TOBO ALLOY GROUP
TOBO Alloy Group is a mature, steady and energetic high-tech company, specializing in manufacture of high-temperature alloys and corrosion resistant alloys, such as Hastelloy, Haynes, Monel, Inconel, Incoloy and nickel.
September 7, 2021
Main functions of flange:
1, pipe failure, easy to disassemble detection;
2. Connect the pipeline and keep the pipeline with good sealing performance;
3. If a certain section of pipeline has problems, it is easy to replace a certain section of pipeline.
Flat welding flange in production and use has certain technical requirements and technical parameters, according to a certain way and method of production and processing:
1. The butt weld of the ring shall be subjected to post-welding heat treatment and 100% ray or ultrasonic inspection, and the ray inspection shall meet the grade II requirements of JB4730, and the ultrasonic inspection shall meet the grade I requirements of JB4730.Butt welding flange adopts certain welding standards and technology production and processing, in line with the corresponding production standards and requirements of ***.
2, the production of flat welding flange steel plate should be ultrasonic inspection, no delamination defects, to ensure good quality and performance problems, in accordance with certain quality requirements of production and inspection, to ensure that the production and use of steel plate no quality problems;
3, should be along the steel rolling direction cut into strips, bending welding into a circular ring, and make the surface of the steel ring cylindrical.The steel plate shall not be directly machined into a neck flange in the production of the joint flange, and a certain technology shall be used for production and processing.
Flanges not only save space, reduce weight, more important is to ensure that the joint does not leak, with good sealing performance.The size of the compact flange is reduced by reducing the diameter of the seal, which will reduce the section of the sealing face.Second, the flange gasket has been replaced by a seal ring to ensure that the seal faces the sealing face.As a result, only a small amount of pressure is required to compress the cover tightly.With the reduction of the required pressure, the size and quantity of bolts can be reduced accordingly, so the final design of a small volume and light weight (70% to 80% less than the weight of traditional flanges) of the new product.Therefore, flat welding flange is a relatively perfect flange product, reducing the quality and space, plays an important role in industrial use.However, the main design disadvantage of a flat-welded flange is that it does not guarantee leakage.This is the design disadvantage: the connection is dynamic, and such things as thermal expansion and fluctuating periodic loads can cause movement between the flange faces, affecting the function of the flange, thus compromising the integrity of the flange and eventually causing leakage.No product can be without defects, just try to control the product deficiencies to a minimum, so the company in the production of flat welding flange to improve the performance of the product, make it play the role of DA.