What are the methods of airtightness test for the tank leak detector?

What are the methods of airtightness test for the tank leak detector?

After inflating the measured object, directly measure the pressure change inside the measured object with a pressure gauge, U-tube or pressure sensor, and then calculate the leakage of the measured object. Its advantage lies in the simple structure of the test system. However, when the test environment is messy (such as temperature effect), the accuracy is required to be high and the leakage is small, or to save time and improve efficiency, this test method requires the accuracy of the pressure gauge or pressure sensor to be properly high, which makes this test method costly and even difficult to complete.

2023-02-06

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What should be paid attention to when welding the nozzle of the insulating cup?

What should be paid attention to when welding the nozzle of the insulating cup?

When the back side is filled with argon for protection, the air in the pipe has been in eddy current motion and is difficult to be discharged. Even if the replacement time is extended, the oxygen content can reach<0.01% (volume fraction) when the inner seal is fully sealed, but after opening the groove and starting welding, the oxygen content will rise to 0.05% (volume fraction) or even higher. The high oxygen content causes the oxidation of the weld bead back surface to turn blue or purple.

2023-02-06

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Do you know how to choose the water pipe welding machine?

Do you know how to choose the water pipe welding machine?

Do you know how to choose the water pipe welding machine? Here we have also sorted out some relevant content for you. If you don't know it well, you must read it. I hope this article will also help you!

2023-02-06

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