The pump casing has a trachoma
Thread Content
The pump in March 2016, after two months of use, developed trachoma.
It is normal for this kind of cast pump casing, especially the castings from some small factories, to have blisters. If the sand holes are not large, aluminum screws can be screwed into the sand holes to temporarily seal them, provided that the medium is non-corrosive.
It is a casting problem and can be blocked.
It is inevitable that the pump casing will have blisters during casting. The most important thing is that the pump casing was not tested for pressurized blisters before leaving the factory.
It's just that the initial inspection didn't detect it, but corrosion was discovered after a period of time.； Or it hasn't been inspected at all. Let's see if it's serious. If there is equipment, check the holes and repair them by welding. You can ask the equipment manufacturer to repair it.~
The volute is originally a casting, which is prone to trachoma. It was only three months after the opening that we found an equipment manufacturer to repair it and welded it directly on the outside.