Anti-oxidation Corrosion Characteristics Of Precision Seamless Steel Tubes

Pipes are diversifying and comprehensive with the development of society. More industries are using different pipes, which requires pipes to meet more performance needs. Single pipes are constantly being phased out, and precision steel pipes are increasingly popular in different industries due to their superior performance. In the mechanical manufacturing industry, precision steel pipes are widely used in the process of building equipment. Moreover, in one piece of equipment, there are not only straight-line steel pipes, but also some precision-engineered steel pipes.

Everyone knows that whether it is a seamless steel pipe or a spiral submerged arc pipe, if it is left open for a long time, or if there is any friction, the oxide layer on the stainless steel surface will be damaged, and then it will be oxidized and rusted in a humid air environment. Therefore, the steel pipe should be placed in a sealed place as much as possible. However, precision steel pipe has a unique advantage because its surface is not easily oxidized, which is inseparable from the raw materials that make up the precision steel pipe. The precision stainless steel tube is a very thin and strong and stable chromium-rich oxide film (protective film) formed on the surface to prevent the oxygen atoms from continuing to infiltrate and continue to oxidize, thereby obtaining the ability to resist rust.

The seamless steel pipe indicates that the weaker corrosion resistance of the film will cause a pitting corrosion reaction due to the self-excited reaction, producing small pores, and will contain a highly corrosive solution with the near chloride ion, which accelerates corrosion. speed. In addition, the intergranular corrosion cracking inside the stainless steel destroys the film on the surface of the stainless steel plate. Therefore, the surface layer of the precision steel pipe should be cleaned and maintained at a certain level to better extend the life.

For the manufacture of precision steel pipes, it is necessary to feed the billet into the furnace for heating at a temperature of about 1200 Baidu. Hydrogen is mainly used as a fuel. In the heating process, the temperature control in the furnace is the most important part. It is necessary to control the temperature within a rated range, so as to ensure that the manufactured precision steel pipe can have more stable physical properties. After the heating is completed, it needs to be cooled by spraying water, because the steel pipe is straightened after cooling, so that the basic prototype of the precision steel pipe can be seen, and the entire manufacturing process is still complicated.

However, ordinary steel pipes indicate that they are not smooth enough, and the toughness and torsional strength are not good enough. Once the steel pipe is flared or flattened, cracks are likely to occur. When these cracked steel pipes are applied to the machine, the broken debris will fall. These residues will enter the more precise parts with the use of the equipment, so that the speed and progress of the equipment will be affected for a long time, and such equipment problems arise.

If a precision steel pipe is used, this phenomenon will be reduced by a larger layer. Because precision seamless steel pipe is a high-precision steel pipe material after cold drawing or hot rolling. This makes the pipe, high pressure and no leakage, even if it is flaring, or crushing, the pipe will not crack. This ensures the normal operation of the equipment, speeding up production efficiency and improving the overall benefits.

A worker from a steel pipe company, which is located in China.