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Why does the steelmaking temperature have such a significant impact on seamless steel pipes?
Release time:
2021-11-12
Seamless steel pipes are constantly undergoing technological updates in the production process. The most significant update is the control of steelmaking temperature. Previously, there weren't strict requirements for steelmaking temperature; it was only given minor attention. However, after a customer reported a large gap at the joint of our products, affecting their use, we started to pay attention to the steelmaking temperature as a possible source of the problem. We have been continuously improving this issue and have finally seen results. We should thank the customer for their valuable feedback.
Seamless steel pipes are constantly undergoing technological updates during production, the most significant of which is the control of the steelmaking temperature. Previously, we didn't have strict requirements for steelmaking temperature; we only paid minimal attention to it. However, after a customer reported that our products had large gaps at the joints, affecting their use, we started to notice a problem with the steelmaking temperature. We have been continuously improving this issue, and have finally seen results. We should thank the customer for their valuable feedback.
This introduces the technical requirements for high-temperature seamless steel pipes used in cracking furnaces, along with details on furnace pipe manufacturing and inspection. Properties: Also known as thermal cracking or pyrolysis. This is the process where hydrocarbon molecular chains break down into smaller, unsaturated hydrocarbons at high temperatures (above 700℃). High-temperature resistance, during cracking, is accompanied by condensation, cyclization, and dehydrogenation reactions. Because the reactions involved are complex, they are usually divided into two stages for analysis.
In the first stage, the raw materials are converted into ethylene and propylene, the desired products. This reaction is called a primary reaction. In the second stage, the ethylene and propylene produced in the primary reaction continue to react and transform into alkynes, dienes, aromatics, cycloalkanes, and even eventually into hydrogen and coke. This reaction is called a secondary reaction. Therefore, cracking products are often mixtures of multiple components. The basic factors affecting cracking are primarily temperature and reaction duration, as well as the type of hydrocarbon feedstock. In chemical production, thermal cracking is used in cracking furnaces (tubular furnaces or regenerative furnaces) to convert petroleum hydrocarbons into small-molecule olefins, alkynes, and aromatics such as ethylene, propylene, butadiene, acetylene, benzene, and toluene.
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