2022年8月30日星期二

Vertical Semi-continuous Casting

Vertical Semi-continuous Casting

Vertical Semi-continuous Casting

The semi-continuous casting method can be divided into horizontal and vertical semi-continuous casting according to the operation mode of the slab.

Regardless of the horizontal or vertical semi-continuous casting method, in order to achieve a continuous and stable solidification and crystallization process, the total heat brought by the melt into the mold per unit time must be kept with the heat lost to the space through cooling channels such as mold and cooling water. Balance, otherwise, the normal process will be disrupted. The process characteristics of horizontal or vertical semi-continuous casting are:

(1) The reasonable configuration between the pouring system and the crystallization during the ingot casting process reduces the splash and disturbance of the metal liquid, and prevents the mixing of harmful substances such as oxide film and slag inclusion;

(2) The molten metal can be continuously and stably injected into the mold, so a lower pouring temperature can be used for casting, which is conducive to eliminating the pores and loose defects of the ingot;

(3) Using water as the cooling medium, the solidification and crystallization of the ingot is completed under extremely strong subcooling conditions. The ingot has a dense crystalline structure, and because the crystallization always maintains the order of crystallization, it has obvious directionality, which is conducive to removing Shrinkage and shrinkage defects;

(4) The length of the ingot is long, and it can be cut reasonably according to the process requirements of the processing workshop, which can reduce the loss of the cutting head and the cutting tail.

(5) The ingot casting method with the same pig iron mold is better than the working conditions. 


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