It usually refers to the disc-shaped metal body with several fixed holes on the outside, used to connect other parts, is widely used in machinery, neck flat welded flange according to the connection with the pipe can be divided into five categories: flat welded flange, welded flange, threaded flange, socket welded flange and loose sleeve flange
Among them, the flat welded flange can be divided into neck flat welded flange and no neck flat welded flange. Due to the low neck height, the stiffness and bearing capacity of the neck welded flange are improved, and the on-site installation is more convenient and popular. Then do you know what parts are composed of neck welded flange? What is the working principle of flat welded flange with neck?
Working principle of flat welded flange with neck
The following Xiaobian I will briefly introduce it for everyone to understand, before understanding how it works, we first answer the previous question, that is, what parts it is composed of
The whole product comprises a flange with an inner hole in the center and a plurality of screw holes on the flange. One side of the flange is provided with a neck convex, the inner diameter of the neck convex is equal to the inner diameter of the inner hole and is connected with each other.
The other side of the flange has a circular depression, the center of which coincides with the central axis of the inner hole, and its radius is greater than the radius of the inner hole. It is precisely because of the structural characteristics of the neck flat welded flange (the overlap of the circular concave and the circular concave) that the neck flat welded flange is inserted into the inner hole of the tube body for lap welding.
The welding operation can make the pipe and the material between it form a weld, more firm and tight, thereby improving the welding stability between the pipe body, that is, the neck flat welding flange improves the strength and bearing capacity of the flange, and can be used for pipelines with higher pressure
However, there are some problems with the neck welding flange, that is, compared with the welding flange, the neck welding flange welding workload is large, the electrode consumption is high, can not withstand high temperature and pressure, repeated bending and temperature fluctuations, and compared with the flat welding flange, the cost is higher, because of its shape, it is easier to bump in the transportation process, this should be considered when selecting the neck flat welding flange.
