With the development trend of today’s society, the use of flange fittings is more and more common, so what is the production and processing process of plate welding flange? Generally speaking, it can be divided into four types of processes, and then we will interpret it in detail.
Process of flat welding flange
The first type: Using scrap metal pins to practice embryo, the cost is low, in view of the fact that most furnace is a small workshop material can not be guaranteed, the second process is relatively simple.
The second category: steel plate cutting flange is generally a steel plate manufactured by the company, the material is more standardized, in general, the small eye is easier to produce and process, low cost, and the quality can be guaranteed.
The third type of large diameter flange is generally cut into a drum with steel plate, the material is not good, only the middle of the welding surface, although the reverse side can not see the welding joint, but it is still not recommended for high pressure pipelines.
The fourth type: the forged flange material is good and high density, the production and processing become more complicated, but the cost performance is high, many enterprises only ask the price, do not ask the material, can buy cost-effective products?
Flat welded flange is a kind of pipe fittings, not easy to change, sealing, common use, has the corresponding rigidity and ductibility provisions and effective reverse welding refining transition period, the welding joint distance from the joint surface is large, the joint surface will not be affected by the welding temperature change, the selection of more complicated hob style structure
Flat welded flange can be used for resistance or temperature fluctuations of the pipeline or high temperature, high pressure, low temperature pipelines, generally used for PN higher than 2.5MPa pipe and valve connection, can also be used for the transmission of more expensive, flammable pipelines
Design defects of flat welded flange
No leakage can be guaranteed, which is the deficiency of its design: the connection is dynamic, and periodic loads such as thermal expansion and fluctuation will cause movement between the flange faces, affecting the function of the flange, thereby destroying the integrity of the flange, and eventually leading to leakage.
Any product can not be without defects, and can only try to control the defects of the product to a minimum. Therefore, the company in the production of flat welding flange, should try to improve the performance of the product, so that it can play the greatest role.
The above explanation is the four types of process details of flat welding flange processing, want to know more about the flange, elbow related knowledge, you can consult our customer service staff, we will have specialized personnel to answer your questions
