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Loose flange: loose flange is commonly known as loose flange, welding ring loose flange, flanging loose flange and butt welding loose flange. It is often used in medium (determinant material) temperature and pressure It is not high and the medium is highly corrosive.
Today we talk about the types of forged flange sealing surfaces. There are three topics. For this topic, forged flanges, stainless steel flanges, carbon steel flanges, welded flanges, and flat welded flanges can be found in a lot of related information.
Summarized our own unique views on the topic of three types of forged flange sealing surfaces. The following is our own opinion on this topic, hoping to help you.
However, because it is suitable for single-piece production and is low cost, the stamping flange process is mostly used for the manufacture of small batches and thick-walled flanges.
The quality of the forged flange material is poor in hardenability, and its core hardness is generally only more than 30 degrees. Under normal circumstances, forged flanges are often treated with water quenching. The chromium content is 0.1% to 0.5%, and the carbon content is below 1.0%. And the forged flange is made by high-temperature forging. Although the surface hardness of some forged flanges can reach ≥56, the hardness of the core is generally only more than 30 degrees because of the poor hardenability of the forged flange material.
The neck flange is a part that is connected to each other between the shaft and the shaft, and is used for the connection between the pipe ends; it is also useful for the flange on the inlet and outlet of the equipment and is used for the connection between two equipment, such as the flange of the reducer.
The butt welding flange is a kind of pipe fitting, which refers to a flange with a neck and a round pipe transition, which is connected to the pipe by butt welding. It is not easy to deform, has good sealing, and is widely used.
It is suitable for pipelines with large fluctuations in pressure or temperature or high-temperature, high-pressure and low-temperature pipelines.
The advantage is that the price is relatively cheap, and the nominal pressure does not exceed 2.5MPa;
On the pipeline of the flammable and explosive medium, the nominal pressure is about PN16MPa. Flange pipe fittings are easy to install and have good thermal conductivity and are suitable for floor heating systems.
Questions about the principle and characteristics of flat-welded American standard flanges have always been a topic that everyone attaches great importance to. It is related to the production cost or economic benefits of the company and the company. Therefore, the sealing principle of flat-welded flanges and Features is constantly being refined and improved.
The butt welding flange produced by the butt welding flange adopts certain technical parameters and requirements for production and use during production and production, so as to ensure that it can be used and promoted according to certain methods and principles, and adopts certain process methods and principles for production and use.
Welding strictly guarantees good quality in use. Welding flanges are suitable for steel pipe connections with a nominal pressure not exceeding 2.5MPa.
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