In industrial production, one type of product has to be used, and the use of this type of product has two characteristics, one is to use in pairs rather than to use alone; the other is that it can be combined with bolts and gaskets to form a detachable Connectors can be used to connect pipes or equipment. I believe this type of product does not need to be said, everyone can guess what it is, yes, it is a flange. We all know that there are many classification methods and types of flanges, but no matter what kind of flange it is, it is prone to deformation during the actual use of the flange. What is going on? What caused the flange deformation? How can we prevent or reduce flange deformation?

The main reasons for flange deformation are as follows:

(1) Flange material

We all know that there are many materials that can be used to produce flanges, such as carbon steel, low alloy steel, stainless steel, etc., especially the former (carbon steel). The raw materials of carbon steel flanges are very soft. It is generally recognized that if the dimensions of a large flange are larger, flange deformation will easily occur when the flange is used.

(2) Flange production

Due to the different actual use of flanges, customers have different requirements for flange production. Some customers require flanges to be thinner, and some customers require flanges to be thicker. In the process of making large-diameter flanges, there is usually no problem of deformation, and there is no problem of deformation when the machine is disposed. However, in the process of using large-diameter flanges, if the flange is too thin, it is It is susceptible to deformation due to the influence of heavy objects, pipes and its own weight.

(3) Flange packaging and transportation

Flange packaging methods mainly include bundled packaging, pallet packaging, bolt packaging, and flange packaging. When flanges are transported and packaged, pay attention to using wooden strips, straw or plastic foam to protect them, and the packaging must be firm, especially non-metallic methods. The flange should also prevent mechanical damage and deformation, so as not to affect the sealing effect of the flange.

(4) Flange use

Under normal circumstances, flanges are used in piping systems. The flanges will come into contact with the medium. If the temperature of the medium is high or corrosive, some scale will form on the flange, and this scale will Corrodes the flange, which in turn causes the flange to deform.

Now that we have understood the causes of flange deformation, we naturally know how to prevent or reduce flange deformation. We also need to focus on the four aspects of flange material, flange production, flange packaging and transportation, and flange use. Starting from various aspects, some measures have been taken, such as: flange galvanizing, forming a special metallurgical structure on the flange surface, this structure will not have much impact even if it is mechanically damaged during transportation and use, even if it is recessed Places, sharp corners and hidden places can be fully protected...

Okay, the above is the explanation of the causes of flange deformation and the introduction of methods to prevent deformation. I hope everyone can understand, and then use the flange correctly to give full play to its proper sealing performance.