Teach you how to avoid defects in the welded flange

The primary design disadvantage of a welded flange is that it does not ensure that there is no leakage. This is the lack of design: the connection is dynamic, and cyclic loads such as thermal expansion and undulations will constitute the movement between the flange faces, affecting the function of the flange, thus impairing the integrity of the flange, and finally Lead to leakage. Any product may not have no defects, just try to control the lack of products at least, so the company tries to improve the function of the product when producing flat welding flanges, so that it can exert great effects.

Sealing principle of the welded flange: The two sealing faces of the bolt knead the flange gaskets to each other and form a seal, but this also causes damage to the seal. In order to adhere to the seal, it is necessary to adhere to the huge bolt effect, for which the bolt is to be made large. Large bolts are matched to large nuts, which means that large diameter bolts are required to create conditions for tightening the nuts. However, the larger the diameter of the bolt, the more suitable the flange will become, the way to increase the wall thickness of the flange portion. The entire device will require a large size and weight, which becomes a special problem in the offshore environment, because in this case the component is always the primary concern. And, fundamentally, the flat weld flange is an ineffective seal that requires 50% of the bolt load to be used for the kneading gasket, while the load used to hold the pressure is only 50%.