Cracks occurred in the stainless steel tank, please analyze it
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Please analyze the reason. The material is 304, the medium is tap water, about 3bar, and the usage time is 12 years.
Is it because the location of the weld is defective?
Is it because the location of the weld is defective?
What is the diameter of the cylinder and wall thickness? Do you have any data? The cylinder cracked longitudinally, and it is estimated that it cannot withstand pressure.
The cracked weld should be caused by the insolubility of the tank material and the welding rod material.
You can analyze the quality of tap water to see if the chlorine ions exceed the standard, and check the spectrum of the stainless steel cylinder to see if there are any problems with the material. From the photos, the possibility of stress cracking of the weld is relatively high.
Since the stainless steel equipment has been used for so many years, judging from the shape of the cracks, it is not a quality problem of the storage tank itself, but a change in water quality. It should be chloride ion stress corrosion cracking.
Judging from the shape of the cracks, they are irregular and the equipment has not deformed. It should be that the chloride ions in the water exceed the standard and cause stress corrosion, not overpressure of the equipment.