The Common knowledge about the service life of crystal accessoriesDue to different production varieties and management systems, different manufacturers of cryst
The Common knowledge about the service life of crystal accessories
Due to different production varieties and management systems, different manufacturers of crystallizer accessories scrap standards are not the same.The service life of crystal fittings is usually calibrated by the amount of steel used. The service life of crystal fittings is mainly determined by two important parameters, that is, the taper and the wear amount. In fact, these two parameters are also influenced by each other.
In order to eliminate or reduce the influence of air gap, the inner cavity of crystal fittings should be designed with a certain taper according to the different shrinkage characteristics of steel grade and the degree of thermal deformation of copper plate.The selection of the inverted taper of the crystal fittings should follow the following principles: the solidification shrinkage characteristics of the steel grade and the shape of the inner cavity should be suitable for the actual shape of the inner solidified billet shell to the maximum extent, so as to minimize the thickness of the air gap in the whole crystal fittings and improve the heat transfer effect, so as to ensure the uniformity of the thickness of the inner billet shell and the thickness of the lower billet shell.After the use of copper pipe, if the maintenance span has not been able to repair the taper to the standard range required by the steel mill, it can extend the service life of crystal accessories.
At the same time, in order to ensure the working effect, in the process of continuous casting mold, no one is allowed to stay and pass through the large bag rotary table.The control room is strictly prohibited to fire for heating, eating, smoking, slapstick, the control room of the control table is strictly prohibited to put feet, sitting, stacking items, especially not allowed to put cups, not allowed to read books, newspapers and magazines in operation.
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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