Cannot ignore the tightness test of drum sealer
Sinopec Sales Company Zhuzhou Company Hu Yaozong
In Appendix A of GB325, Figure A8 shows the airtightness test diagram after the assembly of the buccal components. According to the principle of this diagram, the manufacture of an airtightness testing device is considered extremely important. From the perspective of the practices of some manufacturers, they said with deep feelings: "This equipment solves a big problem." Because the quality of the assembly of a few barrel top coils is checked every day, it is not only necessary but also a must-go. Ignoring major events. The helix flange lock is extremely important in the detection of "International Maritime Danger Regulations". Slight carelessness does not deform the threads of the coil, which may affect the fit of the barrel plug. This affects the sealing performance of the assembly and therefore cannot withstand the locking torque of the standard. Flanged locks sometimes produce microcracks, which are easily overlooked and difficult to find in time. Once discovered, they may be transferred to the next process in large quantities. It would be even more troublesome if it was already installed on a finished steel drum.
In recent years, I have checked the product inspection situation of more than 30 brothers factories. Found that many manufacturers of products, the quality level is not bad, but can not pass the "International Maritime Dangerous Regulations" Class I standards. The reason is: Some manufacturers will only focus on seam welding, especially on triple hemming, ignoring the lock of the coil, making it a weak link, so that when the drop, the triple curl does not leak, welding The seam is also good, but the "second mouth" runs out of water. In the hydrostatic test, the steel drums were subjected to a pressure of 0.25 MPa, and the top of the drums bulged more than one hundred millimeters, causing the leaks due to the locking of the spiral ring. Some manufacturers have broken the helix edge, and have not found that some plants one-sided pursuit of the firmness of the lock, resulting in the barrel plug can not be interchanged. Therefore, it is necessary to pass the detection of the airtightness of the barrel mouthpiece to properly adjust the punching equipment so that it is in the best state of use. When the device is in use or in use, sometimes it may cause minor changes and destroy the device's best use state, it can also be discovered in time through the device.
Steel drum sealer air tightness tester as specified in the standard
The situation before and after the drop test of the drum stopper when there is a quality problem with the lock