, it will display "NG". Automatic storage of detection data for easy traceability and production management in the later stage.
The traditional water detection method is inefficient and inaccurate, while the gas detection method, although efficient, may have the problem of missed detections. The solution is to adopt more advanced detection equipment and technology, such as direct pressure airtightness detectors, to improve the accuracy and efficiency of detection.
Suzhou Loho Electronic Technology Co., Ltd. specializes in airtightness detectors, airtightness detectors, leak detectors, airtightness leak detectors, airtightness testers and other equipment. They are widely used, have fast detection speed, and are suitable for sealing, waterproofing, airtightness, leakage and other fields. Welcome to inquire by phone: 189-1262-8676
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