The role of continuous casting mold1) At the highest possible speed, ensure the thickness of mold shell to prevent leakage.(2) The thickness around the casting
The role of continuous casting mold
1) At the highest possible speed, ensure the thickness of mold shell to prevent leakage.
(2) The thickness around the casting billet should be uniform.
The solidification behavior of molten steel in mold has great influence on the surface quality of billet and the normal production of casting machine. Therefore, the mold has the following requirements:
(1) In order to make the molten steel solidify rapidly, the mold wall should have good thermal conductivity and water cooling conditions.
(2) In order to make the solidified initial green shell and the inner wall of the mold unbonded, the friction force is small, the mold should be made up and down reciprocating movement in the pouring process and lubricant should be added.
(3) In order to make the shape of the billet correct and avoid the influence of mold deformation on the billet drawing, the mold should be rigid enough.
(4) The structure of the crystallizer should be simple and the weight should be light.
The crystallizer is lined with copper and copper alloy with good thermal conductivity, and it is cooled by water with a jacket outside. Its own structure is divided into copper wall, coat and water tank 3 parts
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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