Large-diameter flanges are a type of flange, that is widely used and promoted in the machinery industry and has been well-received and favored by users. Large-diameter flanges have a wide range of uses, and the scope of use is determined according to different characteristics. They are mostly used in relatively mild media conditions, such as low-pressure non-purified compressed air and low-pressure circulating water. Its advantage is that the price is relatively cheap. Rolled flanges are suitable for steel pipe connections with a nominal pressure not exceeding 2.5MPa. The sealing surface of the rolled flange can be made into a smooth type. The application volume of smooth rolled flanges and the other two types of rolled flanges are also relatively common in use.
Large-diameter flanges are cut into strips with a medium plate and then rolled into a circle. Then process water lines, bolt holes, etc. This is generally a large flange, which can be 7 meters. The raw material is a medium plate with good density. Large-diameter flanges are made of carbon steel, stainless steel, alloy steel, etc.
The production characteristics and uses of large-diameter flanges are mainly reflected in the above places. If we all operate and use large-diameter flanges, we all need to understand these characteristics they have.
There are three types of large-diameter flange sealing surfaces: flat sealing surfaces, suitable for occasions with low pressure and non-toxic media; concave and convex sealing surfaces, suitable for occasions with slightly higher pressure; tongue and groove sealing surfaces, suitable for flammable, explosive, toxic media and high-pressure occasions. What is the quality process of large-diameter flanges?
The quality process of large-diameter flanges is as follows: Large-diameter flanges produced using different processes have their own advantages and disadvantages, but this is not the case. For large-diameter flanges made of medium plates, the treatment of the joint position is the most critical. If this position is not welded well, leakage will occur. For forged large-diameter large flanges, there will be a layer of skin on the finished flange. If the bolt hole is hit at the position of the layer of skin, water leakage will occur when the pressure is applied.
We use the above quality process to make flanges, and correct operation to make a good product is what we all need to consider.
