May I ask about the protection of flange sealing surfaces?
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What does this phrase on the heating furnace equipment diagram mean?
Apply rust-proof grease to the machined surface of the flange, and cover the sealing surface of the flange with a plastic cover, metal cover, or plywood cover that provides reliable fixation at two or more points.
The machined surfaces and threads should be oiled to prevent rust, and plates should be added to protect the sealing surfaces at both ends to avoid damage from impacts during transportation.
The important mating surface of the flange is the sealing surface, which has high requirements; a protective plate must be used to prevent the sealing surface from being damaged due to impacts during transportation.
It protects the sealing surface; otherwise, it won’t be able to seal properly if touched
It’s equivalent to adding a protective cover to the sealing surface.
The important mating surface of the flange is the sealing surface, which has high requirements; a protective plate must be used to prevent the sealing surface from being damaged due to impacts during transportation.
Flanges are components that are easily overlooked, and they are also the parts most prone to problems. Scratches and dents on the sealing surfaces, the anti-corrosion coating on areas that are not sealed, and the oiling of bolts – all of these are difficult to ensure are done properly; therefore, clear regulations are necessary.