The large-diameter steel flange is a kind of flange, which is widely used and promoted in the machinery industry and has been well-received and favored by users. Large-diameter flanges are widely used, and the range of use is determined according to different characteristics. They are mostly used in situations where the medium conditions are relatively mild, such as low-pressure non-purified compressed air and low-pressure circulating water. Its advantage is that the price is relatively cheap. The rolled flange is suitable for the connection of steel pipes with a nominal pressure not exceeding 2.5MPa. The sealing surface of the rolled flange can be made into a smooth type. It is also relatively common in use.
The large-diameter flange is cut into slats with the middle plate and then rolled into a circle. Then the water line, bolt holes, etc. are processed. This is generally a large flange, which can be up to 7 meters. The raw material is a medium board 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 manifested in the above places. If we all operate and use large-diameter flanges, we all need to understand their characteristics.
There are three types of large-diameter flange sealing surfaces: flat sealing surface, suitable for occasions where the pressure is not high and the medium is non-toxic; concave-convex sealing surface, suitable for occasions with slightly higher pressure; 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 have their 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 the large-diameter and large-scale forged flanges, there will be a layer of skin on the flange after the finished product comes out. If the bolt holes are just punched in the position of the layer of skin, water leakage will occur when pressing.
Post time: Dec-07-2022