ZHENGSHAN TECHNOLOGY

The feeding speed of seamless calcium wire is an important factor affecting the quality of molten steel. The speed of calcium wire feeding directly affects the dissolution and distribution of calcium elements in molten steel, thereby affecting the process effects of deoxidation, desulfurization, and control of inclusion morphology in molten steel. The specific impact of seamless calcium wire feeding speed on the quality of molten steel is as follows:
The impact of fast feeding speed
Incomplete dissolution of calcium element:
When the feeding speed is too fast, the calcium wire stays in the molten steel for a short time, causing the calcium element to not be completely dissolved and forming undissolved calcium particles.
These undissolved calcium particles not only waste calcium resources, but also have a negative impact on the fluidity of molten steel.
Increased inclusions:
Rapid feeding can lead to the formation of a large number of small inclusions in the calcium wire in the molten steel, which are difficult to remove and affect the purity of the steel.
The increased inclusions may also lead to problems such as cracks and fractures in the subsequent processing of the casting billet.
Poor deoxygenation and desulfurization effects:
Rapid feeding can lead to uneven distribution of calcium elements in molten steel, affecting its deoxidation and desulfurization effects.
The oxygen and sulfur content in molten steel may not reach the expected reduction level, affecting the quality of the steel.
The impact of slow feeding speed
Excessive consumption of calcium:
When the feeding speed is too slow, the calcium wire stays in the molten steel for a longer time, leading to excessive consumption of calcium elements.
Excessive consumption of calcium not only increases the cost of using calcium lines, but also leads to unstable calcium treatment effects.
Extended processing time:
Slow feeding speed can lead to prolonged calcium processing time and affect production efficiency.
The extended processing time may also lead to a decrease in the temperature of the molten steel, affecting its casting performance.
The difficulty of controlling the morphology of inclusions increases:
Slow feeding speed can lead to excessive concentration of calcium elements in the molten steel, forming large particle inclusions.
These large particle inclusions are difficult to remove through normal refining processes, affecting the purity of molten steel and the mechanical properties of the casting billet.
Appropriate feeding speed
Balanced dissolution and consumption:
The appropriate feeding speed should be able to ensure sufficient dissolution of calcium while avoiding excessive consumption.
Normally, the feeding speed should be adjusted based on factors such as the temperature, weight, and diameter of the calcium wire of the molten steel.
Uniformly distributed calcium element:
The appropriate feeding speed should be able to evenly distribute calcium elements in the molten steel, thereby improving its deoxygenation and desulfurization effects.
Uniformly distributed calcium elements can effectively change the morphology of inclusions, improve the castability of molten steel and the mechanical properties of castings.
Optimize processing time:
The appropriate feeding speed should be able to complete calcium treatment in the shortest possible time, thereby improving production efficiency.
Optimized processing time can also avoid a decrease in the temperature of molten steel and ensure its casting performance.
summary
The feeding speed of seamless calcium wire has a significant impact on the quality of molten steel. Too fast or too slow feeding speed can cause calcium elements to not fully play their role in molten steel, affecting the process effects of deoxidation, desulfurization, and control of inclusion morphology in molten steel. Therefore, in actual production, reasonable feeding speed control should be carried out according to the specific situation to ensure the uniform distribution of calcium elements in the molten steel, improve the quality and production efficiency of the molten steel.