How to prevent the decarburization of thick-walled steel pipes?
Published:
2020-08-05
The medium that causes the decarburization of the surface of the thick-walled steel pipe is mainly oxidizing gases such as oxygen, water vapor and carbon dioxide. When these gases come into contact with the heated spiral tube,
The medium that causes the decarburization of the surface of the thick-walled steel pipe is mainly oxidizing gases such as oxygen, water vapor and carbon dioxide. When these gases come into contact with the heated spiral tube, it will cause oxidation and decarburization of the spiral tube. Therefore, control the carbon dioxide in the furnace. The ratio to carbon monoxide is also very important.
The service life of the thick-walled steel pipe is related to the surface decarburization of the precision pipe. If the surface is decarburized, the strength and wear resistance of the spiral pipe will be reduced, which will directly affect the service life of the spiral pipe. If the decarburization layer on the spiral tube is not cleaned, the hardness and wear resistance of the surface layer of the spiral tube will be correspondingly reduced, and during the quenching process, the surface of the workpiece will be caused by the volume change of the inner and outer layers. cracks are formed.
How to prevent the decarburization of thick-walled steel pipes, the following is the answer: To solve the problem of decarburization of the surface, the main thing is to deal with the heat treatment process, because the decarburization and the oxidation of the spiral pipe are carried out at the same time, so in the process of heat treatment In the process, the thick-walled steel pipe should be kept from contact with the air as much as possible, which can improve the decarburization phenomenon.
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