The sealing principle of flat welding flanges. The issue of flat welding flanges is constantly a topic of concern for people, as it relates to the consumption cost or economic benefits of companies and enterprises. Therefore, the sealing principle of flat welding flanges is constantly being improved and perfected. However, the main design flaw of flat welding flanges is that they cannot guarantee no leakage. This is the lack of design: the connection is dynamic.
Moreover, cyclic loads such as thermal shrinkage and fluctuations can cause movement between flange faces, affecting the function of the flange and ultimately damaging its integrity, leading to leakage. No product can be without defects, it's just trying to control the lack of products as little as possible. Therefore, the company strives to improve the performance of products when consuming flat welding flanges, so that they can play a greater role.
The characteristics of flat welding flanges: Flat welding flanges not only save space and reduce weight, but more importantly, ensure that the joint does not leak and have good sealing performance. The reason for the reduction in compact flange size is due to the decrease in the diameter of the seal, which will reduce the cross-section of the sealing surface. Secondly, the flange gasket has been replaced by a sealing ring to ensure that the sealing surface matches the sealing surface.
In this way, only a small amount of pressure is required to tightly seal the sealing surface. As the required pressure decreases, the size and quantity of bolts can be correspondingly reduced, so a new product with small volume and light weight (70%~80% lighter than traditional flanges) has been designed. Therefore, the flat welding flange type is a relatively high-quality flange product that reduces weight and space, playing an important role in industrial use.
The sealing principle of flat welding flange: The two sealing surfaces of the bolt press the flange gasket against each other to form a seal, but this also causes damage to the seal. In order to maintain sealing, it is necessary to maintain a large bolt force, for which the bolts need to be made larger. And larger bolts need to be matched with larger nuts, which means that larger diameter bolts are required as a condition for tightening nuts.
