Preventive measures for steel leakage during pouring process in the crystallizerIn order to prevent steel leakage during the pouring process, our preventive m
Preventive measures for steel leakage during pouring process in the crystallizer
In order to prevent steel leakage during the pouring process, our preventive measures are divided into the following aspects:
(1) In terms of equipment maintenance,
The usage of the crystallizer should be checked regularly to ensure the inverted taper of the crystallizer;
The crystallizer should be centered with the secondary cooling guide section to prevent the billet from being deformed and cracked due to mechanical force during the drawing process.
(2) In terms of crystallizer lubrication,
Make sure that the crystallizer is evenly lubricated to avoid the adhesion of the crystallizer and the billet shell and the suspension leakage due to poor lubrication.
(3) In terms of process operation,
Attention should be paid to stable operation, reduce the number and amount of changes in the pulling speed, keep the liquid level in the crystallizer stable, and avoid excessive or frequent fluctuations.;
At the same time, the liquid level in the tundish should not be too low to avoid a large amount of non-metallic inclusions or steel slag being caught in the crystallizer.For casting with mold powder, mold powder with a good molten state and moderate viscosity should be used;
In addition, high-temperature steel with too much overheating should be avoided, because the impact of high-temperature molten steel on the breakout accident and the quality of the cast slab is quite obvious.
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Harm of too high temperature: when molten steel out of cooper mold, the billet shell is thin and easy to break out; The accelerated erosion of refractory can ea
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1. The barrier function (mainly completed by the liquid slag layer) isolates the contact between air and molten steel, blocks the secondary oxidation of molten
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In continuous casting, low corrosion resistance often occurs, which directly leads to uneven composition and will eventually affect the smelting quality. In or