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How to deal with the leakage of stainless steel flanges


Release time:

2023-02-15

How to deal with the stainless steel flange leakage problem, the application of flange, because the live flange is not good will leak. If such a situation arises, you do not need to worry. First of all, you must check the leaking parts. Because the coupling gap of the stainless steel flange is not large, so it is not possible to introduce sealant according to the gap to remove the leak.

Sealing engineering construction method According to the leak location of the spot research. In order to complete a more limited sealing, a fixed clamping method is selected to accommodate the leak to create a sealing cavity, and sealant is introduced to remove the leak.

The positioning device on the other side should be purchased. The workholding fixture must be the first to achieve the containment leak point. Create a sealing cavity between the oil plate flange and the line flange first. In order to prevent re-leakage in the potential leakage of the oil circuit plate and flange gap due to overturning, an annular cavity is introduced at the outer edge of the workholding jig and the oil circuit plate flange.

Because the flange plate of different diameters is easy to move to the small diameter flange plate side during the whole process of injection, a limited countermeasure is adopted. In the operation process, after the sealant dries and solidifies, the actual effect is carefully observed to carry out a part of filling, preventing the stress relaxation and turning off the introduction hole. Butt welding flange specification and adoption

High pressure vessel flange is divided into two types: flat welding flange and butt welding flange.

The long-neck type connection welding flange has thicker head and neck, which can enhance the stiffness. Thus, the maximum working pressure range (PNO.6 to PN6.4MPa) and diameter range (DN300 to DN2000Mm) are specified for application.

The available temperature range is -20 to 45010. As can be seen from the table, the following DN2000Mm specification models of B-type flat welding flanges are included in the specific scope of long-neck butt welding flanges. The specifications at the joints of these two flanges are exactly the same as the flange thickness. Thus, DN2000Mm below the B-type flat welding flange can be replaced with cold-rolled long-neck butt welding flange to reduce the product cost of the flange, and butt welding flange plate has two model specifications, with liner ring and no liner ring. When making machines and equipment with stainless steel, steel plate flanges and stainless steel plate liner ring can save stainless steel plate.