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What are the advantages of stainless steel flanges? What to pay attention to when welding

Source:Jiangsu Jinchuang Xintian Pipe Industry Co., Ltd. Release time:2022-06-22 14:27:34 Author:47253

In the construction of large-scale pipelines, we can see stainless steel flanges as pipe fittings. Because stainless steel flanges have many excellent characteristics, they are widely used in large-scale pipeline construction. However, because the stainless steel flange itself is not a common component, many people do not know much about stainless steel flanges. So what exactly is a stainless steel flange? What are the specific advantages?


1. Advantages of stainless steel flanges
Stainless steel flanges are pipe components mainly made of stainless steel, and stainless steel itself has excellent performance. Stainless steel can effectively resist corrosion, pitting and rust in use, and stainless steel is very rigid and difficult to wear. Stainless steel is one of the strongest materials in metal materials for construction.

Stainless steel flanges maintain the engineering integrity of structural parts because of their very good corrosion resistance. Different stainless steel flanges have different properties. For example, chromium-containing stainless steel flanges have higher mechanical strength and higher tensile strength, making parts easier to forge, which can meet the needs of architects and structural designers.

Stainless steel has excellent corrosion resistance for permanent design integrity. It is easy for production enterprises to process and manufacture, and meets the requirements of architects and designers for the continuous development of structures. All metals react with oxygen in the atmosphere to form an oxide film on the surface. For example, the structure of the oxide film on the surface of ordinary carbon steel pipe is very loose, and the interval is large, and there is no way to prevent further erosion by water and air, so the oxidation will continue to expand. Contrary to carbon steel pipe fittings, stainless steel pipe fittings can form a dense oxide film on the surface of stainless steel pipe fittings, which can block the progressive oxidation of water and air. It is for this that stainless steel has excellent oxidation and corrosion resistance.

2. Types of 304 stainless steel flanges
The most common ones we usually see are flat welding flanges and butt welding flanges. In fact, we can also produce more than ten kinds of 304 material neck socket welding flanges, butt welding ring neck loose sleeve flanges, and integral flanges. , they are distinguished according to industry standards, such as petrochemical industry, machinery industry, etc.

The production methods of 304 stainless steel flanges are mainly divided into four types: forging, casting, cutting and rolling.

3. Matters needing attention in the welding of stainless steel flanges
When welding, the current should not be too large, and the stainless steel flange should be cooled quickly, which can prevent the stainless steel flange from being damaged.

When making stainless steel flanges, the more traditional process is to add appropriate stabilizing elements to the stainless steel flanges, which can improve the performance of the stainless steel flanges to a certain extent.

4. How to choose qualified 304 raw materials
In the past, when 304 raw materials were selected, spectrometers were used for testing. This kind of equipment is slow in efficiency and inconvenient to carry. Later, our company introduced a direct reading machine worth hundreds of thousands of yuan, which greatly improved the work efficiency. The equipment is not large and easy to carry. , the detected value is more accurate.