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Hydrogen Cracking in Steel
"On Hydrogen-Induced Cracking in Steel"
Steel is the weight of metallurgy, which is relied on by all kinds of fortifications. However, the problem of hydrogen-induced cracking in steel often disturbs its quality and damages its use, so it is a deep concern for metallurgists.
Hydrogen, a tiny thing, enters the steel, and the changes it makes cannot be underestimated. It is inside the steel, like a silverfish hidden in the dark, gradually eroding its strength. At the beginning, the appearance of steel is not easy to detect, but the time passes, and hydrogen aggregates and becomes energetic, causing the steel body to gradually open the micro-gap, and eventually it becomes a risk of cracking.
Investigate the cause, the process of smelting, or there may be hydrogen sources mixed in. In ore and fuel, the hydrogen-containing substance has not been completely removed; when refining, the technique of controlling hydrogen is not refined, so that hydrogen sneaks into the steel. And the structure of steel is also related to hydrogen-induced cracking. At grain boundaries and dislocations, hydrogen is easy to accumulate. Due to the difference in structure, the potential for hydrogen-induced cracking is different.
Furthermore, the environment of service is also the cause of hydrogen-induced cracking. If the steel is in a wet place or encounters alternating stress, the activity of hydrogen increases, and it cooperates with the stress to make the cracking faster and faster.
To control the problem of hydrogen-induced cracking in steel, when smelting begins, the raw materials are strictly selected to remove the hydrogen-containing impurities. When refining, make good use of hydrogen control methods, such as vacuum degassing, to reduce the amount of hydrogen in the steel to an extremely low level. And optimize the structural structure of the steel to enhance its resistance to hydrogen. During service, the protection is comprehensive, avoiding the steel from harsh environments and reducing its stress load.
In this way, multiple measures can be taken to obtain good steel, avoiding the damage of hydrogen-induced cracking, and maintaining the strength of the construction and the length of the equipment.
Steel is the weight of metallurgy, which is relied on by all kinds of fortifications. However, the problem of hydrogen-induced cracking in steel often disturbs its quality and damages its use, so it is a deep concern for metallurgists.
Hydrogen, a tiny thing, enters the steel, and the changes it makes cannot be underestimated. It is inside the steel, like a silverfish hidden in the dark, gradually eroding its strength. At the beginning, the appearance of steel is not easy to detect, but the time passes, and hydrogen aggregates and becomes energetic, causing the steel body to gradually open the micro-gap, and eventually it becomes a risk of cracking.
Investigate the cause, the process of smelting, or there may be hydrogen sources mixed in. In ore and fuel, the hydrogen-containing substance has not been completely removed; when refining, the technique of controlling hydrogen is not refined, so that hydrogen sneaks into the steel. And the structure of steel is also related to hydrogen-induced cracking. At grain boundaries and dislocations, hydrogen is easy to accumulate. Due to the difference in structure, the potential for hydrogen-induced cracking is different.
Furthermore, the environment of service is also the cause of hydrogen-induced cracking. If the steel is in a wet place or encounters alternating stress, the activity of hydrogen increases, and it cooperates with the stress to make the cracking faster and faster.
To control the problem of hydrogen-induced cracking in steel, when smelting begins, the raw materials are strictly selected to remove the hydrogen-containing impurities. When refining, make good use of hydrogen control methods, such as vacuum degassing, to reduce the amount of hydrogen in the steel to an extremely low level. And optimize the structural structure of the steel to enhance its resistance to hydrogen. During service, the protection is comprehensive, avoiding the steel from harsh environments and reducing its stress load.
In this way, multiple measures can be taken to obtain good steel, avoiding the damage of hydrogen-induced cracking, and maintaining the strength of the construction and the length of the equipment.
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