News
News
Failures Caused by Manufacturing & Installation of SS Flanges (Part One)
- Posted: 02/10/2022 07:02:26
- Hits: 122
Abstract: Two typical cases in chemical plants are listed. The failures of flanges are caused by manufacturing and installation. After analyzing and studying the failed parts, it is found that the surface defects in the forging process and the improper selection of welding materials or processes are...
Current Status of Research on Bolted Flanges
- Posted: 01/06/2022 02:01:36
- Hits: 19
In recent decades, the work done by domestic and foreign researchers on bolted flanges has focused on the performance of gaskets and loosening of bolts, and significant progress has also been made in some areas. Bolted flanges are generally in the assembly structure, and accurate and...
Bolted Flanges
- Posted: 12/22/2021 04:12:02
- Hits: 36
Sealing by gaskets is the most important static sealing at the detachable joints of pressure vessels, process equipment, power machines and connecting pipes in industrial units. Their working conditions are very complex, and the range of media is quite wide. Preventing liquid or gas from...
Structure of Austenitic SS Bellows & F6NM Martensitic SS Flanges after Welding (Part Two)
- Posted: 12/08/2021 07:12:42
- Hits: 22
Observed the microstructure of the heat-affected zone, fusion zone and weld metal zone on the F6NM martensite flange side, as shown in Figure 5. In the as-welded state, the base metal and weld metal of the F6NM martensite flange side (Figure 5a) were well formed, and there were a...
Structure of Austenitic SS Bellows & F6NM Martensitic SS Flanges after Welding (Part One)
- Posted: 11/25/2021 01:11:43
- Hits: 49
Abstract The microstructure and mechanical properties of the welded joints of 316Ti stainless steel bellows used for valves and F6NM martensitic stainless steel flanges in the as-welded state and post-weld heat treatment (PWHT) were studied in this article. The results showed that the...
Strength and Hardness of Metal Gaskets of Flanges
- Posted: 10/22/2021 10:10:18
- Hits: 203
In order to be resistant to corrosion in the atmosphere, if the flange is in an industrial atmosphere or a heavily polluted area, it needs to be cleaned in time to avoid corrosion. Stainless steel flanges are suitable for food processing, storage and transportation. In high-pressure equipment and...
The Manufacturing of Welding Flanges
- Posted: 09/24/2021 11:09:56
- Hits: 159
The welding process of the flange The welding process of the flange is to fix two pipes, pipe fittings or equipment on a welding first. Put a gasket between the two welds, and then use bolts to complete the connection. Welding is an important connection for the construction of...
The Processing Technology of SS 316L Flanges
- Posted: 07/12/2021 11:07:29
- Hits: 35
Abstract: In the processing of SS 316L flanges, certain problems are found in the first trial cutting piece, such as not being able to mass-produce due to low efficiency, and accuracy not meeting the standard. Analyze the causes of these problems, and then take...
Failures of Sealing of Flanges on the Top of the Cryogenic Tank's Pump Well (Part Three)
- Posted: 06/28/2021 11:06:23
- Hits: 81
3. Measures to avoid leakages at the flange's sealing surface of the pump well Leakage of the flange surface of the pump well will cause serious damage to the top of the low-temperature tank. The core of solving the problem of sealing leakage at the flange of the pump well is...